CAJ | 학술논문

研究了含异步机风电场的配电网发生故障时,风电场提供的短路电流特性.从理论上推导了含风电的配电网故障电流关系式,并结合风电场提供的短路电流特性对其特点进行了分析.以PSCAD为平台,构建了典型含风电的配电网仿真模型,在分析故障电流计算式的基础上,仿真研究了风电场接入位置、风电场容量及故障点对配电网故障电流和对保护的影响.研究表明,风电接入配网将影响配网保护的动作特性;风电场容量、接入位置、故障点不同,对保护的影响也不同.
연구료함이보궤풍전장적배전망발생고장시,풍전장제공적단로전류특성.종이론상추도료함풍전적배전망고장전류관계식,병결합풍전장제공적단로전류특성대기특점진행료분석.이PSCAD위평태,구건료전형함풍전적배전망방진모형,재분석고장전류계산식적기출상,방진연구료풍전장접입위치、풍전장용량급고장점대배전망고장전류화대보호적영향.연구표명,풍전접입배망장영향배망보호적동작특성;풍전장용량、접입위치、고장점불동,대보호적영향야불동.
@@@@The characteristics of short-circuit current offered by asynchronous wind farm connected with distribution network during the faults occurred in the distribution network are researched. The relational expression of fault current in the distribution network containing wind farm is derived theoretically, and combining with the characteristics of short-circuit current offered by the wind farm the features of the fault current in distribution network are analyzed. A simulation model of typical distribution network containing wind farm is built on the platform of PSCAD/EMTDC, and based on analysis on calculation formula of fault current the impacts of the capacity of wind farm, its network-connected position and fault point on fault current in distribution network and protective relaying are researched by the built model. Research results show that the action performances of protective relayings for distribution network are impacted by the connection of wind farm with distribution network; impacts of wind power capacity, its network-connected position and different fault points on protective relaying differ from one another.