联网分布式发电系统规划运行研究  

A Study on Grid-connected Distributed Generation System Planning and Its Operation Performance

作　　者：陈琳[1] 钟金[2] 倪以信 甘德强[1] 

机构地区：[1]浙江大学电气工程学院,浙江省杭州市310027 [2]香港大学电机系 [3]清华港大深圳电力系统研究所,广东省深圳市518055

出　　处：《电力系统自动化》2007年第9期26-31,共6页Automation of Electric Power Systems

基　　金：香港政府研究资助局(RGC)资助项目(HKU7201/05E);香港大学基础研究种子计划项目(200511159071)~~

摘　　要：分布式发电(DG)与输电网联合供电成为电力系统发展趋势。输电系统与DG联合供电的规划、运行分析对满足可靠性条件下的经济供电尤为重要。文中针对远离发电中心、与输电系统弱连接的配电系统,为了满足负荷增长要求,以DG投资费用和向输电网购电费用最小为优化目标,分别对输电网正常运行且价格固定、考虑停运状态和实时电价3种典型输电网情况下联网DG系统进行规划。通过应用启发式算法,得到了各种情况下系统最优供电方案。根据不同情况下系统运行性能分析,定量讨论了输电网停运、实时电价以及可再生能源随机发电对分布式电源类型、容量等规划运行结果的影响,优化结果体现了联网DG系统联合供电优势。In the trend towards developing the grid-connected distributed generation （DG） system, a study 9n generation expansion planning and its operation performance is of great importance to achieve optimality and reliability of power system development and operation. Aimed to minimize the total investment cost of DG and the cost of purchasing power from the main grid, this paper proposes a heuristic approach to determine optimal distributed generation capacity investment for a rural distribution system under typical transmission system scenarios, including normal operation with fixed electricity price, consideration of the outage state circumstance as well as real-time price under the competitive electric power market condition. Furthermore, through operation performance analyses under various scenarios, the influences of transmission system outage indexes, real-time price and randomness of renewable generation resource on the system design are discussed. The superiority of the grid-connected DG system is shown by the results of a numerical example.

关 键 词：分布式发电 最优规划 启发式算法 蒙特卡罗仿真 

分 类 号：TM715[电气工程—电力系统及自动化]