光伏发电输出功率对配电网铁磁谐振的影响分析  

Analysis of influence of output power of photovoltaic generation on ferromagnetic resonance in power distribution network

作　　者：李朝平 杨小兵 白维祖 赵映忠 李晓英[2] 王兴贵[2] LI Chao-ping;YANG Xiao-bing;BAI Wei-zu;ZHAO Ying-zhong;LI Xiao-ying;WANG Xing-gui(China Energy Engineering Group Gansu Electric Power Design Institute CO.,LTD,Lanzhou 730050,China;College of Electrical Engineering and Information Engineering, Lanzhou Univ.of Tech.,Lanzhou 730050,China)

机构地区：[1]中国能源建设集团甘肃省电力设计院有限公司,甘肃兰州730050 [2]兰州理工大学电气工程与信息工程学院,甘肃兰州730050

出　　处：《兰州理工大学学报》2018年第5期85-89,共5页Journal of Lanzhou University of Technology

摘　　要：光伏发电输出功率的变化对配电网铁磁谐振有一定影响.为此,简单分析了光伏发电输出功率对并网点电压造成波动的原因,并对光伏发电接入配电网时的等值电路作了简化.由简化电路建立了光伏发电输出功率与配电网铁磁谐振之间的等式,通过对所建立的等式分析可以得出:配电系统参数满足一定条件,光伏发电输出功率发生变化时会引起配电网发生铁磁谐振.The change of photovoltaic output power has a certain influence on the ferromagnetic resonance of the power distribution network.Therefore,the reason that the output voltage of the photovoltaic power generation can cause voltage fluctuations at grid connection point is simply analyzed,and the equivalent circuit of photovoltaic access to power distribution network is simplified.The equality of output power of photovoltaic power generation with ferromagnetic resonance of power distribution network is established with that simplified circuit.It can be obtained with analysis of the established equality that when the power distribution system parameters meet certain conditions,the change of the output power of photovoltaic power generation will cause ferromagnetic resonance in power distribution network.

关 键 词：配电系统 铁磁谐振 光伏发电 功率 

分 类 号：TM864[电气工程—高电压与绝缘技术]