10kV ring main unit with branch emergency operation loop

Abstract

The invention discloses a 10kV ring main unit with a branch emergency operation loop, and relates to the field of ring main unit equipment. At present, power failure time is long, wiring is tedious and construction is complex when a fault occurs or maintenance occurs. The 10kV ring main unit comprises a top outgoing line bushing, a main line bushing, a branch line bushing, a main line three-position load / grounding switch, a branch line three-position load / grounding switch, a main line operating mechanism and a branch line operating mechanism, wherein the main line three-position load / grounding switch and the branch line three-position load / grounding switch are arranged in a cabinet body, the top outgoing line bushing and a bus are connected with the main line three-position load / grounding switch or the branch line three-position load / grounding switch, the main line three-position load / grounding switch, a main line and the main line bushing are connected in sequence, and the branch line three-position load / grounding switch, the branch line and the branch line bushing are connected in sequence. According to the technical scheme, the ring main unit forms a fixed power supply hot spot which is used as a power supply access point or a load output point, so that power failure time is reduced, wiring is convenient, and construction is simple.

Description

technical field [0001] The invention relates to the field of ring network cabinet equipment, in particular to a 10kV ring network cabinet with a branch emergency operation circuit. Background technique [0002] As the urban distribution network adopts a large number of cables into the ground, it solves the problems of urban overhead lines affecting the appearance, tree-line contradictions, and building-line contradictions. But at the same time, a new problem has arisen, that is, the cable line is close to the ground, so the line design is almost fully insulated. Once a fault or maintenance occurs, live work cannot be used for work, and the work can only be carried out with a power outage, and the power outage time Still very long. [0003] At present, operating equipment such as generator cars, box-changing cars, and bypass cables are used for surface or point restoration operations. There is no problem in terms of technical theory, but in actual work, these operating equi...

AI Technical Summary

Problems solved by technology

Although it is possible to use the backup bays of equipment such as ring main cabinets, switch cabinets, and branch boxes as power-taking points, it is difficult to occupy the spare bays and expand the spare bays of equipment due to the rapid access of supporting equipment for business expansion, and the operating lines are generally far away in the work place. Difficulty finding alternate intervals

If you choose non-standby interval access, because the cable line equipment is basically equipped with five-proof interlocking, the operation needs to be powered off, and the T-shaped head must be connected or transferred. complex and time-consuming

Images