电力市场环境下含大规模风电场的输电网规划  

Expansion planning of transmission network with large wind farm in deregulated electricity market environment

作　　者：张新松[1,2] 袁越[2] 吴博文[2] 李强[2] 

机构地区：[1]南通大学电气工程学院,江苏南通226019 [2]河海大学能源与电气学院,江苏南京210098

出　　处：《电力自动化设备》2012年第4期100-103,共4页Electric Power Automation Equipment

基　　金：国家自然科学基金资助项目(51077041)~~

摘　　要：对传统的启发式的电网规划算法进行了改进,使其能适应电力市场化改革和大规模风电场给电网规划带来的挑战。利用蒙特卡洛模拟法分析了风电场出力的概率密度函数,根据市场交易体制研究了其他机组出力的概率密度函数,利用直流潮流模型分析了网络中各支路有功潮流的概率密度函数和过负荷概率。综合考虑建设成本和盈利预期提出了衡量线路重要性的效应指标,以此指标为依据得出电网规划方案。以Garver 6节点系统为仿真算例证明了该方法的可行性。仿真结果还表明:电力市场化改革和并网风电场出力的随机性会显著改变网架结构,并有可能增加网络投资。The heuristic algorithm of conventional TNEP （Transmission Network Expansion Planning） is improved to meet the needs of grid-connected large-scale wind farm and deregulated electricity market. Monte Carlo simulation method is applied to deduce the PDF（Probability Density Function） of wind farm power output and the PDF of unit power outputs is determined according to electricity market swapping mechanism. The direct power flow model is adopted to analyze the PDF of line active power and the line overload probability. An effectiveness index considering both cost and profit prospect is put forward to evaluate the importance of line,based on which the TNEP is carried out. Simulative results for Garver 6-bus test system demonstrate the feasibility of the improved algorithm and the obvious effect of both deregulated electricity market and irregular wind power output on TNEP,probably resulting in the investment increase.

关 键 词：输电网 电网规划 电力市场 蒙特卡洛法 风电场 

分 类 号：TM715[电气工程—电力系统及自动化] TM614