基于模拟退火-最小二乘混合的故障测距新方法  

Fault Location Scheme for Transimission Line Based on Simulated Annealing and Least Square Algorithm

作　　者：李海锋[1] 梁远升[1] 王钢[1] 杜松轩[1] 

机构地区：[1]华南理工大学电力学院,广州510640

出　　处：《电力系统及其自动化学报》2008年第3期36-40,共5页Proceedings of the CSU-EPSA

基　　金：广东省自然科学基金资助项目(05300167)

摘　　要：输电线路双端频域法故障测距中,考虑线路参数自适应等因素后测距观测方程未知量个数将大大增加。为此,提出一种基于模拟退火-最小二乘混合的输电线路参数自适应故障测距算法,该算法充分利用了模拟退火法的全局搜索能力以及最小二乘法在初值良好情况下快速寻优能力,能有效求解含多个未知数的测距观测方程。基于EM TP的大量仿真计算验证了该算法具有较高的计算精度和稳定性。Considering the aspect of uncertainty on line parameters, double-terminated fault location schemes are suffering from the difficulties of solving multi-dimensional functions. An algorithm combining the simulated annealing （SA） algorithm and least squares method （LSM） was proposed for the fault location scheme containing various unknown line parameters in the paper. The algorithm inherited the global optimal convergence ability of SA and the fast convergence ability of LSM with a good initial value, which made it suitable to solve the multi-dimensional functions of fault location. Extensive EMTP simulations varify the proposed algorithm.

关 键 词：故障测距 频域法 双端数据 模拟退火 最小二乘 

分 类 号：TM773[电气工程—电力系统及自动化]