微网高渗透对电网稳定性的影响分析  

Investigation of the influence of microgrids high large penetration ratios on power network stability

作　　者：张佳佳[1,2] 陈金富[1] 范荣奇[1] 

机构地区：[1]华中科技大学湖北省电力安全与高效重点实验室,湖北武汉430074 [2]湘潭大学信息工程学院,湖南湘潭411105

出　　处：《电力科学与技术学报》2009年第1期25-29,共5页Journal of Electric Power Science And Technology

基　　金：国家重点基础研究发展计划(973计划)项目(2009CB219701);湖南省教育厅科技项目(08C876)

摘　　要：微网对电网的渗透改变了电网中能量传递的单向性,对现有电网的稳定性产生较大影响.分析不同渗透率下微网对电网电压稳定和功角稳定的影响,通过标准EPRI36节点测试平台进行数字仿真验证,得出允许的最大渗透率,并进一步讨论了影响渗透率的主要因素,为微网中各分布式发电的最优能量匹配和提高微网并网时电网的可靠性、稳定性提供一定的理论依据.The penetration of microgrids modifies the character of energy flow direction in power systems, which has a great impact on power networks stability. The influence of the microgrids penetration ratio on voltage variety and power angle stability is analyzed in this paper. ,Numerical simulation is carried out with an EPRI 36 bus test system, and the allowable maximum penetration ratio is obtained. The factors that affect the penetration ratio are investigated. The studies in this paper provide evidences for the optimal energy matching of DG in microgrids and improvement of the stability and reliability of the power system connected microgfids.

关 键 词：分布式发电 微网 渗透率 电网稳定 

分 类 号：TM712[电气工程—电力系统及自动化]