Switching system and method for replacing high-voltage cable sheath protector without power cut

The invention relates to the technical field of sheath protectors, in particular to a switching system and method for replacing a high-voltage cable sheath protector without power cut. When the high-voltage cable sheath protector provided with the switching device has an insulation hidden danger, the high-voltage cable sheath protector can be replaced and tested without power failure, so that the electricity selling loss caused by power failure of an application cable is avoided, and the production benefit of a power supply company is improved. The switching device has a remote electric control function, so that when the protector is replaced and tested, the dangers of opening the box cover and contacting suspension voltage are avoided, and the safety of power transmission and transformation state maintenance and test personnel is improved. According to the remote electric control mechanism, due to the fact that the electromagnetic valve technology with the longer service life is used, the high failure rate o