双馈风机故障穿越后功率恢复速率对系统暂态稳定的影响分析  

Analysis on the Impact of Post-fault Power Recovery Speed of Doubly-fed Induction Generators on Power System Transient Stability

作　　者：于珍 沈沉[1] 张雪敏[1] YU Zhen;SHEN Chen;ZHANG Xuemin(State Key Lab of Control and Simulation of Power Systems and Generation Equipments（Dept.of Electrical Engineering,Tsinghua University）,Haidian District,Beijing 100084,China)

机构地区：[1]电力系统及发电设备控制和仿真国家重点实验室(清华大学电机系)

出　　处：《中国电机工程学报》2018年第13期3781-3791,共11页Proceedings of the CSEE

基　　金：国家自然科学基金项目(51321005);国家重点基础研究发展计划项目(973计划)(2013CB228201)~~

摘　　要：双馈型风力发电机在已建风电场中占据较大比例,研究大规模双馈型风电机组集中并网对系统暂态稳定性的影响具有重要意义。该文以功率注入模型描述风机动态行为,考虑故障清除后风机以不同速率恢复有功功率,研究风机接入对系统暂态稳定性影响的判据;在此基础上进一步研究风机不同功率恢复速率对系统暂态稳定性影响的程度;最后通过仿真验证了以上理论分析的正确性。As doubly-fed induction generators occupy a large proportion of wind farms, it is very important to study the impact of centralized integration of large-scale doubly-fed induction generators on the transient stability of power system. The power injection model was used to describe the dynamic behavior of wind generator in this paper. Considering post-fault active power of wind generators recover at different speeds, we studied the criterion which can judge the impact of wind generator integration on the power system transient stability. On this basis, when post-fault wind power recovery speed changes, how the impact of wind generator integration on transient stability changes was analyzed. Finally, the correctness of the above theoretical analysis was verified by simulation.

关 键 词：双馈风机 暂态稳定 故障清除后功率恢复速率 影响判据 

分 类 号：TM71[电气工程—电力系统及自动化]