摘要
随着我国风力发电行业的不断发展,基于模块化多电平换流器的柔性直流输电(Modular Multilevel Converter based High Voltage Direct Current,MMC-HVDC)技术也变得更加成熟。该技术具备谐波含量较低、功率损耗少、故障解决容易等特征,目前在我国双馈风电场并网工程中的使用率非常高。然而,在风电并网实际运行过程中,依旧存在次同步振荡状况,不利于风电并网的稳定运行。为了有效解决风力发电并网运行中出现的稳定性问题,对双馈风力发电场并网系统的次同步振荡机理展开研究,并就MMC-HVDC并网系统的次同步振荡特性进行了分析,在此基础上提出了风力发电并网运行的次同步振荡抑制策略,旨在进一步提升风力发电并网运行的稳定性,推动我国风力发电事业的高速发展。
With the continuous development of China's wind power industry,Modular Multilevel Converter based High Voltage Direct Current(MMC-HVDC)China's technology has also become more mature.This technology has the characteristics of low harmonic content,low power loss,and easy troubleshooting.At present,the utilization rate of doubly-fed wind farms in China's grid-connected projects is very high.However,in the actual operation of wind power grid connection,there still exists a subsynchronous oscillation condition,which is not conducive to the stable operation of wind power grid connection.In order to effectively solve the stability problems in the grid-connected operation of wind power generation,the sub synchronous oscillation mechanism of the grid-connected system of doubly-fed wind farms was studied,and the sub synchronous oscillation characteristics of the MMC-HVDC grid-connected system were analyzed.On this basis,a subsynchronous oscillation suppression strategy for grid-connected wind power generation is proposed,which aims to further improve the stability of grid-connected wind power generation and promote the rapid development of wind power generation in my country.
作者
张荣训
ZHANG Rongxun(Longyuan Guizhou Wind Power Generation Co.,Ltd.,Guiyang 550002,China)
出处
《通信电源技术》
2021年第18期9-11,共3页
Telecom Power Technology
关键词
风力发电
并网运行
稳定性
次同步振荡
wind power generation
grid connected operation
stability
subsynchronous oscillation
