【摘要】 在电力系统中,电子式电流互感器已被广泛应用于电流测量,为了解决精确测量小电流(小于1000A)这一国际公认的难题,设计一种新型的电子式电流互感器。针对新型电流互感器传感头的特点,对传感头部分各环节所引入的相位差进行分析研究,根据传感头分析结果设计出一种实用的相位补偿电路,并给出其仿真结果及试验结果。结果表明其精度完全能达到国标0·2级标准。更多还原

【Abstract】 In power system,the electric current transducer has been used to meas ure current widely. In order to solve the international recognized difficulty,which is measuring sm all current(which is less than 1000A) accurately,a new kind of electric current transducer was desig ned. According to the sensor’s characteristic of this transducer,the phase error brought by every taches was analysed. Then according the analysis results,a practicable phase compensation circuit wa s presented. Besides,the imitation and examination results were supplied. And the results i ndicated that the precision could meet the criterion of 0.2 level.更多还原