中性点经消弧线圈接地的电网脱谐度微机测试装置

The microprocessor measurement device of turn-of-degree for network neutral through petersen coil to earth

本文采用新的补偿电网脱谐度测量原理,提出了脱谐度的外加扫频信号自动测量方法。并结合微机系统迅速、准确的特点,无需其它参数,即可完成对脱谐度的直接测量。测量结果准确,误差不大于0.64％;测量速度快,历时不足20S;可在-156％～64％大范围内实时监测脱谐度,并实现了测试过程与电网运行双方互不相扰,为在此基础上进行消弧线圈的自动跟踪调谐奠定了良好的基础。

With the new principle for measuring turn-off-degree of compensation network, an auto measuring method through adding external scanning frequency signal is put forward and combines the microprocessor features-fast and precisely. The turn-off-degree can be directly measured without other parameters. The measurement error is not more than 0.64% , the measuring time is less than 20S, turn-off-degree can be monitored at the range of - 156% to 64% . This method makes measuring and network operation separately.