Vacuum degree on-line detection method and device for breaker and potential information capturing sensor

A detection device and detection method technology, applied in the direction of measuring devices, high-voltage air circuit breakers, measuring electricity, etc., can solve the problems of insufficient equipment maintenance, failure to find out in time, redundant and other problems

Inactive Publication Date: 2012-09-19
GUILIN UNIV OF ELECTRONIC TECH
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

The off-line method compulsorily stipulates a certain maintenance cycle, and its principle is "repair must be done when it is due, and repair must be completed", which is quite blind and mandatory. Practice shows that a considerable part of the planned maintenance work has no practical significance and is redundant. As a result, It is caused by "overhaul" of equipment
If there is a defect in the state of the equipment after the overhaul, but it is not fully exposed during the overhaul process, and it cannot be discovered in time and put into operation, then there will be "insufficient overhaul" of the equipment

Method used

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  • Vacuum degree on-line detection method and device for breaker and potential information capturing sensor
  • Vacuum degree on-line detection method and device for breaker and potential information capturing sensor
  • Vacuum degree on-line detection method and device for breaker and potential information capturing sensor

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Embodiment Construction

[0032] A method for on-line detection of the vacuum degree of a circuit breaker, as shown in Figure 1, comprises the following steps:

[0033] (1) Customize a batch of circuit breakers as experimental samples. The structure and material parameters of the vacuum interrupter of each experimental sample circuit breaker are consistent with the structure and material parameters of the circuit breaker to be tested, and the vacuum interrupter of each experimental sample circuit breaker The degree of vacuum in the interrupter varies;

[0034] (2) Install each of the above-mentioned experimental sample circuit breakers on the offline calibration platform one by one, and make the front end of the potential information capture sensor face the central axis of the vacuum interrupter of the experimental sample circuit breaker; the offline calibration platform and the circuit breaker to be tested The actual installation layout structure is the same;

[0035] (3) Pull the experimental sample...

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Abstract

The invention discloses a vacuum degree on-line detection method and device for a breaker and a potential information capturing sensor. Based on the vacuum insulation and discharge theory and the actual working conditions of a vacuum interrupter, the internal relation among the dielectric constant in the vacuum interrupter, the shielding case potential characteristic and the vacuum degree in the vacuum interrupter is built, and the vacuum degree in the vacuum interrupter can be obtained by measuring the shielding case potential information of the high-voltage vacuum breaker, so that on-line detection of the vacuum degree of the vacuum breaker can be realized.

Description

technical field [0001] The invention relates to the field of on-line detection of high-voltage switch states in electric power systems, in particular to a method and device for on-line detection of the vacuum degree of a circuit breaker and a sensor for capturing potential information. Background technique [0002] The circuit breaker is the safety guard in the power system, which plays a dual role of control and protection in the system. As the leading product of high-voltage switches, high-voltage vacuum circuit breakers represent the development level of a country's power industry to a certain extent, and their health status and performance are closely related to the safe and stable operation of the power system and economic and social benefits. In the research of status evaluation and fault diagnosis of vacuum circuit breakers, the degree of vacuum is one of the main factors determining the breaking capacity of vacuum circuit breakers. Therefore, the vacuum level and its...

Claims

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Application Information

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IPC IPC(8): H01H33/668G01R31/00
Inventor 范兴明张鑫
Owner GUILIN UNIV OF ELECTRONIC TECH
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