考虑三相潮流的微网经济运行研究  

Research on microgrid economic operation considering three-phase power flow

作　　者：陈洁[1] 杨秀[1] 朱兰[1] 张美霞[1] 王海波[1] 

机构地区：[1]上海电力学院,上海200090

出　　处：《电力系统保护与控制》2013年第7期14-22,共9页Power System Protection and Control

基　　金：国家863高技术基金项目(2011AA05A106);国家自然科学基金(50977055);上海市科委重点科技攻关计划(10dz1203100;11dz1210405);曙光计划(10SG51);上海高等教育‘085’工程建设项目;上海市教育委员会重点学科建设项目资助(J51301)~~

摘　　要：由于微网中微源和负荷存在不对称性,传统的对称经济调度模型已不适用于此类系统。在考虑三相潮流以及微源同时提供有功和无功出力的基础上,建立了计及制热收益的热电联产型微网系统经济运行模型。以一个包含风、光、储、微型燃气轮机、燃料电池以及热电负荷的Benchmark微网为例,运用改进遗传算法优化了考虑实时电价的并网运行方式下各微源的有功、无功出力,验证了节点电压质量,并对比分析了微源采用不同的潮流计算模型对系统经济运行优化结果的影响。通过算例验证了所提模型和算法的有效性。Traditional symmetric economic dispatch models are not applicable to the microgrid with distributed generations because of the unbalance in microsources and loads. An optimization model of economic operated CHP microgrid system considering three-phase power flow and heating income is established. The microsources can provide both active and reactive power in the model. The Benchmark microgrid consisting of a wind turbine, photovoltaic cells, a storage battery, a micro turbine, a fuel cell, heating and electric loads is selected. The improved genetic algorithm is used to optimize microsources＇ active and reactive output for grid-connected mode considering spot price. Node voltage quality is verified, and optimization results for microsottrces adopting different power flow models are comparatively analyzed. So the validity of the proposed model and algorithm is proved by the examples.

关 键 词：微网 三相潮流 经济运行 改进遗传算法 热电联产 网架结构 BENCHMARK 

分 类 号：TM732[电气工程—电力系统及自动化]