Method for improving 5G differential protection economy based on disturbance identification
A differential protection and economical technology, applied in the direction of emergency protection circuit devices, electrical components, etc., can solve the problems of large amount of channel transmission data, reduce the economy of 5G differential applications, and high monthly average data flow of 5G, so as to achieve adaptability widening, improving selective recognition ability, and reducing the effect of monthly average traffic
Pending Publication Date: 2022-04-26
BEIJING SIFANG JIBAO ENG TECH +1
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However, the current differential protection channel transmits a large amount of data. After using 5G communication, the average monthly data flow of 5G will be high, which reduces the economy of 5G differential applications and becomes a limitation that restricts the application of 5G differential protection in distribution networks. one of the factors
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[0081] The application will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solutions of the present invention more clearly, but not to limit the protection scope of the present application.
[0082] A method of improving the economy of 5G differential protection based on disturbance identification of the present invention, specifically:
[0083] The 5G differential protection of the distribution network line, in the normal state, sends normal messages to other sides every T1 for the differential protection on this side;
[0084] When disturbances, abnormalities or failures occur, the slave side continuously sends full data packets to the master side;
[0085] The T1 is the first period.
[0086] Information transmission mechanism of the present invention sees figure 1 , see the flowchart figure 2 , channel optimization can be realized, and the schematic diagram of the differential ...
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The invention discloses a method for improving the economy of 5G differential protection based on disturbance identification, and the method comprises the steps: in the 5G differential protection of a distribution network line, in a normal state, sending a normal message to other sides through the differential protection of the local side every T1; when disturbance occurs, the slave side continuously sends full data messages to the host side; according to the method, the situation that the power distribution network has a certain probability of disturbance and fault occurrence during normal operation and sends the synchronous state and the state quantity related to differential motion at regular time in a normal state is considered, and the full-data message is continuously sent only when disturbance, abnormity or fault occurs, so that the monthly average flow of 5G differential motion is reduced to the maximum extent, the monthly average flow of 5G differential motion can be effectively reduced, and the service life of the power distribution network is prolonged. A large amount of popularization and application of 5G differential motion in the power distribution network are promoted, the selective fault recognition capability of the power distribution network is improved, and therefore the problems that the power distribution network multi-end power line fault cannot be accurately recognized and the current power distribution network line relay protection selectivity is not high are solved.
Description
technical field [0001] The invention belongs to the technical field of relay protection for distribution network lines, and relates to a method for improving the economy of 5G differential protection based on disturbance identification. Background technique [0002] In recent years, with the improvement of reliability requirements for distribution network power supply and the massive access of distributed power sources, the traditional three-stage overcurrent protection can no longer meet the needs of distribution network line relay protection. [0003] With its simple principle, good selectivity and quick action, current differential protection is widely used in transmission lines as the main protection. Applying current differential protection to distribution network lines can well solve the problem that the current distribution network line relay protection is not high in selectivity and the faults of multi-terminal power supply lines cannot be accurately identified. [...
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IPC IPC(8): H02H7/26
CPCH02H7/262
Inventor 聂娟红黄继伟张月品李晓辉童俊苏黎明
Owner BEIJING SIFANG JIBAO ENG TECH
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