Short-wave ultraviolet light bus protection device

Abstract

The invention discloses a short-wave ultraviolet light bus protection device, and belongs to the technical field of high-voltage bus protection; in order to solve the technical problem, the bus protection device which is high in sensitivity and accuracy and reliable in working is provided; and in order to solve the problem, the technical scheme adopted by the protection device is as follows: a short-wave ultraviolet light detection sensor is mounted on a bus arc light monitoring part for collecting short-wave ultraviolet, and is connected with a short-wave ultraviolet light bus protection main unit through an expansion control unit; a singlechip is connected with a short-wave ultraviolet light signal input unit, an AD sampling unit, an output control unit, a communication unit and a human-computer interface respectively; the short-wave ultraviolet light bus protection main unit is connected with the expansion control unit through the short-wave ultraviolet light signal input unit; the AD sampling unit is connected with a signal collection unit for collecting current signals of the bus; and an output end of the output control unit is connected with a bus breaker. The short-wave ultraviolet light bus protection device is applicable to power distribution systems such as transformer substations and the like.

Description

technical field [0001] The invention relates to a short-wave ultraviolet busbar protection device, which belongs to the technical field of high-voltage busbar protection, and specifically relates to a protective device capable of safely and rapidly isolating faulty equipment of substation busbars of 35 KV or below. Background technique [0002] The arc short-circuit fault of medium and low voltage busbars is a very serious fault in the power distribution system. Its occurrence often causes disastrous consequences. The various fault arc effects produced by the huge energy released by the internal arc combustion severely burnt expensive Switching equipment, short-circuit current impact can damage the main transformer, causing a long-term power outage; more seriously, it can also cause personal injury and death of nearby workers. [0003] Due to the consideration of the fault criterion and selectivity of the existing protection devices, the design of removing or isolating the f...

AI Technical Summary

Problems solved by technology

[0002] The arc short-circuit fault of medium and low voltage busbars is a very serious fault in the power distribution system. Its occurrence often causes disastrous consequences. The various fault arc effects produced by the huge energy released by the internal arc combustion severely burnt expensive Switching equipment, short-circuit current impact can damage the main transformer and cause a long-term power outage; more seriously, it will also cause personal injury and death of nearby workers

[0003] Due to the consideration of the fault criterion and selectivity of the existing protection devices, the design of removing or isolating the fault is generally between 1 second and 2 seconds, and the design time of the circuit breaker cabinet to withstand the arc fault is 0.1 second, so the current Some protection devices cannot meet the requirements of quick removal of faults or protection coverage. There is an urgent need for a fast, economical and adaptable new medium and low voltage busbar protection system to solve the problem of high failure probability of medium and low voltage busbars and delayed removal. Faults lead to the development and expansion of faults, resulting in huge economic losses

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