基于SIMULINK的失速型风电机组软并网控制系统的仿真分析

SIMULATION AND ANALYSIS BASED ON SIMULINK OF SOFT CUTIN SYSTEM OF STALLREGULATED WIND TURBINE GENERATORS

软并网控制技术是失速型风电机组电控系统的关键技术之一。该文分析了利用晶闸管进行软并网的原理,建立了机组并网的SIMULINK仿真模型,在对仿真模型进行验证的基础上,对各种并网过程进行了仿真,提出了机组并网转速与晶闸管移相触发规律应随电机转子加速度调节的控制策略,为失速型风电机组软并网系统的研制提供了必要的参考依据。

Soft cut-in control technology is one of the key technologies of the electrical control system of stall-regulated grid-connected wind turbine generator (WTG). The principle of soft cut-in system using thyristors was analyzed and the Simulink simulation model of cut-in process of wind turbine unit was established. On the basis of the simulation model, the simulation and analysis of all kinds of cut-in process of WTG are carried out. An effective control strategy of soft cut-in system that the cut-in rotating speed of WTG and thyristor phase-shifting rule adjusted in accordance with the rotating acceleration of rotor is put forward, which supplies necessary referential material for the R and D of soft cut-in unit of stall-regulated WTG.