Arc light monitoring intelligent component system and monitoring method for medium-low voltage switch of intelligent substation

Abstract

The invention discloses an arc light monitoring intelligent component system and monitoring method for a medium-low voltage switch of an intelligent substation. The intelligent component system comprises an arc light sensor, a sensor IED (Intelligent Electronic Device), a merging unit, an intelligent terminal and a main IED; the sensor IED samples the interval arc light signal of each medium-low voltage switch, and transmits the sample data to the main IED in a standard FT3 data format; the merging unit transmits an incoming current digital sample signal of a medium-low voltage system in an SV network to the main IED; the intelligent terminal executes a GOOSE trip command from the main IED to trip off an incoming switch of the medium-low voltage system; and the main IED is used for performing analysis, processing and logical operation on the sample data of the arc light and incoming current to realize arc light monitoring, protection and control on the medium-low voltage switch equipment. Through the system and monitoring method thereof disclosed by the invention, each component has clear division of work, strong functional extensibility and standard interfaces, and can be conveniently and flexibly applied to the intelligent substation.

Description

technical field [0001] The invention relates to an intelligent component system for arc light monitoring of medium and low voltage switchgear in an intelligent substation, and belongs to the technical field of on-line monitoring of electric power equipment. Background technique [0002] With the rapid development of smart grid construction, the intelligent demand for medium and low voltage switchgear is becoming more and more abundant. Through the research and development and application of intelligent technology, the safe operation of medium and low voltage switchgear can be effectively guaranteed to improve the operation efficiency of the power grid. The development of sensors and information technology provides a variety of technical means for the intelligentization of medium and low voltage switchgear. At present, the installation of sensor arrays in medium and low voltage switchgear basically realizes the online status monitoring of switchgear, but only the online sta...

AI Technical Summary

Problems solved by technology

[0004] There are the following problems in the arc light monitoring and protection technical solutions of the above documents: First, the current analog signal is connected to the current sampling unit by laying cables, which is not in line with the digital sampling of smart substations. Second, the tripping method does not meet the requirements of smart substation GOOSE network jump or GOOSE direct jump; third, the logic interface of each component of the system adopts a private communication protocol, and the interface compatibility is poor, which does not meet the requirements of smart substation smart equipment interoperability

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