| In recent years,the wind power industry has developed rapidly,and wind power grid connection has also gradually increased.Due to large fluctuations in wind power output,insufficient peak-shaving capacity,and constraints on the speed of network construction,wind farms have caused severe wind Curtailment,and how to make rational use of wind resources.Dispelling the wind and dispelling it has become an issue that people gradually pay attention to.In addition,the tower hoist equipped on each fan can guarantee the life safety of the maintenance personnel when performing maintenance and repair work,and can also improve the efficiency of the wind turbine maintenance.However,the frequent operation of the tower hoist will inevitably cause a lot of energy consumption.For the two aspects of appeal,this paper proposes the use of wind Curtailment for the operation of tower hoist,in order to solve the problem of wind Curtailment can not meet the tower hoist operation energy consumption,and at the same time for the tower hoist installed compensation power storage system,In many cases,the tower hoist is directly powered by wind Curtailment,and part of the wind power is stored in the energy storage system.In the case of no wind power,the energy storage system is used to compensate the tower hoist operation.Firstly,the reasons for the wind Curtailment were analyzed and related methods for the calculation of the wind Curtailment were introduced.In this paper,the longitudinal time series analysis method is used to statistically calculate the probability of wind power discontinuity at each time of a wind farm in Dabancheng,Xinjiang,and the wind power output of the wind farm during the work period is further counted.The wind power is discarded by the weighted average method.Estimation is used to analyze the situation of wind power discharge during the work hours of wind farms,which lays the foundation and reference for the subsequent research on abandoned wind utilization.Secondly,the advantages of installing the tower hoist are analyzed,and the characteristics of the three climbing modes of artificial climbing,booster climbing and tower hoist are compared,highlighting the advantages of the tower hoist compared to the other two lifting modes.In order to calculate the energy consumption of the tower hoist,the energy consumption of the tower hoist is modeled,and the energy consumption of the tower hoist is calculated by using the Newton’s second law and the calculation method of the power consumption of the lifting equipment of the DC or AC variable frequency electronic control system.Then,the expert survey method was used to evaluate the relationship between the maintenance period of wind turbines and the number of operation of tower hoists.Based on the evaluation results,the number of tower hoist operation operations of wind farms was counted and the number of operations in one day was estimated using probability statistics method.The consumption situation is quantified and the total energy consumption of the wind turbine using the tower hoist is calculated.Finally,the main energy supply method of wind Curtailment is used to provide energy for the inspection and operation of the tower hoist.Considering that the power of the wind Curtailment cannot meet the operation of the tower hoist,an energy storage system that needs to install compensation power for the tower hoist is required.It is proposed that the energy storage configuration cost is the lowest and the load shortage rate is the objective function,and the storage battery system mathematical model is based on the state of charge of the energy storage battery,charge and discharge power,and energy balance,and the NSGA-II multi-objective genetic algorithm is used.The optimal solution results in optimal configuration of energy storage.The optimization results provide reference for deploying an economical energy storage system for wind farms,and has important research significance for eliminating wind and dissipating... |
