Simulation Study Of Full Control Of Wind Turbine System Under Fault Condition

In recent years,energy crisis and changes of the environment promote the exploration and use of renewable energy,the wind power is the new energy which has the most development prospect,it fundamentally solved the problem of the energy shortage of our country,then wind power market expand rapidly,and the influence on the stability of power grid are increasingly apparent.However,there are many potential faults in large wind turbine,once failure,it will lead the whole unit to be down and checked,some device depleted need to be replaced,maybe even a complete scrap which brings huge economic losses and casualties.In order to achieve the simulation study of full control of wind turbine system under fault condition,analyze the relationship between different fault and the control strategy after failure occur.This article use virtual instrument software(Lab VIEW2011)to realize the simulation study of doubly-fed wind power generator under fault condition.Firstly,it introduce the operating model of the whole set,list 28 potential fault.using Lab VIEW2011 simulation software to achieve modeling of the doubly-fed wind power generators and then we put fault into the simulation,including low voltage ride through,grid voltage fault,grid frequency transfinite,and impeller speed fault.Then the article make a detailed analysis of the influence to some parameters,Identify whether halt or not according to the fault location and severity.Secondly,this paper introduces the difference and process of the Wind turbines stop,respectively,the normal stop,fast stop,emergency stop,then introduce their process and difference.Lastly,design the fault simulation interface including all faults.Adopting wind turbine simulation technology research,the conclusion is closer to the actual result,and greatly simplify the development process,on the one hand,reduced the cost of manufacturing and installation of wind turbines,on the other hand,reduced the operational cost,at the same time verified the correctness of the doubly-fed wind power system simulation platform.