基于机会约束规划的孤岛模式下微电网动态经济调度  

Dynamic economic dispatch based on chance-constrained programming for islanded microgrid

作　　者：任建文[1] 渠卫东[1] 

机构地区：[1]华北电力大学新能源电力系统国家重点实验室,河北保定071003

出　　处：《电力自动化设备》2016年第3期73-78,共6页Electric Power Automation Equipment

基　　金：国家自然科学基金资助项目(50837002)~~

摘　　要：新能源出力波动、负荷预测误差等不确定性因素给孤岛模式下微电网经济调度带来了困难,采用安排发电及储能单元出力、新能源发电侧和负荷侧管理的方法,提出基于机会约束的孤岛模式下微电网动态经济调度模型。该模型将风光出力和负荷预测误差用随机变量表示,并以旋转备用满足的置信水平表征微电网的供电可靠性水平。将机会约束转化为其确定性等价类,推导出失负荷期望的数学表达式,并给出改进的粒子群优化算法以求解模型。算例分析结果验证了所提模型的合理性。The uncertainty factors,such as renewable power generation fluctuation and incorrect forecasted load,bring difficulty to the economic dispatch of islanded microgrid. A dynamic economic dispatch model based on chance-constrained programming is proposed for islanded microgrid,which adopts the scheduled power outputs of generation units and energy storage unit and the generation-side and load-side managements of renewable power. It represents the wind/photovoltaic power outputs and load forecasting error as random variables and the confidence level of satisfying the spinning reserve as the power-supply reliability of microgrid. The chance constraints are converted into their certain equivalent classes to derive the mathematical expression of expected load loss. A modified particle swarm optimization algorithm is applied to solve the model. Results of case analysis verify the rationality of the proposed model.

关 键 词：微电网 孤岛模式 动态经济调度 机会约束规划 粒子群优化算法 负荷预测 误差 

分 类 号：TM711[电气工程—电力系统及自动化]