降低高电压风险的双馈风电机组低电压穿越参考功率整定  

Low Voltage Ride⁃through Reference Power Setting for Doubly⁃fed Induction Generator to Reduce High⁃voltage Risk

作　　者：郑晗 ZHENG Han(School of Electrical Engineering,Northeast Electric Power University,Jilin Jilin 132012,China)

机构地区：[1]东北电力大学电气工程学院,吉林吉林132012

出　　处：《电力电容器与无功补偿》2022年第4期161-168,共8页Power Capacitor & Reactive Power Compensation

基　　金：广东省自然科学基金项目(2021A1515012087);中国南方电网有限责任公司重点科技项目(090000KK52180116)。

摘　　要：传统LVRT期间参考功率整定方法多从有功功率整定角度考虑,对于无功功率整定研究较少。本文提出了一种DFIG在LVRT期间的参考功率整定方法。在电网电压发生跌落故障情况下,本整定方法在保证DFIG不发生超速脱网的条件下,对DFIG发出的无功功率进行整定,在加速机端电压快速恢复的同时,防止转子发生过电流事故。仿真表明,电网电压跌落故障期间,本文提出的参考功率整定方法在保证DFIG不发生超速脱网的前提下,加速机端电压恢复的同时,能够确保转子侧不发生过电流故障。最终仿真结果验证了本文所提参考功率整定方法的有效性和可行性。The traditional reference power setting method during LVRT is mostly considered from the perspective of active power setting,but the research on reactive power setting is less.In this paper,a reference power setting method for DFIG.during LVRT is proposed.In the case of grid voltage sags,this setting method sets the reactive power generated by DFIG.under the condition that DFIG.does not go off the grid over speed,so as to prevent the rotor from over⁃current accidents while the terminal voltage of the accelerator is quickly restored.The simulation shows that the reference power setting method proposed in this paper can ensure that the rotor side does not have over⁃current fault while the terminal voltage of the accelerator is restored under the premise that the DFIG.does not have over⁃speed off⁃grid fault.The final simulation results verify the effectiveness and feasibility of the proposed reference power setting method.

关 键 词：双馈感应风电机组 参考功率整定 低电压穿越 电压恢复 转子过电流 

分 类 号：TM315[电气工程—电机]