CN115412273A

CN115412273A - Communication method and device for power line low-voltage transformer area

Info

Publication number: CN115412273A
Application number: CN202110595923.6A
Authority: CN
Inventors: 冯晓敏; 李坤和; 孙瑜
Original assignee: Shanghai Haisi Technology Co ltd
Current assignee: Shanghai Haisi Technology Co ltd
Priority date: 2021-05-29
Filing date: 2021-05-29
Publication date: 2022-11-29

Abstract

The application relates to a communication method and a device for a low-voltage distribution area of a power line, wherein the method comprises the following steps: the first root node receives an access network request message of a target slave node, wherein the access network request message comprises identity information of the target slave node; the first root node determines whether the target slave node is accessed to a low-voltage distribution area where the first root node is located or not according to the identity information of the target slave node; the target slave nodes comprise slave nodes corresponding to the first root node and slave nodes corresponding to the second root node. In the method, the slave node corresponding to the first root node and the slave node corresponding to the second root node in the low-voltage distribution area are configured in a topological network in a low-voltage distribution area communication link layer, so that the communication performance of the low-voltage distribution area is improved, the stable operation of services is ensured, the service expansion of the low-voltage distribution area is facilitated, and the service development requirements are met.

Description

Communication method and device for power line low-voltage transformer area

Technical Field

The present application relates to the field of communications technologies, and in particular, to a communication method and apparatus for a low-voltage distribution room of a power line.

Background

In the power network, the equipment in the low-voltage transformer area generally belongs to a camppart or an equipment part, wherein the equipment managed by the camppart is constructed into a marketing acquisition meter reading network, and the equipment managed by the equipment part is constructed into an equipment configuration network; the two networks are two independent topological networks (Topology, TOPO) on the communication link layer of the low-voltage station area, and the devices in the two topological networks are not mutually fused on the communication link, so that the communication performance of the low-voltage station area is influenced, and the stable operation of the service in the low-voltage station area cannot be ensured; meanwhile, the devices in the low-voltage transformer area belong to two topological networks, which is not beneficial to the service expansion of the low-voltage transformer area.

Disclosure of Invention

The application provides a communication method, a communication device, a storage medium and a computer program for a power line low-voltage transformer area.

In a first aspect, an embodiment of the present application provides a communication method for a low-voltage power line station area, where the method includes: a first root node receives an access network request message of a target slave node, wherein the access network request message comprises identity information of the target slave node; the first root node determines whether the target slave node is accessed to a low-voltage distribution room where the first root node is located or not according to the identity information of the target slave node; wherein the target slave node comprises a slave node corresponding to the first root node and a slave node corresponding to the second root node.

Based on the technical scheme, the slave node corresponding to the first root node and the slave node corresponding to the second root node can be configured in a topological network in a low-voltage area communication link layer, and the nodes in the low-voltage area are mutually fused on the communication link, so that the communication performance of the low-voltage area is improved, and the stable operation of services in the low-voltage area is ensured; meanwhile, the nodes in the low-voltage transformer area belong to the same topological network, so that the service expansion of the low-voltage transformer area is facilitated, and the service development requirement is met.

In a possible implementation manner, the determining, by the first root node, whether the target slave node accesses the low-voltage distribution area where the first root node is located according to the identity information of the target slave node includes: the first root node searches the identity information of the target slave node in a white list corresponding to the first root node, wherein the white list corresponding to the first root node comprises the identity information of the slave node corresponding to the first root node; under the condition that the identity information of the target slave node belongs to a white list corresponding to the first root node, the first root node sends an access network success message to the target slave node; otherwise, the first root node sends the access network request message to the second root node.

Based on the technical scheme, after receiving an access network request message of a target slave node, a first root node allows the target slave node to access the network under the condition that the identity information of the target slave node belongs to a white list corresponding to the first root node; under the condition that the identity information of the target slave node does not belong to a white list corresponding to the first root node, the network request message is sent to a second root node so that a second root base point can be authenticated, and the slave node corresponding to the first root node and the slave node corresponding to the second root node are configured in a topological network in a low-voltage distribution area communication link layer, so that the nodes in the low-voltage distribution area are mutually fused on a communication link, and at least one of the slave node of the first root node and the slave node corresponding to the second root node can be used as a relay in a communication path between the two nodes, so that the communication performance of the low-voltage distribution area is improved, and the stable operation of services in the low-voltage distribution area is ensured; meanwhile, the nodes in the low-voltage transformer area belong to the same topological network, so that the service expansion of the low-voltage transformer area is facilitated, and the service development requirement is met.

In one possible implementation, the method further includes: the first root node receives an access network request message of the target slave node sent by the second root node; the first root node searches the identity information of the target slave node in a white list corresponding to the first root node; and under the condition that the identity information of the target slave node belongs to the white list corresponding to the first root node, the first root node sends an access network success message to the second root node, and the second root node forwards the access network success message to the target slave node.

Based on the technical scheme, after receiving an access network request message of a target slave node, a second root node can forward the access network request message to a first root node, and the first root node and the second root node respectively search identity information of the target slave node in corresponding white lists, so that the slave nodes corresponding to the first root node and the second root node are configured in a topological network in a low-voltage distribution area communication link layer through common authentication networking, and thus, the nodes in the low-voltage distribution area are mutually fused on a communication link, and at least one of the slave nodes corresponding to the first root node and the second root node can be used as a relay in a communication path between the two nodes, so that the communication performance of the low-voltage distribution area is improved, and stable operation of services in the low-voltage distribution area is ensured; meanwhile, the nodes in the low-voltage transformer area belong to the same topological network, so that the service expansion of the low-voltage transformer area is facilitated, and the service development requirement is met.

In a possible implementation manner, the determining, by the first root node, whether the target slave node accesses the low-voltage distribution area where the first root node is located according to the identity information of the target slave node includes: the first root node receives a white list corresponding to the second root node; the white list corresponding to the second root node comprises identity information of a slave node corresponding to the second root node; the first root node searches the identity information of the target slave node in a white list corresponding to the first root node and a white list corresponding to the second root node; and under the condition that the identity information of the target slave node belongs to the white list corresponding to the first root node or the white list corresponding to the second root node, the first root node sends an access network success message to the target slave node.

Based on the technical scheme, the second root node authorizes a white list corresponding to the second root node to the first root node, and after receiving an access network request message of a target slave node, the first root node searches identity information of the target slave node in the white list corresponding to the first root node and the white list corresponding to the second root node to realize authentication networking, so that the slave node corresponding to the first root node and the slave node corresponding to the second root node are configured in a topological network in a low-voltage area communication link layer, therefore, the nodes in the low-voltage area are mutually fused on a communication link, and at least one of the slave node of the first root node and the slave node corresponding to the second root node can be used as a relay in a communication path between the two nodes, so that the communication performance of the low-voltage area is improved, and stable operation of services in the low-voltage area is ensured; meanwhile, the nodes in the low-voltage transformer area belong to the same topological network, so that the service expansion of the low-voltage transformer area is facilitated, and the service development requirement is met.

In one possible implementation, the method further includes: and the first root node sends the white list corresponding to the first root node to the second root node.

Based on the technical scheme, the first root node authorizes the white list corresponding to the first root node to the second root node, so that after the second root node receives the network access request message of the target slave node, the identity information of the target slave node is searched in the white list corresponding to the second root node and the white list corresponding to the first root node, and authentication networking is achieved.

In one possible implementation, the method further includes: the first root node monitors a root node in a network; the network comprises at least one low-voltage station area; the first root node determines a second root node matching the first root node among the overheard root nodes.

Under the condition that the first root node does not perform root node pairing, the first root node cannot determine the root node located in the same low-voltage distribution room, and further common establishment, management and maintenance of the same topological network of a communication link layer in the low-voltage distribution room are affected. Based on the technical scheme, the first root node determines a second root node matched with the first root node, and the first root node and the second root node belong to the same low-voltage transformer area, so that the same topological network of a communication link layer in the low-voltage transformer area can be jointly established, managed and maintained.

In one possible implementation, the method further includes: the first root node receives network information of a slave node corresponding to the first root node, wherein the network information of the slave node corresponding to the first root node comprises: at least one of offline information of a slave node corresponding to the first root node or online information of a slave node corresponding to the first root node; the first root node updates the routing information corresponding to the first root node according to the received network information of the slave node corresponding to the first root node; the routing information corresponding to the first root node comprises at least one of a communication path between the first root node and a slave node corresponding to the first root node or a first routing metric value; and the first root node sends network information of a slave node corresponding to the first root node and/or routing information corresponding to the first root node to the second root node.

Based on the above technical solution, the first root node may update the routing information corresponding to the first root node according to the received network information of the first slave node, and may actively send the network information of the slave node corresponding to the first root node and/or the updated routing information corresponding to the first root node to the second root node, thereby implementing network information synchronization between the two root nodes.

In one possible implementation, the method further includes: the first root node receives network information of a slave node corresponding to the first root node; the first root node updates the routing information corresponding to the first root node according to the received network information of the slave node corresponding to the first root node; the first root node receives a request message of the second root node for acquiring the network information; and the first root node sends network information of a slave node corresponding to the first root node and/or routing information corresponding to the first root node to the second root node.

Based on the above technical solution, the first root node may update the routing information corresponding to the first root node according to the received network information of the first slave node; meanwhile, after receiving the network information acquisition request message of the second root node, the second root node may send the network information of the slave node and/or the updated routing information corresponding to the first root node to the second root node, thereby implementing information synchronization between the two root nodes.

In one possible implementation, the method further includes: the first root node receives network information of a slave node corresponding to the second root node and/or routing information corresponding to the second root node, which is sent by the second root node; the network information of the slave node corresponding to the second root node includes: at least one of offline information of a slave node corresponding to the second root node or online information of a slave node corresponding to the second root node; the routing information corresponding to the second root node includes at least one of a communication path between the second root node and a slave node corresponding to the second root node or a second route metric value.

Based on the above technical solution, the first root node may receive the network information of the slave node and/or the routing information corresponding to the second root node, which are actively sent by the second root node, so as to implement network information synchronization between the two root nodes.

In one possible implementation, the method further includes: the first root node sends a request message for acquiring network information to the second root node; and the first root node receives network information of a slave node corresponding to the second root node and/or routing information corresponding to the second root node, which are sent by the second root node.

Based on the technical scheme, the first root node initiates a request for acquiring the network information to the second root node, and receives the network information of the slave node and/or the routing information corresponding to the second root node, which are sent by the second root node, so as to realize information synchronization.

In one possible implementation, the method further includes: the first root node sends a first service packet, where the first service packet includes a first destination node identifier and a next-level node identifier, where the first destination node is a first slave node corresponding to the first root node, the first slave node is any one of slave nodes corresponding to the first root node, the first next-level node is any one of a slave node corresponding to the second root node, or a second slave node corresponding to the first root node, and the second slave node is any one of the slave nodes corresponding to the first root node except the first slave node.

When the slave node corresponding to the first root node and the slave node corresponding to the second root node belong to different topology networks at a communication link layer, when the first root node sends a service message to a destination node, a communication path only can comprise the slave node of the first root node, so that the communication path is possibly longer, the channel attenuation and the noise are larger, and the communication stability and the reliability are poorer; based on the above technical solution, since the first root node, the slave node corresponding to the first root node, the second root node, and the slave node corresponding to the second root node belong to the same network at a communication link layer, the first root node may obtain routing information of the slave node of the second root node, when sending a service packet to a destination node, the communication path may not only include the slave node of the first root node, the first root node may comprehensively consider the slave node corresponding to the first root node, the slave node corresponding to the second root node, and select an optimal sending path, for example, when the first root node sends a service packet to the first slave node, at least one of the second root node, the second slave node, or the slave node corresponding to the second root node serves as a relay to forward the service packet, the communication path is short, and the communication is more stable and reliable; therefore, the communication performance is improved, and the stable operation of the service is ensured.

In one possible implementation, the method further includes: and the first root node receives a second service message, wherein the second service message comprises a second destination node identifier, and the second destination node is a slave node corresponding to the second root node or the second root node.

Based on the technical scheme, when the second root node interacts the service message with the slave node corresponding to the second root node, the first root node is used as the relay to forward the service message, so that the communication performance is improved, and the stable operation of the service is ensured.

In one possible implementation, the method further includes: under the condition that the first root node cannot acquire routing information reaching a destination node, the first root node sends a third service message to the second root node, and the third service message is forwarded to the destination node by the second root node; and the destination node is a slave node corresponding to the first root node.

The destination node is a slave node corresponding to the first root node, if the slave node corresponding to the first root node and the slave node corresponding to the second root node belong to different topology networks in a communication link layer, and the first root node cannot interact a service message with the destination node under the condition that the first root node cannot acquire routing information reaching the destination node, so that the service cannot stably run; based on the above technical solution, since the first root node, the slave node corresponding to the first root node, the second root node, and the slave node corresponding to the second root node belong to the same network at a communication link layer, under the condition that the first root node cannot obtain routing information to the destination node, the first root node may comprehensively consider the slave node corresponding to the first root node, the slave node corresponding to the second root node, and select other transmission paths, for example, the second root node is used as a relay, and forward the service packet to the destination node, thereby improving communication performance and ensuring stable operation of the service.

In one possible implementation, the method further includes: and the first root node receives a fourth service message forwarded by the second root node, wherein the fourth service message is a message sent to the first root node by a slave node corresponding to the first root node.

Based on the technical scheme, when the slave node corresponding to the first root node sends the service packet to the first root node, the second root node is used as a relay, and the service packet is forwarded to the first root node, so that the communication performance is improved, and the stable operation of the service is ensured.

In one possible implementation, the method further includes: the first root node sends a fifth service message to a slave node corresponding to the second root node, and the fifth service message is forwarded to a destination node by the slave node corresponding to the second root node; and the destination node is a slave node corresponding to the first root node.

Based on the above technical solution, because the first root node, the slave node corresponding to the first root node, the second root node, and the slave node corresponding to the second root node belong to the same network at a communication link layer, the first root node may obtain routing information of the slave node corresponding to the second root node, when sending a service packet to a destination node, the sending path may not only include the slave node corresponding to the first root node, and the first root node may select an optimal sending path by comprehensively considering the slave node corresponding to the first root node and the slave node corresponding to the second root node, for example, when the first root node sends a service packet to the slave node corresponding to the first root node, the slave node corresponding to the second root node may be used as a relay to forward the service packet, thereby improving communication performance and ensuring stable operation of the service; meanwhile, the message interaction between the first root node and the second root node is reduced and the bandwidth is saved without forwarding through the second root node.

In one possible implementation, the method further includes: and the first root node receives a sixth service message forwarded by a slave node corresponding to the second root node, where the sixth service message is a message sent to the first root node by the slave node corresponding to the first root node.

Based on the technical scheme, when the slave node corresponding to the first root node sends the service message to the first root node, the slave node corresponding to the second root node is used as a relay, and the service message is forwarded to the first root node, so that the communication performance is improved, and the stable operation of the service is ensured; meanwhile, the message interaction between the first root node and the second root node is reduced and the bandwidth is saved without forwarding through the second root node.

In one possible implementation, the method further includes: the first root node monitors flow information in a low-voltage distribution room where the first root node is located; the flow information comprises the total amount of messages of a low-voltage distribution room where the first root node is located, which are monitored in unit time; the first root node sends a bandwidth negotiation message to the second root node under the condition that the flow information meets a preset condition; the bandwidth negotiation message is used for determining the priority of each message to be sent in a low-voltage platform area where the first root node is located; the first root node sends each message to be sent according to the priority of each message to be sent; or, the first root node receives a bandwidth negotiation message of the second root node, where the bandwidth negotiation message is used to determine the priority of each message to be sent in a low-voltage platform area where the first root node is located; and the first root node transmits each message to be transmitted according to the determined priority of each message to be transmitted.

Based on the above technical solution, under the condition that the traffic information satisfies the preset condition, for example, when the total amount of the messages sent in china in the low-voltage distribution area exceeds a certain threshold in unit time, the first node and the second node may perform bandwidth coordination, and send each message to be sent according to the determined priority of each message to be sent, thereby ensuring the real-time performance of message transmission and avoiding network congestion.

In a possible implementation manner, the first root node is configured to acquire a meter reading service in marketing, and the second root node is configured to perform an equipment configuration service; the device configuration service includes: at least one of line branch identification, power failure fault point study and judgment, line loss analysis and management, line fault early warning, line aging identification or three-phase imbalance treatment; or, the first root node is used for equipment configuration service, and the second root node is used for marketing acquisition meter reading service.

Based on the technical scheme, the nodes managed by different departments in the low-voltage transformer area can be configured in a topological network in a communication link layer of the low-voltage transformer area, and the nodes are mutually fused on the communication link, so that the communication performance of the low-voltage transformer area is improved, and the stable operation of the marketing acquisition meter reading service and the equipment configuration service is ensured; meanwhile, nodes managed by different departments belong to the same topological network, so that new services can be expanded conveniently, and the development requirements of the services are met.

In a second aspect, an embodiment of the present application provides a communication method for a low voltage power line station area, where the method includes: a second root node receives an access network request message of a target slave node, wherein the access network request message comprises identity information of the target slave node; the second root node determines whether the target slave node is accessed to a low-voltage distribution area where the second root node is located according to the identity information of the target slave node; the target slave node comprises a slave node corresponding to the second root node and a slave node corresponding to the first root node.

Based on the technical scheme, the slave node corresponding to the first root node and the slave node corresponding to the second root node in the low-voltage transformer area can be configured in a topological network in a low-voltage transformer area communication link layer, and the nodes in the low-voltage transformer area are mutually communicated on the communication link, so that the communication performance of the low-voltage transformer area is improved, and the stable operation of services in the low-voltage transformer area is ensured; meanwhile, the nodes in the low-voltage transformer area belong to the same topological network, so that the service expansion of the low-voltage transformer area is facilitated, and the service development requirement is met.

In one possible implementation manner, the determining, by the second root node, whether the target slave node accesses the low-voltage distribution area where the second root node is located according to the identity information of the target slave node includes: the second root node receives an access network request message of the target slave node sent by the first root node; the second root node searches the identity information of the target slave node in a white list corresponding to the second root node; the white list corresponding to the second root node comprises identity information of a slave node corresponding to the second root node; and under the condition that the identity information of the target slave node belongs to a white list corresponding to the second root node, the second root node sends an access network success message to the first root node, and the first root node forwards the access network success message to the target slave node.

Based on the technical scheme, after receiving an access network request message of a target slave node, a first root node can forward the access network request message to a second root node, and the first root node and the second root node respectively search identity information of the target slave node in corresponding white lists, so that the slave nodes corresponding to the first root node and the second root node are configured in a topological network in a low-voltage distribution area communication link layer through common authentication networking, and thus, the nodes in the low-voltage distribution area are mutually fused on a communication link, and at least one of the slave nodes corresponding to the first root node and the second root node, the first root node or the second root node can be used as a relay in a communication path between the two nodes, so that the communication performance of the low-voltage distribution area is improved, and the stable operation of services in the low-voltage distribution area is ensured; meanwhile, the nodes in the low-voltage transformer area belong to the same topological network, so that the service expansion of the low-voltage transformer area is facilitated, and the service development requirement is met.

In one possible implementation, the method further includes: and the second root node sends a white list corresponding to the second root node to the first root node.

Based on the technical scheme, the second root node authorizes the white list corresponding to the second root node to the first root node, so that after the first root node receives the network access request message of the target slave node, the identity information of the target slave node is searched in the white list corresponding to the first root node and the white list corresponding to the second root node, and authentication networking is achieved.

In one possible implementation, the method further includes: the second root node receives network information of a slave node corresponding to the first root node and/or routing information corresponding to the first root node, which are sent by the first root node; the network information of the slave node corresponding to the first root node comprises: at least one of offline information of a slave node corresponding to the first root node or online information of a slave node corresponding to the first root node; the routing information corresponding to the first root node includes at least one of a communication path between the first root node and a slave node corresponding to the first root node or a second route metric value.

Based on the above technical solution, the second root node may receive the network information of the slave node and/or the routing information corresponding to the first root node, which is actively sent by the first root node, so as to implement network information synchronization between the two root nodes.

In one possible implementation, the method further includes: the second root node sends a request message for acquiring network information to the first root node; and the second root node receives the network information of the slave node corresponding to the first root node and/or the routing information corresponding to the first root node, which are sent by the first root node.

Based on the technical scheme, the second root node initiates a request for acquiring the network information to the first root node, and receives the network information of the slave node and/or the routing information corresponding to the first root node, which are sent by the first root node, so that the network information synchronization between the two root nodes is realized.

In one possible implementation, the method further includes: and the second root node receives a first service message, wherein the first service message comprises a first destination node identifier, and the first destination node is a slave node corresponding to the first root node or the first root node.

Based on the technical scheme, when the service message is mutually sent between the slave node corresponding to the first root node and the first root node, the second root node can be used as a relay to forward the service message, so that the communication performance is improved, and the stable operation of the service is ensured.

In one possible implementation, the method further includes: and the second root node receives a second service packet sent by the first root node, and forwards the second service packet to a destination node, where the destination node is a slave node corresponding to the first root node.

Based on the technical scheme, when the first root node sends the service message to the slave node corresponding to the first root node, the second root node can be used as a relay to forward the service message, so that the communication performance is improved, and the stable operation of the service is ensured.

In one possible implementation, the method further includes: and the second root node receives a third service packet, and forwards the third service packet to the first root node, where the third service packet is a packet sent to the first root node by a slave node corresponding to the first root node.

Based on the technical scheme, when the slave node corresponding to the first root node sends the service message to the first root node, the second root node is used as a relay to forward the service message, so that the communication performance is improved, and the stable operation of the service is ensured.

In one possible implementation, the method further includes: the second root node receives a bandwidth negotiation message of the first root node, wherein the bandwidth negotiation message is used for determining the priority of each message to be sent in a low-voltage platform area where the second root node is located; and the second root node transmits each message to be transmitted according to the determined priority of each message to be transmitted.

Based on the technical scheme, the second root node and the first root node can carry out bandwidth coordination and send each message to be sent according to the determined priority of each message to be sent, so that the real-time performance of message transmission is ensured, and network congestion is avoided.

Based on the technical scheme, the nodes managed by different departments can be configured in a topological network in the communication link layer of the low-voltage transformer area, and the nodes are mutually fused on the communication link, so that the communication performance of the low-voltage transformer area is improved, and the stable operation of the marketing acquisition meter reading service and the equipment configuration service is ensured; meanwhile, nodes managed by different departments belong to the same topological network, so that new services can be conveniently expanded, and the development requirements of the services are met.

In a third aspect, an embodiment of the present application provides a communication method for a low-voltage power line station area, where the method includes: a first slave node sends an access network request message to a first root node, wherein the access network request message comprises identity information of the first slave node; the first slave node receives an access network success message sent by the first root node, wherein the access network success message is a message indicating that the first slave node successfully accesses a low-voltage distribution room where the first root node is located; wherein the first slave node includes a slave node corresponding to the first root node and a slave node corresponding to the second root node.

Based on the technical scheme, the slave node corresponding to the first root node and the slave node corresponding to the second root node can be configured in a topological network of a communication link layer of the low-voltage distribution area, and the nodes in the low-voltage distribution area are mutually fused on the communication link, so that the communication performance of the low-voltage distribution area is improved, and the stable operation of services in the low-voltage distribution area is ensured; meanwhile, the nodes in the low-voltage transformer area belong to the same topological network, so that the service expansion of the low-voltage transformer area is facilitated, and the service development requirement is met.

In one possible implementation, the method further includes: if the first slave node is a slave node corresponding to the first root node, the first slave node sends network information of the first slave node to the first root node, where the network information of the first slave node includes: at least one of offline information of the first slave node or online information of the first slave node.

In one possible implementation, the method further includes: the first slave node sends a first service message, wherein the first service message comprises a first destination node identifier and a next-level node identifier; when the first slave node is a slave node corresponding to the first root node, the first destination node is the first root node, and the first lower-level node is a slave node corresponding to the first root node or a slave node corresponding to the second root node.

Based on the technical scheme, when the first slave node sends the service message to the first root node, the second root node or the slave node corresponding to the second root node is used as a relay to forward the service message, so that the communication performance is improved, and the stable operation of the service is ensured.

In one possible implementation, the method further includes: the first slave node receives a second service message, wherein the second service message comprises a second destination node identifier; and in a case that the first slave node is a slave node corresponding to the first root node, the second destination node is the second root node or a slave node corresponding to the second root node.

Based on the technical scheme, when the slave node corresponding to the second root node interacts with the second root node for service message, the first slave node is used as a relay to forward the service message, so that the communication performance is improved, and the stable operation of the service is ensured.

In one possible implementation, the method further includes: and the first slave node receives a third service packet sent by the first root node and forwards the third service packet to a destination node, wherein the destination node is a slave node corresponding to the first root node.

Based on the technical scheme, when the first root node sends the service message to the slave node corresponding to the first root node, the first slave node is used as a relay to forward the service message, so that the communication performance is improved, and the stable operation of the service is ensured.

In one possible implementation, the method further includes: and the first slave node receives a fourth service packet, and forwards the fourth service packet to the first root node, where the fourth service packet is a packet sent to the first root node by the slave node corresponding to the first root node.

Based on the technical scheme, when the slave node corresponding to the first root node sends the service message to the first root node, the first slave node is used as a relay to forward the service message, so that the communication performance is improved, and the stable operation of the service is ensured.

In a possible implementation manner, the first root node is used for marketing and collecting meter reading service, and the second root node is used for equipment configuration service; the device configuration service comprises: at least one of line branch identification, power failure fault point study and judgment, line loss analysis and management, line fault early warning, line aging identification and three-phase imbalance treatment; or, the first root node is used for equipment configuration service, and the second root node is used for marketing acquisition meter reading service.

Based on the technical scheme, the nodes managed by different departments in the low-voltage transformer area can be configured in a topological network in a communication link layer of the low-voltage transformer area, and the nodes are mutually communicated on the communication link, so that the communication performance of the low-voltage transformer area is improved, and the stable operation of the marketing acquisition meter reading service and the equipment configuration service is ensured; meanwhile, nodes managed by different departments belong to the same topological network, so that new services can be conveniently expanded, and the development requirements of the services are met.

In a fourth aspect, an embodiment of the present application provides a communication device in a low-voltage power line station area, including:

a receiving module, configured to receive, by a first root node, an access network request packet of a target slave node, where the access network request packet includes identity information of the target slave node; the networking module is used for determining whether the target slave node is accessed to a low-voltage distribution room where the first root node is located or not by the first root node according to the identity information of the target slave node; wherein the target slave node comprises a slave node corresponding to the first root node and a slave node corresponding to the second root node.

In a possible implementation manner, the networking module is further configured to: the first root node searches the identity information of the target slave node in a white list corresponding to the first root node, wherein the white list corresponding to the first root node comprises the identity information of the slave node corresponding to the first root node; under the condition that the identity information of the target slave node belongs to a white list corresponding to the first root node, the first root node sends an access network success message to the target slave node; otherwise, the first root node sends the access network request message to the second root node.

In a possible implementation manner, the networking module is further configured to: the first root node receives an access network request message of the target slave node sent by the second root node; the first root node searches the identity information of the target slave node in a white list corresponding to the first root node; and under the condition that the identity information of the target slave node belongs to the white list corresponding to the first root node, the first root node sends an access network success message to the second root node, and the second root node forwards the access network success message to the target slave node.

In a possible implementation manner, the networking module is further configured to: the first root node receives a white list corresponding to the second root node; the white list corresponding to the second root node comprises identity information of a slave node corresponding to the second root node; the first root node searches the identity information of the target slave node in a white list corresponding to the first root node and a white list corresponding to the second root node; and under the condition that the identity information of the target slave node belongs to the white list corresponding to the first root node or the white list corresponding to the second root node, the first root node sends an access network success message to the target slave node.

In a possible implementation manner, the networking module is further configured to: and the first root node sends the white list corresponding to the first root node to the second root node.

In one possible implementation, the apparatus further includes a pairing module configured to: the first root node monitors a root node in a network; the network includes at least one low-voltage zone; the first root node determines a second root node matching the first root node among the monitored root nodes.

In a possible implementation manner, the apparatus further includes a synchronization module configured to: the first root node receives network information of a slave node corresponding to the first root node, wherein the network information of the slave node corresponding to the first root node comprises: at least one of offline information of a slave node corresponding to the first root node or online information of a slave node corresponding to the first root node; the first root node updates the routing information corresponding to the first root node according to the received network information of the slave node corresponding to the first root node; the routing information corresponding to the first root node comprises at least one of a communication path between the first root node and a slave node corresponding to the first root node or a first routing metric value; the first root node sends network information of a slave node corresponding to the first root node and/or routing information corresponding to the first root node to the second root node; or, the first root node receives network information of a slave node corresponding to the first root node; the first root node updates the routing information corresponding to the first root node according to the received network information of the slave node corresponding to the first root node; the first root node receives a request message of the second root node for acquiring the network information; and the first root node sends network information of a slave node corresponding to the first root node and/or routing information corresponding to the first root node to the second root node.

In a possible implementation manner, the apparatus further includes a synchronization module configured to: the first root node receives network information of a slave node corresponding to the second root node and/or routing information corresponding to the second root node, which is sent by the second root node; the network information of the slave node corresponding to the second root node includes: at least one of offline information of a slave node corresponding to the second root node or online information of a slave node corresponding to the second root node; the routing information corresponding to the second root node comprises at least one of a communication path between the second root node and a slave node corresponding to the second root node or a second route metric value; or, the first root node sends a request message for acquiring network information to the second root node; and the first root node receives network information of a slave node corresponding to the second root node and/or routing information corresponding to the second root node, which are sent by the second root node.

In a possible implementation manner, the apparatus further includes a service module, configured to: the first root node sends a first service message, where the first service message includes a first destination node identifier and a next-level node identifier, where the first destination node is a first slave node corresponding to the first root node, the first slave node is any one of slave nodes corresponding to the first root node, the first next-level node is any one of a slave node corresponding to the second root node, or a second slave node corresponding to the first root node, and the second slave node is any one of the slave nodes corresponding to the first root node except the first slave node; or, the first root node receives a second service packet, where the second service packet includes a second destination node identifier, and the second destination node is a slave node corresponding to the second root node or the second root node.

In a possible implementation manner, the service module is further configured to: under the condition that the first root node cannot acquire routing information reaching a destination node, the first root node sends a third service message to the second root node, and the third service message is forwarded to the destination node by the second root node; the destination node is a slave node corresponding to the first root node; or, the first root node receives a fourth service packet forwarded by the second root node, where the fourth service packet is a packet sent to the first root node by a slave node corresponding to the first root node.

In a possible implementation manner, the service module is further configured to: the first root node sends a fifth service packet to a slave node corresponding to the second root node, and the fifth service packet is forwarded to a destination node by the slave node corresponding to the second root node; the destination node is a slave node corresponding to the first root node; or, the first root node receives a sixth service packet forwarded by a slave node corresponding to the second root node, where the sixth service packet is a packet sent to the first root node by the slave node corresponding to the first root node.

In a possible implementation manner, the apparatus further includes a flow control module, configured to: the first root node monitors flow information in a low-voltage distribution area where the first root node is located; the flow information comprises the total amount of the messages of the low-voltage distribution area where the first root node is located, which are monitored in unit time; under the condition that the flow information meets a preset condition, the first root node sends a bandwidth negotiation message to the second root node; the bandwidth negotiation message is used for determining the priority of each message to be sent in a low-voltage distribution area where the first root node is located; the first root node sends each message to be sent according to the priority of each message to be sent; or, the first root node receives a bandwidth negotiation message of the second root node, where the bandwidth negotiation message is used to determine the priority of each message to be sent in a low-voltage platform area where the first root node is located; and the first root node transmits each message to be transmitted according to the determined priority of each message to be transmitted.

In a possible implementation manner, the first root node is configured to acquire a meter reading service in marketing, and the second root node is configured to perform an equipment configuration service; the device configuration service comprises: at least one of line branch identification, power failure fault point study and judgment, line loss analysis and management, line fault early warning, line aging identification or three-phase imbalance treatment.

For technical effects of the fourth aspect and various possible implementations of the fourth aspect, reference is made to the technical effects of the first aspect and various possible implementations of the first aspect.

In a fifth aspect, an embodiment of the present application provides a communication device for a low-voltage power line station, including: a receiving module, configured to receive, by a second root node, an access network request packet of a target slave node, where the access network request packet includes identity information of the target slave node; the networking module is used for determining whether the target slave node is accessed to a low-voltage distribution area where the second root node is located or not by the second root node according to the identity information of the target slave node; wherein the target slave node comprises a slave node corresponding to the second root node and a slave node corresponding to the first root node.

In a possible implementation manner, the networking module is further configured to: the second root node receives an access network request message of the target slave node sent by the first root node; the second root node searches the identity information of the target slave node in a white list corresponding to the second root node; the white list corresponding to the second root node comprises identity information of a slave node corresponding to the second root node; and under the condition that the identity information of the target slave node belongs to a white list corresponding to the second root node, the second root node sends an access network success message to the first root node, and the first root node forwards the access network success message to the target slave node.

In a possible implementation manner, the networking module is further configured to: and the second root node sends a white list corresponding to the second root node to the first root node.

In one possible implementation manner, the apparatus further includes a synchronization module configured to: the second root node receives network information of a slave node corresponding to the first root node and/or routing information corresponding to the first root node, which is sent by the first root node; the network information of the slave node corresponding to the first root node comprises: at least one of offline information of a slave node corresponding to the first root node or online information of a slave node corresponding to the first root node; the routing information corresponding to the first root node comprises at least one of a communication path between the first root node and a slave node corresponding to the first root node or a second routing metric value; or, the second root node sends a request message for acquiring network information to the first root node; and the second root node receives the network information of the slave node corresponding to the first root node and/or the routing information corresponding to the first root node, which are sent by the first root node.

In a possible implementation manner, the apparatus further includes a service module, configured to: and the second root node receives a first service message, wherein the first service message comprises a first destination node identifier, and the first destination node is a slave node corresponding to the first root node or the first root node.

In a possible implementation manner, the service module is further configured to: the second root node receives a second service packet sent by the first root node, and forwards the second service packet to a destination node, where the destination node is a slave node corresponding to the first root node; or, the second root node receives a third service packet, and forwards the third service packet to the first root node, where the third service packet is a packet sent from a node corresponding to the first root node.

In a possible implementation manner, the apparatus further includes a flow control module, configured to: the second root node receives a bandwidth negotiation message of the first root node, wherein the bandwidth negotiation message is used for determining the priority of each message to be sent in a low-voltage distribution room where the second root node is located; and the second root node transmits each message to be transmitted according to the determined priority of each message to be transmitted.

In a possible implementation manner, the first root node is used for marketing and collecting meter reading service, and the second root node is used for equipment configuration service; the device configuration service includes: at least one of line branch identification, power failure fault point study and judgment, line loss analysis and management, line fault early warning, line aging identification or three-phase imbalance treatment; or, the first root node is used for equipment configuration service, and the second root node is used for marketing acquisition meter reading service.

For technical effects of the above-mentioned fifth aspect and various possible implementations of the fifth aspect, refer to the technical effects of the above-mentioned second aspect and various possible implementations of the second aspect.

In a sixth aspect, an embodiment of the present application provides a communication device in a low-voltage power line station area, including: a sending module, configured to send, by a first slave node, an access network request packet to a first root node, where the access network request packet includes identity information of the first slave node; the network access module is used for the first slave node to receive an access network success message sent by the first root node, wherein the access network success message is a message indicating that the first slave node successfully accesses the low-voltage transformer area where the first root node is located; wherein the first slave node includes a slave node corresponding to the first root node and a slave node corresponding to the second root node.

In a possible implementation manner, the apparatus further includes a reporting module, configured to send, by the first slave node to the first root node, network information of the first slave node when the first slave node is a slave node corresponding to the first root node, where the network information of the first slave node includes: at least one of offline information of the first slave node or online information of the first slave node.

In a possible implementation manner, the apparatus further includes a service module, configured to send a first service packet by the first slave node, where the first service packet includes a first destination node identifier and a next-level node identifier; when the first slave node is a slave node corresponding to the first root node, the first destination node is the first root node, and the first lower-level node is a slave node corresponding to the first root node or a slave node corresponding to the second root node; or, the first slave node receives a second service packet, where the second service packet includes a second destination node identifier; and in a case that the first slave node is a slave node corresponding to the first root node, the second destination node is the second root node or a slave node corresponding to the second root node.

In a possible implementation manner, the service module is further configured to: the first slave node receives a third service packet sent by the first root node, and forwards the third service packet to a destination node, wherein the destination node is a slave node corresponding to the first root node; or, the first slave node receives a fourth service packet, and forwards the fourth service packet to the first root node, where the fourth service packet is a packet sent to the first root node by the slave node corresponding to the first root node.

In a possible implementation manner, the first root node is used for marketing and collecting meter reading service, and the second root node is used for equipment configuration service; the device configuration service includes: at least one of line branch identification, power failure fault point study and judgment, line loss analysis and management, line fault early warning, line aging identification and three-phase imbalance treatment; or, the first root node is used for equipment configuration service, and the second root node is used for marketing acquisition meter reading service.

For technical effects of the above-mentioned sixth aspect and various possible implementations of the sixth aspect, reference is made to the technical effects of the above-mentioned third aspect and various possible implementations of the third aspect.

In a seventh aspect, an embodiment of the present application provides a communication device in a low-voltage power line station area, including: a processor and a transmission interface; the processor receives or sends data through the transmission interface; the processor is configured to execute the instructions stored in the memory to implement a communication method of the low power line voltage station area of the first aspect or one or more of the plurality of possible implementations of the first aspect, or to implement a communication method of the low power line voltage station area of the second aspect or one or more of the plurality of possible implementations of the second aspect, or to implement a communication method of the low power line voltage station area of the third aspect or one or more of the plurality of possible implementations of the third aspect.

In an eighth aspect, an embodiment of the present application provides a computer-readable storage medium, where the computer-readable storage medium has stored thereon computer program instructions, which, when executed by a computer or a processor, implement a communication method for a low-voltage power line station area of the first aspect or one or more of multiple possible implementations of the first aspect, or implement a communication method for a low-voltage power line station area of one or more of multiple possible implementations of the second aspect or the second aspect, or implement a communication method for a low-voltage power line station area of one or more of multiple possible implementations of the third aspect or the third aspect.

In a ninth aspect, an embodiment of the present application provides a computer program product including instructions, which when run on a computer or a processor, cause the computer or the processor to execute a communication method for a low voltage power line station area in one or more of the above-mentioned first aspect or multiple possible implementations of the first aspect, or a communication method for a low voltage power line station area in one or more of the above-mentioned second aspect or multiple possible implementations of the second aspect, or a communication method for a low voltage power line station area in one or more of the above-mentioned third aspect or multiple possible implementations of the third aspect.

The technical effects of the seventh aspect, the eighth aspect and the ninth aspect are described in the following, with reference to the technical effects of the first aspect and the various possible implementations of the first aspect, or the technical effects of the second aspect and the various possible implementations of the second aspect, or the technical effects of the third aspect and the various possible implementations of the third aspect.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate exemplary embodiments, features, and aspects of the application and, together with the description, serve to explain the principles of the application.

Fig. 1 shows a schematic view of a low pressure land distribution in an embodiment of the present application.

Fig. 2 shows the physical topology of the low-voltage transformer area 1 in fig. 1.

Fig. 3 shows a schematic diagram of two topological networks of the communication link layer of the low-voltage station area 1 in fig. 1.

Fig. 4 shows a flowchart of a communication method of a low-voltage power line station according to an embodiment of the present application.

Fig. 5 is a flow chart illustrating a root node pairing according to an embodiment of the present application.

Fig. 6 shows a schematic diagram of root node pairing in the low-voltage platform area 1 in fig. 1.

Fig. 7 is a flowchart illustrating an authentication networking according to an embodiment of the present application.

Fig. 8 shows a flow diagram of another authentication networking of an embodiment of the present application.

Fig. 9 shows a flow diagram of another authentication networking of an embodiment of the present application.

Fig. 10 is a schematic diagram of a network topology of the communication link layer of the low-voltage station area 1 of fig. 1 constructed in an embodiment of the present application.

Fig. 11 is a flow chart illustrating synchronizing network information according to an embodiment of the application.

Fig. 12 illustrates another flow diagram for synchronizing network information according to an embodiment of the present application.

Fig. 13 is a flowchart illustrating a method for performing service communication according to an embodiment of the present application.

Fig. 14 shows another flow chart for performing traffic communication according to an embodiment of the present application.

Fig. 15a is a schematic diagram illustrating a traffic communication between nodes in the low-voltage station area 1 in fig. 1.

Fig. 15b is a schematic diagram illustrating another traffic communication between nodes in the low-voltage station area 1 in fig. 1.

Fig. 16 is a flow chart illustrating another method for performing service communication according to an embodiment of the present application.

Fig. 17 is a flow chart illustrating another method for communicating traffic according to an embodiment of the present application.

Fig. 18a is a schematic diagram illustrating another traffic communication between nodes in the low-voltage station area 1 in fig. 1.

Fig. 18b is a schematic diagram illustrating another traffic communication between nodes in the low-voltage station area 1 in fig. 1.

Fig. 19 shows a flow chart of bandwidth coordination according to an embodiment of the present application.

Fig. 20 is a schematic structural diagram of a communication device in a low-voltage power line station according to an embodiment of the present application.

Fig. 21 is a schematic structural diagram of another communication device in a low-voltage power line station area according to an embodiment of the present application.

Fig. 22 is a schematic structural diagram of another communication device in a low-voltage power line station area according to an embodiment of the present application.

Fig. 23 is a schematic structural diagram of another communication device in a low-voltage power line station area according to an embodiment of the present application.

Detailed Description

Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. In the drawings, like reference numbers can indicate functionally identical or similar elements. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.

It should be understood that, in this application, "at least one" means one or more, "a plurality" means two or more. "and/or" is used to describe the association relationship of the associated object, indicating that there may be three relationships, for example, "a and/or B" may indicate: only A, only B and both A and B are present, wherein A and B may be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of single item(s) or plural items. For example, at least one (one) of a, b, or c, may represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", wherein a, b, c may be single or plural.

Furthermore, in the following detailed description, numerous specific details are set forth in order to provide a better understanding of the present application. It will be understood by those skilled in the art that the present application may be practiced without some of these specific details. In some instances, methods, means, elements and circuits that are well known to those skilled in the art have not been described in detail so as not to obscure the present application.

To facilitate an understanding of the embodiments of the present application, some concepts related to the embodiments of the present application will be first described below.

In the power network, the power is transmitted to various places through a high-voltage transmission line, and the high-voltage power can be converted into low-voltage power through transformers and transmitted to users through a low-voltage distribution network; the low-voltage distribution network composed of one or more nodes and provided under each transformer can be called a low-voltage power distribution area, also called a low-voltage distribution area. Nodes in the same low-voltage station area are connected with each other through a power line, wherein the nodes in the same topological network in the communication link layer can communicate with each other, and the nodes in different topological networks in the communication link layer can not communicate with each other.

Fig. 1 illustrates a schematic diagram of distribution of low voltage transformer bays in an embodiment of the present application, where high voltage on a high voltage transmission line is converted into low voltage through a transformer, and the low voltage transformer bays in different transformer sub-zones are as shown in fig. 1, that is, a low voltage transformer bay 1, a low voltage transformer bay 2, and a low voltage transformer bay 3 \8230, etc., where each low voltage transformer bay may include at least one root node and at least one slave node, and the number of the root nodes and/or the slave nodes in different low voltage transformer bays may be different, as shown in fig. 1, the low voltage transformer bay 1 may include root nodes CCO1 and CCO2, and the slave nodes STA1, STA2, STA3 \8230, etc.; the low-voltage transformer area 2 can comprise root nodes CCO3 and CCO4, slave nodes STA4, STA5, STA6 and STA7 \8230, and the like; the low-voltage platform area 3 can comprise root nodes CCO5, CCO6 and CCO7, slave nodes STA8, STA9 and STA10 \8230, and the like.

The root node may include a concentrator (or an energy controller), a convergence terminal, and the like, and may further include a Power Line Carrier (PLC) communication module or device, where the PLC communication module or device may be independently disposed, and may also be integrated in the concentrator, the convergence terminal, and the like. The root node is used as a general agent of each low-voltage transformer area, can communicate with a master station (a power office server) through an optical fiber private network/wireless public network, and receives the management of the master station; and the PLC network can be used for communicating with the slave nodes corresponding to the low-voltage distribution area, so that the service management and data monitoring of the slave nodes in the low-voltage distribution area are realized.

The slave nodes, also called Stations (STA), may include, for example, intelligent circuit breaker switches, electric energy meters, collectors, power line fault indicators (abbreviated as fault indicators), reactive compensators, meters, and other devices; the PLC communication module or device can be integrated in equipment such as an intelligent circuit breaker switch, an electric energy meter, a collector and a power line fault indicator, can also be independently arranged, and can be in internal communication with the equipment such as the intelligent circuit breaker switch, the electric energy meter, the collector and the power line fault indicator through any one of RS232, RS485, serial ports, serial Peripheral Interfaces (SPI) and the like. The slave nodes can communicate with the corresponding root nodes in the low-voltage transformer area through the PLC network and can receive the control and management of the root nodes; furthermore, the slave node can also have the capability of acquiring and reporting data such as electric energy, power, voltage, current and the like, can receive a control or acquisition instruction issued by the root node, and acquires and reports the data; the system also has the functions of recording and reporting operation and maintenance parameters such as faults, alarms and operations, so that the circuit is prevented from being damaged by faults such as overload, short circuit, grounding/electric leakage, current imbalance and over/under voltage.

For convenience of description, the communication method of the power line low voltage transformer substation provided by the solution in the related art and the embodiment of the present application is described below by taking the low voltage transformer substation 1 shown in fig. 1 as an example.

Fig. 2 shows the physical topology of the low-voltage platform 1 in fig. 1. As shown in fig. 2, the low-voltage transformer area 1 includes two root nodes, i.e., CCO1 and CCO2, where the root node CCO1 may be a concentrator, and the root node CCO2 may be a convergence terminal; the intelligent power meter further comprises a plurality of slave nodes STA1, STA2 and STA3 \ 8230, such as an incoming line switch, an outgoing line switch, a branch switch, a fault indicator, a meter front switch, an electric energy meter, a reactive compensator, a meter and the like, wherein the incoming line switch, the outgoing line switch, the branch switch and the meter front switch can be intelligent breaker switches. It can be understood that the number of the root nodes and the slave nodes in the low-voltage transformer area 1 in fig. 2, the types of the root nodes and the slave nodes, and the like are merely examples, and flexible configuration may be performed in practical application, which is not limited in this embodiment of the present application.

The root nodes and the main nodes in the low-voltage transformer area 1 generally belong to an camppart or an equipment part, wherein an electric energy meter and a meter front switch on a user side, and a concentrator and a meter on a transformer side belong to the camppart, the equipment form a marketing acquisition meter reading network, a master station and the concentrator manage each slave node in the network, and the slave nodes are the slave nodes corresponding to the concentrator; the branch switch, the fault finger, the fusion terminal, the incoming switch, the outgoing switch, the reactive compensator, the leakage protector and other equipment on the line side belong to an equipment part, the equipment forms an equipment configuration network, the master station and the fusion terminal manage each slave node in the network, and the slave nodes are the slave nodes corresponding to the fusion terminal.

In the related technology, a marketing acquisition meter reading network and an equipment configuration network are constructed into two mutually independent topological networks on a communication link layer of a low-voltage transformer area in a mode of common-frequency double networks, different-frequency double networks, heterogeneous double networks and the like. Fig. 3 shows a schematic diagram of two topological networks of the communication link layer of the low-voltage station area 1 in fig. 1. As shown in fig. 3, the marketing collection meter reading network and the device configuration network are independent from each other, wherein the marketing collection meter reading network may include a root node CC01 and corresponding slave nodes STA1, STA2, STA3, STA4, STA5, and STA6; the device configuration network may include the root node CCO2 and its corresponding slave nodes STA1, STA2, STA3, STA4, STA5, STA6.

In the same-frequency dual-network mode, the marketing acquisition meter reading network and the equipment configuration network in fig. 3 have the same communication frequency band and the same communication protocol, and nodes such as CC01, CCO2, STA1 and STA1 differentiate different networks through a frame control domain "network type" in a carrier communication message. In the pilot frequency dual-network mode, the marketing acquisition meter reading network and the equipment configuration network in fig. 3 have different communication frequency bands and the same communication protocol; the communication frequency band of the marketing collection meter reading network can be 0.7-3 MHz, the communication frequency band of the equipment configuration network can be 3-4.2MHz, nodes such as CC01 and STA1 operate different communication frequency bands with nodes such as CCO2 and STA1, and therefore the two networks are isolated. In the heterogeneous dual-network mode, the communication frequency bands and the communication protocols of the marketing acquisition meter reading network and the equipment configuration network in fig. 3 are different; the communication protocol in the marketing acquisition meter reading network can be a national network broadband carrier protocol, the communication frequency range can be 0.7-3 MHz, the communication protocol in the equipment configuration network can be a G3 protocol, and the communication frequency range can be 200-500 kHz.

However, in the above modes of the same-frequency dual-network, different-frequency dual-network, heterogeneous dual-network, and the like, nodes in the marketing acquisition meter reading network and the equipment configuration network are not mutually fused on a communication link, and cannot be relayed by each other during communication, thereby affecting the communication performance of the low-voltage transformer area; for example, as shown in fig. 3, when the root node CC01 communicates with the corresponding slave node STA6, it can only pass through the communication path CCO1- > STA2- > STA5- > STA6, that is, a node in the marketing acquisition meter reading network is used as a relay, because the communication path between the root node CC01 and the slave node STA6 is long, channel attenuation and noise are large, and communication stability and reliability are poor, and meanwhile, a node in the device configuration network cannot be used as a relay, which increases the communication delay between the root node CC01 and the slave node STA6, affects the communication performance of the low-voltage station area, and cannot ensure stable operation of services in the low-voltage station area.

Meanwhile, the nodes in the marketing acquisition meter reading network and the equipment configuration network are positioned in the same distribution area, and belong to two topological networks at a communication link layer, so that the service expansion of a low-voltage distribution area is not facilitated; for example, if the slave node STA2 in fig. 3 is the front table switch in fig. 2, the slave node STA5 is a branch switch located in the same branch as the front table switch; when the line branch identification is performed on the low-voltage station 1 in fig. 3 based on the channel characteristics, since the slave node STA2 and the slave node STA5 do not communicate with each other on the communication link, it is difficult to distinguish that the two are located in the same branch through the channel characteristics between the two, and thus it is difficult to perform an accurate line branch identification service.

In order to solve the above technical problem, the present application provides a communication method for a low voltage power line station (see below for specific description), which is exemplary implemented by configuring a root node and/or a slave node of the low voltage power line station 1 in fig. 1, configuring nodes in the low voltage power line station 1 into a topological network in a low voltage power line station communication link layer, and fusing the nodes on the communication link, so as to improve the communication performance of the low voltage power line station 1 and ensure stable operation of traffic in the low voltage power line station 1; meanwhile, the nodes in the low-voltage transformer area 1 belong to the same topological network, so that the service expansion of the low-voltage transformer area 1 is facilitated, and the service development requirement is met.

It should be noted that the above application scenario described in the embodiment of the present application is for more clearly illustrating the technical solution of the embodiment of the present application, and does not constitute a limitation to the technical solution provided in the embodiment of the present application, and as a person having ordinary skill in the art knows that along with the evolution of a PLC network architecture and the appearance of a new service scenario, and other wired communication network architectures, the technical solution provided in the embodiment of the present application is also applicable to similar technical problems.

The communication method of the low-voltage power line distribution area provided by the embodiment of the present application is specifically described below.

Fig. 4 is a flowchart illustrating a communication method for a low-voltage power line station according to an embodiment of the present application, where the method may include the following steps, as shown in fig. 4:

step 401, the target slave node sends an access network request message to the first root node.

The access network request message comprises identity information of the target slave node. Illustratively, the identity information of the target slave node may include a unique address of the target slave node.

The target slave node may be any slave node, and may include, for example, a slave node corresponding to the first root node and a slave node corresponding to the second root node.

The first root node may be any one of the nodes in the low-voltage transformer area, the second root node may be at least one root node except the first root node in the low-voltage transformer area, the slave node corresponding to the first root node represents one or more slave nodes managed by the first root node in the low-voltage transformer area, and the slave node corresponding to the second root node represents one or more slave nodes managed by the second root node in the low-voltage transformer area, wherein the slave node corresponding to the first root node and the slave node corresponding to the second root node are different nodes.

For example, the low-voltage zone may be low-voltage zone 1 shown in fig. 1, the first root node may be root node CCO1, the second root node may be root node CCO2, and the target slave node may be any one of slave nodes STA1, STA2, STA3 \8230, etc.

Step 402, the first root node receives an access network request message of a target slave node.

Optionally, the first root node may determine the identity information of the target slave node according to the received access network request packet.

And step 403, the first root node determines whether the target slave node is accessed to the low-voltage distribution area where the first root node is located according to the identity information of the target slave node.

It can be understood that the low-voltage transformer area where the first root node is located is the second root node, the slave node corresponding to the first root node, and the low-voltage transformer area where the slave node corresponding to the second root node is located. Or the first root node, the second root node, the slave node corresponding to the first root node and the slave node corresponding to the second root node are in the same low-voltage distribution area.

For example, the first root node may determine, according to the identity information of the target slave node, whether the target slave node is a slave node corresponding to the first root node or a slave node corresponding to the second root node, so as to determine whether the target slave node accesses the low-voltage platform area where the first root node is located.

For example, the first root node may send an access network response message to the target slave node, for example, the first root node may send an access network success message to the target slave node when determining that the target slave node accesses the low-voltage cell where the first root node is located; or when the target slave node is refused to access the low-voltage station where the first root node is located, sending an access network failure message to the target slave node.

Step 404, the target slave node receives an access network response message sent by the first root node.

Exemplarily, if the target slave node receives the access network success message, it indicates that the target slave node is a slave node corresponding to the first root node or a slave node corresponding to the second root node, and has successfully accessed to the low-voltage distribution area where the first root node is located; if the target node receives the access network failure message, it indicates that the target slave node is not a slave node corresponding to the first root node, nor a slave node corresponding to the second root node, and the target slave node cannot access the low-voltage distribution room where the first root node is located.

In the embodiment of the application, the slave node corresponding to the first root node and the slave node corresponding to the second root node can be configured in a topology network in a communication link layer of the low-voltage transformer area, and the nodes in the low-voltage transformer area are mutually fused on the communication link, so that the communication performance of the low-voltage transformer area is improved, and the stable operation of services in the low-voltage transformer area is ensured; meanwhile, the nodes in the low-voltage transformer area belong to the same topological network, so that the service expansion of the low-voltage transformer area is facilitated, and the service development requirement is met.

For example, the first root node and the second root node may be root nodes managed by different departments, the slave nodes corresponding to the first root node and the first root node are nodes managed by the same department, and the slave nodes corresponding to the second root node and the second root node are nodes managed by the same department.

In some examples, the first root node and the slave node corresponding to the first root node may be used for marketing and collecting meter reading services; the second root node and the slave nodes corresponding to the second root node may be used for device configuration services. The device configuration service may include: at least one of line branch identification, power failure fault point study and judgment, line loss analysis and management, line fault early warning, line aging identification or three-phase imbalance treatment. For example, in the low-voltage platform area 1 in fig. 2, the first root node may be a concentrator, the second root node may be a converged terminal, and the slave node corresponding to the first root node may include: the electric energy meter, the meter front switch, the meter and the like, and the slave node corresponding to the second root node may include: branch switch, fault finger, incoming switch, outgoing switch, reactive compensator, leakage protector, etc.

In other examples, the first root node and the slave node corresponding to the first root node may be used for device configuration services; the second root node and the slave node corresponding to the second root node can be used for marketing and collecting meter reading services. For example, in low-voltage zone 1 in fig. 2, the first root node may be a converged terminal, the second root node may be a concentrator, and the slave node corresponding to the first root node may include: branch switch, the finger, the incoming switch, the outgoing switch, reactive power compensator, earth-leakage protector etc. the corresponding slave node of second root node can include: electric energy meter, meter front switch, meter and the like.

Therefore, the nodes managed by different departments in the low-voltage transformer area can be configured in a topological network in the communication link layer of the low-voltage transformer area, and the nodes are mutually communicated on the communication link, so that the communication performance of the low-voltage transformer area is improved, and the stable operation of the marketing acquisition meter reading service and the equipment configuration service is ensured; meanwhile, nodes managed by different departments belong to the same topological network, so that new services can be conveniently expanded, and the development requirements of the services are met.

In one possible implementation, before step 401, the first root node may determine a second root node matching the first root node through pairing.

Fig. 5 is a flowchart illustrating a root node pairing according to an embodiment of the present application, and as shown in fig. 5, the method may include the following steps:

step 501, a first root node monitors a root node in a network.

The network refers to a network near the first root node, which can be monitored by the first root node, and generally includes at least one low-voltage station area, for example, the network may include a low-voltage station area where the first root node is located and a low-voltage station area adjacent to the low-voltage station area where the first root node is located; fig. 6 is a schematic diagram illustrating a root node pairing in the low-voltage platform area 1 in fig. 1, and as shown in fig. 6, the root node CCO1 in the low-voltage platform area 1 may monitor the root node CCO2 in the low-voltage platform area 1 and the root node CCO3 in the low-voltage platform area 2.

Illustratively, the first root node may listen to the root node in the network after first powering up or restarting.

And step 502, the first root node determines a second root node matched with the first root node from the monitored root nodes.

For example, if the first root node locally stores history pairing information, the paired root nodes may be selected from the monitored root nodes according to the history pairing information to perform pairing, so as to determine a second root node matched with the first root node.

For example, after the root node is monitored by the first root node, pairing may be performed based on undisturbed identification, that is, pairing may be performed through at least one of physical communication quality or power line characteristics between the first root node and each monitored root node, so as to determine a second root node matching the first root node. The physical communication quality may include a Signal-to-noise ratio (SNR), and the power line characteristic may include zero-crossing Network Time Base (NTB) information.

In some examples, the first root node may compare SNR or zero crossing point NTB information between the first root node and each monitored root node with a preset threshold, and determine a root node corresponding to the SNR or zero crossing point NTB information exceeding the preset threshold as a second root node matching the first root node. For example, as shown in fig. 6, if the SNR between the root node CCO1 and the root node CCO2 is 30db, the SNR between the root node CCO1 and the root node CCO3 is 10db, and the preset threshold is 25db, it is determined that the root node CCO2 is the root node matching the root node CCO 1.

In other examples, the first root node may perform fast preliminary pairing with the SNR between the first root node and each monitored root node, use the root node corresponding to the highest SNR value as a candidate root node, further perform accurate pairing by using zero-crossing point NTB information between the candidate root node and the first root node, and determine the candidate root node as a second root node matched with the first root node if the zero-crossing point NTB information exceeds a preset threshold. For example, as shown in fig. 6, if the SNR between the root node CCO1 and the root node CCO2 is 30db, and the SNR between the root node CCO1 and the root node CCO3 is 10db, the root node CCO2 may be screened as a candidate root node, and after determining that the zero-crossing point NTB information between the root node CCO1 and the root node CCO2 exceeds the preset threshold, the root node CCO2 may be determined as the root node matching the root node CCO 1.

In the embodiment of the application, the first root node determines a second root node matched with the first root node, and the first root node and the second root node belong to the same low-voltage distribution area, so that the same topological network of a communication link layer in the low-voltage distribution area can be established, managed and maintained together.

Several ways to build the same topology network of the communication link layer in the low-voltage transformer area are specifically described below:

the method I comprises the following steps:

fig. 7 shows a flowchart of an authentication networking according to an embodiment of the present application, and as shown in fig. 7, the method may include the following steps:

step 701, the target slave node sends an access network request message to the first root node.

The specific description of this step can refer to the related description of step 401.

Step 702, the first root node receives an access network request message of a target slave node.

The detailed description of this step can refer to the related description of step 402 above.

And 703, the first root node searches the identity information of the target slave node in a white list (also called an authentication list) corresponding to the first root node, and the first root node sends a successful message of accessing the network to the target slave node under the condition that the identity information of the target slave node belongs to the white list corresponding to the first root node.

The white list corresponding to the first root node may include identity information of a slave node corresponding to the first root node.

For example, the first root node may obtain the white list corresponding to the first root node in advance from the master station, and it may be understood that, as the service develops and a new node needs to join the low-voltage distribution room, the master station may continuously update the white list corresponding to the first root node, and send the updated white list corresponding to the first root node.

Step 704, the target slave node receives the access network success message sent by the first root node.

Therefore, the target slave node is successfully accessed to the low-voltage distribution room where the first root node is located through authentication, and the target slave node is the slave node corresponding to the first root node.

In the method, after receiving an access network request message of a target slave node, a first root node searches identity information of the target slave node in a white list corresponding to the first root node, so as to realize independent authentication networking.

The second method comprises the following steps:

fig. 8 is a flowchart illustrating another authentication networking according to an embodiment of the present application, and as shown in fig. 8, the method may include the following steps:

step 801, the target slave node sends an access network request message to the first root node.

Step 802, the first root node receives an access network request message of a target slave node.

Step 803, the first root node searches the identity information of the target slave node in a white list corresponding to the first root node; and under the condition that the identity information of the target slave node does not belong to the white list corresponding to the first root node, the first root node sends an access network request message of the target slave node to the second root node.

The specific introduction of the white list corresponding to the first root node can refer to the related expression in step 703.

And step 804, the second root node receives an access network request message of the target slave node, which is sent by the first root node.

Step 805, the second root node searches the identity information of the target slave node in a white list corresponding to the second root node; and under the condition that the identity information of the target slave node belongs to a white list corresponding to the second root node, the second root node sends an access network success message to the first root node, and the first root node forwards the access network success message to the target slave node.

The white list corresponding to the second root node includes identity information of the slave node corresponding to the second root node, and exemplarily, the same identity information does not exist in the white list corresponding to the second root node and the white list corresponding to the first root node.

For example, the second root node may obtain the white list corresponding to the second root node in advance from the master station, and it is understood that, as the service develops and a new node needs to join the low-voltage distribution area, the master station may continuously update the white list corresponding to the second root node and send the updated white list corresponding to the second root node.

Step 806, the target slave node receives the access network success message forwarded by the first root node.

Thus, the target slave node is successfully accessed to the low-voltage distribution area where the first root node is located through authentication, and the target slave node is the slave node corresponding to the second root node.

In this way, after receiving the access network request message of the target slave node, the first root node may forward the access network request message to the second root node, so that the first root node and the second root node respectively search the identity information of the target slave node in the corresponding white lists, thereby implementing common authentication networking.

The third method comprises the following steps:

fig. 9 shows a flowchart of another authentication networking according to an embodiment of the present application, and as shown in fig. 9, the method may include the following steps:

and step 901, the second root node sends a white list corresponding to the second root node to the first root node.

The white list corresponding to the second root node may be specifically introduced with reference to the related expression in step 805.

And 902, the first root node receives a white list corresponding to the second root node.

Step 903, the target slave node sends an access network request message to the first root node.

The specific description of this step can refer to the related description of step 401 above.

Step 904, the first root node receives an access network request packet of the target slave node.

It should be noted that, steps 903 and 904 may be executed before step 901, which is not limited.

Step 905, the first root node searches the identity information of the target slave node in a white list corresponding to the first root node and a white list corresponding to the second root node; and under the condition that the identity information of the target slave node belongs to the white list corresponding to the first root node or the white list corresponding to the second root node, the first root node sends an access network success message to the target slave node.

Step 906, the target slave node receives the access network success message sent by the first root node.

In this way, the target slave node successfully accesses the low-voltage distribution area where the first root node is located through authentication, and the target slave node is the slave node corresponding to the first root node or the slave node corresponding to the second root node.

In the method, the second root node authorizes a white list corresponding to the second root node to the first root node, and after receiving the network access request message of the target slave node, the first root node searches the identity information of the target slave node in the white list corresponding to the first root node and the white list corresponding to the second root node, so that authentication networking is realized.

In this way, the authentication networking method shown in fig. 7, 8, and 9 can complete the construction of the same topology network of the communication link layer in the low-voltage station area. Therefore, the nodes in the low-voltage transformer area are mutually fused on the communication link, and at least one of the slave node of the first root node and the slave node corresponding to the second root node, the first root node or the second root node can be used as a relay in a communication path between the two nodes, so that the communication performance of the low-voltage transformer area is improved, and the stable operation of services in the low-voltage transformer area is ensured; meanwhile, the nodes in the low-voltage transformer area belong to the same topological network, so that the service expansion of the low-voltage transformer area is facilitated, and the service development requirement is met.

For example, fig. 10 shows a schematic diagram of a network topology of a communication link layer of the low-voltage station zone 1 in fig. 1 constructed in an embodiment of the present application, as shown in fig. 10, CCO1 and CCO2 are root nodes successfully paired, STA1, STA2, STA3, STA4, STA5, STA6, STA7, and STA8 are slave nodes that pass authentication and successfully access the low-voltage station zone, where STA2, STA3, STA4, STA5, and STA6 are slave nodes corresponding to the root node CCO1, and STA1, STA7, and STA8 are slave nodes corresponding to the root node CCO 2.

Different from the two network topologies of the communication link layer of the low-voltage transformer area 1 in fig. 3, the nodes in fig. 10 are mutually fused on the communication link, and may be relays for each other during communication, for example, when the root node CCO1 communicates with the slave node STA2 corresponding thereto, if the communication path does not include the slave node corresponding to CCO2, multiple slave nodes corresponding to CCO1 are required to forward, the communication path is long, channel attenuation and noise are large, and the communication stability and reliability are poor; if the slave node STA1 corresponding to the CCO2 is used as a relay, the communication between the root node CCO1 and the slave node STA2 can be realized through the communication path CCO1- > STA2, the communication path is shorter, the communication is more stable and reliable, and the communication performance is improved.

Further, the first root node and the second root node may jointly manage and maintain the same topology network of the communication link layer in the low-voltage transformer area. Because the slave node corresponding to the first root node and the slave node corresponding to the second root node are both located in the same topology network, compared with the situation that two root nodes respectively send network maintenance messages in the same-frequency dual-network mode in fig. 3, the first root node and the second root node in the topology network do not need to repeatedly send the network maintenance messages, and the management and maintenance efficiency is improved; meanwhile, communication resources are saved, and stable operation of services in a low-voltage distribution area is ensured.

For example, the communication frequency band in the same established topological network may adopt a wider communication frequency band, and nodes in the topological network may all communicate by adopting the communication frequency band; compared with two non-overlapping communication frequency bands in the frequency domain adopted in the pilot frequency dual-network mode in fig. 3, one communication frequency band adopted in the topological network can effectively avoid communication interference between the two frequency bands, so that the stability and reliability of communication are improved, meanwhile, the wider communication frequency band is adopted, the communication speed is higher, the services of real-time processing services and large message volume can be supported, and the stable operation of the services in the low-voltage station area is ensured.

Illustratively, the communication protocol in the same topology network constructed may adopt national network broadband carrier protocol. Compared with the G3 protocol adopted in the heterogeneous dual-network mode in fig. 3, the broadband carrier protocol of the national network has higher transmission efficiency, higher communication stability and reliability, and better communication performance, and simultaneously can support the services of real-time processing and large message volume, and ensure the stable operation of the services in the low-voltage distribution room.

The following further describes the common management and maintenance of the same topology network constructed by the first root node and the second root node by taking the synchronous network information as an example.

The network information may include routing information, network information of nodes, etc., and the first root node and the second root node may synchronize the routing information, network information of the slave nodes, etc., for example.

Fig. 11 is a flowchart illustrating a method for synchronizing network information according to an embodiment of the present application, and as shown in fig. 11, the method may include the following steps:

step 1101, the first slave node sends network information of the first slave node to the first root node.

The first slave node is any one of the slave nodes corresponding to the first root node, and the network information of the first slave node may include: at least one of offline information of the first slave node or online information of the first slave node.

Step 1102, the first root node receives network information of the first slave node.

Step 1103, the first root node updates the routing information corresponding to the first root node according to the received network information of the first slave node.

The routing information corresponding to the first root node may include at least one of a communication path or a routing metric value between the first root node and a slave node corresponding to the first root node; the routing metric value may include at least one of hop count, path bandwidth, path delay, path utilization, and path reliability.

In this step, the first slave node may determine whether the first slave node is online through the network information of the first slave node, so as to update the routing information (for example, a communication path with the first slave node as a relay or a destination node) corresponding to the first root node, which is related to the first slave node. For example, after the first slave node goes offline, the original communication paths related to the first slave node are no longer available, and the first root node may update these communication paths and may determine corresponding routing metric values; when the first slave node goes online, the first root node uses the first slave node as a destination node for communication, or may use the first slave node as a relay for communication, and then the first root node may update a communication path between the slave nodes corresponding to the first root node, and may determine a corresponding routing metric value.

And 1104, the first root node sends the network information of the first slave node and/or the routing information corresponding to the first root node to the second root node.

For example, the first root node may send the network information of the first slave node to the second root node, and may also send updated routing information corresponding to the first root node to the second root node.

Step 1105, the second root node receives the network information of the first slave node and/or the routing information corresponding to the first root node.

Optionally, after receiving the network information of the first slave node, the second root node may further update the routing information corresponding to the second root node according to the received network information of the first slave node; the step 1103 may be referred to for a specific description of updating the routing information.

In this embodiment of the present application, the first root node may update the routing information corresponding to the first root node according to the received network information of the first slave node, and may actively send the network information of the first slave node and/or the updated routing information corresponding to the first root node to the second root node, thereby implementing network information synchronization between the two root nodes.

Fig. 12 is a flow chart illustrating another method for synchronizing network information according to an embodiment of the present application, and as shown in fig. 12, the method may include the following steps:

step 1201, the first slave node sends the network information of the first slave node to the first root node.

The specific description of this step can refer to the related description of step 1101 above.

Step 1202, the first root node receives network information of the first slave node.

Step 1203, the first root node updates the routing information corresponding to the first root node according to the received network information of the first slave node.

The specific description of this step can refer to the related expression of step 1103.

Step 1204, the second root node sends a request message for acquiring the network information to the first root node.

In this step, the second root node may actively initiate a request to the first root node for network information.

Step 1205, the first root node receives a request message of the second root node for acquiring the network information.

And step 1206, the first root node sends the network information of the first slave node and/or the routing information corresponding to the first root node to the second root node.

The detailed description of this step can refer to the related description of step 1104 above.

Step 1207, the second root node receives network information of the first slave node and/or routing information corresponding to the first root node.

The detailed description of this step can refer to the related description of step 1105.

In this embodiment of the present application, the first root node may update the routing information corresponding to the first root node according to the received network information of the first slave node; meanwhile, the second root node may initiate a request for acquiring network information to the first root node, and after receiving the request of the second root node, the first root node may send the network information of the first slave node and/or updated routing information corresponding to the first root node to the second root node, thereby implementing network information synchronization between the two root nodes.

The following describes a way of performing traffic communication between nodes in the topology network of the communication link layer in the low-voltage station area.

Illustratively, a service message interacted between nodes in the topology network may include a destination node identifier, when any node in the topology network receives the service message, it is first determined whether the node is a destination node indicated by the destination node identifier in the service message, and if the node is a destination node indicated by the destination node identifier, the service message is further analyzed; if the node is not the destination node indicated by the destination node identification, the service message is not analyzed and processed, and is directly forwarded to the next-level node. Thus, when the first root node sends a service message to the slave node corresponding to the first root node, the destination node indicated by the destination node identifier in the service message can be set as the slave node corresponding to the first root node; correspondingly, when the second root node sends the service message to the slave node corresponding to the second root node, the destination node indicated by the destination node identifier in the service message can be set as the slave node corresponding to the second root node, so that the first root node and the second root node independently manage and operate respective services without mutual interference.

Illustratively, when service packet interaction is performed between the first root node and the slave node corresponding to the first root node, the node in the topology network can be used as a relay, so that the communication performance is improved, and stable operation of the service is ensured.

Fig. 13 is a flowchart illustrating a method for performing service communication according to an embodiment of the present application, and as shown in fig. 13, the method may include the following steps:

step 1301, the first root node sends a first service packet.

The first service packet includes a destination node identifier, where the destination node indicated by the destination node identifier is a first slave node, that is, the first service packet is a service packet sent by the first slave node and sent to the first slave node.

For example, the first root node may send the first traffic packet to the second root node after receiving the first traffic packet sent by the master station, and the second root node may further forward the first traffic packet to the first slave node.

For example, the first root node may determine, according to the local routing information, a communication path through which the first traffic packet is sent to the first slave node, where the communication path includes the second root node. The local routing information of the first root node may include routing information corresponding to the first root node, and may also include routing information corresponding to the second root node, which is obtained through network information synchronization.

Illustratively, the first root node sends the first service packet to the second root node in a case that the first root node cannot acquire the routing information reaching the first slave node, where the failure to acquire the routing information reaching the first slave node means that the routing information corresponding to the first root node does not include a communication path between the first root node and the first slave node.

Step 1302, the second root node receives and forwards the first service packet.

Exemplarily, after receiving the first service packet, the second root node determines that the second root node is not the destination node indicated by the destination node identifier in the first service packet, and directly forwards the first service packet to the first slave node without parsing the first service packet.

It is to be understood that the second root node forwards the first service packet to the communication path of the first slave node, and may further include other nodes as relays, for example, a slave node corresponding to the second root node, and a slave node corresponding to the first root node except the first slave node.

And step 1303, the first slave node receives the first service message.

Exemplarily, after receiving the first service packet, the first slave node determines that the first slave node is a destination node indicated by a destination node identifier in the first service packet, and further performs parsing on the first service packet.

In the embodiment of the application, when the first root node sends the service message to the first slave node, the second root node is used as a relay to forward the service message, so that the communication performance is improved, and the stable operation of the service is ensured.

Fig. 14 shows another flow chart of performing service communication according to an embodiment of the present application, and as shown in fig. 14, the method may include the following steps:

step 1401, the first slave node sends a second service packet.

The second service packet includes a destination node identifier, where the destination node indicated by the destination node identifier is the first root node, that is, the second service packet is a service packet sent from the first slave node to the first root node.

For example, the first slave node may determine, according to the local routing information, a communication path through which the second traffic packet is sent to the first root node, where the communication path includes the second root node. Wherein the local routing information of the first slave node may comprise a communication path between the first slave node and the first root node.

It is to be understood that the communication path in which the first slave node sends the second service packet to the second root node may further include other nodes as relays, for example, a slave node corresponding to the second root node, and a slave node corresponding to the first root node except the first slave node.

And 1402, the second root node receives and forwards the second service message.

The detailed description of this step can refer to the related description of step 1302 above.

In this step, the second root node forwards the second service packet to the first root node.

And step 1403, the first root node receives the second service message.

In this step, after receiving the second service packet, the first root node performs parsing on the second service packet, and may further report the parsed data to the master station.

In the embodiment of the application, when the first slave node sends the service message to the first root node, the second root node is used as a relay to forward the service message, so that the communication performance is improved, and the stable operation of the service is ensured.

For example, fig. 15a is a schematic diagram illustrating a service communication between nodes in the low-voltage zone 1 in fig. 1, in fig. 15a, the slave nodes STA1, STA3, and STA5 are slave nodes corresponding to the root node CCO2, and the slave nodes STA2, STA4, and STA6 are slave nodes corresponding to the root node CCO 1. As shown in fig. 15a, when the root node CCO1 sends the traffic packet to the slave node STA6, the communication path may be CCO1- > CCO2- > STA3- > STA6, that is, the root node CCO1 may send the traffic packet to the root node CCO2 and forward the traffic packet to the slave node STA6 (via the slave node STA 3) by the root node CCO 2. Fig. 15b is a schematic diagram illustrating another example of performing service communication among nodes in the low-voltage station area 1 in fig. 1, where in fig. 15b, the slave nodes STA1, STA3, and STA5 are slave nodes corresponding to the root node CCO2, and the slave nodes STA2, STA4, and STA6 are slave nodes corresponding to the root node CCO1; as shown in fig. 15b, when the slave node STA6 sends the service packet to the root node CC01, the communication path may be STA6- > STA3- > CCO2- > CCO1, that is, the slave node STA6 may send the service packet to the root node CCO2 (forwarded via the slave node STA 3), and forward the service packet to the root node CCO1 by the root node CCO2; therefore, bidirectional service message interaction between the root node CCO1 and the slave node STA6 is realized.

Fig. 16 shows another flow chart of performing service communication according to an embodiment of the present application, and as shown in fig. 16, the method may include the following steps:

step 1601, the first root node sends a third service packet.

The third service packet includes a destination node identifier, where the destination node indicated by the destination node identifier is a first slave node, that is, the third service packet is a service packet sent by the first slave node and sent to the first slave node.

Exemplarily, the first root node may determine a communication path according to the routing information corresponding to the first root node, and when the second slave node is taken as a next hop node in the communication path, the first root node sends the third service packet to the second slave node, and the second slave node further forwards the third service packet to the first slave node; wherein the second slave node may be any one of the slave nodes corresponding to the second root node.

For example, the first root node may listen for a slave node that is reachable by one hop, the second slave node may be the slave node that is reachable by one hop and the first root node may forward the third traffic packet through the second slave node.

And step 1602, the second slave node receives and forwards the third service packet.

Step 1603, the first slave node receives the third service packet.

The specific description of this step can refer to the related description of step 1303.

In the embodiment of the application, when the first root node sends the service message to the first slave node, the second slave node is used as a relay to forward the service message, so that the communication performance is improved, and the stable operation of the service is ensured; meanwhile, the message interaction between the first root node and the second root node is reduced and the bandwidth is saved without forwarding through the second root node.

Fig. 17 shows another flow chart of performing service communication according to an embodiment of the present application, and as shown in fig. 17, the method may include the following steps:

step 1701, the first slave node sends a fourth service packet.

The specific description of this step can refer to the related description of step 1401 above.

In this step, the communication path determined by the first slave node to send the fourth service packet to the first root node includes the second slave node.

Step 1702, the second slave node receives and forwards the fourth service packet.

In this step, the second slave node forwards the fourth service packet to the first root node.

Step 1703, the first root node receives the fourth service packet forwarded by the second slave node.

The detailed description of this step can refer to the related description of step 1403.

In the embodiment of the application, when the first slave node sends the service message to the first root node, the second slave node is used as a relay to forward the service message, so that the communication performance is improved, and the stable operation of the service is ensured; meanwhile, the message interaction between the first root node and the second root node is reduced and the bandwidth is saved without forwarding through the second root node.

For example, fig. 18a is a schematic diagram illustrating another traffic communication performed between nodes in the low-voltage zone 1 in fig. 1, in fig. 18a, the slave nodes STA1, STA2, and STA6 are slave nodes corresponding to the root node CCO2, and the slave nodes STA3, STA4, and STA5 are slave nodes corresponding to the root node CCO 1. As shown in fig. 18a, when root node CCO2 sends a traffic packet to slave node STA6, the communication path may be CCO2- > STA3- > STA6, that is, root node CCO2 may send the traffic packet to slave node STA3, and forward the traffic packet to slave node STA6 by slave node STA 3. Fig. 18b is a schematic diagram illustrating another traffic communication between nodes in the low voltage station area 1 of fig. 1; in fig. 18b, the slave nodes STA1, STA2, and STA6 are slave nodes corresponding to the root node CCO2, and the slave nodes STA3, STA4, and STA5 are slave nodes corresponding to the root node CCO1; as shown in fig. 18b, when the slave node STA6 sends the service packet to the root node CCO2, the communication path may be STA6- > STA3- > CCO2, that is, the slave node STA6 may send the service packet to the slave node STA3, and forward the service packet to the root node CCO2 by the slave node STA 3; therefore, bidirectional service message interaction between the root node CCO2 and the slave node STA6 is realized.

In addition to the above manner, the first root node may directly perform traffic communication with the first slave node according to the routing information, or may forward the traffic communication with the first slave node by another slave node except the first slave node among the slave nodes corresponding to other first root nodes. For example, as shown in fig. 15a, when the root node CCO1 performs service communication with the corresponding slave node STA2, the root node CCO1 may directly send a service packet to the slave node STA 2; when the root node CCO1 performs traffic communication with the slave node STA4, the root node CCO1 may transmit a traffic packet to the slave node STA2, and forward the traffic packet to the slave node STA4 by the slave node STA 2.

Thus, the first root node and the slave node corresponding to the first root node may perform service communication in the above manner, for example, when the first root node sends a service packet to the slave node corresponding to the first root node, the service packet may include a destination node identifier and a next-stage node identifier, where the destination node is the slave node corresponding to the first root node; the next-level node may be a slave node corresponding to the second root node, or any slave node except the destination node corresponding to the first root node. When the first slave node sends a service message to the first root node, the service message may include a destination node identifier and a next-level node identifier; the destination node is a first root node, and the next-level node may be a slave node corresponding to the first root node or a slave node corresponding to the second root node.

The method is different from the prior art that when a slave node corresponding to a first root node and a slave node corresponding to a second root node belong to different topology networks in a communication link layer, and a first root node sends a service message to a first slave node, a communication path only can comprise the slave node of the first root node, so that the communication path is possibly longer, the channel attenuation and the noise are larger, and the communication stability and the reliability are poorer; in the embodiment of the present application, because the first root node, the slave node corresponding to the first root node, the second root node, and the slave node corresponding to the second root node belong to the same network at a communication link layer, the first root node may obtain routing information of the slave node of the second root node, when sending a service packet to the first slave node, a communication path may not only include the slave node of the first root node, and the first root node may comprehensively consider the slave node of the first root node, the slave node of the second root node, and select an optimal sending path; that is, when the first root node and the first slave node interact a service packet, the second root node, any one of the slave nodes corresponding to the first root node except the first slave node, or at least one of the slave nodes corresponding to the second root node may be used as a relay to forward the service packet. Meanwhile, when the first root node and the second root node interact service messages with the corresponding slave nodes, the first root node and the second root node independently manage and operate respective services without mutual interference, and service requirements are met.

Further, considering that there is a risk of network congestion when there is a large amount of message interactions in the low-voltage distribution area, the first root node and/or the second root node may also monitor the traffic information in the low-voltage distribution area, and perform bandwidth coordination when the traffic information is too large, thereby ensuring the real-time performance of message transmission and avoiding network congestion.

Fig. 19 shows a flowchart of bandwidth coordination according to an embodiment of the present application, and as shown in fig. 19, the method may include the following steps:

step 1901, the first root node monitors the traffic information in the low-voltage distribution area where the first root node is located.

The flow information includes the total amount of the messages in the low-voltage distribution area where the first root node is located, which is monitored in unit time.

Optionally, the first root node may interact with the second root node about the traffic information that is monitored by the first root node.

Step 1902, the first root node sends a bandwidth negotiation packet to the second root node when the traffic information satisfies the preset condition.

The bandwidth negotiation message is used for determining the priority of each message to be sent in the low-voltage distribution area where the first root node is located.

Illustratively, the preset condition may be that the total amount of messages in the low-voltage distribution room exceeds a certain threshold, and when the flow information exceeds the threshold, it indicates that a large amount of messages to be sent exist in the low-voltage distribution room, and a risk of network congestion exists; at this time, the first root node sends a bandwidth negotiation message to the second root node to trigger bandwidth negotiation.

Step 1903, the second root node receives the bandwidth negotiation packet of the first root node.

It can be understood that, one or more times of bandwidth negotiation message interaction may be performed between the first root node and the second root node, so as to determine the priority of each message to be sent in the low-voltage distribution area.

Exemplarily, the first root node and the second root node may define a same Quality of Service (QoS) mechanism to perform priority classification on each to-be-sent message, that is, set a Service message with strong real-time performance and importance as a high priority, and set a Service message with relatively weak real-time performance as a lower priority; for example, the requirement of charging the electric energy meter on the real-time performance is high, and the requirement of upgrading the electric energy meter on the real-time performance is relatively low, so that the service message for indicating the charging of the electric energy meter can be set to be of high priority, and the service message for indicating the upgrading of the electric energy meter can be set to be of low priority.

Step 1904, the first root node sends each message to be sent according to the determined priority of each message to be sent.

In this step, the first root node preferentially sends the message with high priority in each message to be sent, so as to ensure the real-time performance of the transmission of the message with high priority and ensure the stable operation of the service. For example, each message to be sent includes a service message indicating recharging of the electric energy meter, a service message indicating upgrading of the electric energy meter, and a service message indicating upgrading of the intelligent breaker switch, and then the first root node preferentially sends the service message indicating upgrading of the electric energy meter; and then sending the service message for indicating the upgrading of the electric energy meter and the service message for indicating the upgrading of the intelligent breaker switch according to the priority levels of the two messages.

Step 1905, the second root node sends each message to be sent according to the determined priority of each message to be sent.

This step can be seen in step 1904 above.

In the embodiment of the application, the first root node and the second root node may perform bandwidth coordination when the flow information satisfies the preset condition, and send each message to be sent according to the determined priority of each message to be sent, thereby ensuring the real-time performance of message transmission and avoiding network congestion.

Based on the same inventive concept of the above method embodiment, the embodiment of the present application further provides a communication device for a low voltage power line distribution room, where the communication device for the low voltage power line distribution room may be configured to implement the technical solutions described in the above method embodiments.

Fig. 20 is a schematic structural diagram of a communication device in a low-voltage power line station area according to an embodiment of the present application, and as shown in fig. 20, the device may include: a first receiving module 2001, configured to receive, by a first root node, an access network request packet of a target slave node, where the access network request packet includes identity information of the target slave node; the first networking module 2002 is configured to, by the first root node, determine, according to the identity information of the target slave node, whether the target slave node accesses the low-voltage distribution room where the first root node is located; wherein the target slave node comprises a slave node corresponding to the first root node and a slave node corresponding to the second root node.

In one possible implementation, the first networking module 2002 is further configured to: the first root node searches the identity information of the target slave node in a white list corresponding to the first root node, wherein the white list corresponding to the first root node comprises the identity information of the slave node corresponding to the first root node; under the condition that the identity information of the target slave node belongs to a white list corresponding to the first root node, the first root node sends an access network success message to the target slave node; otherwise, the first root node sends the access network request message to the second root node.

In one possible implementation, the first networking module 2002 is further configured to: the first root node receives an access network request message of the target slave node sent by the second root node; the first root node searches the identity information of the target slave node in a white list corresponding to the first root node; and under the condition that the identity information of the target slave node belongs to the white list corresponding to the first root node, the first root node sends an access network success message to the second root node, and the second root node forwards the access network success message to the target slave node.

In a possible implementation manner, the networking module 2002 is further configured to: the first root node receives a white list corresponding to the second root node; the white list corresponding to the second root node comprises identity information of a slave node corresponding to the second root node; the first root node searches the identity information of the target slave node in a white list corresponding to the first root node and a white list corresponding to the second root node; and under the condition that the identity information of the target slave node belongs to the white list corresponding to the first root node or the white list corresponding to the second root node, the first root node sends an access network success message to the target slave node.

In a possible implementation manner, the networking module 2002 is further configured to: and the first root node sends the white list corresponding to the first root node to the second root node.

In one possible implementation, the apparatus further includes a first pairing module configured to: the first root node monitors a root node in a network; the network comprises at least one low-voltage station area; the first root node determines a second root node matching the first root node among the monitored root nodes.

In one possible implementation, the apparatus further includes a first synchronization module configured to: the first root node receives network information of a slave node corresponding to the first root node, wherein the network information of the slave node corresponding to the first root node comprises: at least one of offline information of a slave node corresponding to the first root node or online information of the slave node corresponding to the first root node; the first root node updates the routing information corresponding to the first root node according to the received network information of the slave node corresponding to the first root node; the routing information corresponding to the first root node comprises at least one of a communication path between the first root node and a slave node corresponding to the first root node or a first routing metric value; the first root node sends network information of a slave node corresponding to the first root node and/or routing information corresponding to the first root node to the second root node; or, the first root node receives network information of a slave node corresponding to the first root node; the first root node updates the routing information corresponding to the first root node according to the received network information of the slave node corresponding to the first root node; the first root node receives a request message of the second root node for acquiring the network information; and the first root node sends network information of a slave node corresponding to the first root node and/or routing information corresponding to the first root node to the second root node.

In one possible implementation manner, the first synchronization module is further configured to: the first root node receives network information of a slave node corresponding to the second root node and/or routing information corresponding to the second root node, which are sent by the second root node; the network information of the slave node corresponding to the second root node includes: at least one of offline information of a slave node corresponding to the second root node or online information of a slave node corresponding to the second root node; the routing information corresponding to the second root node comprises at least one of a communication path between the second root node and a slave node corresponding to the second root node or a second routing metric value; or, the first root node sends a request message for acquiring network information to the second root node; and the first root node receives the network information of the slave node corresponding to the second root node and/or the routing information corresponding to the second root node, which are sent by the second root node.

In a possible implementation manner, the apparatus further includes a first service module, configured to: the first root node sends a first service message, where the first service message includes a first destination node identifier and a next-level node identifier, where the first destination node is a first slave node corresponding to the first root node, the first slave node is any one of slave nodes corresponding to the first root node, the first next-level node is any one of a slave node corresponding to the second root node, or a second slave node corresponding to the first root node, and the second slave node is any one of the slave nodes corresponding to the first root node except the first slave node; or the first root node receives a second service packet, where the second service packet includes a second destination node identifier, and the second destination node is a slave node or the second root node corresponding to the second root node.

In a possible implementation manner, the first service module is further configured to: under the condition that the first root node cannot acquire routing information reaching a destination node, the first root node sends a third service message to the second root node, and the third service message is forwarded to the destination node by the second root node; the destination node is a slave node corresponding to the first root node; or, the first root node receives a fourth service packet forwarded by the second root node, where the fourth service packet is a packet sent to the first root node by a slave node corresponding to the first root node.

In a possible implementation manner, the first service module is further configured to: the first root node sends a fifth service message to a slave node corresponding to the second root node, and the fifth service message is forwarded to a destination node by the slave node corresponding to the second root node; the destination node is a slave node corresponding to the first root node; or, the first root node receives a sixth service packet forwarded by a slave node corresponding to the second root node, where the sixth service packet is a packet sent to the first root node by the slave node corresponding to the first root node.

In one possible implementation, the apparatus further includes a first flow control module configured to: the first root node monitors flow information in a low-voltage distribution room where the first root node is located; the flow information comprises the total amount of the messages of the low-voltage distribution area where the first root node is located, which are monitored in unit time; under the condition that the flow information meets a preset condition, the first root node sends a bandwidth negotiation message to the second root node; the bandwidth negotiation message is used for determining the priority of each message to be sent in a low-voltage platform area where the first root node is located; the first root node sends each message to be sent according to the priority of each message to be sent; or, the first root node receives a bandwidth negotiation message of the second root node, where the bandwidth negotiation message is used to determine the priority of each message to be sent in a low-voltage platform area where the first root node is located; and the first root node transmits each message to be transmitted according to the determined priority of each message to be transmitted.

In the embodiment of the present application, for specific descriptions and technical effects of the communication device in the low voltage power line area and various possible implementations thereof, reference may be made to the foregoing descriptions, which are not repeated herein.

Fig. 21 is a schematic structural diagram of another communication device in a low-voltage power line station area according to an embodiment of the present application, and as shown in fig. 21, the device may include: a second receiving module 2101, configured to receive, by a second root node, an access network request packet of a target slave node, where the access network request packet includes identity information of the target slave node; a second networking module 2102, configured to determine, by the second root node, whether the target slave node accesses a low-voltage distribution area where the second root node is located according to identity information of the target slave node; the target slave node comprises a slave node corresponding to the second root node and a slave node corresponding to the first root node.

In one possible implementation, the second networking module 2102 is further configured to: the second root node receives an access network request message of the target slave node sent by the first root node; the second root node searches the identity information of the target slave node in a white list corresponding to the second root node; the white list corresponding to the second root node comprises identity information of a slave node corresponding to the second root node; and under the condition that the identity information of the target slave node belongs to a white list corresponding to the second root node, the second root node sends an access network success message to the first root node, and the first root node forwards the access network success message to the target slave node.

In a possible implementation, the second networking module 2102 is further configured to: and the second root node sends a white list corresponding to the second root node to the first root node.

In one possible implementation manner, the apparatus further includes a second synchronization module configured to: the second root node receives network information of a slave node corresponding to the first root node and/or routing information corresponding to the first root node, which is sent by the first root node; the network information of the slave node corresponding to the first root node comprises: at least one of offline information of a slave node corresponding to the first root node or online information of a slave node corresponding to the first root node; the routing information corresponding to the first root node comprises at least one of a communication path between the first root node and a slave node corresponding to the first root node or a second routing metric value; or, the second root node sends a request message for acquiring network information to the first root node; and the second root node receives the network information of the slave node corresponding to the first root node and/or the routing information corresponding to the first root node, which are sent by the first root node.

In a possible implementation manner, the apparatus further includes a second service module, configured to: and the second root node receives a first service message, wherein the first service message comprises a first destination node identifier, and the first destination node is a slave node corresponding to the first root node or the first root node.

In a possible implementation manner, the second service module is further configured to: the second root node receives a second service packet sent by the first root node, and forwards the second service packet to a destination node, where the destination node is a slave node corresponding to the first root node; or, the second root node receives a third service packet, and forwards the third service packet to the first root node, where the third service packet is a packet sent from a node corresponding to the first root node.

In one possible implementation, the apparatus further includes a second flow control module configured to: the second root node receives a bandwidth negotiation message of the first root node, wherein the bandwidth negotiation message is used for determining the priority of each message to be sent in a low-voltage distribution room where the second root node is located; and the second root node sends each message to be sent according to the determined priority of each message to be sent.

Fig. 22 is a schematic structural diagram of another communication device in a low-voltage power line station area according to an embodiment of the present application, and as shown in fig. 22, the device may include: a sending module 2201, configured to send, by a first slave node, an access network request packet to a first root node, where the access network request packet includes identity information of the first slave node; a network access module 2202, configured to receive, by the first slave node, an access network success packet sent by the first root node, where the access network success packet is a packet indicating that the first slave node successfully accesses the low-voltage distribution area where the first root node is located; wherein the first slave node includes a slave node corresponding to the first root node and a slave node corresponding to the second root node.

In a possible implementation manner, the apparatus further includes a reporting module, configured to send, by the first slave node to the first root node, network information of the first slave node to the first root node when the first slave node is a slave node corresponding to the first root node, where the network information of the first slave node includes: at least one of offline information of the first slave node or online information of the first slave node.

In a possible implementation manner, the apparatus further includes a third service module, configured to send a first service packet by the first slave node, where the first service packet includes a first destination node identifier and a next-level node identifier; when the first slave node is a slave node corresponding to the first root node, the first destination node is the first root node, and the first lower-level node is a slave node corresponding to the first root node or a slave node corresponding to the second root node; or, the first slave node receives a second service packet, where the second service packet includes a second destination node identifier; and in a case that the first slave node is a slave node corresponding to the first root node, the second destination node is the second root node or a slave node corresponding to the second root node.

In a possible implementation manner, the third service module is further configured to: the first slave node receives a third service packet sent by the first root node, and forwards the third service packet to a destination node, wherein the destination node is a slave node corresponding to the first root node; or, the first slave node receives a fourth service packet, and forwards the fourth service packet to the first root node, where the fourth service packet is a packet sent to the first root node by the slave node corresponding to the first root node.

In a possible implementation manner, the first root node is configured to acquire a meter reading service in marketing, and the second root node is configured to perform an equipment configuration service; the device configuration service includes: at least one of line branch identification, power failure fault point study and judgment, line loss analysis and management, line fault early warning, line aging identification and three-phase imbalance treatment; or, the first root node is used for equipment configuration service, and the second root node is used for marketing acquisition meter reading service.

The embodiment of the application provides another communication device for a low-voltage power line station area, which may include: a processor and a transmission interface; the processor receives or sends data through the transmission interface; the processor is configured to implement the communication method of the low power line station area in any of the above embodiments when executing the instructions stored in the memory.

Fig. 23 is a schematic structural diagram of another communication device in a low-voltage power line station area according to an embodiment of the present application, and as shown in fig. 23, the device may include: at least one processor 2301, communication lines 2302, memory 2303 and at least one transmission interface 2304.

The processor 2301 may be a general-purpose Central Processing Unit (CPU), microprocessor, application-specific integrated circuit (ASIC), or one or more ics for controlling the execution of programs in accordance with the teachings of the present disclosure.

The communication links 2302 may include a pathway for transferring information between the aforementioned components.

The transmission interface 2304 may be any device, such as a transceiver, for communicating with other devices or communication networks, such as ethernet, RAN, PLC network, wireless Local Area Network (WLAN), etc.

The memory 2303 may be, but is not limited to, a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a Random Access Memory (RAM) or other type of dynamic storage device that can store information and instructions, an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compact disc, laser disc, optical disc, digital versatile disc, blu-ray disc, etc.), magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. The memory may be separate and coupled to the processor via communication lines 2302. The memory may also be integral to the processor. The memory provided by the embodiment of the application can be generally nonvolatile. The memory 2303 is used for storing computer-executable instructions for executing the present application, and the processor 2301 controls the execution. The processor 2301 is configured to execute computer-executable instructions stored in the memory 2303 to implement the methods provided in any of the embodiments described above in the present application.

Optionally, the computer-executable instructions in the embodiments of the present application may also be referred to as application program codes, which are not specifically limited in the embodiments of the present application.

In particular implementations, processor 2301 may include one or more CPUs, such as CPU0 and CPU1 in fig. 23, as an example.

In particular implementations, the communication device may include multiple processors, such as the processor 2301 and the processor 2307 in fig. 23, as one embodiment. Each of these processors may be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor. A processor herein may refer to one or more devices, circuits, and/or processing cores that process data (e.g., computer program instructions).

In particular implementations, the apparatus may also include an output device 2305 and an input device 2306, as one embodiment. The output device 2305 is in communication with the processor 2301 and can display information in a variety of ways. For example, the output device 2305 may be a Liquid Crystal Display (LCD), a Light Emitting Diode (LED) display device, a Cathode Ray Tube (CRT) display device, a projector (projector), or the like. The input device 2306 is in communication with the processor 2301 and can receive user input in a variety of ways. For example, the input device 2306 may be a mouse, keyboard, touch screen device, or sensing device, among others.

As an example, in conjunction with the apparatus shown in fig. 23, the first receiving module 2001 in fig. 20 may be implemented by the transmission interface 2304 in fig. 23, and the first networking module 2002 may be implemented by the processor 2301 in fig. 23, which is not limited in this embodiment.

As another example, in conjunction with the apparatus shown in fig. 23, the second receiving module 2101 in fig. 21 may be implemented by the transmission interface 2304 in fig. 23, and the second networking module 2102 may be implemented by the processor 2301 in fig. 23, which is not limited in this embodiment.

As another example, in conjunction with the apparatus shown in fig. 23, the sending module 2201 in fig. 22 may be implemented by the transmission interface 2304 in fig. 23, and the network accessing module 2202 in fig. 23 may be implemented by the processor 2301 in fig. 23, which is not limited in this embodiment of the application.

Embodiments of the present application provide a computer-readable storage medium, on which computer program instructions are stored, and when the computer program instructions are executed by a computer or a processor, the method provided in any of the above embodiments of the present application is implemented. Illustratively, the method of the transmitting side or the receiving side in at least one of fig. 4, fig. 5, fig. 7, fig. 8, fig. 9, fig. 11, fig. 12, fig. 13, fig. 14, fig. 16, fig. 17, or fig. 19 described above may be performed.

Embodiments of the present application provide a computer program product comprising instructions which, when executed on a computer or processor, cause the computer or processor to perform a method as provided in any of the above embodiments of the present application. Illustratively, the method of the transmitting side or the receiving side in at least one of fig. 4, fig. 5, fig. 7, fig. 8, fig. 9, fig. 11, fig. 12, fig. 13, fig. 14, fig. 16, fig. 17, or fig. 19 described above may be performed.

The computer-readable storage medium may be a tangible device that can hold and store the instructions for use by the instruction execution device. The computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, semiconductor memory device, or any suitable combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: a portable computer diskette, a hard disk, a Random Access Memory (RAM), a Read-Only Memory (ROM), an erasable Programmable Read-Only Memory (EPROM or flash Memory), a Static Random Access Memory (SRAM), a portable Compact Disc Read-Only Memory (CD-ROM), a Digital Versatile Disc (DVD), a Memory stick, a floppy disk, a mechanical coding device, a punch card or an in-groove protrusion structure, for example, having instructions stored thereon, and any suitable combination of the foregoing.

The computer readable program instructions or code described herein may be downloaded to the respective computing/processing device from a computer readable storage medium, or to an external computer or external storage device via a network, such as the internet, a local area network, a wide area network, and/or a wireless network. The network may include copper transmission cables, fiber optic transmission, wireless transmission, routers, firewalls, switches, gateway computers and/or edge servers. The network adapter card or network interface in each computing/processing device receives the computer-readable program instructions from the network and forwards the computer-readable program instructions for storage in a computer-readable storage medium in the respective computing/processing device.

The computer program instructions for carrying out operations of the present application may be assembler instructions, instruction Set Architecture (ISA) instructions, machine-related instructions, microcode, firmware instructions, state setting data, or source code or object code written in any combination of one or more programming languages, including an object oriented programming language such as Smalltalk, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The computer readable program instructions may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of Network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider). In some embodiments, the electronic circuitry can execute computer-readable program instructions to implement aspects of the present application by utilizing state information of the computer-readable program instructions to personalize custom electronic circuitry, such as Programmable Logic circuits, field-Programmable Gate arrays (FPGAs), or Programmable Logic Arrays (PLAs).

Various aspects of the present application are described herein with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each block of the flowchart illustrations and/or block diagrams, and combinations of blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer-readable program instructions.

These computer-readable program instructions may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions/acts specified in the flowchart and/or block diagram block or blocks. These computer-readable program instructions may also be stored in a computer-readable storage medium that can direct a computer, programmable data processing apparatus, and/or other devices to function in a particular manner, such that the computer-readable medium storing the instructions comprises an article of manufacture including instructions which implement the function/act specified in the flowchart and/or block diagram block or blocks.

The computer readable program instructions may also be loaded onto a computer, other programmable data processing apparatus, or other devices to cause a series of operational steps to be performed on the computer, other programmable apparatus or other devices to produce a computer implemented process such that the instructions which execute on the computer, other programmable apparatus or other devices implement the functions/acts specified in the flowchart and/or block diagram block or blocks.

The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, systems, methods and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of instructions, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved.

It is also noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by hardware (e.g., a Circuit or an ASIC) for performing the corresponding function or action, or by combinations of hardware and software, such as firmware.

While the invention has been described in connection with various embodiments, other variations to the disclosed embodiments can be understood and effected by those skilled in the art in practicing the claimed invention, from a review of the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other elements or steps, and the word "a" or "an" does not exclude a plurality. A single processor or other unit may fulfill the functions of several items recited in the claims. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.

The foregoing description of the embodiments of the present application has been presented for purposes of illustration and description and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A communication method for a low-voltage power line station, the method comprising:

a first root node receives an access network request message of a target slave node, wherein the access network request message comprises identity information of the target slave node;

the first root node determines whether the target slave node is accessed to a low-voltage distribution area where the first root node is located according to the identity information of the target slave node;

wherein the target slave node comprises a slave node corresponding to the first root node and a slave node corresponding to the second root node.

2. The method according to claim 1, wherein the first root node determines whether the target slave node accesses the low-voltage area where the first root node is located according to the identity information of the target slave node, including:

the first root node searches the identity information of the target slave node in a white list corresponding to the first root node, wherein the white list corresponding to the first root node comprises the identity information of the slave node corresponding to the first root node;

under the condition that the identity information of the target slave node belongs to a white list corresponding to the first root node, the first root node sends an access network success message to the target slave node;

otherwise, the first root node sends the access network request message to the second root node.

3. The method according to claim 1 or 2, characterized in that the method further comprises:

the first root node receives an access network request message of the target slave node sent by the second root node;

the first root node searches the identity information of the target slave node in a white list corresponding to the first root node;

and under the condition that the identity information of the target slave node belongs to the white list corresponding to the first root node, the first root node sends an access network success message to the second root node, and the second root node forwards the access network success message to the target slave node.

4. The method according to claim 1 or 3, wherein the determining, by the first root node, whether the target slave node accesses the low-voltage area where the first root node is located according to the identity information of the target slave node comprises:

the first root node receives a white list corresponding to the second root node; the white list corresponding to the second root node comprises identity information of a slave node corresponding to the second root node;

the first root node searches the identity information of the target slave node in a white list corresponding to the first root node and a white list corresponding to the second root node;

and under the condition that the identity information of the target slave node belongs to the white list corresponding to the first root node or the white list corresponding to the second root node, the first root node sends an access network success message to the target slave node.

5. The method according to any one of claims 1-4, further comprising: and the first root node sends a white list corresponding to the first root node to the second root node.

6. The method according to any one of claims 1-5, further comprising:

the first root node monitors a root node in a network; the network comprises at least one low-voltage station area;

the first root node determines a second root node matching the first root node among the monitored root nodes.

7. The method according to any one of claims 1-6, further comprising:

the first root node receives network information of a slave node corresponding to the first root node, wherein the network information of the slave node corresponding to the first root node comprises: at least one of offline information of a slave node corresponding to the first root node or online information of a slave node corresponding to the first root node;

the first root node updates the routing information corresponding to the first root node according to the received network information of the slave node corresponding to the first root node; the routing information corresponding to the first root node comprises at least one of a communication path between the first root node and a slave node corresponding to the first root node or a first routing metric value;

the first root node sends network information of a slave node corresponding to the first root node and/or routing information corresponding to the first root node to the second root node;

or,

the first root node receives network information of a slave node corresponding to the first root node;

the first root node updates the routing information corresponding to the first root node according to the received network information of the slave node corresponding to the first root node;

the first root node receives a request message of the second root node for acquiring the network information;

and the first root node sends network information of a slave node corresponding to the first root node and/or routing information corresponding to the first root node to the second root node.

8. The method according to any one of claims 1-6, further comprising:

the first root node receives network information of a slave node corresponding to the second root node and/or routing information corresponding to the second root node, which are sent by the second root node; the network information of the slave node corresponding to the second root node includes: at least one of offline information of a slave node corresponding to the second root node or online information of a slave node corresponding to the second root node; the routing information corresponding to the second root node comprises at least one of a communication path between the second root node and a slave node corresponding to the second root node or a second routing metric value;

or,

the first root node sends a request message for acquiring network information to the second root node;

and the first root node receives network information of a slave node corresponding to the second root node and/or routing information corresponding to the second root node, which are sent by the second root node.

9. The method according to any one of claims 1-8, further comprising:

the first root node sends a first service message, where the first service message includes a first destination node identifier and a next-level node identifier, where the first destination node is a first slave node corresponding to the first root node, the first slave node is any one of slave nodes corresponding to the first root node, the first next-level node is any one of a slave node corresponding to the second root node, or a second slave node corresponding to the first root node, and the second slave node is any one of the slave nodes corresponding to the first root node except the first slave node;

or,

and the first root node receives a second service message, wherein the second service message comprises a second destination node identifier, and the second destination node is a slave node corresponding to the second root node or the second root node.

10. The method according to any one of claims 1-9, further comprising:

under the condition that the first root node cannot acquire routing information reaching a destination node, the first root node sends a third service message to the second root node, and the third service message is forwarded to the destination node by the second root node; the destination node is a slave node corresponding to the first root node; or,

and the first root node receives a fourth service message forwarded by the second root node, where the fourth service message is a message sent to the first root node by a slave node corresponding to the first root node.

11. The method according to any one of claims 1-10, further comprising:

the first root node monitors flow information in a low-voltage distribution room where the first root node is located; the flow information comprises the total amount of the messages of the low-voltage distribution area where the first root node is located, which are monitored in unit time;

under the condition that the flow information meets a preset condition, the first root node sends a bandwidth negotiation message to the second root node; the bandwidth negotiation message is used for determining the priority of each message to be sent in a low-voltage distribution area where the first root node is located;

the first root node sends each message to be sent according to the priority of each message to be sent;

or,

the first root node receives a bandwidth negotiation message of the second root node, wherein the bandwidth negotiation message is used for determining the priority of each message to be sent in a low-voltage platform area where the first root node is located;

and the first root node transmits each message to be transmitted according to the determined priority of each message to be transmitted.

12. The method of any of claims 1-11, wherein the first root node is for a marketing collection meter reading service and the second root node is for a device configuration service; the device configuration service includes: at least one of line branch identification, power failure fault point study and judgment, line loss analysis and management, line fault early warning, line aging identification or three-phase imbalance treatment;

or, the first root node is used for equipment configuration service, and the second root node is used for marketing acquisition meter reading service.

13. A communication method for a low-voltage power line station, the method comprising:

a first slave node sends an access network request message to a first root node, wherein the access network request message comprises identity information of the first slave node;

the first slave node receives an access network success message sent by the first root node, wherein the access network success message is a message indicating that the first slave node successfully accesses a low-voltage distribution room where the first root node is located;

wherein the first slave node includes a slave node corresponding to the first root node and a slave node corresponding to the second root node.

14. The method of claim 13, further comprising:

if the first slave node is a slave node corresponding to the first root node, the first slave node sends network information of the first slave node to the first root node, where the network information of the first slave node includes: at least one of offline information of the first slave node or online information of the first slave node.

15. The method according to claim 13 or 14, characterized in that the method further comprises:

the first slave node sends a first service message, wherein the first service message comprises a first destination node identifier and a next-level node identifier;

when the first slave node is a slave node corresponding to the first root node, the first destination node is the first root node, and the first lower-level node is a slave node corresponding to the first root node or a slave node corresponding to the second root node;

or,

the first slave node receives a second service message, wherein the second service message comprises a second destination node identifier;

and in a case that the first slave node is a slave node corresponding to the first root node, the second destination node is the second root node or a slave node corresponding to the second root node.

16. The method of any of claims 13-15, wherein the first root node is configured for a marketing collection meter reading service and the second root node is configured for a device configuration service; the device configuration service includes: at least one of line branch identification, power failure fault point study and judgment, line loss analysis and management, line fault early warning, line aging identification and three-phase imbalance treatment;

17. A communication device for a low-voltage power line station, comprising: a receiving module, configured to receive, by a first root node, an access network request packet of a target slave node, where the access network request packet includes identity information of the target slave node; the networking module is used for determining whether the target slave node is accessed to a low-voltage distribution area where the first root node is located or not by the first root node according to the identity information of the target slave node; wherein the target slave node comprises a slave node corresponding to the first root node and a slave node corresponding to the second root node.

18. The apparatus of claim 17, wherein the networking module is further configured to: the first root node searches the identity information of the target slave node in a white list corresponding to the first root node, wherein the white list corresponding to the first root node comprises the identity information of the slave node corresponding to the first root node; under the condition that the identity information of the target slave node belongs to a white list corresponding to the first root node, the first root node sends an access network success message to the target slave node; otherwise, the first root node sends the access network request message to the second root node.

19. The apparatus of claim 17 or 18, wherein the networking module is further configured to: the first root node receives an access network request message of the target slave node sent by the second root node; the first root node searches the identity information of the target slave node in a white list corresponding to the first root node; and under the condition that the identity information of the target slave node belongs to the white list corresponding to the first root node, the first root node sends an access network success message to the second root node, and the second root node forwards the access network success message to the target slave node.

20. The apparatus of claim 17 or 19, wherein the networking module is further configured to: the first root node receives a white list corresponding to the second root node; the white list corresponding to the second root node comprises identity information of a slave node corresponding to the second root node; the first root node searches the identity information of the target slave node in a white list corresponding to the first root node and a white list corresponding to the second root node; and under the condition that the identity information of the target slave node belongs to the white list corresponding to the first root node or the white list corresponding to the second root node, the first root node sends an access network success message to the target slave node.

21. The apparatus according to any one of claims 17-20, wherein the networking module is further configured to: and the first root node sends a white list corresponding to the first root node to the second root node.

22. The apparatus according to any of claims 17-21, wherein the apparatus further comprises a pairing module configured to: the first root node monitors a root node in a network; the network includes at least one low-voltage zone; the first root node determines a second root node matching the first root node among the monitored root nodes.

23. The apparatus according to any of claims 17-22, further comprising a synchronization module configured to: the first root node receives network information of a slave node corresponding to the first root node, wherein the network information of the slave node corresponding to the first root node comprises: at least one of offline information of a slave node corresponding to the first root node or online information of a slave node corresponding to the first root node; the first root node updates the routing information corresponding to the first root node according to the received network information of the slave node corresponding to the first root node; the routing information corresponding to the first root node comprises at least one of a communication path between the first root node and a slave node corresponding to the first root node or a first routing metric value; the first root node sends network information of a slave node corresponding to the first root node and/or routing information corresponding to the first root node to the second root node; or the first root node receives network information of a slave node corresponding to the first root node; the first root node updates the routing information corresponding to the first root node according to the received network information of the slave node corresponding to the first root node; the first root node receives a request message of the second root node for acquiring the network information; and the first root node sends network information of a slave node corresponding to the first root node and/or routing information corresponding to the first root node to the second root node.

24. The apparatus according to any of claims 17-23, wherein the apparatus further comprises a traffic module configured to: the first root node sends a first service message, where the first service message includes a first destination node identifier and a next-level node identifier, where the first destination node is a first slave node corresponding to the first root node, the first slave node is any one of slave nodes corresponding to the first root node, the first next-level node is any one of a slave node corresponding to the second root node, or a second slave node corresponding to the first root node, and the second slave node is any one of the slave nodes corresponding to the first root node except the first slave node; or the first root node receives a second service packet, where the second service packet includes a second destination node identifier, and the second destination node is a slave node or the second root node corresponding to the second root node.

25. A communication device for a low voltage power line station, the device comprising: a sending module, configured to send, by a first slave node, an access network request packet to a first root node, where the access network request packet includes identity information of the first slave node; the network access module is used for the first slave node to receive an access network success message sent by the first root node, wherein the access network success message is a message indicating that the first slave node successfully accesses the low-voltage distribution room where the first root node is located; wherein the first slave node includes a slave node corresponding to the first root node and a slave node corresponding to the second root node.

26. The apparatus of claim 25, further comprising a reporting module, configured to, if the first slave node is a slave node corresponding to the first root node, send, by the first slave node, network information of the first slave node to the first root node, where the network information of the first slave node includes: at least one of offline information of the first slave node or online information of the first slave node.

27. The apparatus according to claim 25 or 26, wherein the apparatus further comprises a service module, configured to send a first service packet from the first slave node, where the first service packet includes a first destination node identifier and a next node identifier; when the first slave node is a slave node corresponding to the first root node, the first destination node is the first root node, and the first lower-level node is a slave node corresponding to the first root node or a slave node corresponding to the second root node; or, the first slave node receives a second service packet, where the second service packet includes a second destination node identifier; and if the first slave node is a slave node corresponding to the first root node, the second destination node is the second root node or a slave node corresponding to the second root node.

28. A communication device for a low-voltage power line station, comprising:

a processor and a transmission interface; the processor receives or sends data through the transmission interface;

the processor is configured to implement the method of any of claims 1-12 or the method of any of claims 13-16 when executing instructions stored in the memory.

29. A computer readable storage medium having computer program instructions stored thereon, the computer program instructions when executed by a computer or processor implementing the method of any of claims 1-12 or the method of any of claims 13-16.

30. A computer program product comprising instructions which, when run on a computer or processor, cause the computer or processor to perform the method of any of claims 1-12 or the method of any of claims 13-16.