摘要
选择具有区域选择性联锁功能可确保断路器上下级完全选择性保护,减少故障动作影响范围,并缩短断路器的分断时间。介绍了区域选择性联锁的原理及应用,给出了区域选择性联锁(三级)联线及参数整定示意图,并进行了分析。此功能适用于断路器短路短延时和接地故障保护。
To select interlock function with area selection can ensure circuit breaker upper and lower level complete selection protection, reducing breakdown action impacts range and shortening breaking time of circuit breakers. Introduction was made to the principle and application of area seIection interlock, giving out area selection interlock （three levels） connecting lines and parameters rectification schematic diagram and analysis was carried out. This function is applicable to circuit breaker short circuit short time delay and grounding breakdown protection.
关键词
低压配电系统
选择性保护
万能式断路器
智能控制器
low-voltage power distribution system
selection protection
open-construction circuit breaker
intelligent controller
