The sensor of traveling-wave for fault location in power systems
The sensor of traveling-wave for fault location in power systems
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DOI：
10.1109/icpst.2004.1460243
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发表时间：
2004-11
期刊：
影响因子：
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通讯作者：
Zeng Xiangjun;Z. Yanling;L. Zhengyi;Lin Gan
中科院分区：
文献类型：
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作者：
Zeng Xiangjun;Z. Yanling;L. Zhengyi;Lin Gan
故障产生的高频信号包含大量信息，可用于电力系统故障点的准确定位。为了捕获高频信号，本文研制了两种专门设计的行波传感器。一种是安装在电容式设备（如：无级变速、电容式CT、变压器套管、墙套管）接地线上的电流传感器，用于捕捉从设备流向地的电流行波。另一种是安装在电压互感器零序绕组上的电压传感器，用于捕捉故障产生的三相电压行波。本文还简要介绍了采用行波传感器的故障定位系统。该传感器和故障定位系统已在110kv电力系统上进行了试验。结果表明，该传感器具有良好的行波捕获性能，故障定位误差不超过120 m。
The fault-generated high frequency signals contain much information which can be used to accurately locate the fault point in power systems. For capturing the high frequency signals, two specially designed traveling-wave sensors are developed in the paper. One is the current sensor installed on the earth line of capacitive equipment (such as: CVT, capacitive CT, transformer bushing, wall bushing) to capture the current traveling-waves flowing from the equipment to earth. The other is the voltage sensor installed at the zero sequence winding of a voltage transformer to capture the voltage traveling waves in three-phase generated by faults. The fault location system with the traveling wave sensors is also developed simply. The sensors and the fault location system have been tested on an 110 kV power system. Results show that the sensors have good performance to capture traveling-waves and the error of fault location is no more than 120 m.