直流电流互感器应用分析及测试方法研究

Research on Application Technology and Testing Method of DC Current Transformer

国内直流输电用直流电流互感器投运后,由于缺乏相应试验设备及检测规程,一般都不进行现场的全电流准确度试验。文章详细阐述了直流电流互感器的工作原理,分析了直流换流站电流测量装置的应用技术。在此基础上,本文提出一种直流电流互感器同步测试方法及系统,该测试系统能够完成直流电子式电流互感器全电流下的比差测试和复合误差测试,并在实验室完成了直流互感器的测试验证,依据试验结果对直流电流互感器的性能进行了评估,为后续现场测试提供技术支撑。

Domestic direct current transmission by DC current transformer is put into operation, due to the lack of corresponding test equipments and test procedures are generally not carded out field test. In this paper, the working principle of the DC current transformer is described in detail. On this basis, this paper puts forward synchronous test method and system for DC current transformer, the test system can complete the DC electronic current transformer at full current ratio test and the composite error test and test verification of DC transformer in the laboratory, according to the performance test results of DC current transformer assess, provide technical support for the follow-up test.