电容式电压互感器参数的测试方法分析

论述了目前电力系统大量采用的TYD型电容式电压互感器，该类互感器由于其最下节电容器与中间互感器的一次线圈并联合装在一个小的铁油箱内，给电容器的试验带来了不便，用传统的正接线或负接线测量方法无法测量到第二节及最下节电容器的真实介损值及电容量，根据结构特点提出了新的试验方法从而准确真实地进行测试。

Parameter Testing Methods Analysis of Capacitor Voltage Transformer

At present the model of the voltage transformer mostly operating in the electrical power system is TYD electric capacity type voltage transformer. The second and the third capacity are put in a small tank with the middle PT, so it is difficult to test. It is impossible to test the true value of the measure tanδ and capacity of the second and the third capacity using the traditional method of positive pole and negative pole. The new testing methods are proposed based on its structure characteristics.