CAJ | 학술논문

静止同步补偿器(STATCOM)因具有无功输出特性优良、响应速度快、占地面积小等优点，在电力系统中得到了越来越广泛的应用。基于链式多电平换流器和基于模块化多电平换流器(MMC)的STATCOM多电平主回路方案是目前输电系统用 STATCOM中最有可能采用的两种方案。文中对这两种方案在设备构成、控制性能、接地方式和电网故障穿越能力等方面进行了对比分析，并得出了链式方案比MMC方案更适合应用于输电系统STATCOM的结论。
정지동보보상기(STATCOM)인구유무공수출특성우량、향응속도쾌、점지면적소등우점，재전력계통중득도료월래월엄범적응용。기우련식다전평환류기화기우모괴화다전평환류기(MMC)적STATCOM다전평주회로방안시목전수전계통용 STATCOM중최유가능채용적량충방안。문중대저량충방안재설비구성、공제성능、접지방식화전망고장천월능력등방면진행료대비분석，병득출료련식방안비MMC방안경괄합응용우수전계통STATCOM적결론。
Because of its excellent reactive power output characteristics,fast response and small footprint,static synchronous compensator (STATCOM) has been more and more widely used in power system.At present,cascade multilevel converter and modular multilevel converter(MMC)are the most possible solutions of STATCOM for transmission system.A contrast study of two schemes is conducted in terms of equipment constitutes,control performance,grounding method and fault ride-through capability,and a conclusion is obtained that cascade scheme is more suitable than MMC scheme for STATCOM used in transmission system.