便携式配电网容性电流检测仪的研制

Research and Development of Portable Instrument for Power Distribution Electrical Wire's Capacitive Current Measurement

检测配电网对地电容的容性电流对装设及维护消弧线圈、接地故障熄弧、分析消除PT谐振具有重要意义。针对目前配电系统容性电流检测仪有体积大、质量重、工作效率低等缺点,研发了一款便捷式配电网容性电流检测仪。通过PT二次侧注入异频测试信号检测容性电流。试验结果表明:该检测仪具有体积小、质量轻、测试安全、操作简单快捷,且检测性能稳定、数据准确等优点,具有很好的实用推广价值。

It is of great important to measure power distribution electrical wire＇s capacitive current for installing and maintaining arc suppression coil,quenching arc of ground fault,analyzing how to eliminate PT resonance. Aiming to solve the existing problems of power distribution electrical wire＇s capacitive current measurement instrument,such as large and heavy to move and with low work efficiency,a kind of portable power distribution system capacitive current measurement instrument was developed.The capacitive current was measured easily and conveniently by inputting a test signal through PT secondary coil in this method.Experimental results show that the measurement instrument has advantages of small,light in weight,safe measurement,convenient,simple and fast operation,the detection performance is stable,and the data is accurate and so on. It has very good practical promotion value.