Outgoing cable maintenance method based on temporary mobile power application

Abstract

This application proposes a method for overhauling outgoing cables based on the application of temporary mobile power sources, including selecting towers to carry out live and load-opening and tension-resistant operations, and connecting the primary grid-connected cables of temporary mobile power sources to the load side of the demarcation point switch; On the load side, use live work to connect the temporary mobile power supply for the first grid connection cable to start the first grid connection, and switch the mains power supply side at the demarcation point to use live work to connect the temporary mobile power supply for the second grid connection cable to start the second grid connection , based on the verification phase sequence result of the temporary mobile power supply and the system power supply, it is judged whether to perform an automatic closing operation on the secondary grid-connected switch in the temporary mobile power supply. Through one-time grid connection or two-time grid connection, the position of the upper pole of the cable will be isolated by the demarcation point switch, so as to ensure that the users on the overhead line still maintain normal power consumption when the power failure of the outgoing cable is replaced and reconnected, avoiding or greatly Reduce the loss of the number of households caused by power outage maintenance, displacement, replacement and reconnection of outgoing cables.

Description

Outgoing cable maintenance method based on temporary mobile power application technical field The present invention relates to the method field of distribution network overhaul, relate in particular to the outgoing cable based on temporary mobile power supply application Repair method. Background technique In the process of urbanization and urbanization construction, due to the needs of municipal construction, some laying or burying are often overhead. The section of the line outgoing cable shall be excavated and trimmed. At this time, it is necessary to install these outgoing cables in the live running state. Line shift diversion. [0003] As for the line of the ring network or the connection wiring, the outgoing cable can be switched by the power supply, relying on the opposite side power supply. Source II supplies power to ensure that the power consumption of users on the line is not affected, and the power outage is shifted, replaced, and connected, as shown in ...

AI Technical Summary

Problems solved by technology

[0005] But for the radial structure line without opposite side power supply II, such as figure 2 As shown, when the buried section of the outgoing cable of the power supply is excavated and repaired due to the needs of municipal engineering construction, etc., because the excavation and repair occurs at the head of the power supply of the overhead line, the radial structure overhead line in the rear section will be completely blacked out. As a result, user 1, user 2, user 3, user 4, and user 5 are accompanied by shutdown, and the user 1, user 2, user 3, Power supply for user 4 and user 5

[0006] Usually, the excavation and repair work of such municipal engineering construction or the displacement, replacement, reconnection and reconnection of outgoing cables often last for several hours, so for power supply companies, there will be a large loss of households during power outages, which seriously affects the reliability of power supply for power supply companies Sex and power business environment, and customer satisfaction with electricity

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