中文摘要：

通过分析行波在电网中的传输特性，根据传输线路故障后的行波方程和电网络拓扑结构，提出了一种基于多自由度的行波装置最优化配置和定位算法。该算法根据行波在电网中传输的自由度．通过求解最大非奇异子集获得最优化配置结果。通过该算法不仅能得到行波故障定位装置的最优化配置。还能有效避免断路器状态的不可靠信息，如断路器发生误动或者拒动对故障定位的影响。利用经过多自由度优化配置的行波装置．通过多点协调实现故障定位。仿真分析表明．该算法简单、可靠．而且能有效地节省行波定位装置的投资成本．

英文摘要：

The propagation characteristics of travelling wave in power grid are studied. According to the travelling wave equation and grid topology after transmission line fault, an optimal placement and fault locating algorithm based on multi-DOF（Degree Of Freedom） is presented,which calculates the optimal placement by solving its maximum nonsingular subset according to the multi-DOF of travelling wave. It is immune to the influence of unreliable circuit breaker status information on fault location. The travelling wave equipment with optimized placement locates the fault by cooperation. Simulative results illustrate the proposed method is simple,reliable and economical.