CN110854798A - Differential relay protection communication device, system and method based on 5G communication - Google Patents
Differential relay protection communication device, system and method based on 5G communication Download PDFInfo
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- CN110854798A CN110854798A CN201911056622.5A CN201911056622A CN110854798A CN 110854798 A CN110854798 A CN 110854798A CN 201911056622 A CN201911056622 A CN 201911056622A CN 110854798 A CN110854798 A CN 110854798A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0061—Details of emergency protective circuit arrangements concerning transmission of signals
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/04—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for transformers
- H02H7/045—Differential protection of transformers
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/22—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/261—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/20—Systems supporting electrical power generation, transmission or distribution using protection elements, arrangements or systems
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
- Y04S20/242—Home appliances
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention provides a differential relay protection communication device, a differential relay protection communication system and a differential relay protection communication method based on 5G communication, wherein the differential relay protection communication device comprises an electrical information acquisition module, a 5G communication module and a trip logic processing module, wherein the electrical information acquisition module is used for acquiring the operation information of electrical equipment in real time; the 5G communication module is used for receiving the electric equipment operation information acquired by the electric information acquisition module and realizing the operation information intercommunication among different electric equipment; the trip logic processing module is used for receiving the electrical equipment operation information transmitted by the 5G communication module, judging the operation state of the power grid and making a normal operation or switch trip command; the communication device, the system and the method do not need conventional transmission media, greatly reduce the cost of the device, and greatly improve the transmission rate, thereby realizing real multi-node cooperative transmission and fault judgment and improving the reliability and stability of communication.
Description
Technical Field
The disclosure relates to the technical field of relay protection, and in particular to a differential relay protection communication device, system and method based on 5G communication.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
At present, relay protection or safety automatic devices in power relay protection devices often use data transmission technology between two related devices or multiple related device points, and currently, remote relay protection between the related devices generally uses means such as carrier communication and optical fiber communication.
The inventors of the present disclosure consider that the problems to be solved at present are as follows: (1) the transmission is carried out through conventional physical media, such as power wires or optical fibers, so that the equipment cost is high; (2) the failure rate of the device is high, the reliability of the device is directly influenced by the integrity of the channel of the propagation medium, and the channel device loses effect due to any failure point of the signal sending device and the transmission channel; (3) the cost of the device is high, and the value is high due to the cost of the signal sending device and the transmission medium; (4) the reliability of the device is greatly reduced along with the increase of the number of all relevant nodes and the distance between the nodes, the current electric power differential protection is mainly used for two-node lines, is applied to three-node lines in a small amount, and has limitation on multi-node and long-distance transmission lines; (5) the transmission rate is low, and the capability of multi-node cooperative transmission is poor.
Disclosure of Invention
In order to solve the defects of the prior art, the differential relay protection communication device, system and method based on 5G communication are provided, conventional transmission media are not needed, the cost of the device is greatly reduced, and the transmission rate is greatly improved, so that real multi-node cooperative transmission and power grid fault judgment are realized, and the reliability and stability of power communication are improved.
In order to achieve the purpose, the following technical scheme is adopted in the disclosure:
in a first aspect, the present disclosure provides a differential relay protection communication device based on 5G communication;
a differential relay protection communication device based on 5G communication comprises an electrical information acquisition module, a 5G communication module and a trip logic processing module, wherein the electrical information acquisition module is used for acquiring the operation information of electrical equipment in real time;
the 5G communication module is used for receiving the electric equipment operation information acquired by the electric information acquisition module and realizing the operation information intercommunication among different electric equipment;
and the trip logic processing module is used for receiving the electrical equipment operation information transmitted by the 5G communication module, judging the operation state of the power grid and making a normal operation or switch trip command.
As some possible implementations, the operational information of the electrical device includes switch position, voltage, current, and power.
As some possible implementation manners, the 5G communication module includes an identity module, and the identity module is used for implementing communication identification between different electrical devices.
In a second aspect, the present disclosure provides a differential relay protection communication system based on 5G communication;
a differential relay protection communication system based on 5G communication comprises the differential relay protection communication device based on 5G communication, and each differential protection node is provided with at least one communication device.
As some possible implementation manners, a plurality of associated groups of electrical devices are included, each associated group includes at least two electrical devices, and the electrical devices of the same associated group communicate with each other through the communication device.
As some possible implementations, the communication shielding is performed on the electrical devices outside the electrical device association group, each electrical device is disposed in at least one electrical device association group, and the communication shielding is performed between different electrical device association groups.
As some possible implementations, the electrical device operation information within the same association is visible in real time.
In a third aspect, the present disclosure provides a differential relay protection communication system based on 5G communication;
the utility model provides a differential relay protection communication system based on 5G communication, includes this disclosure differential relay protection communication device based on 5G communication, the device is used for electric secondary equipment communication, electric secondary equipment communication includes main transformer differential protection, generating line differential protection, circuit differential protection, is equipped with automatic switching device, low frequency load shedding, high frequency cutter, automatic power generation control and automatic voltage reactive control.
As some possible implementations, the communication device is used for information communication in data telemetry, and telemetry of Energy Management Systems (EMS).
In a fourth aspect, the present disclosure provides a differential relay protection communication method based on 5G communication;
a differential relay protection communication method based on 5G communication comprises the following steps:
(1) setting a differential relay protection communication device on each differential protection node, setting a unique identification code for each electrical device, and collecting the operation information of each electrical device in real time;
(2) establishing an electrical equipment association group, associating electrical equipment with high association degree into one group, and enabling the electrical equipment in the same association group to communicate with each other through the communication device;
(3) and the communication device on each electrical device judges the operation state of the power grid according to the received electrical device operation information in the association group where the corresponding electrical device is positioned, and makes a normal operation or switch trip command.
As some possible implementation manners, in the step (2), the electrical devices in the electrical device association group perform information intercommunication according to the unique identification codes of the respective electrical devices, and perform communication shielding on the electrical devices outside the electrical device association group.
As some possible implementations, the step (2) includes a plurality of electrical device association groups, each electrical device is disposed in at least one electrical device association group, and communication shielding is performed between different electrical device association groups.
As some possible implementation manners, in the step (3), the communication device on each differential protection node judges the operation state of the power grid according to the received operation information of the electrical equipment in the associated group, and sends out alarm information to the upper computer and a switch trip command when the power grid is abnormally operated.
Compared with the prior art, the beneficial effect of this disclosure is:
1. the communication device, the system and the method do not need conventional transmission media, carry out information transceiving based on the 5G communication technology, and can pass through the common satellite communication technology without conventional transmission media, such as power wires, special optical fibers and the like.
2. The device disclosed by the disclosure has the advantages that the cost is greatly reduced, and only an information sending device is needed because a special transmission medium is not needed, so that the resource consumption caused by laying a communication medium is reduced.
3. The device has high reliability, and because the device transmits and receives information based on the 5G communication technology, the stability of the information channel is high, and the device is not easily influenced by the reasons of severe weather, external force damage, equipment aging and the like which are easily received by conventional media.
4. The device is easy to adjust and good in performance, the protection range of relay protection can be changed simply and conveniently by setting the association relation of electrical equipment, a plurality of related groups can be added into one set of device, the same switch device can be used as a tripping switch of line differential protection and a tripping switch of bus differential protection, and the two tripping switches are not influenced by each other.
5. The unique identification codes are arranged on the electrical equipment, the association groups can be established through a certain matching relation, the visibility of information receiving and sending can be realized among the associated equipment in real time, and the corresponding operation information can be reliably shielded compared with the electrical equipment which does not belong to the same association group; each electrical device is arranged in at least one electrical device association group, communication shielding is carried out between different electrical device association groups, and the operation information of the electrical devices in the same association group is visible in real time, so that the confidentiality of information receiving and transmitting is realized, and the stability of data transmission in communication is greatly improved.
6. The device can receive and transmit the operation information of each electrical device simultaneously, and meets the real-time property of the information, so that the timely and effective work of power relay protection is realized, and the protection capability of the electrical devices is greatly improved.
7. The device adopt 5G communication transceiver module, the effectual high transmission rate who combines 5G technique and the characteristics of low time delay for electrical equipment's information acquisition's real-time is stronger, thereby has really realized relay protection's timely effective action, very big improvement electrical equipment's when the electric wire netting trouble protection effect.
8. The device disclosed by the disclosure adopts the 5G communication transceiving module, realizes the communication of multiple nodes and long-distance transmission lines while realizing high-rate data transmission, and solves the problem of poor timeliness of the existing multiple nodes and long-distance transmission.
9. The device disclosed by the invention can be used for real-time communication of electrical secondary equipment such as main transformer differential protection, bus differential protection, line differential protection, spare power automatic switching devices, low-frequency load shedding, high-frequency generator tripping, automatic power generation control and automatic voltage reactive power control, and can also be used for information communication in data remote measurement, remote signaling and remote control of an Energy Management System (EMS), and the device has the advantages of wide application range and strong practicability.
Drawings
Fig. 1 is a schematic diagram of a differential relay protection communication device based on 5G communication according to embodiment 1 of the present disclosure.
Fig. 2 is a schematic diagram of a differential relay protection communication system based on 5G communication according to embodiment 2 of the present disclosure.
Fig. 3 is a schematic diagram of a differential relay protection communication device based on 5G communication according to embodiment 3 of the present disclosure.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
Example 1:
as shown in fig. 1, the present disclosure provides a differential relay protection communication device based on 5G communication, including an electrical information acquisition module, a 5G communication transceiver module and a relay protection trip logic processing module, where the electrical information acquisition module is used to acquire operation information of an electrical device in real time, and the operation information of the electrical device includes a switch position, a voltage, a current and a power, and is used as a message that the communication devices transmit and receive each other in real time, and also provides a judgment basis for the relay protection trip logic processor.
The 5G communication transceiving module is used for receiving the electrical equipment operation information acquired by the electrical information acquisition module, realizing the operation information intercommunication among different electrical equipment, realizing wide connection, low delay, low energy consumption, large bandwidth, accurately and timely transceiving the data information of each relevant node and ensuring accurate and error-free mutual transmission of the information among the nodes;
the relay protection tripping logic processing module is used for receiving the electrical equipment operation information transmitted by the 5G communication transceiving module, judging the operation state of a power grid and making a normal operation or switch tripping command, and is connected with the switch on the differential protection node and makes a disconnection action when receiving the switch tripping command.
The 5G communication transceiving module comprises an identity identification module, each electrical device is provided with a unique ID identification code, and the identity identification module is used for carrying out device identification according to the identification codes of the electrical devices and realizing communication identification among different electrical devices so as to realize selective communication among the electrical devices.
Example 2:
as shown in fig. 2, embodiment 2 of the present disclosure provides a differential relay protection communication system based on 5G communication;
the differential relay protection communication device based on 5G communication comprises a plurality of electrical equipment association groups, wherein each electrical equipment association group at least comprises two electrical equipment, and the electrical equipment in the same association group are communicated with each other through the communication device.
The method comprises the steps of conducting communication shielding on electrical equipment outside an electrical equipment association set, enabling each electrical equipment to be arranged in at least one electrical equipment association set, conducting communication shielding among different electrical equipment association sets, and enabling operation information of the electrical equipment in the same association set to be visible in real time.
The device can also be used for electrical secondary equipment communication, and the electrical secondary equipment communication comprises main transformer differential protection, bus differential protection, line differential protection, spare power automatic switching device, low-frequency load shedding, high-frequency power cutting machine, automatic power generation control and automatic voltage reactive power control.
The communication device may also be used for information communication in data telemetry, and remote control of Energy Management Systems (EMS).
Example 3:
as shown in fig. 3, embodiment 3 of the present disclosure provides a differential relay protection communication method based on 5G communication, including the following steps:
(1) the differential relay protection communication device in embodiment 1 of the present disclosure is arranged on each differential protection node, and a unique identification code is set for each electrical device, so as to collect the operation information of each electrical device in real time;
(2) establishing an electrical equipment association group, associating electrical equipment with high association degree into one group, and enabling the electrical equipment in the same association group to communicate with each other through the communication device;
(3) and the communication device on each electrical device judges the operation state of the power grid according to the received operation information of the electrical devices in the associated group, and makes a normal operation or switch trip command.
In the step (2), the electrical devices in the electrical device association group perform information intercommunication according to the unique identification codes of the electrical devices, and perform communication shielding on the electrical devices outside the electrical device association group.
And (2) the step of communication shielding comprises a plurality of electrical equipment association groups, each electrical equipment is arranged in at least one electrical equipment association group, and communication shielding is carried out between different electrical equipment association groups.
And (3) judging the operation state of the power grid by the communication device on each differential protection node according to the received operation information of the electrical equipment in the associated group, sending alarm information to an upper computer when the power grid is abnormally operated, and sending a switch tripping command.
The above description is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure, and various modifications and changes may be made to the present disclosure by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present disclosure should be included in the protection scope of the present disclosure.
Claims (10)
1. A differential relay protection communication device based on 5G communication is characterized by comprising an electrical information acquisition module, a 5G communication module and a trip logic processing module, wherein the electrical information acquisition module is used for acquiring the operation information of electrical equipment in real time;
the 5G communication module is used for receiving the electrical equipment operation information acquired by the electrical information acquisition module and realizing the operation information intercommunication among different electrical equipment;
and the trip logic processing module is used for receiving the electrical equipment operation information transmitted by the 5G communication module, judging the operation state of the power grid and making a normal operation or switch trip command.
2. The differential relay protection communication device based on 5G communication according to claim 1, wherein the operation information of the electric equipment comprises switch position, voltage, current and power.
3. The differential relay protection communication device based on 5G communication of claim 1, wherein the 5G communication module comprises an identity module, and the identity module is used for realizing communication identification between different electrical devices.
4. A differential relay protection communication system based on 5G communication, characterized by comprising the differential relay protection communication device based on 5G communication of any one of claims 1-3, wherein each differential protection node is provided with at least one communication device.
5. The differential relay protection communication system based on 5G communication according to claim 4, comprising at least one electrical equipment association group, wherein each association group comprises at least two electrical equipments, the electrical equipments in the same association group communicate with each other through the communication device, each electrical equipment is arranged in at least one electrical equipment association group, communication shielding is performed between different electrical equipment association groups, and the operation information of the electrical equipments in the same association group is visible in real time.
6. A differential relay protection communication system based on 5G communication, comprising the differential relay protection communication device based on 5G communication according to any one of claims 1 to 3, wherein the device is used for electrical secondary equipment communication, and the electrical secondary equipment communication comprises main transformer differential protection, bus differential protection, line differential protection, spare power automatic switching device, low frequency load shedding, high frequency generator tripping, automatic power generation control and automatic voltage reactive power control;
the device is used for data telemetry, remote signaling and data communication in remote control of the energy management system.
7. A differential relay protection communication method based on 5G communication is characterized by comprising the following steps:
(1) setting a differential relay protection communication device on each differential protection node, setting a unique identification code for each electrical device, and collecting the operation information of each electrical device in real time;
(2) establishing an electrical equipment association group, associating electrical equipment with high association degree into one group, and enabling the electrical equipment in the same association group to communicate with each other through the communication device;
(3) and the communication device on each electrical device judges the operation state of the power grid according to the received electrical device operation information in the association group where the corresponding electrical device is positioned, and makes a normal operation or switch trip command.
8. The differential relay protection communication method based on 5G communication according to claim 7, wherein in the step (2), the electrical devices in the electrical device association group perform information intercommunication according to the unique identification codes of the respective electrical devices, and perform communication shielding on the electrical devices outside the electrical device association group.
9. The differential relay protection communication method based on 5G communication according to claim 7, wherein the step (2) includes a plurality of electrical device association sets, each electrical device is disposed in at least one electrical device association set, communication shielding is performed between different electrical device association sets, and operation information of electrical devices in the same association set is visible in real time.
10. The differential relay protection communication method based on 5G communication according to claim 9, wherein in step (3), the communication device on each differential protection node judges the operation state of the power grid according to the received operation information of the electrical equipment in the association group, and sends out an alarm message to the upper computer and a switch trip command when the power grid is abnormally operated.
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| CN201911056622.5A CN110854798A (en) | 2019-10-31 | 2019-10-31 | Differential relay protection communication device, system and method based on 5G communication |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111478297A (en) * | 2020-04-30 | 2020-07-31 | 深圳供电局有限公司 | Calculation method for power grid differential protection |
| CN111787512A (en) * | 2020-07-30 | 2020-10-16 | 许继集团有限公司 | Relay protection communication system and communication method based on 5G communication |
| CN111934433A (en) * | 2020-08-28 | 2020-11-13 | 中域高科（武汉）信息技术有限公司 | Automatic rechecking method, device, equipment and system for transformer substation monitoring background |
| CN112564054A (en) * | 2020-11-18 | 2021-03-26 | 深圳供电局有限公司 | Transformer substation differential protection intelligent system based on 5G application |
| WO2022062052A1 (en) * | 2020-09-22 | 2022-03-31 | 国电南瑞科技股份有限公司 | 5g-based method, module and terminal for realizing low scheduling latency and high speed access, and secondary electrical device |
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