基于混合储能的VSC-HVDC在风电功率平衡中的研究  

Research on VSC-HVDC Based on Mixed Energy Storage in Wind Power Balance

作　　者：王俊 陈堂贤[1] 王雅琪 周旖辉 陈聪[1] WANG Jun;CHEN Tangxian;WANG Yaqi;ZHOU Huanhui;CHEN Cong(School of Electrical and New Energy,China Three Gorges University,Yichang,Hubei 443002,China;Maintenance Company,State Grid Hubei Electric Power Co.,Ltd.,Wuhan 430050,China)

机构地区：[1]三峡大学电气与新能源学院,湖北宜昌443002 [2]国网湖北省电力有限公司检修公司,武汉430050

出　　处：《电工材料》2019年第5期21-25,共5页Electrical Engineering Materials

摘　　要：风能是一种间歇式的能源,大规模风电并网对电网的发展有重要意义,但对并网技术提出了更高的要求。根据柔性直流输电系统的数学模型,应用DC/DC变换器控制储能装置与电网系统功率的双向流动。送端换流站的解耦控制器实现了风电场输出功率的独立控制,受端换流站则采用储能装置充放电功率偏差值,以作为直流电压控制器附加信号的控制策略。在Matlab/Simulink平台对风电场经有源型柔性直流输电系统接入电网进行仿真分析,结果表明该方案能保持受端交流母线功率稳定。Wind energy is a kind of intermittent energy.Large-scale wind power Grid-connected is of great significance to the development of power grid,which puts forward higher requirements for grid-connected technology.According to the mathematical model of flexible HVDC transmission system,DC/DC converter is used to control the bidirectional flow of power between energy storage device and power grid system.The decoupling controller of the sender converter station realizes the independent control of the output power of wind farm,while the receiver converter station uses the deviation of charging and discharging power of the energy storage device as the additional signal control strategy of the DC voltage controller.The simulation analysis of wind farm connected to power grid via active flexible HVDC transmission system is carried out on Matlab/Simulink platform.The results show that the scheme can maintain the power stability of the receiving AC bus.

关 键 词：混合储能 VSC-HVDC 风电并网 功率平衡 

分 类 号：TM74[电气工程—电力系统及自动化]