基于阻抗法和行波法组合的复线牵引网故障测距研究

由于牵引网故障测距常用的两大算法阻抗分析法和行波分析法在不同的情况下各有优缺点,因此很难用一种算法取得理想的测距结果。经过仿真对比阻抗算法和行波算法,发现二者具有优缺点互补的特性。由此提出将两种算法结合应用,取其优点,舍其缺点来提高现有故障测距算法的精确度。分别采用改进的阻抗分析法和行波分析法对30 km长的复线直供带机车牵引网模型进行仿真和误差分析。对仿真结果进行综合分析后提出组合算法,结合阻抗算法和行波算法的优点得出改进精度的仿真数据,误差分析表明结果令人满意。研究提示阻抗法和行波法组合的故障测距算法在牵引网实际应用中可能具有良好的应用前景。

Combining the traveling wave method and the impedance method to study the fault location of the double-line traction network

There are two common methods applied in the traction line fault location,the traveling wave method and the impedance method.Each method has advantages and disadvantages.It is difficult to achieve optimized goal with only one method.The present studies have simulated and compared that the traveling wave method and the impedance method were mutual complementary.Therefore,this paper combines the traveling wave algorithm and the impedance algorithm to improve the accuracy of the fault location algorithm.Their advantages are utilized and their disadvantages avoided.The 30 kilometers double-line traction network with locomotive is simulated with the software PSCAD.Both the traveling wave method and the impedance method are used to calculate the fault distances and estimated the errors respectively.After synthetically analysis,the enhanced accuracy simulation results are deduced,and the integrated simulation results have been proved to be highly accurate.The combining-algorithm in the fault location has promising future in the practical application.