An arc light protection system and method for feed-out lines in switch cabinets

A protection system and switchgear technology, applied in emergency protection circuit devices, electrical components, etc., can solve problems such as no feeder protection, and achieve the effect of reducing power outage time, avoiding further spread of faults, and reducing maintenance costs

Active Publication Date: 2017-12-01
南京中凯光电科技股份有限公司
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  • Abstract
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  • Claims
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Problems solved by technology

[0012] Purpose of the invention: the present invention provides an arc light protection system and method for feeder lines in switchgear to solve the problem that the arc light protection devices in the prior art are only for busbar protection, but not for feeder line protection

Method used

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  • An arc light protection system and method for feed-out lines in switch cabinets
  • An arc light protection system and method for feed-out lines in switch cabinets
  • An arc light protection system and method for feed-out lines in switch cabinets

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Embodiment Construction

[0032] The present invention will be further described below in conjunction with the accompanying drawings.

[0033] An arc protection system for feed-out lines in a switch cabinet, including a CPU, an arc sensor, a current signal, a pure arc selection switch, a key, a 485 communication module, an arc sensor self-test indicator light, an action indicator light and an exit relay;

[0034] The CPU is connected to the arc sensor, current signal, arc sensor self-test indicator, action indicator and exit relay;

[0035] The arc sensor and current signal input the signal to the CPU, and the CPU outputs the signal to the arc sensor self-test indicator, action indicator and exit relay;

[0036] The CPU is also connected with a pure arc light selection switch, buttons and 485 communication module.

[0037] The CPU is a 32-bit CPU with a watchdog inside to effectively prevent the program from running away. The main chip of the CPU has an embedded memory, and also has a timer, an analog...

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Abstract

The invention discloses an arc light protection system and method for feed-out lines in a switch cabinet. The system includes a CPU, an arc light sensor, a current signal, a pure arc light selection switch, a key, a 485 communication module, and an arc light sensor self-inspection indicator lamp, action indicator light and exit relay; the CPU connects the arc sensor, current signal, arc sensor self-test indicator light, action indicator light and exit relay; the arc sensor and current signal input the signal to the CPU, and the CPU outputs the signal to the arc sensor self-inspection Inspection indicator light, action indicator light and outlet relay; CPU is connected with pure arc light selection switch, button and 485 communication module; the present invention adds the self-inspection function of the arc light channel, each self-inspection indicator light corresponds to an arc sensor channel, when the When the channel is connected to the arc sensor, the arc sensor self-test indicator corresponding to the channel will light up, and you can intuitively see the access status of the arc channel of the device; it can independently protect 6 feeders and trip independently.

Description

technical field [0001] The invention belongs to the field of power system protection, in particular to an arc light protection system and method for feed-out lines in a switch cabinet. Background technique [0002] According to reports, in my country's power system, hundreds of switch cabinets are burned every year. Most of them are because there is no special feeder protection system installed, and the damage caused by the fault cannot be removed quickly and timely. Because the feeder protection system is not installed, when the feeder in the switch cabinet is short-circuited, the fault cannot be detected and interrupted in time, so that the fault spreads further, and the fault is often developed and expanded, resulting in huge economic losses. [0003] An arc light protection system and method for feeder lines in a switchgear takes the detection of arc light as the protection criterion, and sends an alarm or trip command when the feeder line is single-phase to ground arci...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02H7/26
Inventor 李杏彬刘贵华谭龙柬王瑶胡娅莉徐德高张伟罗世栋何宝昌马俊郭利然刘伟浩金超杰蒋英平许勇程莉
Owner 南京中凯光电科技股份有限公司
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