Operation method for replacing 10kV drop-out fuse in on-load manner

Abstract

The invention relates to the field of a drop-out fuse in a distribution line of a power grid, and particularly relates to an operation method for replacing a 10kV drop-out fuse in an on-load manner. The operation method is characterized in that an insulation drainage wire bypass drop-out fuse is directly connected with the two ends of the drop-out fuse to be replaced for splitting current, and thus the 10kV drop-out fuse is replaced in the on-load manner and under the condition of continuously charging a load. Compared with the prior art, the operation method has the beneficial effects that the load on the lower end of equipment can be charged continuously in the operation period, and when the on-load operation is implemented by an electrified operation method, the delivery time and the redelivery time of the equipment can be avoided, the operation flow is shortened, and the electricity utilization of a user can not be affected in the operation period; the failure rate of 10kV primary equipment can be reduced greatly, and the power supply quality can be improved effectively; and the drop-out fuse is replaced in the on-load manner and with an insulation drainage wire, the operation is conducted by a double-man double-insulation bucket truck, the operation time is short, few tools are used, resources can be saved effectively, and the power supply reliability is improved.

Description

technical field [0001] The invention relates to the field of drop-out fuses for power grid distribution lines, in particular to an operating method for replacing 10kV drop-out fuses with load. Background technique [0002] In the past, there are two main methods for replacing drop-out fuses: one is to stop the load at the lower end of the drop-out fuse, and then use the method of live disconnection and connection of leads to cut off the power supply at the upper end of the drop-out fuse before replacing it; One is to directly cut off the power supply at the upper end of the drop-out fuse for power failure replacement. Although both of the above two methods can replace drop-out fuses, part of the electrical load still needs to be shut down; from the failure of drop-out fuses to the restoration of power supply, certain social impacts and economic losses will still be caused during this period. [0003] At present, drop-out fuses have not been replaced by insulated drain wires...

AI Technical Summary

Problems solved by technology

Although the above two methods can replace the drop-out fuse, it still needs to stop a part of the electrical load; from the failure of the drop-out fuse to the restoration of power supply, it will still cause certain social impact and economic loss during this period

[0003] At present, drop-out fuses have not been replaced by insulated drain wires with load. The main reason is that the distance between phases is short, there are many factors affecting safety, and the requirements for the technical level of operators are high; with the increase in the use of drop-out fuses in recent years, If the drop-out fuse can be replaced with load, it will create huge social and economic value