一种解决光伏并网馈线电压波动的新方法  

A New method to solve the voltage fluctuation of photovoltaic system

作　　者：杨凯 江渝[1] 唐酿[2] 冯琨 赵宇琪 Yang Kai;Jiang Yu;Tang Niang;Feng Kun;Zhao Yuqi(State Key Laboratory of Power Equipment ＆ System Security and New Technology,Chongqing University,Chongqing 400044,China;Electric Power Research Institute of Guangdong Power Grid Corporation,Guangzhou 510080,China)

机构地区：[1]输配电装备及系统安全与新技术国家重点实验室(重庆大学),重庆400044 [2]广东电网公司电力科学研究院,广东广州510080

出　　处：《可再生能源》2018年第11期1651-1655,共5页Renewable Energy Resources

基　　金：国家自然科学基金项目(50777066);广东电网有限责任公司科技项目(GDKJQQ20152051)

摘　　要：分布式光伏发电系统在并网过程中,由于其间歇性和不稳定性,会造成电网电压的波动,进而影响电力系统的稳定性。电力弹簧是一种新型的分布式电压控制方法,它致力于实现将新能源注入电网的功率波动转移到宽电压负载上,使需求侧与供给侧的能量相匹配,提高分布式光伏系统对新能源的消纳能力。文章首先对电力弹簧的结构和工作原理进行了说明,然后在Matlab/Simulink搭建了带电力弹簧的单相光伏并网系统仿真模型,在改变光伏系统并网有功功率条件下得出加入电力弹簧和未加电力弹簧时馈线上的电压波形。仿真结果表明,该电压控制方法可以有效稳定馈线上的电压。The characteristics of distributed photovoltaic system are intermittent and unstable,which will have a great influence on the voltage of the power system. The use of Electric Springs is a novel way of distributed voltage control. The purpose of ES is to transfer the power fluctuations of new energy injected into the power grid to a wide-voltage load, so that the demand side and supply side of the energy can match to improve the new energy consumption capacity of the distributed photovoltaic system. This paper builds a simulation model in Matlab/Simulink and changes the output power of the PV system to get the voltage waveform of the feeder line with electric spring and without electric spring. The simulation results show that this voltage control method can stabilize the voltage on the feeder effectively.

关 键 词：电力弹簧 需求侧管理 电压控制 分布式光伏系统 

分 类 号：TK51[动力工程及工程热物理—热能工程] TM71[电气工程—电力系统及自动化]