电力保护电流互感器测量误差检测方法研究  

Research on Measurement Error Detection Method for Power Protective Current Transformer

作　　者：吴顺成 WU Shuncheng(Ninghe Power Supply Branch of State Grid Tianjin Electric Power Company,Tianjin,301500 China)

机构地区：[1]国网天津市电力公司宁河供电分公司,天津301500

出　　处：《科技资讯》2025年第1期58-60,共3页Science & Technology Information

摘　　要：受多方面因素共同影响,电流互感器测量结果存在较大误差,为此,提出电力保护电流互感器测量误差检测方法。构建电流互感器“光-电-磁”三维多物理场耦合模型,综合分析将原始的光信号转换为电信号的实现过程。在测量误差分析阶段,引入磁动势和电动势平衡法则,根据磁动势和电动势失衡状态,确定具体的误差程度,实现电力保护电流互感器测量误差检测。测试结果表明,误差检测结果与实际误差之间的差异稳定在0.03A以内,与对照组相比,准确性和稳定性方面具有明显优势。Due to the joint influence of multiple factors,there is a large error in the measurement results of current transformer.Therefore,a measurement error detection method for power protective current transformer is proposed.A three-dimensional optical-electrical-magnetic multiphysics coupling model of the current transformer was constructed,and the realization process of converting the original optical signal into an electrical signal was comprehensively analyzed.In the measurement error analysis stage,the Magnetomotive Force and Electromotive Force Balance Law is introduced,and the specific error degree is determined according to the imbalance state of the magnetomotive force and electromotive force,so as to realize the measurement error detection of the power protective current transformer.The test results show that the difference between the error detection result and the actual error is stable within 0.03 A,which has obvious advantages in accuracy and stability compared to the control group.

关 键 词：电流互感器 测量误差检测 “光-电-磁”三维多物理场耦合模型 光信号 电信号 磁动势和电动 势平衡法则 

分 类 号：TM452[电气工程—电器]