电力系统无功规划优化的一种解析方法

基于解耦方法,以各支路无功潮流为规划变量,并考虑了支路无功损耗的影响,构造了无功优化的非增量2次规划模型,其目标为因无功补偿使有功网损减小获得的收益并扣除补偿费用后的净收益现值最大。采用可完全消除增量变量迭代收敛性问题的拉格朗日乘子法和处理不等式约束的“违限取限”法,求解具有环网的电力网无功优化问题并附有算例。模型适用于35～110kV电力系统的无功优化。

An Analytical Method for Solving Reactive Planning Optimization in Power Systems

Based on the decouple principles quadratic programming model with the "non-incremental" variables for evaluating the optimal scheme of the reactive power compensation in power systems is presented in this paper. In the model, the reactive power flows through all lines are regarded as the variables to be evaluated and the objective is to maximize the present cost of revenue savings associated with reactive compensation. In order to completely solve the convergency problem,the Lagrange multiplier method and the treatment of "setting the violating quantity equal to its bound" are employed. The proposed model is suitable for solving the reactive optimization in 35-110kV power networks, which has been proved to be correct in the practical analysis for a county's power supply network of sichuan province.