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CN104166079A 一种检测电容式电压互感器中电容元件频率冲击电流方法 无效 - 驳回

一种检测电容式电压互感器中电容元件频率冲击电流方法
摘要：
本发明涉及一种检测电容式电压互感器中电容元件频率冲击电流方法，所述方法包括(1)将整流电路与待测电容元件并联；(2)待测电容元件两端并联放电间隙；(3)调节待测变压器输出电压直至放电间隙击穿；(4)维持待测变压器电压恒定下，测定待测电容元件重复频率冲击电流；(5)通过耐受冲击电流次数判断待测电容元件是否符合要求。本发明通过整流电路对电容元件充电，再利用击穿的间隙进行快速放电，从而对电容元件施加重复频率10～20Hz的冲击电流，可以对其耐受重复频率冲击电流的能力进行试验，方法简单可靠易执行。
摘要（英）：

The invention relates to a method for detecting capacitor element frequency impact current in a capacitor voltage transformer. The method comprises the steps of 1 connecting a rectifying circuit and a capacitor element to be detected in parallel; 2 connecting two ends of the capacitor element to be detected to a discharging gap in parallel; 3 adjusting output voltage of the capacitor element to be detected till the discharging gap is broken down; 4 keeping voltage of the transformer to be detected to be constant, and detecting repetition frequency impact current of the capacitor element to be detected; 5 judging whether the capacitor element to be detected meets the requirement or not according to impact current resisting times. The capacitor element is charged through the rectifying circuit, the broken-down gap is re-utilized to perform quick discharge, accordingly impact current with 10 Hz-20 Hz repetition frequency is exerted on the capacitor element, the capacity of resisting the repetition frequency impact current of the capacitor element can be tested, and the method is simple, reliable and easy to execute.

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