交流励磁可变速抽蓄机组控制策略研究  

Research on Unit Control Strategy of AC Excitation Variable Speed Pump Storage Unit

作　　者：闫伟[1] 石祥建[1] 施一峰[1] 刘为群[1] 吴龙[1] 丁勇[1] YAN Wei;SHI Xiangjian;SHI Yifeng;LIU Weiqun;WU Long;DING Yong(NR Electric Co.,Ltd.,Nanjing 211102,China)

机构地区：[1]南京南瑞继保电气有限公司,南京211102

出　　处：《大电机技术》2020年第6期84-90,共7页Large Electric Machine and Hydraulic Turbine

基　　金：国网大型变速抽蓄机组关键技术自主化应用研究项目(521104180013)。

摘　　要：本文以交流励磁可变速机组安全稳定运行、对电网的有功调节快速响应、自动频率控制为目标,在给出机组整体控制模型的基础上,针对发电、抽水工况分别提出了几种机组控制策略,对其优缺点进行了分析研究,采用交流励磁控制装置+RTDS的实时数字仿真,对各种机组控制策略进行了对比研究。提出了既满足电网要求又考虑机组安全稳定运行的机组整体控制策略:发电工况采用交流励磁功率控制+转速限制控制、调速器最优转速控制的机组控制策略;抽水工况交流励磁采用转速优先的转速控制+功率控制、调速器最优导叶控制的机组控制策略。同时本文对交流励磁变速电机采用电压或无功控制方式进行了研究。Aiming at safe and stable operation of the unit,quick response to the active power adjustment of the power grid,and automatic frequency control,based on proposed unit overall control model,several unit control strategies were proposed for generating and pumping conditions with their advantages and disadvantages being analyzed and studied.Further comparative study of the strategies were done by using AC excitation control device+RTDS real-time digital simulation.The unit control strategy that meets the requirements of the grid and considers the safe and stable operation of the unit is proposed:AC excitation's power control+speed limit control and governor's optimal speed control for generating condition,AC excitation's speed control+power control with speed-control priority and governor's optimal guide vane control for pumping condition.Voltage or reactive power control for AC excitation variable speed unit was also discussed.

关 键 词：交流励磁可变速抽蓄机组 机组控制 快速功率控制 转速控制优先 有功控制优先 

分 类 号：TM301.2[电气工程—电机]