CAJ | 학술논문

近年来大量风电场的并网给电网安全运行带来困难，为此电网调度部门对所辖风电场提出了严格的限发要求。变速风电机组需要从传统的最大风能利用运行模式向限功率运行模式转变，由于风力机功率特性具有强非线性，运行模式的改变对风电机组以及风电场的控制策略提出了更高的设计要求。提出了一种考虑风电机组限功率运行状态优化的风电场功率调度策略。首先，基于小扰动分析方法分析了限功率运行下风电机组非线性模型的稳定特性；然后，提出了一种限功率运行状态评价指标；接下来，建立了风电场功率调度多目标优化模型，并基于遗传算法设计了求解策略。最后，结合实际算例验证了所提调度策略的有效性。
근년래대량풍전장적병망급전망안전운행대래곤난，위차전망조도부문대소할풍전장제출료엄격적한발요구。변속풍전궤조수요종전통적최대풍능이용운행모식향한공솔운행모식전변，유우풍력궤공솔특성구유강비선성，운행모식적개변대풍전궤조이급풍전장적공제책략제출료경고적설계요구。제출료일충고필풍전궤조한공솔운행상태우화적풍전장공솔조도책략。수선，기우소우동분석방법분석료한공솔운행하풍전궤조비선성모형적은정특성；연후，제출료일충한공솔운행상태평개지표；접하래，건립료풍전장공솔조도다목표우화모형，병기우유전산법설계료구해책략。최후，결합실제산례험증료소제조도책략적유효성。
In recent years,a large number of wind farms have been connected to grid which causes difficulty in maintaining secure grid operations,consequently,the dispatch centers often need to require the wind farms to limit their power output strictly.As a result,the operating mode of wind turbines and wind farm needs to be transferred from traditional maximum wind energy tracking to power limited operating conditions. However,given the strong nonlinear characteristics of the turbines,changing operating mode requires more complex control strategies for both the wind turbines and wind farms.A wind farm power optimum dispatching strategy,considering the wind turbine power limited operation conditions,is proposed.A small disturbance analysis method is adopted to analyze the stability for power limited operations.An assessment index is presented to evaluate the operating modes.A multi-objective optimization model is established using genetic algorithms. Numerical examples are given to validate the efficiency of the strategy proposed.