Gas density relay with online self-calibration function and calibration method thereof

A gas density, relay technology, applied in the field of electric power, can solve problems such as hazards, potential safety hazards, flashovers, etc.

Pending Publication Date: 2019-11-29
SHANGHAI ROYE ELECTRICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

3) When the temperature drops, too much moisture may form condensation water, which will significantly reduce the insulation strength of the surface of the insulating part, or even flashover, causing serious damage
In addition, if the on-site inspection of the inspectors is not performed in a standardized manner, there are still potential safety hazards

Method used

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  • Gas density relay with online self-calibration function and calibration method thereof
  • Gas density relay with online self-calibration function and calibration method thereof
  • Gas density relay with online self-calibration function and calibration method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0138] like figure 1 As shown, the first embodiment of the present invention provides a gas density relay or a gas density monitoring device with an online self-verification function, including: a gas density relay body 1, a pressure sensor 2, a temperature sensor 3, a valve 4, and a pressure regulating mechanism 5. On-line verification contact signal sampling unit 6, intelligent control unit 7, multi-way joint 9 and air supply interface 10. The gas density relay body 1 , valve 4 , pressure sensor 2 , pressure regulating mechanism 5 and gas supply interface 10 are arranged on the multi-way joint 9 . Specifically, see figure 2 , the multi-way joint is provided with a third interface 91, and the third interface 91 is provided with a connecting portion that is docked with the electrical equipment 8, and the valve 4 is partially or completely embedded in the multi-way joint 9 , that is, the valve 4 and the multi-way joint 9 are integrally designed. The multi-way joint 9 includ...

Embodiment 2

[0163] like Figure 4 As shown, a gas density relay or a gas density monitoring device with an online self-verification function provided by Embodiment 2 of the present invention includes: a gas density relay body 1, a pressure sensor 2, a temperature sensor 3, a valve 4, and a pressure regulating mechanism 5. On-line verification contact signal sampling unit 6, intelligent control unit 7, multi-way joint 9, air supply interface 10. The multi-way joint is provided with a third interface, and the third interface is provided with a connecting portion docked with the electrical equipment 8, and the valve 4 is partly (or completely) embedded in the multi-way joint 9, That is, the valve 4 and the multi-way joint 9 are integrally designed. The gas density relay body 1 is installed on the multi-way joint 9; the pressure sensor 2, the temperature sensor 3, the online verification contact signal sampling unit 6 and the intelligent control unit 7 are arranged on the gas density relay b...

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Abstract

The invention provides a gas density relay with an online self-calibration function and a calibration method thereof for high-voltage and medium-voltage electrical equipment. The gas density relay comprises a gas density relay body, a gas density detection sensor, a multi-way connector, a pressure adjustment mechanism, an on-line calibration connection point signal sampling unit and an intelligentcontrol unit; a valve is partially or fully embedded in the multi-way connector, or the valve and the multi-way connector are integratedly designed. The pressure rise and fall are adjusted by the pressure adjustment mechanism, so that the connection point action of the gas density relay body occurs, and the connection point action is transmitted to the intelligent control unit through the onlinecalibration connection point signal sampling unit; the intelligent control unit detects an operation value and/or a return value of a connection point signal of the gas density relay body according tothe density value of the connection point during action; the calibration work of the gas density relay can be completed by a maintainer without the need to be on-site, thereby improving the reliability of a power grid, improving the work efficiency and reducing the cost.

Description

technical field [0001] The invention relates to the field of electric power technology, in particular to a gas density relay with an online self-checking function and a checking method thereof, which is applied to high-voltage and medium-voltage electrical equipment. Background technique [0002] At present, SF6 (sulfur hexafluoride) electrical equipment has been widely used in the power sector and industrial and mining enterprises, which has promoted the rapid development of the power industry. In recent years, with the rapid economic development, the capacity of my country's power system has expanded rapidly, and the amount of SF6 electrical equipment has increased. The role of SF6 gas in high-voltage electrical equipment is arc extinguishing and insulation. If the density of SF6 gas in high-voltage electrical equipment decreases and the micro-water content exceeds the standard, it will seriously affect the safe operation of SF6 high-voltage electrical equipment: 1) The de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/327G01N9/36G01N9/00G05D16/20H01H35/26H01H35/28
CPCG01N9/002G01N9/36G01N2009/006G01R31/3275G05D16/2006H01H35/26H01H35/28
Inventor 夏铁新贺兵常敏郭正操廖海明金海勇
Owner SHANGHAI ROYE ELECTRICAL CO LTD
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