10 kV分支开关选型、保护配置及定值计算需要注意的问题

Noticeable Problems in Selection,Protection Configuration and Fixed Value Calculation of 10 kV Branch Switches

10 kV分支开关能否正确动作,关系到客户用电的可靠性。针对分支开关安装地点在上级瞬时速断保护范围内或外,提出分支开关的选型,保护配置、定值计算,及与实际情况相符的保护方案。

Whether the 10 kV branch switch can operate correctly is related to the reliability of customer power consumption.In this paper,whether the installation location of the branch switch is within the range of the upper-level instantaneous quick-break protection,the selection,protection configuration and fixed value calculation of branch switch and the protection scheme corresponding to the actual situation are proposed.