GIS配电装置不停电扩建研究

Tudy on the Uninterrupted Expansion of GIS Power Distribution Equipment

本文以GIS配电装置为研究对象,结合安装调试和耐压试验,对预留母线扩建间隔和新建母线扩建两种类型进行了不停电扩建分析,提出了采用双断口隔离开关和可拆卸导体两个不停电扩建方案。双断口隔离开关方案适用于预留母线扩建间隔方案,由于其结构可靠,可满足不停电安装调试和耐压试验要求;可拆卸导体方案理论上适用于预留母线间隔和新建母线扩建型式,但由于可拆卸导体安装后本身无法进行不停电耐压试验,运行单位难以接受。为达到GIS配电装置不停电扩建目的,推荐GIS配电装置考虑母线一次建成,扩建间隔采用双断口隔离开关。

This paper takes GIS power distribution equipment as the research object,combines installation,debugging and withstand voltage test,analyzes the uninterrupted power expansion of the two types of bus expansion:reserved bus expansion bay and new bus expansion,and proposes two uninterrupted power expansion schemes,namely,double break disconnector and removable conductor.The scheme of double break disconnector is applicable to the scheme of reserved bus expansion interval.Because of its structural reliability,it can meet the requirements of uninterrupted installation,commissioning and withstand voltage test;The detachable conductor scheme is theoretically applicable to the reserved bus bay and the new bus expansion type,but it is difficult for the operating unit to accept because the detachable conductor itself cannot undergo the uninterrupted voltage withstand test after installation.In order to achieve the goal of uninterrupted expansion of GIS power distribution device,it is recommended that GIS power distribution device consider the one-time construction of bus,and the expansion interval adopts double break disconnector.