基于改进BHA的风光联合系统无功优化研究

Research on reactive power optimization of wind and photovoltaic hybrid system based on improved BHA

为了提高风光联合系统的无功调控能力,提出了一种基于改进BHA的风光联合系统无功优化方法。首先分析了风力发电和光伏发电系统的无功调控模型;然后建立了以低线损和低电压偏差为目标的无功优化目标函数和约束条件;接着利用改进BHA建立无功优化调控模型;最后建立了仿真模型并进行了仿真验证。其仿真结果表明:基于改进BHA的风光联合系统无功优化方法收敛效果好,其收敛效率比PSO、BBO和ACO分别提高了82.1%、64.5%以及348%。且其收敛的线损和电压偏差值均是最小,仅为3.56 MW和0.065 8%。其线损比其余三种方法分别降低了0.11 MW、0.19 MW和0.16 MW。研究结果可为电网系统无功优化调控策略提供参考。

In order to improve the reactive power regulation ability of wind and photovoltaic hybrid system,a reactive power optimization method of wind and photovoltaic hybrid system based on improved BHA was proposed. Firstly, the reactive power regulation models of wind power and photovoltaic power system were analyzed. The objective function and constraint conditions of reactive power optimization at low line loss and voltage deviation were established. The reactive power optimization regulation model was established by improving BHA. Then, the simulation model was established for simulation verification. It can be obtained that the reactive power optimization method of wind and photovoltaic hybrid system based on improved BHA has good convergence effect. Its convergence efficiency is 82.1%, 64.5% and 348% faster than PSO, BBO and ASO, respectively. The convergent line loss and voltage deviation are the smallest, only 3.56 MW and 0.065 8%. Its line loss is 0.11 MW,0.19 MW and 0.16 MW smaller than PSO, BBO and ACO, respectively. The research results can provide reference for reactive power optimization regulation strategy of power grid system.