CAJ | 학술논문

为减小电动汽车换电站V2G运行给配电网保护和自动化配置带来的影响，首先分析了换电站V2G运行对基于馈线终端单元(feeder terminal unit，FTU)的馈线自动化和重合器熔断器配合的馈线自动化故障处理过程的影响，然后根据造成影响的根本原因提出了换电站主动控制策略。该策略由2部分组成，一为换电站在架空线路和电缆线路配电网中的故障判别与应对策略，二为配电网故障情况下换电站中所有充放电机的协调控制策略。基于 PSCAD 软件搭建了馈线自动化仿真模型，并仿真分析了换电站采用主动控制策略时对馈线自动化的影响。结果表明，换电站主动控制策略有效减小了配电网故障期间换电站的输出电流，解决了基于FTU的馈线自动化系统中重合器重合闸失败和故障区域判断错误问题，以及重合器熔断器配合的馈线自动化系统中配合失效的问题，且在各种故障情况下控制特性较好。
위감소전동기차환전참V2G운행급배전망보호화자동화배치대래적영향，수선분석료환전참V2G운행대기우궤선종단단원(feeder terminal unit，FTU)적궤선자동화화중합기용단기배합적궤선자동화고장처리과정적영향，연후근거조성영향적근본원인제출료환전참주동공제책략。해책략유2부분조성，일위환전참재가공선로화전람선로배전망중적고장판별여응대책략，이위배전망고장정황하환전참중소유충방전궤적협조공제책략。기우 PSCAD 연건탑건료궤선자동화방진모형，병방진분석료환전참채용주동공제책략시대궤선자동화적영향。결과표명，환전참주동공제책략유효감소료배전망고장기간환전참적수출전류，해결료기우FTU적궤선자동화계통중중합기중합갑실패화고장구역판단착오문제，이급중합기용단기배합적궤선자동화계통중배합실효적문제，차재각충고장정황하공제특성교호。
To mitigate the impact of vehicle to grid (V2G) operation of battery swap station (BSS) on protection and automation devices for distribution network, firstly the impacts of V2G operation of BSS on feeder terminal units (FTU) based feeder automation and recloser-fuse coordination based feeder automation fault processing process are analyzed;then according to the basic reason causing the impacts an active control strategy for BSS is proposed. The active control strategy contains two parts:one is the strategy for BSS to distinguish and cope with the fault occurred in distribution network composed of overhead line and cable line, and the other is the coordinated control strategy for all chargers/dischargers in the BSS under distribution network fault. Based on PSCAD software a simulation model of feeder automation is constructed, and the impacts of BSS adopting the proposed active control strategy on feeder automation are simulated. Simulation results show that using the proposed active control strategy for BSS the output current of BSS during distribution network fault can be effectively reduced, thus the troubles of reclosure failure of the recloser in FTU based feeder automation system and the misjudgment of faulty section as well as the coordination failure in recloser-fuse coordination based feeder automation system can be solved, besides, the proposed control strategy possesses better control performance under various distribution network faults.