测量用电流互感器数字补偿算法  

Digital Compensation Algorithm for Measuring Current Transformer

作　　者：吕建虎[1] 胡忠林[1] 

机构地区：[1]国网电力科学研究院,江苏南京210003

出　　处：《江苏电机工程》2012年第3期27-30,共4页Jiangsu Electrical Engineering

摘　　要：为了提高测量用电流互感器(CT)的精度,通常采用高磁导率的材料和大横截面积的核心使励磁电流最小化,这种做法会增加CT的制造成本。提出了一种提高测量用CT精度的数字补偿算法,根据副边电流测量值和铁心磁化特性,通过算法计算并补偿励磁电流来提高测量用CT的精度,仿真和实验验证了该算法的有效性。In order to improve the measurement accuracy of current transfon＇aer （CT）, the magnetic material with high permeability and core with large cross-sectional area are usually used to minimize the exciter current. However, the practice will increase CT manufacturing cost. In the paper, a digital compensation algorithm to improve the CT measurement accuracy is proposed. And the exciter current can be calculated and compensated according to the secondary measured current value and the magnetization characteristic of iron core. The effective of the algorithm is verified through simulation and experiment results.

关 键 词：测量 电流互感器 励磁电流 数字补偿 

分 类 号：TM452[电气工程—电器]