低压抗直流电流互感器及检测装置研究

Research on low anti-DC current transformer and its detection device

针对传统低压电流互感器在直流分量负荷下存在传变误差大的技术缺陷,分析了直流分量导致传统电流互感器失准的机理,研发了低压抗直流分量电流互感器,并提出了电流互感器抗直流性能检测方法,在此基础上研制出电流互感器抗直流性能检定装置。实验证明该抗直流分量电流互感器具有较好的抗直流性能,能满足现场运行要求。

Aiming at the technical defects of large transfer error of traditional low-voltage current transformer with DC component load,the misalignment mechanism of the DC component causes the traditional current transformer was analyzed. A low-voltage direct current transformer of anti half wave DC was developed,and a detection method for antiDC performance of current transformer was proposed. Based on the method,an anti-DC performance verification device of current transformer was developed. The experiment proved that the developed anti-DC component current transformer with good performance which can satisfy the field operation requirements.