An arc protection system suitable for single busbar section

Abstract

The invention discloses an arc light protection system suitable for single-bus section. The arc light protection system suitable for the single-bus section comprises a first section bus, a second section bus, a first section isolation disconnecting link, a second section isolation disconnecting link, a first section inlet wire breaker and a second section inlet wire breaker, and further comprises a section breaker, a first over-current detection unit, a second over-current detection unit, a first section outlet wire breaker, a second section outlet wire breaker, switch cabinets and arc light sensors, wherein the first section isolation disconnecting link, the second section isolation disconnecting link, the first section inlet wire breaker and the second section inlet wire breaker are connected with the first section bus and the second section bus respectively. All the arc light sensors of the two sets of switch cabinets are connected to a first arc light collecting unit and a second arc light collecting unit respectively, and the second arc light collecting unit is connected with an arc light protection main unit through optical fibers. According to the arc light protection system suitable for the single-bus section, medium and low voltage switch cabinets can be guaranteed to switch off faulty lines fast and accurately when arc light faults occur, the duration of fault arc light is restrained fundamentally, harm caused by the arc light is eliminated, enlarging of faults is avoided, and equipment and personal safety is guaranteed.

Description

technical field [0001] The invention relates to an arc light protection system suitable for a single bus section, and is suitable for the arc light protection of the bus bar of a medium and low voltage switch cabinet. Background technique [0002] According to GB / T14285-2006 "Technical Regulations for Relay Protection and Safety Automatic Devices", power systems below 35kV are not equipped with busbar protection, and overcurrent protection is generally used as backup protection. However, due to the large number of outgoing lines on the medium and low voltage busbars, frequent operations, the short distance between the three-phase conductor lines and the ground, equipment insulation aging and mechanical wear and other reasons, the failure of the medium and low voltage busbars has increased accordingly. In order to ensure the safe operation of transformers and busbar switchgear and avoid the internal arcing time, the use of arc light protection system will undoubtedly increase...

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide an applicable Arc protection system for single-bus section; it aims to solve the problem of cutting off the internal faults of the busbar and switchgear in the first time when an arc fault occurs on any busbar in the system of single-busbar section, so as to avoid the further expansion of the fault and protect the equipment and personal safety

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