Dynamic detection method and device for opening rebound stroke of running switch cabinet circuit breaker

A dynamic detection and circuit breaker technology, which is applied in circuit breaker testing, measuring devices, switchgear status indication, etc., can solve problems such as dynamic detection and research on the opening rebound stroke of circuit breakers that have not been seen systematically, so as to ensure safety. Stable operation, accurate detection effect

Inactive Publication Date: 2019-10-11
STATE GRID HUNAN ELECTRIC POWER +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no device in China that can realize the dynamic detection of the opening and rebound stroke of the switchgear circuit breaker in operation, and there is no systematic research on the dynamic detection of the opening and rebound stroke of the 10-35kV switchgear circuit breaker

Method used

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  • Dynamic detection method and device for opening rebound stroke of running switch cabinet circuit breaker
  • Dynamic detection method and device for opening rebound stroke of running switch cabinet circuit breaker
  • Dynamic detection method and device for opening rebound stroke of running switch cabinet circuit breaker

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Embodiment Construction

[0024] Such as figure 1 As shown, the implementation steps of the dynamic detection method for the opening and rebound stroke of the switchgear circuit breaker in operation in this embodiment include:

[0025] 1) Monitor the opening control signal of the switch cabinet circuit breaker in operation, and jump to the next step after receiving the opening control signal;

[0026] 2) During the opening process of the switch cabinet circuit breaker, the relative distance to the contact is collected along the axis direction of the contact through the distance measuring device;

[0027] 3) According to the relative distance information in the opening process, the opening rebound travel of the switch cabinet circuit breaker in operation is obtained.

[0028] In this embodiment, in step 2), collecting the relative distance from the contact head along the axis direction of the contact head through the distance measuring device specifically means that the laser sensor emits laser light t...

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Abstract

The invention discloses a dynamic detection method and device for the opening rebound stroke of a running switch cabinet circuit breaker. The detection method comprises the following implementation steps: monitoring an opening control signal of the switch cabinet circuit breaker; after the opening control signal is received, acquiring a relative distance away from a contact along the axial direction of the contact through distance measuring equipment in the opening process of the switch cabinet circuit breaker; and calculating the opening rebound stroke of the running switch cabinet circuit breaker according to relative distance information in the opening process. The detection device comprises a control unit and a laser sensor which are connected with each other. The method can be used for detecting the opening rebound strokes of contacts in the action process of various switch cabinet circuit breakers, has a dynamic detection function during live running, provides data support for the state of a switch cabinet circuit breaker mechanism, and can be used for further researching a circuit breaker mechanism state evaluation method. A maintenance decision is made according to an evaluation result to guide maintenance of the circuit breaker mechanism, so that safe and stable running of the circuit breaker can be effectively ensured.

Description

technical field [0001] The invention relates to the field of fault detection of circuit breakers, in particular to a method and device for dynamic detection of opening rebound travel of a circuit breaker in a switch cabinet during operation. Background technique [0002] The circuit breaker is the most important control and protection equipment to ensure the safe and stable operation of the power grid. It has a large number in the power system and its mechanism action characteristics are complex. If the energy storage of the circuit breaker mechanism of the switch cabinet is abnormal or the opening buffer is defective, it may occur that the circuit breaker’s opening rebound stroke is too large, causing the breaker to break down again, resulting in the explosion of the circuit breaker, and the loss is far greater than that of the circuit breaker itself. value. Therefore, it is of great significance to detect the opening rebound stroke of the 10-35kV switchgear circuit breake...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H71/04G01R31/333G01B11/02
CPCG01B11/026G01R31/3333H01H71/04H01H2071/044
Inventor 范敏毛文奇黄海波何智强毛柳明叶会生吴水锋袁培闫迎任章鳌
Owner STATE GRID HUNAN ELECTRIC POWER
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