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研究了电气设备绝缘在线检测中获取被测信号的关键元件——电流传感器 ;分析了传感器的基本工作原理 ;提出了其设计方法 ;讨论了传感器的电路结构、屏蔽措施和误差。通过理论分析和测试 ,研制出了结构简单、性能稳定、满足在线检测要求的电流传感器
The key element of the measured signal in electrical equipment insulation on-line testing is researched-the current sensor; the basic working principle of the sensor is analyzed; the design method of the sensor is proposed; the circuit structure of the sensor, shielding measures and errors are discussed. Through theoretical analysis and testing, developed a simple structure, stable performance, to meet the requirements of online testing current sensor