构网型光伏自同步电压源控制策略研究  

Research on the Control Strategies of Grid-forming Photovoltaic Self-synchronizingg Voltage Source

作　　者：黄全全 王伟 邓小君[1,2] 赵建华 HUANG Quan-quan;WANG Wei;DENG Xiao-jun;ZHAO Jian-hua(Nanjing NARI Group Co.,Ltd.,Nanjing 211106,China;不详)

机构地区：[1]南瑞集团有限公司(国网电力科学研究院),江苏南京211106 [2]国电南瑞科技股份有限公司,江苏南京211106 [3]国网冀北张家口风光储输新能源有限公司,河北张家口075002

出　　处：《电力电子技术》2023年第4期87-90,共4页Power Electronics

基　　金：2022年度江苏省碳达峰碳中和科技创新专项资金重点项目(BE2022003);国电南瑞科技股份有限公司科技项目(524608210261)。

摘　　要：为提升光伏发电并网适应性以及在极弱电网工况下的频率电压支撑能力,提出并研究了一种构网型光伏自同步电压源控制策略,阐述了其基本工作原理,给出了其关键控制方程、工作模式及切换逻辑。所提构网型光伏自同步电压源逆变器不仅可向电网提供必要的频率及电压支撑,并可在电网发生故障时,具备独立向关键负载供电的构网能力。最后通过搭建的500 kW构网型光伏自同步电压源硬件在环实验平台充分验证了所提控制策略的有效性和正确性。In order to improve the grid-connected adaptability of the photovoltaic power generation system and the frequency and voltage support capability under extremely weak grid conditions,a control strategies of grid-forming photovoltaic self-synchronizing voltage source is proposed and studied.The basic working principle is expounded,and the key control equation,working modes and switching logic are given.The proposed grid-forming photovoltaic self-synchronizing voltage source inverter can not only provide necessary frequency and voltage support to the grid,but also have the grid-forming ability to independently supply power to key loads when the grid fails.Finally,the validity and correctness of the proposed control strategy are fully verified by the hardware-in-the-loop experiment platform of 500 kW grid-forming photovoltaic self-synchronizing voltage source.

关 键 词：自同步电压源 构网 控制策略 

分 类 号：TM76[电气工程—电力系统及自动化]