气体绝缘金属开关设备(GIS)扩建停电研究OA

Analyzing the causes of power outages during the expansion process of gas insulated metal switchgear(GIS)and proposing solutions to avoid power outages is of great guiding significance for the selection and planning design of GIS equipment.This article analyzed the power outage range during the expansion process using single busbar,double busbar,and one and a half circuit breaker wiring methods.For the expansion method of reserved isolation switches,power outages during equipment expansion can be avoided by adding isolation chambers.At the same time,power outages during voltage withstand testing can be avoided by using double break isolation switches or same frequency and same phase voltage withstand testing techniques.For the end expansion method,the expansion interval can be constructed first,and after the installation is completed and the expansion part undergoes a voltage withstand test,the busbar connection can be carried out to reduce power outage time.