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

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...

AI Technical Summary

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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