摘要
为了研究定子绕组匝间短路(SWITSC)故障对双馈风力发电机组高压穿越的影响,基于多回路理论建立了计及定子绕组匝间短路故障的双馈感应发电机(DFIG)仿真模型,并在MATLAB/Simulink下建立了其S-函数。依据短路故障回路特性,分别在SWITSC前后建立了DFIG风电机组的ABC坐标系统和dq0坐标系统下的数学模型,并简要分析了SWITSC故障下的电磁特性。对双馈风电机组的高压穿越能力做出分析,分析了风电场电压升高的原因、高压穿越的标准及双馈风机在电网电压骤升下的暂态过程。重点研究了DFIG在SWITSC故障前后高压穿越的仿真结果。结果表明,定子绕组匝间短路故障会严重降低风电场的高压穿越的能力。
In order to study the effect of high voltage ride through （HVRT） of doubly-fed wind power system under sator winding inter-turn short circuit （SWITSC） faulty condition, based on the multi loop theory, a simulation mode of doubly fed induction generator under SW/TSC faulty condition was established, the S-function in the MATLAB/Simtdink was established. On the basis of fault loop characteristics, mathematical model of DFIG wind turbine on ABC coordinate system and dq0 coordinate system were established under normal and fault condition, and the electromagnetic character- istics was analyzed briefly under SWITSC fault, then the capability of high voltage ride through of DFIG was analyzed, the reason and the transient process of wind farm voltage rise were analyzed. The standard of high voltage ride through was provided. Focused on the simulation results of HVRT of DFIG under SWITSC faulty condition, the explanation was given. The results showed that SWITSC faulty destroyed capability of HVRT of DFIG to a great extent.
出处
《电机与控制应用》
北大核心
2017年第5期108-115,127,共9页
Electric machines & control application
关键词
双馈感应发电机
定子绕组匝间短路
高压穿越
仿真
doubly-fed induction generator （DFIG）
stator winding inter-turn short circuit （SWITSC）
high voltage ride through （HVRT）
simulation
