Design Of State Monitoring System For Wind Turbine Based On Finite State Machine

In recent years,with the rapid development of wind power,the state monitoring system as an important part of wind power generation has irreplaceable important position.However,due to the complex structure of the wind power generation system,complex and varied working conditions,coupled with the wind turbine poor working states and the shortcomings of the current manufacturing process,resulting in difficult state monitoring system modeling,the corresponding status monitoring effect is not ideal.The traditional method of mathematical modeling using the input-output relationship of mathematical equations to describe the characteristics of the system,but hides its physical nature,cannot reach the desired results.The new modeling methods,such as neural networks,Markov and other applications is not widely used in the field of wind power.To solve this problem,this article will be event-driven control theory of finite state machine method applied to wind turbine state monitoring system modeling.By analyzing the operating logical process of the wind turbine subsystems,the potential work states,operational parameters and state transition states of wind turbine are stripped and corresponded to the basic parameters of the unit according to the event-driven fundamental principles.Based on the modeling way of finite state machine(FSM),the various parts of monitor subsystems of FSM are built according to the mapping relationship between the operational elements by stripped separately.Each monitor subsystem of FSM run separately in parallel way,and its’ relations are coordinated by the instructions that the main control system sends.The occurrence of events is triggered by the changes of real-time parameters,and triggering event activates the corresponding state transition to simulate objective operational process of the wind turbine.Each part is linked closely and runs according to the operating logic in turn.The operating states of unit could be known by monitoring operating states of FSM.Finally,in monitoring the finite state machine to access the required basic parameters of fan can begin the simulation verification.Based on the state-flow module of MATLAB software,the model of FSM is built in this paper.Simulation results show: wind turbine state monitoring system based on FSM,whichcould reflect the changes of operating conditions of unit,and the system owns excellent reliability,and the desired goal is got.The block-oriented modeling method,visible model and convenient simulation of state-flow module,which could reflect the complicated and varied logical relations accurately and concisely,can sort and simplify the system structure,as well as improve the efficiency of modeling and readability of program.