分布式静止串联补偿器相间协调控制方法  

Interphase coordinated control method for distributed static series compensator

作　　者：林艺哲 潘磊[1] 邹强[1] 董云龙[1] LIN Yizhe;PAN Lei;ZOU Qiang;DONG Yunlong(NR Electric Co.,Ltd,Nanjing 211102)

机构地区：[1]南京南瑞继保电气有限公司,南京211102

出　　处：《电气技术》2024年第1期72-78,共7页Electrical Engineering

摘　　要：分布式静止串联补偿器(DSSC)是一种串联型分布式柔性交流输电装置,功率模组串联接入交流线路。为快速、平稳地处理DSSC的各相模组故障,本文提出相间协调控制策略,通过引入热备用控制机制,在三相DSSC的某一相出现模组故障后,将非故障相指定模组转为热备用状态并输出零电压,同时提升各相正常模组的输出电压,从而保持DSSC输出总电压不变,在避免对交流电网造成不平衡扰动的同时,保证模组故障不影响线路稳态潮流。在湖州分布式潮流控制器(DPFC)示范工程中,通过开展模组故障模拟试验,验证了相间协调控制方法的可行性和有效性。Distributed static series compensator(DSSC)is a kind of serial flexible AC transmission systems(FACTS)device and power modules are connected in series to AC line.To deal with power module fault in DSSC quickly and smoothly,this paper proposes an interphase coordinated control method for DSSC by introducing hot-standby control.When power module fault occurs in one phase,selected power modules in healthy phases will be switched to hot-standby mode and the output voltage is controlled to be zero.Moreover,the output voltage of other normal operated power modules will be enhanced to keep the DSSC outputting constant voltage.The proposed method can make sure that three-phase DSSC can be controlled in balance after power module fault without affecting the power flow in steady state.Furthermore,the proposed method is applied on Huzhou distributed power flow controller(DPFC)project,and power module fault simulative experiment is conducted to verify the feasibility and validity.

关 键 词：分布式静止串联补偿器(DSSC) 模组故障 相间协调控制 热备用控制 

分 类 号：TM761.12[电气工程—电力系统及自动化]