考虑系统多运行方式的微电网逆变控制器参数优化方法  

Optimization Design for Inverter Controllers in Microgrid Considering the System of Multiply Operation Mode

作　　者：董开松[1] 胡殿刚[2] 秦睿[1] 李臻[1] 李韶瑜[2] 沈渭程[1] 

机构地区：[1]国网甘肃省电力公司电力科学研究院,兰州730050 [2]国网甘肃省电力公司,兰州730050

出　　处：《高压电器》2015年第6期115-121,126,共8页High Voltage Apparatus

基　　金：国家电网科技项目(5227221350BR)~~

摘　　要：微电网中光伏发电出力及负荷波动具有的随机性会造成微电网运行方式的动态变化,为在微电网逆变控制器设计中计及这种动态变化,文中提出了一种基于动态概率特征根分析的微电网逆变控制器参数优化方法。这种方法以特征根的动态概率分布特性为微电网的稳定性评价指标,将微电网中逆变控制器参数的整体优化表示为带不等式约束的非线性优化问题,并利用微分进化算法对该问题进行求解。该方法能够全面准确地计及微电网运行方式多样性对系统稳定性的影响,得到的最优控制参数对系统运行方式的变化具有良好的鲁棒性,仿真结果证明了该方法的有效性。The stochastic of photovoltaic power and demand variation in microgrids can cause dynamic changes of microgrid operation mode. To take this dynamic change into account in the design of inverter controller, a method for inverter controller optimization of parameter based on dynamic probabilistic eigenvalue analysis is proposed. This method uses characteristic root of dynamic probability distribution characteristics as a micro power grid stability evaluation index, taking the micro grid inverter controller parameters in the overall optimization with inequality constraint is represented as the nonlinear optimization problem and uses the evolution algorithm to solve the optimization problem. This method can take account for the influence of the varieties of the real time operation of microgrid on system stability accurately and comprehensively, the optimal control parameters of which has good robustness. Simulation results demonstrate the effectiveness of this method.

关 键 词：微电网 小信号稳定 动态概率特征根 微分进化算法 逆变控制器 

分 类 号：TM732[电气工程—电力系统及自动化]