Intelligent substation closed loop testing method and system

Abstract

An embodiment of the invention discloses an intelligent substation closed loop testing method and an intelligent substation closed loop testing system. The intelligent substation closed loop testing method comprises the steps of: acquiring a voltage signal on a substation circuit, a voltage signal time domain graph corresponding to the voltage signal, and a switching state of an intelligent circuit breaker in real time; judging whether a voltage value corresponding to the voltage signal exceeds a preset voltage threshold value and whether the switching state of the intelligent circuit breaker is in a switching-on state; sending a switching-off control signal to the intelligent circuit breaker when the voltage value exceeds the preset voltage threshold value and the switching state of the intelligent circuit breaker is in the switching-on state; acquiring the switching-off control signal and a switching-off control signal time domain graph corresponding to the switching-off control signal; and comparing the voltage signal time domain graph with the switching-off control signal time domain graph, and determining fault response time of the intelligent substation. According to the intelligent substation closed loop testing method disclosed by the invention, a fault signal and a response control signal are displayed in time domain graphs in real time, whether the intelligent substation can respond to faults is displayed, and the problem of fault response timeliness is solved.

Description

technical field [0001] The invention relates to the technical field of intelligent substations, in particular to a method and system for closed-loop testing of intelligent substations. Background technique [0002] A substation is a power facility in the power system that transforms voltage, receives and distributes electric energy, controls the flow of power, and adjusts voltage. It connects the power grids of all levels of voltage through transformers. Substation faults threaten the safety of people and equipment, so timely detection of substation faults and the timeliness of responding to faults play an important role in the safe operation of substations. [0003] In the prior art, the intelligent protection mechanism of the substation is measured by monitoring the state of the intelligent circuit breaker. The intelligent substation equipment status online monitoring system continuously and stably monitors the operating status of the circuit breaker online. Through the r...

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a smart substation closed-loop test method and system to solve the timeliness problem in the prior art that cannot reflect the response time of smart substations to faults

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