基于组播的功率调节系统在光伏电站的应用-电力系统保护与控制.pdfVIP

第43 卷 第22 期 电力系统保护与控制 Vol.43 No.22 2015 年 11 月 16 日 Power System Protection and Control Nov. 16, 2015 基于组播的功率调节系统在光伏电站的应用 吴双惠，孔波利，崔丽艳，李现伟，丁 钊，沈志广 (许继电气股份有限公司，河南 许昌 461000) 摘要：针对大容量光伏电站中逆变器数量较多时采用点对点的功率调节方式致使调节速度慢、调节时间长的问题， 提出了一种基于组播的功率调节系统。通过 UDP 组播一次性对全站逆变器下发遥调指令，以提高整个电站的调节 速度。详细介绍了功率调节控制系统的结构、控制模式及控制策略。在进行电压无功控制时充分利用逆变器的无 功容量替代 SVG 的功能，大大节约大型光伏电站的成本。该系统已在甘肃金昌振新 100 MWp 光伏电站中成功应 用，算例验证了所述方法的有效性。 关键词：组播；功率调节系统；光伏电站；控制策略；电压无功控制 Application of power conditioner system based on multicast in photovoltaic power station WU Shuanghui, KONG Boli, CUI Liyan, LI Xianwei , DING Zhao, SHEN Zhiguang (XJ Electric Co., Ltd., Xuchang 461000, China) Abstract: To solve the problems of slow regulative speed and long adjustment time by using peer-to-peer power regulation mode in high-capacity photovoltaic power station with numbers of inverters, a power conditioner system based on multicast is proposed, which sends the remote adjustment command to the inverters in the station at once by using UDP multicast to improve the regulative speed. The structure, control method and control strategy of the power conditioner system is introduced. It makes use of the reactive power of the inverters instead of the SVG in the voltage/reactive power control, which reduces the cost of large-scale photovoltaic power station effectively. The system has been successfully used in Jinchang Zhenxin 100 MWp photovoltaic power station in Gansu province and the method proposed is validated. Key words: multicast; power conditione