摘要
变速抽蓄机组作为重要调节电源,在系统功率平衡、频率调节方面发挥重要作用,同时变速抽蓄机组双馈发电电动机运行可靠性越来越受到人们的重视。因此,本文提出了应对双馈发电电动机速度传感器故障的容错控制策略,以增强变速抽蓄机组的运行可靠性。该策略利用定子磁链模型参考自适应估算转速,并与光码盘实测转速相比较,而后通过滞环、SR触发器构成速度传感器故障检测与隔离,完成速度传感器故障情形下双馈发电电动机转速信号的主动切换,保障双馈发电电动机不间断运行。最后,通过MATLAB仿真,验证所提容错控制策略的有效性。
As the adjustable source in the power system,the variable-speed pumped storage unit(VSPSU)plays an important role in the power balance,frequency regulation,and so on.Meanwhile,this put forwards the high-reliability requirements of the VSPSU-used doubly fed induction machine.Thus,in order to deal with the speed sensor fault,the speed sensor fault-tolerant control of the doubly fed generator motor is developed for the reliability enhancement.In this strategy,the estimated rotor speed is obtained based on the model reference adaptive method and then used as the redundancy of the measured one by the ABZ signals of the encoder.Together with the hysteresis and the SR flip-flop,the flip-flop logic-based detection and isolation of the speed sensor fault is designed.By this means,the uninterrupted operation of the doubly fed generator motor during speed sensor faults can be achieved.Finally,based on MATLAB simulation,the effectiveness of the proposed speed sensor fault-tolerant control is validated.
作者
刘金栋
宋兆新
马征
赵福万
卢毅
孙士涛
LIU Jindong;SONG Zhaoxin;MA Zheng;ZHAO Fuwan;LU Yi;SUN Shitao(Hebei Fengning Pumped Storage Energy Co.,Ltd.,Chengde 068350,China;North China Electric Power Research Institute Co.,Ltd.,Beijing 100045,China)
出处
《大电机技术》
2024年第6期13-20,共8页
Large Electric Machine and Hydraulic Turbine
基金
国网新源集团有限公司科技项目(SGXYKJ-2022-067)。
关键词
变速抽蓄机组
双馈发电电动机
速度传感器
容错控制
variable-speed pumped storage unit
doubly fed generator motor
speed sensor
faulttolerant control
