中文摘要：

电力系统中，在满足全网可观测的要求下，提出一种模拟退火算法，计算同步相量测量单元（PMU）的最少配置数量以及最优配置方案。为了加快运算速度，通过深度搜索对PMU进行初始配置，进而由二分搜索确定PMU的配置数量，再运用模拟退火算法进行可观测分析并寻找最优配置集合。

英文摘要：

The simulated annealing algorithm is to caculate the least number of phasor （PMU） to be placed and their optimal placement sets to reach the full observability of the network structure of power system. To accelerate the procedure, an initial PMU placement is provided according to a depth-first search, and the number of PMU is fixed through a bisecting search, then used simulated annealing algorithm to analyse the observability and looks for a optimal placement set.