CAJ | 학술논문

风电机组的合理建模及等值是研究风电场对电网影响的关键.本文分析了异步风电机组的数学模型,研究了发电机等值模型参数的求解方法,考虑尾流效应计算了等值机的等值风速.以PSCAD/EMTDC为平台,构建了基于恒速异步发电机的风电场并网仿真模型.仿真研究了风电场的稳态运行特性及联络线路故障、频率变化、电压跌落等情况下的有功、无功、电压动态变化曲线,验证了等值方法的有效性和正确性.
풍전궤조적합리건모급등치시연구풍전장대전망영향적관건.본문분석료이보풍전궤조적수학모형,연구료발전궤등치모형삼수적구해방법,고필미류효응계산료등치궤적등치풍속.이PSCAD/EMTDC위평태,구건료기우항속이보발전궤적풍전장병망방진모형.방진연구료풍전장적은태운행특성급련락선로고장、빈솔변화、전압질락등정황하적유공、무공、전압동태변화곡선,험증료등치방법적유효성화정학성.
The reasonable model and equivalent of wind generators play a critical role in researching the impact on power system of wind farm. In this paper, the math model of asynchronous wind turbine is analyzed, the solve method of equivalent wind generators parameters is studied, then the equivalent wind speed is calculated by Jensen model. Taking PSCAD/EMTDC as a platform, the simulation model of induction generators wind farms was established, the different circumstances being earth fault occurred in tie-line, frequency, voltage drop, simulation analyzed dynamic characteristics of wind farm bus active power, reactive power, voltage, the results shows validity and correctness of the equivalent methods.