Traditional tripping escalation in 10 kV distribution networks

which expands the outage range

occurs from time to time

affecting customer power supply reliability and reducing the user experience. Based on the existing configuration of 10 kV distribution automation switches

this paper optimizes the protection grading settings of automated switches to achieve proper time coordination

enabling rapid fault localization and isolation. Combined with practical engineering cases

it verifies the actual effect of graded protection in reducing customer outage hours

improving power supply reliability

and reducing complaints about frequent outages.