Research On The Discharge Detection Of HV Switch Cabinet And Model Analysis

Nowadays,all aspects are very concerned about the quality of electric power system.On one hand,it requires less abnormal condition in electric power supply;on the other hand,there shall be no power supply accident.10 k V power system,the metal closed switch equipment is widely used,so the stability of the switchgear operation is the most important,the electrical equipment in the course of running due to high temperature,voltage,vibration and other chemical effects,will make it insulation performance is reduced,will produce partial discharge phenomenon,while accelerating the deterioration of insulation,power system will cause greater economic losses.Therefore,it is very important to analyze and discuss the cause of partial discharge of power system switchgear and its treatment method.However,the efficiency of the detection of the local discharge phenomenon of the switchgear is not very high,and it is necessary to improve the management method of the state data.The paper studies how does the partial discharge of switch cabinet of electric power system generate,analyzes the characteristics of four discharge types,meanwhile proposes the surface joint test method to test ground wave and ultrasonic wave and dissect the use method.It expounds the partical method through the presentation of the ability of TEV detection technology in power equipment maintenance performance.Then it analyzes the influence of the partial discharge waveform data and monitoring distance of simulative switchgear on electromagnetic wave transmission with the use of finite-difference time-domain method and selects the detection method through screening,comparison and optimization.It is hoped that it can be used as a reference for practical application and test.