基于单端电气量的故障定位算法研究

Study on Fault Localizing Algorithm Based on Single End Electric Quantity

快速简单的输电线路故障定位是电力系统急需解决的问题。基于线路单端电气量，推导了适应于各种故障情况下的定位算法。该算法简单快捷，易于工程实现，基本克服了影响传统单端法定位精度的过渡电阻影响。经EMTP仿真验证，该算法在非恶劣故障情况下，定位误差基本均在1％以内，具有工程应用价值。

The fast and simple fault localizing method for transimssion lines is the prohlem to be urgently solved. Based on the single-end electric quantity of the line, the localizing algorithm adapting to different kinds of faults is derived. This algorithm is simple, fast and easy for engineering use. It overcomes the influnce of transitional resistance on localization areuracy by traditional single-end method. Through EMTP simulation test, the localizing error of this algorithm is within 1% under none adverse conditions, thus it is valuable for engineering practice.