电流互感器误差测试大电流回路特性及改善方法研究  

Research of Current Loop Impedance and Improving Method of on-site Calibration for Current Transformers

作　　者：孙冲[1] 耿建坡[1] 崔海利[1] 林占伟[1] 孙振亮[1] 张景涛[1] 

机构地区：[1]河北省电力研究院,石家庄050021

出　　处：《电测与仪表》2012年第9期58-62,共5页Electrical Measurement & Instrumentation

摘　　要：以现场试验数据为基础,分析计算了电流互感器现场误差试验中一次大电流回路的阻抗特性,得出该回路中功率因数较低,无功消耗较大的结论。提出采用无功补偿的方法来减少现场试验设备的无功损耗,提高设备使用效率,提高现场试验技术水平的方法。研制了自动无功补偿装置,通过试验验证了该装置在电流互感器误差试验中的应用效果。Based on on-site calibration test date, it is calculated and analyzed a current loop impedan calibration of current transformers. And the conclusion is that because of the long test loop and th impedance,there is large Var cost and low power factor in the loop. To reduce Var cost,the static Var is used in the on-site test. The efficiency of on site test equipment is enhanced, and the technique lev test is advanced. The Vat compensator used in the test is produced. The effect used in current calibration test is proved by the experiment.

关 键 词：电流互感器 误差检定 阻抗特性 无功补偿 

分 类 号：TM933[电气工程—电力电子与电力传动]