CN113163389B - Communication link establishment method and device for power load control service - Google Patents
Communication link establishment method and device for power load control service Download PDFInfo
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- CN113163389B CN113163389B CN202011348199.9A CN202011348199A CN113163389B CN 113163389 B CN113163389 B CN 113163389B CN 202011348199 A CN202011348199 A CN 202011348199A CN 113163389 B CN113163389 B CN 113163389B
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- 238000004891 communication Methods 0.000 title claims abstract description 104
- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000013642 negative control Substances 0.000 claims abstract description 118
- 238000012545 processing Methods 0.000 claims description 12
- 238000012544 monitoring process Methods 0.000 claims description 11
- 238000012423 maintenance Methods 0.000 claims description 10
- 230000008859 change Effects 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 7
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/24—Connectivity information management, e.g. connectivity discovery or connectivity update
- H04W40/248—Connectivity information update
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Databases & Information Systems (AREA)
- Telephonic Communication Services (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The invention relates to a communication link establishment method and a device for electric power negative control service, which are characterized in that a communication terminal is arranged between a negative control terminal and a public network accessed by a negative control substation, and the communication terminal is used for realizing the transmission and forwarding of uplink and downlink data, so that the communication link of the electric power negative control service is established, and routing information is timely cleaned and updated when the link fails, so that stable communication in a wireless communication environment is ensured.
Description
Technical Field
The invention relates to the technical field of extra-high voltage alternating current/direct current power grid system protection, in particular to a method and a device for establishing a communication link of an electric power negative control service.
Background
Under the accurate negative control business scene of electric power based on 5G communication, the substation system is required to interact with load control equipment on the side of the users 1, 2 … … N in real time through 5G communication, and then the switching of the equipment on the side of the users 1, 2 and 3 … … N is controlled according to a strategy. A schematic diagram of a communication link based on 5G communication is shown in fig. 1. The traditional mode is a private network communication mode, namely, the sub-station and the user N are deployed under the same core network, data are communicated and interacted through a core network route, and the communication between the user side negative control terminal and the sub-station is realized. The public network mode is based on 5G communication, transformation is difficult to be performed based on a simple private network mode, and the core network directly performs routing and has no popularization value.
The accurate load control system is an important component for protecting the extra-high voltage alternating current/direct current power grid system. When the extra-high voltage direct current fault occurs and the load of the receiving end power grid needs to be controlled in a large amount, the regulation and control center can regulate and control the load through the load management system, so that large social influence caused by a large amount of limited lines, substations and the like is avoided. The system protection accurate load control system architecture is shown in figure 2. Fig. 3 shows a wireless private network-based communication link deployment manner, in which a substation directly accesses a core network, a user side negative control terminal device accesses a base station through a wireless private network communication terminal (CPE), and then accesses the core network, and the link directly communicates through a core network route, and basically still belongs to a local area network.
Because the wireless communication mode has the risk of unstable link communication, if the communication of the negative control terminal is interrupted when the load of the negative control substation is regulated step by step, the regulation strategy can be influenced, and even the risks of regional protection failure and expansion of the fault range are brought. On the other hand, the network complexity of the wireless equipment access based on the public network is increased compared with that of the wireless private network, the link route information needs to be maintained, and when a new negative control terminal is accessed, the new negative control terminal needs to be updated to the control strategy of the negative control substation in time, and the link self-configuration and the route self-maintenance are needed.
Disclosure of Invention
Based on the above situation in the prior art, an object of the present invention is to provide a method and an apparatus for establishing a communication link based on a communication terminal, so as to solve the communication problem between such a service terminal and a master station deployed in a public network.
To achieve the above object, according to one aspect of the present invention, there is provided a communication link establishment method of a power negative control service, comprising the steps of:
the communication terminal receives the registration information of the accessed negative control terminal;
registering the negative control terminal according to the registration information and generating a communication data packet;
transmitting the communication data packet to a negative control substation connected to a public network;
and receiving the data replied by the negative control substation and forwarding the replied data to a negative control terminal.
Further, the registering the negative control terminal includes registering according to the negative control terminal identification information sent when the negative control terminal is accessed to the communication terminal.
Further, the generating the communication data packet includes the communication terminal generating the communication data packet including the communication terminal identifier, the load terminal identifier, and the service data according to the registration information.
Further, after the communication data packet is sent to the negative control sub-station, the negative control sub-station compares the information in the communication data packet with the information in the existing routing table so as to update the routing table information.
Further, the method further comprises the steps of maintaining and monitoring the link:
when detecting the address change of the negative control terminal, updating the link route information and reestablishing the link relation;
deleting the information in the routing table of the negative control substation when disconnection occurs;
when the link heartbeat data sent by the negative control substation is invalid, the corresponding routing table information is cleared.
According to another aspect of the present invention, there is provided a communication link establishment apparatus for a power negative control service, including a downstream data processing module, a routing module, and an upstream data processing module; wherein,
the downlink data processing module receives the registration information of the accessed negative control terminal and forwards the data replied by the negative control substation to the negative control terminal;
the routing module registers the negative control terminal according to the registration information and generates a communication data packet;
and the uplink data processing module is used for sending the communication data packet to a negative control substation connected to the public network and receiving the data replied by the negative control substation.
Further, the routing module registers the negative control terminal according to the negative control terminal identification information sent when the negative control terminal is accessed to the communication terminal.
Further, the routing module generates a communication data packet including a communication terminal identifier, a load terminal identifier, and service data according to the registration information.
Further, the system also comprises a link maintenance and monitoring module; the link maintenance and monitoring module is provided with a control module,
when detecting the address change of the negative control terminal, updating the link route information and reestablishing the link relation;
deleting the information in the routing table of the negative control substation when disconnection occurs;
when the link heartbeat data sent by the negative control substation is invalid, the corresponding routing table information is cleared.
In summary, the present invention provides a method and an apparatus for establishing a communication link of a power negative control service, where a communication terminal is disposed between a negative control terminal and a public network to which a negative control substation is connected, and the communication terminal is used to implement transmission and forwarding of uplink and downlink data, so as to establish a communication link of the power negative control service, and clear and update routing information in time when the link fails, so as to ensure stable communication in a wireless communication environment.
Drawings
FIG. 1 is a schematic diagram of a communication link based on 5G communication;
FIG. 2 is a diagram of a protection precision load control system architecture;
fig. 3 is a schematic diagram of a wireless private network-based communication link;
FIG. 4 is a flow chart of an implementation of the communication link establishment method of the power negative control service of the present invention;
fig. 5 is a schematic diagram of the structure of the communication link establishment device of the power negative control service in the communication link according to the present invention;
fig. 6 is a block diagram showing the constitution of a communication link establishment apparatus for the power negative control service of the present invention.
Detailed Description
The objects, technical solutions and advantages of the present invention will become more apparent by the following detailed description of the present invention with reference to the accompanying drawings. It should be understood that the description is only illustrative and is not intended to limit the scope of the invention. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the present invention.
The technical scheme of the invention is described in detail below with reference to the accompanying drawings. According to one embodiment of the invention, a communication link establishment method of power negative control service is provided, the method is suitable for establishing a communication link of power accurate negative control service of a public network, a power special communication terminal contacts a negative control terminal and a negative control substation, and a routing relationship between the negative control substation and the negative control terminal is established. The implementation flow chart of the method is shown in fig. 4, and comprises the following steps:
1) The accurate negative control substation accesses a public network (ethernet) via a fixed IP, and the accurate negative control substation may include a route management module.
2) The negative control terminal is connected to the special communication terminal for electric power, sends the identification information of the negative control terminal, and registers in the communication terminal routing module.
3) The power special communication terminal link routing module sends a communication data packet containing a communication terminal identifier, a negative control terminal identifier and service data to the accurate negative control substation fixed IP.
4) And the routing management module of the accurate negative control substation receives the communication data packet, compares the communication terminal identification and the negative control terminal identification information with the existing routing table information and updates the routing table information according to the communication terminal identification and the negative control terminal identification information.
5) The accurate negative control substation replies the communication terminal data according to the routing table information of the routing management module, and the communication terminal routing module receives the information and forwards the data to the negative control terminal.
6) And carrying out a link maintenance and monitoring step: when detecting the address change of the negative control terminal, updating the link route information and reestablishing the link relation; deleting the information in the routing table of the negative control substation when disconnection occurs; when the link heartbeat data sent by the negative control substation is invalid, the corresponding routing table information is cleared.
The special power communication terminal has a self-registration function, and comprises the following steps:
1) The communication terminal presets IP address information of the negative control substation, and after network residence, the communication terminal sends registration information with a communication terminal identifier and a negative control terminal identifier to the negative control substation;
2) After the negative control substation receives the communication terminal information, the communication terminal identification and the negative control terminal identification are analyzed and compared with the communication terminal identification and the negative control terminal identification in the routing table of the routing module of the negative control substation, and the routing table information is updated.
The negative control substation has the functions of link maintenance and monitoring, and the process is as follows:
1) The negative control sub-station periodically sends link heartbeat data to the communication terminal according to the communication terminal identification in the routing table of the routing module;
2) And if the link heartbeat data fails, cleaning the corresponding routing table information.
According to another embodiment of the present invention, there is provided a communication link establishment apparatus for a power negative control service, the apparatus having a structure schematically shown in fig. 5 and a block diagram schematically shown in fig. 6, including: a downlink data processing module, a routing module and an uplink data processing module.
The downlink data processing module receives the accessed registration information of the negative control terminal and forwards the data replied by the negative control substation to the negative control terminal.
And the routing module registers the negative control terminal according to the registration information and generates a communication data packet. In general, the routing module may include a storage unit that may store and update routing information.
The uplink data processing module sends the communication data packet to the negative control substation and receives the data replied by the negative control substation.
The device can also comprise a link maintenance and monitoring module, wherein the link maintenance and monitoring module is used for realizing the maintenance and monitoring of the communication link, and updating the link route information and re-establishing the link relation when the address change of the negative control terminal is detected; deleting the information in the routing table of the negative control substation when disconnection occurs; when the link heartbeat data sent by the negative control substation is invalid, the corresponding routing table information is cleared.
In summary, the present invention relates to a method and an apparatus for establishing a communication link of a power negative control service, which are used for solving the problem that a negative control substation cannot effectively interact with an actual controllable negative control terminal when performing a control policy in a wireless communication environment. When the communication terminal is offline, the corresponding information of the negative control terminal is deleted in time, so that stable communication in the wireless communication environment is ensured.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explanation of the principles of the present invention and are in no way limiting of the invention. Accordingly, any modification, equivalent replacement, improvement, etc. made without departing from the spirit and scope of the present invention should be included in the scope of the present invention. Furthermore, the appended claims are intended to cover all such changes and modifications that fall within the scope and boundary of the appended claims, or equivalents of such scope and boundary.
Claims (6)
1. The communication link establishment method of the power load control service is characterized by comprising the following steps:
the communication terminal receives the registration information of the accessed negative control terminal;
registering the negative control terminal according to the registration information and generating a communication data packet;
transmitting the communication data packet to a negative control substation connected to a public network;
receiving the data replied by the negative control substation, and forwarding the replied data to a negative control terminal;
after the communication data packet is sent to the negative control sub-station, the negative control sub-station compares the information in the communication data packet with the information in the existing routing table so as to update the routing table information;
the method also comprises the steps of maintaining and monitoring the link:
when detecting the address change of the negative control terminal, updating the link route information and reestablishing the link relation;
deleting the information in the routing table of the negative control substation when disconnection occurs;
when the link heartbeat data sent by the negative control substation is invalid, the corresponding routing table information is cleared.
2. The method of claim 1, wherein registering the negative control terminal comprises registering based on negative control terminal identification information sent when the negative control terminal accesses the communication terminal.
3. The method of claim 2, wherein the generating a communication data packet comprises the communication terminal generating a communication data packet including a communication terminal identification, a load terminal identification, and traffic data based on the registration information.
4. The communication link establishment device of the power negative control service is characterized by comprising a downlink data processing module, a routing module and an uplink data processing module; wherein,
the downlink data processing module receives the registration information of the accessed negative control terminal and forwards the data replied by the negative control substation to the negative control terminal;
the routing module registers the negative control terminal according to the registration information and generates a communication data packet;
the uplink data processing module is used for sending the communication data packet to a negative control substation connected to the public network and receiving data replied by the negative control substation;
after the communication data packet is sent to the negative control sub-station, the negative control sub-station compares the information in the communication data packet with the information in the existing routing table so as to update the routing table information;
the system also comprises a link maintenance and monitoring module; the link maintenance and monitoring module is provided with a control module,
when detecting the address change of the negative control terminal, updating the link route information and reestablishing the link relation;
deleting the information in the routing table of the negative control substation when disconnection occurs;
when the link heartbeat data sent by the negative control substation is invalid, the corresponding routing table information is cleared.
5. The apparatus of claim 4, wherein the routing module registers the negative control terminal based on negative control terminal identification information sent when the negative control terminal accesses the communication terminal.
6. The apparatus of claim 5, wherein the routing module generates a communication data packet including a communication terminal identification, a load terminal identification, and traffic data based on the registration information.
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| CN202011348199.9A CN113163389B (en) | 2020-11-26 | 2020-11-26 | Communication link establishment method and device for power load control service |
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| CN113163389B true CN113163389B (en) | 2024-03-01 |
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