基于简单通信的双端行波测距新方法

提高测距的可靠性和精度是行波故障定位研究的重点。在对比了传统的单、双端行波测距的性能以后，认为双端法的定位精度明显提高，但测距可靠性依赖于授时系统的稳定性。因此，在双端能够进行简单通信情况下，提出利用连接线路两端的信道，在检测到初始波头后立即向对端发送脉冲信号，并利用高精度计时器结合行波波速，在无双端对时的条件下实现初始波头到达时间之差的测定和故障位置的计算。通过分析现有的硬件制造技术和仿真试验后，认为该方法具有较高的精度。

A Novel Method for Double Terminal Traveling Wave Fault Location Based on Simple Communication

Improving the reliability and precision is of vital importance for traveling wave fault location. After a brief comparison of the pros and cons of single terminal method and double terminal method, it comes to the conclusion that even though the traditional double terminal method have higher precision, its reliability is highly dependent on the time dissemination system. Therefore, by taking advantage of the connection channel at the ends of the lines where simple communication can be performed, a pulse signal is sent immediately to the other terminal as soon as the initial wave-front is detected. Then using high precision timer together with wave velocity, the fault location can be calculated without time synchronization at both ends. Finally through the analysis of the existing hardware manufacturing technology, it is believed that this method will have higher accuracy.