【摘要】 本文就高压输电线路故障,提出了一种基于实时对称分量法的故障测距新算法.该算法是利用故障电流分布系数的幅角来求解故障距离.理论分析和仿真计算结果表明,该算法能消除负荷电流及过渡电阻变化对测距精度的影响,且只用线路测量端的电量就能精确地求出该端到故障点的距离.更多还原

【Abstract】 A new algorithm for fault location of HV transmission lines based on the real-time symmetric component method is proposed. The argument of the fault current distribution factor is used to calculate the fault location. Theoretical analysis and simulation computation results show that the specific features of the algorithm proposed can be stated as follows: 1. Only on-site information at the measured end of transmission lines is needed; 2. The influence of load current change and fault resistance on the accuracy of the fault location can be eliminated; 3. The relative error of the fault location is less than 2% when the remote system parameters are assumed to change within ±30%. 4. The trigonometric function or anti-trigonomelric function calculation is not necessary; 5. It is simple and has good convergency and is easily realized using a microprocessor.更多还原