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

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

Pending Publication Date: 2020-07-24
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

[0094] figure 1 This is a schematic diagram of the structure of a gas density relay according to the first embodiment of this application. Such as figure 1 As shown, a gas density relay includes: a gas density relay body 1, a first pressure sensor 2, a temperature sensor 3, a force sensor 16, a contact action mechanism 15, an online verification contact signal sampling unit 6 and an intelligent control unit 7 .

[0095] Among them, the gas density relay body 1 includes a housing 101, a base 102, an end seat 108, a pressure detection element 103, a temperature compensation element 104, a number of signal generators 109, a movement 105, Pointer 106, connecting rod 112, dial 107. The movement 105 is fixed on the base 102; one end of the pressure detecting element 103 (Baden tube) is fixed on and connected to the base 102, and the pressure detecting element 103 (Baden tube) ) Is filled with sealing gas, the other end of the pressure detection element 103 (Baden tube) is connected t...

Embodiment 2

[0122] Such as figure 2 As shown, the second embodiment of the present invention provides a gas density relay or gas density monitoring device with online self-checking function.

[0123] The difference from the first embodiment is:

[0124] 1) The driving contact action mechanism 15 is arranged on the outside of the housing 101, and is arranged corresponding to the pressure detection element 103 (Baden tube) of the gas density relay body 1; the driving contact action mechanism 15 is configured as an indirect Therefore, the signal action mechanism 111 of the gas density relay body 1 is displaced correspondingly, and the contact signal action of the gas density relay body 1 is generated.

[0125] The driving contact action mechanism 15 includes an outer cover 158 with an open end, and a driving part 151, a force transmission member 152 (cam), a push rod 153, a spring 154, and a fixing frame 155 arranged in the outer cover 158; the opening of the outer cover 158 Towards the housing 1...

Embodiment 3

[0131] Such as image 3 As shown, the third embodiment of the present invention provides a gas density relay or gas density monitoring device with an online self-checking function.

[0132] The difference from the first embodiment is:

[0133] 1) The driving contact action mechanism 15 is arranged on the outside of the housing 101, and includes an outer cover 158 with an open end, and a driving part 151, a force transmission member 152 (cam) and a push rod 153 arranged in the outer cover 158; the outer cover 158 is sealed (Mainly waterproof intrusion) It is connected to the housing 101 of the gas density relay body 1, and the opening of the outer cover 158 faces the housing 101. The driving contact action mechanism 15 is configured to indirectly cause the signal action mechanism 111 of the gas density relay body 1 to correspondingly shift, thereby causing the gas density relay body 1 to generate contact signal actions.

[0134] The movement 105 of the gas density relay body 1 includ...

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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 is used for high-voltage and medium-voltage electrical equipmentand comprises a gas density relay body, a first pressure sensor, a temperature sensor, a force measuring sensor, a driving contact actuating mechanism and an intelligent control unit. The driving contact actuating mechanism is configured to directly or indirectly drive a signal actuating mechanism of the gas density relay body to displace; the gas density relay body is enabled to generate a contact signal action; the intelligent control unit detects an alarm and/or locking contact signal action value and/or return value of the gas density relay body according to a density value of the contactaction; and verification work of the gas density relay can be completed without the need for maintenance personnel to go to the site, reliability of a power grid is improved, efficiency is increased,operation and maintenance cost is reduced, and a maintenance-free gas density relay can be realized.

Description

Technical field [0001] The invention relates to the technical field of electric power, in particular to a gas density relay with online self-checking function applied to high-voltage and medium-voltage electrical equipment and a checking method thereof. Background technique [0002] With the development of unmanned substations in the direction of networking and digitization, and the increasing requirements for remote control and remote measurement, the online monitoring of the gas density and micro water content status of SF6 and other electrical equipment has important practical significance. With the continuous development of China's smart grid, smart high-voltage electrical equipment, as an important part and key node of smart substations, plays a pivotal role in the security of smart grids. High-voltage electrical equipment is currently mostly SF6 gas insulated equipment. If the gas density is reduced (caused by leakage, etc.), it will seriously affect the electrical performa...

Claims

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Application Information

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IPC IPC(8): H01H35/26H01H35/32G01N9/00G01R31/327
CPCH01H35/26H01H35/32G01N9/00G01R31/327H01H33/563G01R31/3271G01N9/266
Inventor 黄小泵陈进常敏夏铁新金海勇
Owner SHANGHAI ROYE ELECTRICAL CO LTD
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