Intelligent substation relay protection noninvasive test system and method

Abstract

The invention relates to an intelligent substation relay protection noninvasive test system and an intelligent substation relay protection noninvasive test method, which belong to the technical field of electric systems. The intelligent substation relay protection noninvasive test system comprises a network communication module, an SCD analysis module, a test control module, a test excitation module and a test evaluation module, wherein the SCD analysis module, the test control module, the test excitation module and the test evaluation module are respectively connected with the network communication module; the SCD analysis module is respectively connected with the network communication module, the test evaluation module and an HMI for transmitting an SCD file; the network communication module is respectively connected with an MMS network and a GOOSE network for transmitting the SCD file, a test instruction and a test case; the test control module is respectively connected with the HMI, the test excitation module and the network communication module for transmitting the test instruction, and the test control module is connected with the test evaluation module for transmitting a test requirement; the test excitation module is used for receiving the test instruction and outputting the test case to the network Through the system and the method, tests on an SV chain circuit between a merging unit and a protection device as well as a GOOSE chain circuit between the protection device and an intelligent terminal can be implemented, and the test efficiency of an intelligent substation is improved.

Description

technical field [0001] The present invention relates to a device and method in the technical field of electric power system, in particular to a non-intrusive testing system and method for relay protection of intelligent substation based on SCD. Describes each isolated IED (Intelligent Electronic Device) in a digital substation, and the logical connection between each IED, and fully describes how each isolated IED is integrated into a substation automation system with complete functions. Background technique [0002] In a substation using IEC61850 standard communication, the messages exchanged between smart devices usually include GOOSE messages, SV messages and MMS messages. With the development of smart grid technology, intelligent substation technology, which is an important support for smart grid construction, has developed rapidly. The secondary system of the smart substation has added merging units, intelligent terminals, and process layer switches. The entire secondary...

AI Technical Summary

Problems solved by technology

However, this technology needs to apply the test stimulus through the SV network, which cannot meet the protection device test of the "point-to-point" connection mode (that is, the merging unit is directly connected to the protection device through an optical cable). At the same time, it cannot detect the SV link between the merging unit and the protection device. road connection

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