大型GIS电流互感器二次回路校验技术研究

Research on the Secondary Circuit Calibration Technology of Large-Scale GIS Current Transformer

传统的二次电流回路校验方式已逐渐不能满足高效率的施工需求,利用多间隔带母线GIS设备的特点,研发了具有三相电流输出和电网相位同步功能的电流回路仿真校验仪,通过从GIS母线加入三相电流、从各间隔线路地刀流出而构成回路的方式,模拟GIS间隔的实际运行情况,从而通过带负荷测试而达到校验回路的目的。本方法的核心电流回路仿真校验仪已获得使用新型专利授权,论文研究为进一步完善该二次电流校验技术的施工工法,以便以后推广应用。

Traditional secondary current loop verification methods have gradually failed to meet high-efficiency construction requirements.Taking advantage of the characteristics of multi-interval busbar GIS equipment,a current loop simulation verification with three-phase current output and grid phase synchronization functions has been developed.The instrument simulates the actual operation of the GIS interval by adding three-phase current from the GIS bus bar and flowing out from the ground knife of each interval to form a loop,so as to achieve the purpose of verifying the loop through a load test.The core current loop simulation calibrator of this method has been authorized to use a new type of patent,and the thesis research is to further improve the construction method of the secondary current calibration technology for future popularization and application.