分析了风电场无功电源的优化配置,针对实际运行状况,给出一种基于无功优化理论的静止同步补偿器(STATCOM)控制策略.利用风电场并网系统的无功优化数学模型和非线性原对偶内点法解决非线性规划问题的方法,实现了无功电源STATCOM的优化控制,并通过有功网损/灵敏度分析法确定并网系统的无功补偿点.在电力系统仿真软件DIgSILENT/PowerFactory中对某地区部分风电场并网系统进行无功电源配置.仿真结果表明,STATCOM配置方案对提高并网系统电压稳定性、有功网损和电压偏差有更好的改善作用,控制策略有效、可行.
The optimal reactive power flow solutions to command the reactive power injection of static synchronous compensator( STATCOM), the voltage stability margin and total active power losses of the power system were studied. Based on the mathematical model of the muhi-objective wind farms with grid-connection and the nonlinear primal-dual interior point algorithm, solutions of optimal reactive power flows are set as the STATCOM' s controller. Sensitivity analysis are used to choose the optimal compensation nodes~ The simulation results verify the validity of the control strategy.