Photoelectricity trigger device used for converting station transient state disturbance test and trigger method thereof

Abstract

The invention provides a photoelectricity trigger device used for a converting station transient state disturbance test. The photoelectricity trigger device used for the converting station transient state disturbance test comprises an electricity receiving module, a light receiving module, a comparator, an electricity-light conversion module, a light-electricity conversion module and an oscilloscope, wherein the electricity receiving module and a signal output end of the light receiving module are respectively connected with a signal input end of the comparator, an output end of the comparator is connected with the light-electricity conversion module through the electricity-light conversion module, and an output end of the light-electricity conversion module is connected with the oscilloscope. The photoelectricity trigger device used for the converting station transient state disturbance test mainly comprises the electricity receiving module, the light receiving module, the comparator, the electricity-light conversion module and the light-electricity conversion module. The photoelectricity trigger device used for the converting station transient state disturbance test is capable of quickly, accurately and effectively receiving space electromagnetic disturbance produced at the moment of the production of transient state disturbance and providing accurate trigger signals for the converting station transient state disturbance test. The photoelectricity trigger device used for the converting station transient state disturbance test utilizes optoelectronic isolation technology and can be placed near high-voltage equipment.

Description

technical field [0001] The invention relates to the technical field of electromagnetic compatibility in high-voltage power transmission and transformation projects, in particular to a photoelectric trigger device and a trigger method for substation transient disturbance testing. technical background [0002] The normal operation of secondary equipment such as control and protection in the substation in a complex electromagnetic environment is the basis for the safe operation of the substation and even the power grid. Compared with 500kV substations, the voltage level and operating current of 750kV substations and 1000kV substations have been greatly improved, and their electromagnetic disturbance problems are also more complicated. These high-voltage level, large-capacity substations have a huge impact on the safe operation of the entire power grid. In addition, my country is currently actively promoting the construction of smart grids. There is a big difference between the ...

AI Technical Summary

Problems solved by technology

Since the voltage and current are usually alternating current, direct triggering is feasible when the voltage and current signal grows from nothing, but when the voltage and current signal grows from nothing with little or no interference, direct triggering is often impossible, especially in smart substations The main signal is already an optical signal, and it is more difficult to trigger directly

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