基于VSG的风光火打捆系统暂态稳定性分析  

Transient Stability Analysis of Wind-photovoltaic-thermal-bundled System Based on VSG

作　　者：戴尧 王睿 余明昊 宋立琴[4] DAI Yao;WANG Rui;YU Minghao;SONG Liqin(Tianjin Huadian Fuyuan Thermal Power Co.,Ltd.,Tianjin 301799,China;Wuqing power supply Branch of State Grid Tianjing Electrie Power Company,Tianjin 301700,China;Langfang Power Supply Company of State Grid Jibei Electric Power Co.,Ltd.,Langfang 065000,China;North China Electric Power University,Baoding 071003,China)

机构地区：[1]天津华电福源热电有限公司,天津301799 [2]国网天津市电力公司武清供电分公司,天津301700 [3]国网冀北电力有限公司廊坊供电公司,河北廊坊065000 [4]华北电力大学,河北保定071003

出　　处：《河北电力技术》2022年第6期36-40,共5页Hebei Electric Power

摘　　要：将风电、光伏与火电三者打捆外送能够有效解决我国能源逆地势分布的问题,而将虚拟同步机策略与风电、光伏机组结合,是解决新能源高比例并网造成的送端惯量缺失问题的有效方式。基于PSCAD仿真软件,搭建了风光火打捆外送系统的基础模型,在风电和光伏机组换流器中引入虚拟同步机策略,通过仿真验证了其对于提升系统送端惯量的有效性,然后结合仿真分析了转动惯量系数J和阻尼系数D对送端母线频率的影响,最后在打捆系统送端新能源机组VSG控制策略中引入了J系数自适应控制策略,通过仿真验证了其有效性。Bundling wind, photovoltaic(PV) and thermal power through long-distance channels can effectively solve the problem of energy distribution against topography in China.The combination of the virtual synchronous generator(VSG) strategy with photovoltaic units and wind power in the bundling system is an effective way to solve the problem of the lack of inertia at the sending end caused by the high proportion of new energy sources connected to the grid.Based on the PSCAD simulation software, the basic simulation model of the wind-photovoltaic-thermal-bundled delivery system was built.The VSG strategy was introduced into the converters of wind power and photovoltaic units, and the effectiveness of the VSG strategy in improving inertia was verified by simulation.Then, the influence of the rotational inertia parameter J and damping coefficient D in the VSG strategy on the transient stability of the frequency of the sending end bus of the baling system was analyzed.Finally, an adaptive control strategy of the rotational inertia parameter J is introduced into the VSG control strategy of the new energy unit at the sending end of the baling system, and its effectiveness was verified by simulation.

关 键 词：风光火打捆 暂态稳定性 虚拟同步机 转动惯量 

分 类 号：TM712[电气工程—电力系统及自动化]