基于路径跟踪内点法的电力系统无功优化

Reactive power optimization of power system based on path following interior method

采用的电力系统无功优化算法是以整个网络的网损最小为目标函数,以无功补偿设备出力,发电机端电压调节和可调变压器变比为控制变量,以发电机无功出力和变压器端电压幅值为状态变量建立线性规划模型方程,采用路径跟踪内点法对模型进行进一步处理,从而获得各控制变量和状态变量的最优解,优化的结果表明,此方法降低了电力系统的网损,有效地调节了各点的电压并提高了收敛的特性和速度。

For the algorithm of reactive power optimization, presented in this paper, in order to found the linear programming model equations, the objective function is minimum total power losses, the controlled variables include the compensating capacity of reactive power, generator bus voltages and transformer tap positons,the state variables include reactive power of the generators, the voltage amplitudes in ends of transformers.Then,the path following interior method is being used to solve the linear programming model equations in order to get the optimal values of the control variables and state variables. The optimal resuhs show that it can make the power loss in the systems decreasing, regulate the voltage of all points effective and increase the characteristics and speed of the convergence.