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首页> 外文期刊>Electric power systems research >Transient conditions in CCVTs outputs and their effects on the detection of traveling waves
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Transient conditions in CCVTs outputs and their effects on the detection of traveling waves

机译：CCVT的输出中的瞬态条件及其对行波检测的影响

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摘要

It can be considered that coupling capacitor voltage transformers have two outputs. The first is the fundamental frequency output, normally used to feed relays and meters. This output has a limited bandwidth and its response is typical of a low-pass filter. The second is the high-frequency output, normally used for Power Line Carrier application. This paper demonstrates, by means of digital simulations conducted with EMTP/ATP, that it is possible to capture, using the second output, the appropriate traveling wave voltage signals that are required for the correct operation of an EHV transmission line fault locator system, for line maintenance purposes. This paper also demonstrates that, due to the behaviour of the high-frequency output, it is possible to obtain the voltage information that is needed to locate lightning discharges that reach the line and do not cause insulator flashover. This information can be very important for transmission line maintenance purposes.
机译：可以考虑耦合电容器电压互感器有两个输出。第一个是基频输出，通常用于给继电器和仪表供电。该输出具有有限的带宽，其响应是低通滤波器的典型响应。第二个是高频输出，通常用于电力线载波应用。本文通过使用EMTP / ATP进行的数字仿真证明，可以使用第二个输出来捕获EHV输电线路故障定位系统正确运行所需的适当行波电压信号，以用于线路维护目的。本文还证明，由于高频输出的行为，可以获得定位到达线路且不会引起绝缘子闪络的雷电放电所需的电压信息。该信息对于传输线维护而言可能非常重要。

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