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Gas density relay capable of diagnosing oil leakage and oil leakage diagnosis method thereof

A technology of gas density and relay, applied in the field of electric power, can solve problems such as flashover, performance degradation, and affecting the reliable operation of electrical equipment

Pending Publication Date: 2020-07-24
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
3) As for the density relay with oil leakage, its performance will be greatly reduced. At the same time, the leaked oil will affect the reliable operation of electrical equipment. Online monitoring is required to detect and deal with it in time

Method used

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  • Gas density relay capable of diagnosing oil leakage and oil leakage diagnosis method thereof
  • Gas density relay capable of diagnosing oil leakage and oil leakage diagnosis method thereof
  • Gas density relay capable of diagnosing oil leakage and oil leakage diagnosis method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] figure 1 It is a structural schematic diagram of a gas density relay capable of diagnosing oil leakage for high and medium voltage electrical equipment according to Embodiment 1 of the present invention. Such as figure 1 As shown, a gas density relay or gas density monitoring device capable of diagnosing oil leakage mainly includes: a gas density relay body 1 , an oil leakage diagnostic detector 3 and an intelligent control unit 7 . The oil leakage diagnosis detector 3 described in this embodiment includes a liquid level transmitter, a liquid level sensor or a liquid level gauge, and is arranged in the gas density relay body 1 . The body 1 of the gas density relay is filled with a certain amount of oil 112 (usually silicon oil), and the amount of the oil 112 is controlled at a set liquid level 11201. The oil leak diagnosis detector 3 (liquid level transmitter or liquid level sensor or liquid level gauge) is connected with the intelligent control unit 7, and uploads th...

Embodiment 2

[0066] figure 2 It is a schematic diagram of the front structure of a gas density relay capable of diagnosing oil leakage for high-voltage electrical equipment in Embodiment 2 of the present invention. Such as figure 2 As shown, the difference from Embodiment 1 is that the oil leakage diagnostic detector 3 in this embodiment is mainly composed of a pressure sensor. connect. The pressure sensor 3 uploads the collected pressure signal P in the casing 102 of the gas density relay body 1 to the intelligent control unit 7 .

[0067] The working principle of oil leakage diagnosis and detection in this example is that the housing 102 of the gas density relay body 1 is filled with a certain amount of oil 112, and it is packaged after reaching the set liquid level 11201. The housing 102 of the gas density relay body 1 is a sealed cavity, and the sealed cavity has a large proportion of oil liquid 112 and a small amount of gas space, forming a sealed space with a relatively stable p...

Embodiment 3

[0069] image 3 It is a structural schematic diagram of a gas density relay or a gas density monitoring device capable of diagnosing oil leakage for high-voltage electrical equipment in Embodiment 3 of the present invention. Such as image 3 As shown, in the gas density relay or gas density monitoring device capable of diagnosing oil leakage according to Embodiment 3 of the present invention, the diagnostic detector is mainly composed of a temperature sensor. The gas density relay or gas density monitoring device capable of diagnosing oil leakage includes: a gas density relay body 1 , a first temperature sensor 301 , a second temperature sensor 302 , and an intelligent control unit 7 . The first temperature sensor 301 is arranged in the gas density relay body 1 and connected with the intelligent control unit 7, wherein the first temperature sensor 301 is arranged in an appropriate position in the oil of the gas density relay body 1; the second temperature The sensor 302 is a...

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Abstract

The invention provides a gas density relay capable of diagnosing oil leakage and an oil leakage diagnosis method thereof. The gas density relay comprises a gas density relay body, an oil leakage diagnosis detector and an intelligent control unit. The oil leakage diagnosis detector is arranged inside or outside the gas density relay body and is used for collecting oil leakage information of the gasdensity relay body; and the intelligent control unit is connected with the oil leakage diagnosis detector, receives and / or calculates data and / or information monitored by the oil leakage diagnosis detector, diagnoses the received and / or calculated data and / or information, and obtains a current oil leakage state of the gas density relay body. The gas density relay monitors the gas density of gas-insulated or arc-extinguished electrical equipment, meanwhile, online oil leakage monitoring of the gas density relay is completed, efficiency is improved, maintenance is not needed, full-life-cycle intelligent control of the density relay is achieved, operation and maintenance cost is reduced, and safe operation of a power grid is guaranteed.

Description

technical field [0001] The invention relates to the field of electric power technology, in particular to a gas density relay which is applied to high-voltage and medium-voltage electrical equipment and can diagnose oil leakage and a method for diagnosing oil leakage. 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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IPC IPC(8): H01H35/26G01M3/00G01M3/16G01M3/20G01M3/26G01N9/00
CPCG01M3/002G01M3/16G01M3/20G01M3/26G01N9/00H01H35/26
Inventor 金海勇常敏夏铁新叶小伟谭庆
Owner SHANGHAI ROYE ELECTRICAL CO LTD
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