电力系统无功优化规划的进化策略法

无功优化规划是一个复杂的混合优化问题，传统方法较难获得全局最优解。文中提出了求解电力系统无功优化规划的进化策略方法。该方法通过对不同类型的变量采用不同的变异函数，使得进化策略方法可以解决组合优化问题，对优化问题无可导性要求，对初始点无特殊要求，获得全局最优解的概率大。以IEEE-9节点系统为例进行无功优化规划计算，结果表明此算法是可行的。

AN EVOLUTIONARY STRATEGY METHOD FOR REACTIVE POWER PLANNING OF POWER SYSTEMS

Reactive power planning is a complicated m ixed optim ization problem . Therefore,it is rather difficult to find out the global optim al solution with traditional methods.An evolutionary strategy ES m ethod is proposed in the paper in which the integer and continuous variables are treated with different m utation approaches.Then the m ethod is applied to the optimization of reactive power planning. The method does not necessitate the optimization problem be derivable nor the initial point be of any special value.Also it has high possibility of obtaining the global optimal solution.Testing results of applying this method to an IEEE- 9bus system show that the method has good convergence,strong adaptation and feasibility to the optimal solution.