摘要
同步选相分合闸即相控开关技术能够根据不同负载特性控制断路器在电流或电压的特定相位完成分、合闸。利用此项技术解决电力机车自动过分相时开关转换过程中产生的过电压和涌流问题,从理论分析及仿真验证两方面证明,同步分合闸可以有效地缓解暂态过程对电力系统及机车设备的冲击,避免过电压、过流造成的牵引变电所保护跳闸,提高了系统电能质量及电气化铁路的运行可靠性。
Breakers can be opened or closed at a chosen phase according to different characteristics of load by controlled switching technique. By means of the controlled switching, the magnitude of over-voltage and inrush current occurred from the auto-passing of phase separation of electric power system and electric equipment of locomotive from and circuit simulation demonstrated the well performance locomotive can be reduced greatly,which effectively protected damage of electrical transient effects. Basic principal analysis of controlled switching in this paper.
出处
《电气开关》
2009年第1期23-26,共4页
Electric Switchgear
关键词
选相分合闸
过电压
涌流
自动过分相
controlled switching
over-voltage
inrush-current
auto-passing of phase separation
