Digital relay protection device supporting three-in-one network

Abstract

The invention discloses a digital relay protection device supporting a three-in-one network. The digital relay protection device comprises a multichannel Ethernet interface module supporting a three-in-one network interface; an Ethernet frame pretreatment IP (intellectual property) core module supporting SV sampling value, GOOSE, a station control layer and PTP (picture transfer protocol) message; a self-adaptive multichannel sampling value data synchronism module; and a data receiving and processing module for completing protection, measurement and control, metering, and joint locking functions of the relay protection device, and realizing the protection and automation functions of a smart substation. The digital relay protection device can be applied to the smart substation, and realizes the transceiving treatment of in-station data based on sampling value grouping or three-in-one network joint transmission, and provides a solution for realizing the function of the relay protection device of the smart substation under a uniform network frame; besides, the digital relay protection device can simplify an interface of the relay protection device and reduce the data processing ability, and improve the running stability and reliability of the relay protection device.

Description

technical field [0001] The invention relates to a digital relay protection device supporting a three-in-one network, and belongs to the technical field of electric power system intelligent substations. Background technique [0002] According to the description and requirements of the IEC 61850 substation communication network and system standard, the equipment of the intelligent substation integrated automation system is arranged in three layers according to its functions: process layer, interval layer, and station control layer. In the long run, the substation network structure will be gradually improved in three stages, namely, point-to-point mode, process-level bus mode, and station-level bus, that is, "three networks in one" mode. [0003] In the smart substation network, relay protection equipment such as protection measurement and control devices need to realize synchronous collection and processing of the voltage and current of the inter-interval equipment connected t...

AI Technical Summary

Problems solved by technology

If the sampling value message is directly sent to the main CPU for processing without processing, then not only the transmission bandwidth of the main CPU is not enough, but also the data processing capability of the main CPU cannot meet the requirements of such a large flow of message processing, which will greatly affect the relay protection device performance and work stability

[0005] At the same time, the existing smart substation engineering application method that uses the station control layer network, sampling value network, and GOOSE network to network separa

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