智能变电站行波检测新方法的研究

Research on Travelling Wave Detection Method in Smart Substation

随着智能电网的发展,电力系统对于自愈性有了更高的要求。行波定位技术的发展为快速查找故障点,减少巡线时间做出了突出贡献。与传统定位方法相比较,应用于智能变电站的行波定位技术要求解决与电子式互感器的接口问题和采样频率匹配问题。本文提出了一种行波波头检测的新方法,该方法使用硬件检测的方法检测行波波头,并将行波波头信息分解为幅值判据、极性判据和积分判据,综合判断波头到达时间,为智能变电站行波定位提高了坚实的基础。

With the development of smart grid, stability of Power supply system is more important. The developments of traveling wave location system play an important role in quick fault location. In comparing with existing system, in fault location device for smart station distributed sampling is adopted and access to electronic transformer is provided. A new traveling wave detection method is presented in the paper, traveling wave crest can be decomposed into amplitude component ,polar component and integral components by hardware circuit. The arrival time can be recorded by hardware circuit. It provides a basic for traveling wave fault location in smart grid.