适应电网侧AGC不同控制模式的光伏发电参与电网频率调节  

Photovoltaic generation takes part in grid frequency regulation with different grid-side AGC control modes

作　　者：段正阳 李冰 黄珣 陈鑫 耿晓超 张善峰 严干贵[2] Duan Zhengyang;Li Bing;Huang Xun;Chen Xin;Geng Xiaochao;Zhang Shanfeng;Yan Gangui(State Grid Jibei Electric Power Company Limited Engineering Management Company,Beijing 100070,China;School of Electrical Engineering,Northeast Electric Power University,Jilin 132012,China)

机构地区：[1]冀北电力有限公司工程管理分公司,北京100070 [2]东北电力大学电气工程学院,吉林吉林13201

出　　处：《可再生能源》2020年第3期373-379,共7页Renewable Energy Resources

基　　金：国家自然科学基金资助项目(51277024);国家电网公司总部科技项目资助(光伏电站秒级功率扰动的频率和电压主动控制技术研究)

摘　　要：大规模光伏发电并网致使电力系统面临惯量减小与调频能力不足。文章在备用一定有功功率的基础上,提出有功功率-频率下垂控制策略,通过修正逆变器的原有控制结构,实现光伏发电主动参与电网频率一次调节。考虑一次频率调节偏移与越界等问题,提出自适应电网侧AGC不同控制模式(定频率控制模式、定联络线功率控制模式以及联络线功率频率偏差控制模式)的二次频率调节控制策略,进而实现频率的无差调节。最后,基于PSCAD/EMTDC仿真平台验证了控制策略的有效性与可行性。Large-scale grid-connection of photovoltaic(PV) generation causes the power system to face the problem of insufficient inertia and insufficient frequency modulation capability. One of the important means to solve this problem is to take part in grid frequency regulation actively. This paper proposes the active power-frequency droop control strategy on the basis of reserve certain active power.By modifying the original control structure of the inverter, PV generation actively takes part in the grid frequency primary regulation. Considering the problems of primary frequency regulation deviation and boundary violation, a secondary frequency regulation control strategy that adapts to different grid-side AGC control modes(constant frequency control mode, constant tie line power control mode and tie line power frequency deviation control mode) is proposed, so as to realize the zero error regulation.The effectiveness and feasibility of the control strategies are verified based on the PSCAD/EMTDC simulation platform.

关 键 词：光伏发电 AGC 一次调频 二次调频 

分 类 号：TK51[动力工程及工程热物理—热能工程]