CAJ | 학술논문

介绍了柔性直流输电系统控制和保护系统分层结构，对南澳多端柔性直流输电工程青澳站控制保护系统分层结构和控制保护系统通信接口方案进行了描述。通过对青澳站的无功功率阶跃和稳态时直流侧总谐波进行分析，证明换流器级控制到换流阀级控制接口特性、换流阀级控制到换流阀接口特性均满足系统要求。该方案设计简单可靠、实用易行，已经在南澳柔性直流输电工程中得到了成功应用，很好地满足了柔性直流工程控制保护系统快速性和可靠性的要求。
개소료유성직류수전계통공제화보호계통분층결구，대남오다단유성직류수전공정청오참공제보호계통분층결구화공제보호계통통신접구방안진행료묘술。통과대청오참적무공공솔계약화은태시직류측총해파진행분석，증명환류기급공제도환류벌급공제접구특성、환류벌급공제도환류벌접구특성균만족계통요구。해방안설계간단가고、실용역행，이경재남오유성직류수전공정중득도료성공응용，흔호지만족료유성직류공정공제보호계통쾌속성화가고성적요구。
This paper introduces the hierarchical structure for the control and protection system, describes the control and protection system interface scheme in Qing’ao station of Nan’ao multi-terminal HVDC flexible project. Through the analysis of reactive power step and total DC harmonic on DC side in Qing’ao station, it proves the interfaces among valve group control, valve control and valve to meet the requirements of control and protection system. The scheme is simple, reliable and easy to realize, and has been successfully applied in Nan’ao HVDC project which greatly meets the requirements of the control and protection system in rapidity and reliability.