Intelligent lightning-proof power distribution cabinet

Abstract

The invention belongs to the field of a power distribution cabinet, and particularly relates to an intelligent lightning-proof power distribution cabinet, which consists of a shell, a vacuum circuit breaker, a combined high-voltage lightning protection box and a lightning monitor, the combined high-voltage lightning protection box is provided with a sensor for collecting overvoltage and overcurrent signals and a three-phase arrester for current leakage, and the lightning monitor is respectively connected with the sensor and the vacuum circuit breaker and is provided with a signal processing unit used for analyzing, processing, storing and outputting signals output by the sensor and the vacuum circuit breaker. Since the overcurrent and overvoltage signals resulting from lightning can be collected by the sensor, the arrester is coupled with a separator for safe discharge of overcurrent, and lightning signals can be analyzed, stored and output by the signal processing unit of the lightning monitor, the real-time monitoring of lightning faults can be realized, professional lightning protection can be provided for relevant devices of the power distribution cabinet, and an effective monitoring means can be provided for rapidly positioning a substation subject to failure resulting from lightning.

Description

technical field [0001] The invention belongs to the field of distribution cabinets, in particular to an intelligent lightning protection distribution cabinet. [0002] Background technique [0003] The overvoltage caused by lightning strikes has the characteristics of steep peak and large amplitude, and the insulating porcelain bottle of switch knife transformer will be threatened. In addition to the direct loss of equipment, the indirect loss caused by line tripping and partial power failure is even greater. [0004] Chinese patent CN201020518356.1 (patent name: lightning protection device for power distribution cabinet and frequency conversion cabinet) discloses a lightning protection device for power distribution cabinet, which adopts the combination mode of "lightning protection device + reactor" , can effectively protect against lightning impact, greatly improve the power input quality of the power distribution cabinet, and protect the back-end electrical equipment, bu...

AI Technical Summary

Problems solved by technology

[0003] The overvoltage caused by lightning strikes has the characteristics of steep peak and large amplitude, and the insulating porcelain bottle of switch knife transformer will be threatened. In addition to the direct loss of equipment, the indirect loss caused by line tripping and partial power failure is even greater.

[0004] Chinese patent CN201020518356.1 (patent name: lightning protection device for power distribution cabinet and frequency conversion cabinet) discloses a lightning protection device for power distribution cabinet, which adopts the combination mode of "lightning protection device + reactor" , can effectively protect against lightning impact, greatly improve the power input quality of the power distribution cabinet, and protect the back-end electrical equipment, but this device only provides passive protection, and cannot monitor lightning parameters in real time and provide feedback, and cannot analyze accurately and quickly in real time And judge the faulty substation caused by lightning strike

[0005] Chinese patent CN201120182270.0 (patent name: mobile lightning protection and leakage prevention power distribution cabinet) discloses a mobile lightning protection and leakage prevention power distribution cabinet, including cabinet body, lightning protection device, leakage protector, leakage circuit breaker, Mobile device, the device has a compact structure, reasonable layout, excellent lightning protection, overvoltage protection and anti-leakage functions, but still cannot monitor lightning parameters in real time and provide feedback, and cannot analyze and judge faulty substations caused by lightning strikes in real time, accurately and quickly

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