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

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

Pending Publication Date: 2020-03-27
SHANGHAI ROYE ELECTRICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, if the on-site inspection of the inspectors is not perfor

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0161] like figure 1As 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, and a gas flow restrictor 4 , Pressure regulating mechanism 5, online verification contact signal sampling unit 6, intelligent control unit 7, electrical equipment 8, inertial air chamber 12, one-way valve 13. Pressure sensor 2, temperature sensor 3, online verification contact signal sampling unit 6, intelligent control unit 7 and gas density relay body 1 are set together, that is, pressure sensor 2, temperature sensor 3, online verification contact signal sampling unit 6 and intelligent The control unit 7 is arranged on the body 1 of the gas density relay. The gas density relay body 1 communicates with the inertial gas chamber 12 through the air channel 1A, and the inertial gas chamber 12 communicates with the e...

Embodiment 2

[0174] like figure 2 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, and a gas flow limiting member 4 , pressure regulating mechanism 5, online verification contact signal sampling unit 6, intelligent control unit 7, electrical equipment 8. Pressure sensor 2, temperature sensor 3, online verification contact signal sampling unit 6, intelligent control unit 7 and gas density relay body 1 are set together, that is, pressure sensor 2, temperature sensor 3, online verification contact signal sampling unit 6 and intelligent The control unit 7 is arranged on the body 1 of the gas density relay. Same as the first embodiment, the gas density relay body 1 communicates with the inertial gas chamber 12 through the air channel 1A, and the inertial gas chamber 12 communicates with the electrical equ...

Embodiment 3

[0183] like image 3 As shown, a gas density relay or a gas density monitoring device with an online verification function includes a gas density relay body 1, and the gas density relay body 1 includes: a housing 101, and a base set in the housing 101 Seat 102, end seat 108, pressure detector 103, temperature compensation element 104, several signal generators 109, movement 105, pointer 106, dial 107. One end of the pressure detector 103 is fixed on the base 102 and communicated with it, and the other end of the pressure detector 103 is connected to one end of the temperature compensation element 104 through the end seat 108, the The other end of the temperature compensating element 104 is provided with a crossbeam, and the crossbeam is provided with an adjusting member that pushes the signal generator 109 to make the contacts of the signal generator 109 on or off. The movement 105 is fixed on the base 102; the other end of the temperature compensation element 104 is also con...

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PUM

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Abstract

The invention provides a gas density relay with an on-line self-checking function and a checking method thereof. The gas density relay comprises a gas density relay body, a gas density detection sensor, a pressure regulating mechanism, a gas flow limiting piece, an on-line checking contact signal sampling unit and an intelligent control unit. During verification, the gas flow flowing to the gas density relay body through the gas flow limiting piece is insufficient to synchronously compensate the pressure drop of the gas density relay body adjusted by the pressure adjusting mechanism, and thenthe gas pressure of the gas density relay body is reduced; the gas density relay body is subjected to contact action, and the contact action is transmitted to the intelligent control unit through theon-line verification contact signal sampling unit; and the intelligent control unit detects a contact signal action value and/or a return value of the gas density relay body according to the density value during contact action, online verification can be completed without a control valve or a maintainer on site, maintenance is avoided, the reliability of a power grid is improved, and the cost is reduced.

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, the capacity of my country's power system has expanded rapidly, and the amount of SF6 electrical equipment is increasing. 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 moisture content exceeds the standard, it will seriously affect the safe operation of SF6 high-voltage electrical equipment. Therefore, the power grid operating regulations ...

Claims

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Application Information

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IPC IPC(8): G01R31/327G01N9/00G01D21/02H01H35/26H01H35/28
CPCG01D21/02G01N9/00G01R31/3274H01H35/26H01H35/28
Inventor 罗立波常敏黄小泵夏铁新郭正操曾伟
Owner SHANGHAI ROYE ELECTRICAL CO LTD
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