10kV微机线路保护装置合闸回路自动复归能力的提高措施

Improvement measure on the ability to return automatically of the switch-matching circuit of the 10 kV power-line relay protection

针对目前电力系统中运行的10 kV微机线路保护装置合闸回路在合闸但由于操作机构拒合或断路器辅助开关触点配合不当等原因没有合上时经常烧毁合闸线圈这一问题,对合闸回路进行设计改造,串入了一种自行设计的继电器,提高了微机保护合闸回路自动复归能力,避免了线圈的经常烧毁。此设计同样可以运用在35 kV线路保护二次回路中。

Aiming at the switch-matching coil destroy when matching the switch but can＇t be matched because of various reasons of the 10kV micro-computer line relay protection in the power system, this paper carries out the design reformation towards this problem, raises the ability to return automatically of the switch-matching circuit, and avoids the coil destroy usually. This design can be used in the 35kV line protection.