CN216699614U - Distribution transformer tap temperature control device based on IP wireless communication - Google Patents
Distribution transformer tap temperature control device based on IP wireless communication Download PDFInfo
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Abstract
The utility model discloses a distribution transformer tap temperature control device based on IP wireless communication, which comprises a data acquisition module, an intelligent terminal module and a remote receiving and processing module, wherein the intelligent terminal module comprises a distribution transformer terminal analysis submodule and a distribution transformer terminal communication submodule, the distribution transformer terminal analysis submodule is respectively connected with the data acquisition module and the distribution transformer terminal communication submodule, and the distribution transformer terminal communication submodule is connected with the remote receiving and processing module. The utility model can transmit information through the distribution transformer terminal communication submodule, carry out wireless networking communication through the neighborhood network communication unit, the wide area network communication unit and the network operation center processing unit, carry out safety and network management of the field area network FAN through the field area network safety protection unit and the field area network management unit, enable the electric power terminal to meet the networking requirement, and effectively improve the operation efficiency of the device by combining the data acquisition module and the remote receiving and processing module.
Description
Technical Field
The utility model relates to the technical field of power systems, in particular to a distribution transformer tap temperature control device based on IP wireless communication.
Background
Because a large number of nodes are arranged in a power distribution system of a power grid, along with the increase of equipment and the diversification of the equipment, the acquisition, the monitoring, the management and the fault removal of the information of each node are greatly difficult. The method has the advantages that the information of each node device is timely and effectively acquired, the utilization efficiency and the safety level of electric power energy are improved, and the method is a difficult problem for all power grid companies.
In different environments, different communication modes such as wired, wireless, 3G, or 4G may be deployed, which increases the difficulty in system compatibility and conversion of background data collection.
When data is transmitted over low power and lossy networks (LLNs), the transmission rate may explode to 60% -90% of the total link bandwidth, causing unpredictable errors or connection loss.
Due to the lack of characteristics of NSF and ISSU in the power grid configuration network, the node failure rate is significantly higher than that of nodes in a traditional IP (Internet protocol) network. The traditional protocol cannot meet the interconnection of a large number of devices and cannot meet the networking requirements of a high-constraint and unstable environment.
For example, chinese patent CN202837447U, published 2013, 3, 27, a tap position detector for distribution transformers, which is mainly composed of a circuit part for detecting the resistance of a tap winding coil and a 485 data communication part for coupling and electrically connecting with a distribution transformer terminal. The utility model further discloses a distribution and transformation tap position detection system, and the distribution and transformation tap position detector and a distribution and transformation terminal are subjected to data interaction, so that the function of remotely monitoring the tap position state of the transformer in real time is realized. The utility model provides a detection method based on the distribution transformer tap gear detection system, which can acquire and display the state and the resistance value of a transformer tap in real time and upload the state and the resistance value to a terminal system. The communication protocol of the method has the problem that the networking requirement of a high-constraint and unstable environment cannot be met.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is as follows: the information transmission part of the current distribution transformer tap control device has the technical problem that the communication protocol cannot meet the networking requirements of high constraint and unstable environment. The distribution transformer tap temperature control device based on the IP wireless communication is provided, wherein the power terminal can transmit communication flow so as to meet the networking requirement.
In order to solve the technical problems, the technical scheme adopted by the utility model is as follows: a distribution transformer tap temperature control device based on IP wireless communication comprises a data acquisition module, an intelligent terminal module and a remote receiving and processing module, the intelligent terminal module comprises a distribution transformer terminal analysis submodule and a distribution transformer terminal communication submodule which are respectively connected with the distribution transformer terminal analysis submodule and the remote receiving and processing module, the data acquisition module comprises a distribution transformer tap resistance value acquisition unit, a distribution transformer tap temperature acquisition unit and an information transmission unit, the distribution transformer tap resistance value acquisition unit and the distribution transformer tap temperature acquisition unit are both connected with the information transmission unit, the information transmission unit is connected with the distribution transformer terminal analysis submodule, and the distribution transformer terminal communication submodule comprises a neighborhood network communication unit, a wide area network communication unit and a network operation center processing unit.
The utility model provides a change distribution tap temperature control device based on IP ization wireless communication, gathers the state data of change distribution tap through data acquisition module, gathers the data state information of change distribution tap through change distribution tap resistance acquisition unit and change distribution tap temperature acquisition unit, and the information transmission unit is the transmission port and gives intelligent terminal module with the information transmission who gathers. The intelligent terminal module analyzes received data through the distribution transformer terminal analysis submodule, an analysis result is transmitted to the remote receiving processing module through the distribution transformer terminal communication submodule to be processed, and the distribution transformer terminal communication submodule carries out wireless communication through the neighborhood network communication unit, the wide area network communication unit and the network operation center processing unit so as to meet the networking requirements of high-constraint and unstable environments.
Preferably, the distribution terminal communication submodule further includes a node message control unit, and the node message control unit includes a DIS information control unit, a DIO information control unit, and a DAO information control unit. The wireless nodes after power-on establish a network by 3 kinds of RPL messages of DIO/DIS/DAO among each other.
Preferably, the wide area network communication unit includes a point-to-point traffic transmission sub-unit, a point-to-multipoint traffic transmission sub-unit, and a multipoint-to-multipoint traffic transmission sub-unit.
The wide area network is a backhaul network connecting the FAN to the NOC through the field area network FAR, and may use optical fibers, ethernet private networks (multiple spanning tree protocol MSTP, multi-protocol label switching private MPLS VPN, passive optical access system GPON, or optical network terminal ONT), worldwide interoperability for microwave access WiMAX, 3G/4G, various types of digital subscriber lines xDSL, etc., and authentication and encryption are required for security.
Preferably, the network operation center processing unit includes a network operation center application program management subunit, a network operation center network service subunit and an interconnected power grid network management subunit.
The network operation center, NOC, is composed of three sub-units, corresponding to the three sub-units of the network operation center processing unit: NOC application server, NOC network service and internet power network management system (CG-NMS).
Preferably, the distribution transformer terminal communication submodule further comprises a field area network management unit and a field area network security protection unit. And the distribution terminal communication submodule carries out the security and network management of the field area network FAN through the field area network security protection unit and the field area network management unit.
Preferably, the field area network management unit includes a network admission control subunit, a user management subunit, a key management subunit and a data security subunit.
The field network management unit is used for network admission control, AAA (user authentication, authorization and record), key management and data security.
Preferably, the field area network security protection unit includes a wide area network security subunit, a security identification subunit, a security isolation subunit, and a physical security subunit.
For the security of the field area network FAN, a multi-layer defense architecture can be adopted: the field area network security protection unit is used for wide area network security (Ipv4 and Ipv6 routing and traffic filtering), security identification (certificate identification), security isolation (VLAN, MPLS VPN, different tunnel access) and physical security (alarm is generated when CGR is touched).
The substantial effects of the utility model are as follows: the utility model can transmit information through the distribution transformer terminal communication submodule, the node message control unit establishes a network through 3 RPL messages of DIO/DIS/DAO, wireless networking communication is carried out through the neighborhood network communication unit, the wide area network communication unit and the network operation center processing unit, and the field area network safety protection unit and the field area network management unit are used for carrying out field area network FAN safety and network management, so that the power terminal can meet the networking requirement, has universal multi-service communication capability, and effectively improves the operation efficiency of the device by combining the data acquisition module and the remote receiving processing module.
Drawings
Fig. 1 is a schematic composition diagram of the present embodiment.
Wherein: 1. data acquisition module, 2, intelligent terminal module, 3, remote receipt processing module, 4, join in marriage and become terminal analysis submodule piece, 5, join in marriage and become terminal communication submodule piece, 6, neighborhood net communication unit, 7, wide area network communication unit, 8, network operation central processing unit, 9, join in marriage and become the tap resistance acquisition unit, 10, join in marriage and become tap temperature acquisition unit, 11, information transmission unit.
Detailed Description
The following provides a more detailed description of the present invention, with reference to the accompanying drawings.
A distribution and transformation tap temperature control device based on IP wireless communication is shown in figure 1 and comprises a data acquisition module 1, an intelligent terminal module 2 and a remote receiving and processing module 3, wherein the data acquisition module 1 comprises a distribution and transformation tap resistance acquisition unit 9, a distribution and transformation tap temperature acquisition unit 10 and an information transmission unit 11, the distribution and transformation tap resistance acquisition unit 9 and the distribution and transformation tap temperature acquisition unit 10 are connected with the information transmission unit 11, and the information transmission unit 11 is connected with a distribution and transformation terminal analysis submodule 4. The data state information of the distribution transformer tap is acquired through the distribution transformer tap resistance acquisition unit 9 and the distribution transformer tap temperature acquisition unit 10, and the acquired information is transmitted to the intelligent terminal module 2 through the information transmission unit 11, namely a transmission port.
The intelligent terminal module 2 comprises a distribution transformer terminal analysis submodule 4 and a distribution transformer terminal communication submodule 5, the distribution transformer terminal analysis submodule 4 is respectively connected with the data acquisition module 1 and the distribution transformer terminal communication submodule 5, the distribution transformer terminal communication submodule 5 is connected with the remote receiving and processing module 3, and the distribution transformer terminal communication submodule 5 comprises a neighborhood network communication unit 6, a wide area network communication unit 7 and a network operation center processing unit 8.
The neighborhood network NAN is composed of a Field Area network Router (FAR, Field Area Router) and a distribution network automation and remote workflow management terminal connected thereto. The terminal device uses a 6LoWPAN connection field area network router such as Ethernet, serial port, WiFi or RF (radio frequency) Mesh, PLC (Programmable Logic Controller) Mesh and the like. The entire NAN is managed uniformly by CG-NMS (Connected Grid-Network Management Systems), and the field area Network routers may also be managed locally using CG-dm (device manager). The neighborhood network NAN internally runs a Low-Power Lossy network Protocol rpl (routing Protocol for Low Power and loss network):
IEEE 802.15.4g/e RF Mesh uses 902 to 928MHz, every 400kHz is interval, and 64 non-overlapping frequency bands are used, and the specific used frequency band can be defined according to regional regulations.
An Ethernet running Ipv4/IPv6, three tiers IEC 60870-5-104(T104),
the serial port supports RS-232/RS-485 equipment and conforms to IEC 60870-5-101 (T101). Further, CGR1000 may perform T101 to T104 protocol conversion. The supporting RS-232/RS-485 equipment conforms to DNP 3. And the RS-232/RS-485 equipment is supported to connect and transmit a serial port protocol through RAW TCP.
Remote workflow management is performed through a wire or a WiFI wireless network carried by the CGR 1000. The intelligent power terminal uses a CG-Mesh technology to establish a NAN neighborhood network, can support end-to-end IPv6 communication, and CG-Mesh supports wireless frequency hopping, automatic network discovery, link layer access control, automatic network layer configuration, routing and forwarding of IPv6, firmware centralized upgrading and PON outage notification.
The intelligent power terminal uses a CG-Mesh technology to establish a NAN neighborhood network, can support end-to-end IPv6 communication, and CG-Mesh supports wireless frequency hopping, automatic network discovery, link layer access control, automatic network layer configuration, routing and forwarding of IPv6, firmware centralized upgrading and PON outage notification.
The wide area network communication unit 7 comprises a point-to-multipoint traffic transmission subunit, a multipoint-to-multipoint traffic transmission subunit and a point-to-point traffic transmission subunit.
The wide area network is a backhaul network connecting the FAN to the NOC through the field area network FAR, and may use optical fibers, ethernet private networks (multiple spanning tree protocol MSTP, multi-protocol label switching private MPLS VPN, passive optical access system GPON, or optical network terminal ONT), worldwide interoperability for microwave access WiMAX, 3G/4G, various types of digital subscriber lines xDSL, etc., and authentication and encryption are required for security.
The wide area network needs to support the following traffic models:
point-to-multipoint: the traffic from the NOC to the power distribution network equipment supports unicast and multicast of IPv4/IPv6 and SCADA protocol through protocol conversion;
multipoint to multipoint: traffic from the distribution network to the NOC;
point-to-point: traffic between substations, other than IPv4/IPv6, may need to support two-tier IEC 61580 GOOSE/SV. Traffic between distribution feeder devices, such as communications between automatic closing switch controllers, uses WiMAX CPE to WiMAX base stations of the substation.
The network operation center processing unit 8 comprises an interconnected power grid network management subunit, a network operation center application program management subunit and a network operation center network service subunit.
The NOC network operation center consists of three sub-units, corresponding to the three sub-units of the network operation center processing unit 8: the system comprises an internet network management system (CG-NMS), a NOC application server and a NOC network service.
CG-NMS
The internet grid network management system (CG-NMS) is a software platform that manages the field area network FAN network and the security infrastructure. The system comprises a front-end user interface and a back-end database. CG-NMS user interface and front-end application software: configuration, monitoring, event management, firmware and configuration push of CGR and CGE, browser-based client. The user interface runs on Red Hat Linux and is a key component for realizing Zero Touch configuration (ZTD). The CG-NMS database is an Oracle database that stores all operational status, device configuration, network event alarms, performance indicators. In order to support millions of intelligent grid terminals, a set of CG-NMS is recommended to be configured for every 50 million CGEs, and at most 5 million CGE terminals can be supported by 10 CG-NMSs without considering redundancy.
NOC application server
In a multi-service FAN deployment scenario, a NOC application and related servers execute Distribution Automation (DA), remote asset management, remote workflow management and the like, and provide a distribution automation collection engine for interface instrument data management, billing, power outage management and load control between distribution automation systems.
NOC network service
The head-end router HER is used to aggregate wide area network connections from the field area network router FAR, the HER is the terminator of VPN tunnels from the FAR, supporting unicast and multicast, IPSec and GRE tunnel termination for IPv4/IPv 6.
The distribution terminal communication submodule 5 further comprises a node message control unit, and the node message control unit comprises a DIO information control unit, a DIS information control unit and a DAO information control unit. The wireless nodes after power-on establish a network by 3 kinds of RPL messages of DIO/DIS/DAO among each other. Firstly, the establishment of the topology and the establishment of the upward route, and secondly, the establishment of the downward route.
The RPL message is a new type of ICMPV6 control message, and is structured as shown in the following table:
table 1 RPL message structure one
| Octets：1 | 1 | 2 | variable |
| Type | Code | Checksum | Message body |
Table 2 RPL message structure two
| Bits：0-2 | 3 | 4-7 |
| RPL type | security | Reserved |
Table 3 RPL message structure three
| RPL Type | Description |
| 0x00 | DODAG Information Solicitation(DIS) |
| 0x01 | DODAG Information Object(DIO) |
| 0x02 | Destination Advertisement Object(DAO) |
| 0x03 | Reserved |
DIS, used to request a DIO from RPL node, and also used to explore neighbor nodes in the neighboring DODAG;
DIO used when a DODAG root creates a new DAG
DAO for propagating reverse routing information to record visited nodes on the upstream path
The distribution terminal communication submodule 5 further comprises a field area network safety protection unit and a field area network management unit. And the distribution terminal communication submodule 5 carries out the safety and network management of the field area network FAN through the field area network safety protection unit and the field area network management unit.
The field area network safety protection unit comprises a safety identification subunit, a wide area network safety subunit, a safety isolation subunit and a physical safety subunit.
For the security of the field area network FAN, a multi-layer defense architecture can be adopted: wherein the field area network security protection unit is used for security identification (certificate identification), wide area network security (Ipv4 and Ipv6 routing and traffic filtering), security isolation (VLAN, MPLS VPN, different tunnel access) and physical security (alarm is generated when CGR is touched).
The field network management unit comprises a network access control subunit, a user management subunit, a data security subunit and a key management subunit.
The field network management unit is used for network admission control, AAA (user authentication, authorization and record), data security and key management.
For networking of a large number of terminal devices in power distribution automation, network management is crucial. In order to adapt to the conditions that the processing capacity of an automatic networking terminal (CGE) is limited, and the transmission network is low in power consumption and lossy, the CGE uses a Push mode based on a CoAP, the SNMP of a field network router uses a Push mode, and the Netflow/IPfix uses the Push mode.
The present embodiment collects the state data of the distribution transformer tap through the data collection module 1, the intelligent terminal module 2 analyzes the received data through the distribution transformer terminal analysis submodule 4, the analysis result is transmitted to the remote receiving and processing module 3 through the distribution transformer terminal communication submodule 5 to be processed, the distribution transformer terminal communication submodule 5 carries out wireless communication through the neighborhood network communication unit 6, the wide area network communication unit 7 and the network operation center processing unit 8, so as to meet the networking requirements of high constraint and unstable environment.
The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (7)
1. The distribution transformer tap temperature control device based on IP wireless communication is characterized by comprising a data acquisition module (1), an intelligent terminal module (2) and a remote receiving and processing module (3), wherein the intelligent terminal module (2) comprises a distribution transformer terminal analysis submodule (4) and a distribution transformer terminal communication submodule (5), the distribution transformer terminal communication submodule (5) is respectively connected with the distribution transformer terminal analysis submodule (4) and the remote receiving and processing module (3), the data acquisition module (1) comprises a distribution transformer tap resistance value acquisition unit (9), a distribution transformer tap temperature acquisition unit (10) and an information transmission unit (11), the distribution transformer tap resistance value acquisition unit (9) and the distribution transformer tap temperature acquisition unit (10) are connected with the information transmission unit (11), and the information transmission unit (11) is connected with the distribution transformer terminal analysis submodule (4), the distribution transformer terminal communication submodule (5) comprises a neighborhood network communication unit (6), a wide area network communication unit (7) and a network operation center processing unit (8).
2. The distribution tap temperature control device based on IP wireless communication of claim 1, wherein the distribution terminal communication sub-module (5) further comprises a node message control unit, the node message control unit comprising a DIS information control unit, a DIO information control unit and a DAO information control unit.
3. The distribution tap temperature control device based on IP wireless communication of claim 1 or 2, wherein the wan communication unit (7) comprises a point-to-point traffic transmission subunit, a point-to-multipoint traffic transmission subunit and a multipoint-to-multipoint traffic transmission subunit.
4. The distribution tap temperature control device based on IP wireless communication of claim 1 or 2, wherein the network operation center processing unit (8) comprises a network operation center application program management subunit, a network operation center network service subunit and an inter-grid network management subunit.
5. The distribution transformer tap temperature control device based on the wireless IP communication of claim 1 or 2, wherein the distribution transformer terminal communication sub-module (5) further comprises a field area network management unit and a field area network security protection unit.
6. The distribution transformer tap temperature control device based on the IP wireless communication of claim 5, wherein the field network management unit comprises a network admission control subunit, a user management subunit, a key management subunit and a data security subunit.
7. The distribution transformer tap temperature control device based on IP wireless communication of claim 5, wherein the field area network security protection unit comprises a wide area network security subunit, a security identification subunit, a security isolation subunit and a physical security subunit.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114554307A (en) * | 2021-10-26 | 2022-05-27 | 国网浙江省电力有限公司湖州供电公司 | Distribution transformer tap temperature control device based on IP wireless communication |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114554307A (en) * | 2021-10-26 | 2022-05-27 | 国网浙江省电力有限公司湖州供电公司 | Distribution transformer tap temperature control device based on IP wireless communication |
| CN114554307B (en) * | 2021-10-26 | 2023-10-20 | 国网浙江省电力有限公司湖州供电公司 | Distribution transformer sub-joint temperature control device based on IP wireless communication |
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