适用于配电线路无通道保护的重合闸方案  

Auto-reclosing adaptive to distribution line non-communication protection

作　　者：刘琨[1] 董新洲[1] 施慎行[1] 王宾[1] 

机构地区：[1]清华大学电机工程与应用电子技术系,电力系统及发电设备控制和仿真国家重点实验室,北京100084

出　　处：《清华大学学报（自然科学版）》2012年第3期356-361,共6页Journal of Tsinghua University(Science and Technology)

基　　金：国家自然科学基金项目(50937003,51007045,51120175001);北京市自然科学基金资助项目(3102017);清华大学电力系统及发电设备控制和仿真国家重点实验室重点资助项目(SKLD09M04);国家科技支撑计划资助项目(2006BAJ16B02)

摘　　要：重合闸是提高电力系统供电可靠性的有效手段之一。配电线路无通道保护的时间整定与重合闸的时间整定配合困难,因此配电线路一系列无通道保护都没有使用重合闸功能,这会造成部分负荷停电时间过长。该文提出一种适用于配电线路无通道保护的重合闸方案。负荷侧断路器跳闸后闭锁重合闸功能,其下游负荷由备用电源自动投入装置动作环网开关合闸后恢复供电;电源侧断路器进行三相一次重合闸,瞬时性故障后可重合成功。该方案在瞬时性故障后能恢复对所有负荷供电,缩短了用户的停电时间。EMTP(electro-magnetic transient program)仿真验证了该方案的有效性。Auto reclosing is an effective method to improve power system reliability. However, the distribution line non-communication protection cannot be easily coordinated with the auto-reelosing, so auto reclosing has never been applied to series of distribution line non-communication protection systems sitace bad timing may induce long power failures for some loads. This paper presents an auto-reclosing scheme that adapts to the distribution line non-communication protection. Auto-reclosing is not effective in the load side circuit breaker because this would hinder downstream loads from regaining their power supply after the reserve power source automatically reconnects, so auto-reclosing is applied in the source side circuit breaker. This scheme can restore the power supply to all loads after a temperary fault and minimize the power failure time. The electro-magnetic transient program （EMTP） simulations show the effectiveness of the scheme.

关 键 词：重合闸 配电线路 无通道保护 瞬时性故障 

分 类 号：TM343[电气工程—电机]