摘要
对含高渗透率风电的送端电网系统暂态稳定性进行了研究。从理论上分析了变速恒频机组模型结构及其对电网暂态稳定性的影响;应用风电场短路试验的实测数据验证了仿真模型及仿真数据的准确性;仿真分析了不同运行方式、不同故障位置、火电与风电不同配比条件下对系统暂态稳定性的影响,提出了针对送端系统外送线路稳定水平的影响,风电出力的影响要小于火电机组,而针对送端电网内部火电厂出口线路的稳定水平主要取决于火电厂本身,而风电出力对其的影响还要受网架结构、运行方式等因素影响。
The transient stability of sending power gird containing high proportion of wind power is researched.The model structure of variable speed constant frequency（VSCF） unit and its impact on power grid transient stability are analyzed theoretically;using measured data of short-circuit experiment of wind farm the accuracy of simulation model of VSCF unit and that of simulation results are verified;the impacts of different operation modes,different positions where faults occur and the ratio of power generated by thermal plants to that generated by wind farm are analyzed and it is pointed out that as for the stability level of sending-out transmission line in sending power grid the impact of wind farm power output on its stability level is less than that of power generated by thermal plants,however the stability level of outgoing lines of thermal plants inside the sending power grid mainly depends on thermal plants themselves,and to analyze the impact of wind power output on stability level of outgoing lines of these thermal plants the impacts of such factors as grid structure and operation modes should be taken into account.
出处
《电网技术》
EI
CSCD
北大核心
2013年第3期740-745,共6页
Power System Technology
关键词
高渗透率风电
送端电网
暂态稳定性
仿真模型
high proportion of wind power
sending power grid
transient stability
simulation model
