电力市场下含风电场电力系统动态无功成本优化研究

Research on Dynamic Reactive Cost Optimization of Power System Containing Wind Farms in Electricity Market

在电力市场逐步完善的背景下,为无功调压设备制定计价原则,可以平衡发电企业和供电公司的利益并降低无功补偿成本。首先考虑双馈风机与同步电机的P-Q特性建立发电机无功计价模型,提出了一种在风速波动下的双馈风机无功分段计价策略,建立了以发电机无功成本、离散变量动作折旧价格、有功网损折合成本和节点电压总偏差为目标函数的动态无功优化模型。采用改进杂交粒子群算法对所建立动态无功优化模型进行求解,提高了全局寻优能力和收敛速度。最后以IEEE30节点为例,用MATLAB软件进行了仿真分析,验证了所提出的模型、策略和算法的有效性。

In the context of the gradual improvement of the electricity market, formulating pricing principle for reactive voltage regulating equipment can balance the profits of power generation enterprise and power supply companies and reduce the cost of reactive power. By considering the P-Q characteristics of DFIG and synchronous motor, a generator reactive power pricing model is established, and a DFIG reactive power segment pricing strategy in case of wind speed fluctuation is proposed. A dynamic reactive power optimization model for power system with wind farm is established, whose objective function are generator reactive power cost, discrete variable action depreciation price, active power network loss combined cost and total node voltage deviation. A new improved HPSO algorithm is proposed to solve the dynamic reactive power optimization model, which improves the global optimization ability and convergence speed. Finally, the IEEE30 node is taken as an example to analyze the effectiveness of the proposed model, strategy and algorithm is verified with simulation on MATLAB.