CAJ | 학술논문

在风力发电配电网继电保护的设计中,研究装设静止无功补偿器( SVC)后双馈风电机组( DFIG)对配电网原有保护问题,利用RTDS搭建了含SVC型DFIG实时暂态模型。仿真分析了配电网不同短路点故障时,含SVC型DFIG对配电网暂态电流特性的影响。结果表明：在电网侧故障后,SVC将增强DFIG对系统暂态电流的助增(或分流)作用,进一步增大(或减小)配电网原有保护的范围及灵敏度。
재풍력발전배전망계전보호적설계중,연구장설정지무공보상기( SVC)후쌍궤풍전궤조( DFIG)대배전망원유보호문제,이용RTDS탑건료함SVC형DFIG실시잠태모형。방진분석료배전망불동단로점고장시,함SVC형DFIG대배전망잠태전류특성적영향。결과표명：재전망측고장후,SVC장증강DFIG대계통잠태전류적조증(혹분류)작용,진일보증대(혹감소)배전망원유보호적범위급령민도。
Study impact on the original protection of distribution network after the DFIG is equipped with SVC. A real-time transient model of DFIG with SVC has been built by using RTDS. Utilize RTDS to simulate and analyze the impact of DFIG ( containing SVC) on the character of distribution network transient current when different short dots of the distribution network fail. The result indicates that when the power grid fails, SVC will strengthen DFIG's assis-ting ( or shunt) function, and further enlarge ( or downsize) the scope and sensitivity of the distribution network's o-riginal protection.