基于瞬时功率控制的分布式新能源并网策略  

A distributed new energy grid-connected strategy based on instantaneous power control

作　　者：祖光鑫 陈银娥 于海洋 武国良 孙东阳[1] 杨世彦[1] Zu Guangxin;Chen Yine;Yu Haiyang;Wu Guoliang;Sun Dongyang;Yang Shiyan(Harbin Institute of Technology,Harbin 150001,China;Electric Power Research Institute of State Grid Heilongjiang Electric Power Company,Harbin 150030,China)

机构地区：[1]哈尔滨工业大学,哈尔滨150001 [2]国网黑龙江省电力有限公司电力科学研究院,哈尔滨150030

出　　处：《电测与仪表》2018年第8期77-81,共5页Electrical Measurement & Instrumentation

基　　金：国家自然科学基金面上项目(51677036)

摘　　要：随着我国分布式新能源光伏发电的快速增长,分布式光伏的大量接入与配电网的承载能力之间矛盾日益突出,如何提升分布式光伏系统的并网特性使之适应当前配电网环境是亟需解决的问题。基于此,文中提出了一种基于瞬时功率控制的分布式光伏并网策略,通过对分布式光伏系统并网点瞬时功率的控制,实现分布式光伏并网系统根据配电网状态进行实时的输出功率控制。基于分布式光伏并网系统的仿真算例,利用文中控制策略对配电网两种不同无功状态补偿进行仿真实验,理论分析和仿真结果证明了该并网控制策略的有效性。With the rapid growth of distributed photovoltaic power generation in China,the contradiction between the large number of distributed PV access and distribution capacity of distribution network has become increasingly prominent.How to improve the grid-connected characteristics of distributed PV system and make it adapt to the current distribution network environment is a problem that need to be solved.Based on this,a distributed PV grid-connected strategy based on instantaneous power control is proposed in this paper.Through the control of the instantaneous power of the PV system,the PV grid-connected system realizes the real-time output power regulation according to the state of the distribution network.Based on the simulation example of PY grid-connected system,this simulation strategy is used to simulate the two different reactive power states of the distribution network.The theoretical analysis and simulation results show the effectiveness of the grid-connected control strategy.

关 键 词：三相光伏并网 瞬时功率控制 并网控制策略 配电网 

分 类 号：TM933[电气工程—电力电子与电力传动]