CAJ | 학술논문

规模化风电集中接入电网,将对系统提供一定的短路电流,影响设备选型、升压站中低压侧的运行方式等.通过对不同风电机组型号(双馈式和直驱式)及不同容量的单个风电机组对系统提供的短路电流分析,根据风电机组短路PMU录波曲线和风电机组模型短路仿真曲线,提出了一种工程计算方法,计算出不同型号和不同容量的风电机组等值次暂态电抗,并结合短路电流理论计算模型,分析单个风电场以及风电汇集站对系统提供的短路电流,结果表明,规模化风电的集中接入,对系统提供的短路电流不可忽略.
규모화풍전집중접입전망,장대계통제공일정적단로전류,영향설비선형、승압참중저압측적운행방식등.통과대불동풍전궤조형호(쌍궤식화직구식)급불동용량적단개풍전궤조대계통제공적단로전류분석,근거풍전궤조단로PMU록파곡선화풍전궤조모형단로방진곡선,제출료일충공정계산방법,계산출불동형호화불동용량적풍전궤조등치차잠태전항,병결합단로전류이론계산모형,분석단개풍전장이급풍전회집참대계통제공적단로전류,결과표명,규모화풍전적집중접입,대계통제공적단로전류불가홀략.
Large-scale wind power centralized access to the power grid caused many problems, such as short-circuit current, equipment selec-tion and mode of operation at middle and low voltage side in booster station etc. Through the different wind turbine generator models (dual-fed and direct drive) and single wind turbine generator of different capacity, this paper analyzed the system short-circuit current. Based on wind tur-bines short-circuit PMU recorded wave curve and wind turbine generator model short-circuit simulation curve, this paper proposed an engineer-ing calculation method to calculate the different models and capacity wind turbine generator equivalent subtransient reactance. Combining with the theoretical calculation model of short-circuit current, this paper analyzed the system short-circuit current provided by the single wind farm and wind power centralized station. The result shows that the large-scale wind power centralized access provides the un-neglected short-circuit current for the system.