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Information interaction method between devices orienting to communication-based regional protection

A technology for information exchange and regional protection, applied in emergency protection circuit devices, electrical components, etc., can solve the problems of transmission capacity limitation, inability to realize multi-device coordinated fault multi-discrimination and large-scale power grid regional protection, etc., to solve the problem of insufficient network capacity. Effect

Active Publication Date: 2016-02-17
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

Method used

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  • Information interaction method between devices orienting to communication-based regional protection
  • Information interaction method between devices orienting to communication-based regional 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 interchange of relay protection devices of a power system, in particular relates to an information interaction method between devices orienting to communication-based regional protection. Required information orienting to communication-based protection function is subjected to modeling and data processing, relay protection sampling value information in larger data transmission volume generates processed stateflow information, so as to reduce information interaction volume between the devices and meet the requirements of communication protection function on network performance; a regional sampling value information acquisition function and an in-region stateflow information interaction function between protection devices in a regional power network are formed by an information communication architecture of an establishment device and a communication architecture of a regional protection system. According to the invention, the contradiction between the information interaction of the relay protection devices and the network transmission performance can be effectively resolved, and a necessary communication function basis is provided for the implementation 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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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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