电力系统保护与控制2016，Vol.44Issue(7)：7-12,6.DOI:10.7667/PSPC150993
输电线路雷击组合测距新算法
A new combined lightning locating algorithm for transmission lines
郭小红 1朱永利 1陈旭 1赵磊 1高艳丰1
作者信息
- 1. 华北电力大学电气与电子工程学院，河北 保定 071003
- 折叠
摘要
Abstract
For the defects of existing lightning location methods for transmission lines, a new combined lightning locating algorithm is proposed. It takes into account the characteristics and application of Lighting Location System (LLS) and one terminal location methods. Firstly, existing LLS is adopted to recognize the lightning distance approximately. Then, the accurate arriving times of wave fronts are obtained with this approximate distance and the line parameters, which involve the reflected wave fronts from the fault point and the opposite terminal of fault line. Finally, accurate results are obtained with one terminal location methods. The algorithm overcomes not only the effects of the geographical environment, detection stations distance and other factors on the locating accuracy of LLS, but also the shortage that the locating accuracy of the single-ended traveling wave method can not be guaranteed because of the difficulty in recognizing traveling-wave fronts. Under lightning stroke fault, locating formula makes full use of measured data, which eliminates the effects of velocity’s uncertainty and the error brought by the conductor sag and the change of line length on the measurement data to a certain extent. The EMTP simulation results verify that the algorithm is correct, and lightning locating accuracy is greatly improved.关键词
输电线路/雷击定位/组合测距/行波/LLS/测距死区Key words
transmission lines/lightning location/combined lightning location/traveling wave/LLS/dead zone of fault location引用本文复制引用
郭小红,朱永利,陈旭,赵磊,高艳丰..输电线路雷击组合测距新算法[J].电力系统保护与控制,2016,44(7):7-12,6.
