摘要
针对一种18相风力发电系统的绕组结构特点,对多相风机的故障工况进行了分析,多相电机系统可能出现的故障可以直接看作开路故障,等效为电机的缺相运行。通过分析机侧、网侧能量传输机理,对系统中绕组开路及变流模块故障后的三相不控整流器的输出电流参考值进行重新整定,提出相应的容错控制方法。最后,通过仿真对变流模块故障的电流重分配控制策略及直流短路故障控制策略的有效性进行了验证。
Based on the winding structure characteristics of an 18 phase wind power generation system,the fault conditions of a multi-phase wind turbine are analyzed.The faults that may occur in the multi-phase motor system can be directly regarded as open circuit faults,equivalent to the phase loss operation of the motor.By analyzing the mechanism of energy transmission on the grid side and the machine side,the reference value of the output current of the three-phase uncontrolled rectifier after winding open circuit and converter module fault in the system has been readjusted,and corresponding fault-tolerant control methods have been proposed.Finally,the effectiveness of the current redistribution control strategy for converter module faults and the DC short circuit fault control strategy is verified through simulation.
作者
周诗嘉
黄守道
荣飞
杨光源
辛清明
ZHOU Shijia;HUANG Shoudao;RONG Fei;YANG Guangyuan;XIN Qingming(China Southern Power Grid Research Institute Co.,Ltd.,Guangzhou 510080,China;College of Electrical and Information Engineering,Hunan University,Changsha 410082,China;Maintenance&Test Center of China southern power grid EHV Power Transmission Company,Guangzhou 510663,China)
出处
《湖南电力》
2023年第5期116-120,共5页
Hunan Electric Power
基金
湖南省自然科学基金项目(2021JJ30120)
南方电网科技项目(ZBKJXM20180560)。
关键词
容错控制策略
多相风机
缺相故障
电机故障
fault-tolerant control strategy
multi-phase wind turbine
phase loss fault
wind power generator fault