A method of information interaction between devices for communication-based area protection

A technology of information interaction and area protection, applied in the direction of emergency protection circuit devices, electrical components, etc., can solve the problems of transmission capacity limitation, inability to realize multi-device coordinated failure, multiple identification of large-scale power grid area protection, etc., to solve the problem of insufficient network capacity Effect

Active Publication Date: 2018-03-23
STATE GRID CORP OF CHINA +1
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Problems solved by technology

However, in the existing interactive mode of protection information, the information transmitted between devices is a sampling value with a large amount of data communication, and the processing of fault waveform filtering and other processing is completed after the device obtains the data. Functions that require remote interaction of a large amount of information, such as multi-discrimination of faults coordinated by devices and regional protection of large-scale power grids

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  • A method of information interaction between devices for communication-based area protection
  • A method of information interaction between devices for communication-based area protection

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Embodiment Construction

[0023] In order to meet the needs of state information acquisition in distributed multi-level protection fault multi-discrimination and area protection functions, the present invention proposes an information communication system between devices in a protection area. By constructing the corresponding device information interaction mode, information type and data generation method, and regional information interaction mode, the existing intra-station and inter-station communication network system in the power system is used to expand the communication architecture between protection devices to create a distributed multi-level area. Provide the required information exchange method for realizing the protection function.

[0024] The present invention provides an information interaction method between devices oriented to area protection based on communication. The information interaction method is based on the use of the intra-station and inter-station communication network in the ...

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Abstract

The invention belongs to the field of information exchange of relay protection devices in power systems, and in particular relates to an information interaction method between devices oriented to area protection based on communication. Through modeling and data processing for the information required by the communication-based protection function, the processed state flow information is generated from the relay protection sampling value information with a large amount of transmitted data, reducing the amount of information interaction between devices and meeting the requirements of the protection communication function. Network performance requirements; through the construction of the information communication architecture of the device and the communication architecture of the regional protection system, the regional sampling value information acquisition and intra-area status flow information interaction functions between protection devices in the regional power grid are formed. The invention effectively solves the contradiction between information interaction between relay protection devices and network transmission performance, and provides a necessary communication function basis for the realization of a communication-based relay protection system.

Description

technical field [0001] The invention belongs to the field of information exchange of relay protection devices in power systems, and in particular relates to an information interaction method between devices oriented to area protection based on communication. Background technique [0002] The existing relay protection system is based on the configuration of protection devices based on a single component in the system. The protection principle only uses the electrical quantity of a single component and the state of the related circuit breaker. The reliability and sensitivity to certain specific faults are not high, resulting in protection Misoperation or refusal to operate, or the protection action time and performance cannot fully meet the requirements for fault removal. On the other hand, due to the expansion of the scale of the power system, the problem of successive and correlated faults in the large power grid has gradually become prominent, and because the information in...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02H7/26
Inventor 李籽良于同伟郑志勤卢岩金世鑫蔡玉朋东方曲艺
Owner STATE GRID CORP OF CHINA
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