摘要
具备虚拟惯量的变速风电机组接入电网后,发电系统的暂态特性将因惯量可控而更加多样化.首先,基于两区域发电系统,根据双馈风机(DFIG)的暂态特性推导出风电场等值模型,理论分析双馈风机组成的大规模风电场附加虚拟惯性后对系统功角首摆的影响.其次,针对接纳风电后的两区域电网,利用扩展等面积定则分析了附加虚拟惯性的风电场接入两机系统后系统暂态功角稳定性的变化.最后,通过对风电高渗透率的四机两区域电网的仿真分析,验证该暂态稳定机理的正确性.
After the variable speed wind turbine with virtual inertia is connected to the power grid,the transient characteristics of the power generation system will be more diversified due to the inertia control.Firstly,based on the two-region power generation system,the equivalent model of wind farm is derived according to the transient characteristics of double-fed induction generator(DFIG),and the influence is theoretically analyzed on the first swing of power angle produced by the virtual inertia of the large-scale wind farm with DFIG access.Secondly,based on the extended equal area rule,the transient power angle stability of a wind farm with additional virtual in-ertia is analyzed.Finally,the correctness of the transient stability mechanism is verified by the simulation analysis of the four-machine two-region power grid with high permeability of wind power.
作者
曹博源
王爽
丁骎
CAO Boyuan;WANG Shuang;DING Qin(State Grid Shanghai Electric Power Research Institute,SMEPC,Shanghai 200437,China;State Grid Pudong Power Supply Company,SMEPC,Shanghai 200122,China)
出处
《电力与能源》
2023年第5期490-495,共6页
Power & Energy
关键词
双馈风机
暂态功角稳定
惯性控制
扩展等面积定则
doubly-fed induction generator(DFIG)
transient power angle stability
inertial control
extended equalarearule
