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Arc short-circuit protection device and control method

A protection device and short-circuit protection technology, which is applied to emergency protection circuit devices, circuit devices, and automatic disconnection emergency protection devices, etc., and can solve problems such as misoperation of arc short-circuit protection devices.

Inactive Publication Date: 2010-06-23
郭鸿
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the embodiments of the present invention is to provide an arc short-circuit protection method, aiming to solve the problem that the existing arc short-circuit protection device has misoperation under the action of disturbing light

Method used

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  • Arc short-circuit protection device and control method
  • Arc short-circuit protection device and control method

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Embodiment Construction

[0021] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0022] figure 1 The structure of the arc short-circuit protection device provided by the first embodiment of the present invention is shown, and for the convenience of description, only the parts related to the embodiment of the present invention are shown.

[0023] The arc short-circuit protection device provided by the embodiment of the present invention includes an arc probe 100, which is an ultraviolet photosensitive tube, and its detection spectrum range is 190-290nm, and it detects light by using spectral characteristics. In it, it is explained that the light is an arc, and an arc signal is ...

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Abstract

The invention is applicable to the power system relay protection field and provides an arc short-circuit protection device and control method. The method comprises the following steps: controlling an arc probe to detect a light by utilizing the spectral characteristic, generating an arc signal if the spectral range of the light is in the detection spectral range; controlling an arc detection unit to converting the arc signal to an arc pulse signal; receiving the arc pulse signal transmitted by the arc detection unit, processing, outputting a driving signal to a protection exit circuit and disconnecting all the incoming lines of a bus bar. The arc short-circuit protection device of the embodiment of the invention utilizes the spectral characteristic to detect the light and has the advantage that the protection can not be operated incorrectly under the action of interference light.

Description

technical field [0001] The invention belongs to the field of relay protection for electric power systems, and in particular relates to an arc-light short-circuit protection device and a control method thereof. Background technique [0002] Arcing short circuit of power lines is the most serious fault in the power grid, especially the arcing short circuit fault occurring at the busbar of medium and low voltage switchgear. Due to various reasons, it cannot be eliminated quickly, resulting in disastrous consequences. At present, the current-type relay protection device is used for the protection of the incoming line on the busbar of the medium and low voltage switchgear. In order to selectively remove the fault when a fault occurs, the incoming line protection must be consistent with the current action value and action delay of the outgoing line protection. To cooperate, in order to ensure selectivity, the incoming line protection generally cancels the current quick-break prote...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H7/22H02H5/00
Inventor 郭鸿
Owner 郭鸿
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