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Maintenance-free intelligent detection device and method for density relay and monitoring system

A technology for density relays and detection devices, which is applied in the direction of measuring devices, circuit breaker testing, instruments, etc., and can solve problems such as potential safety hazards, reduced dielectric strength on the surface of insulating parts, and hazards

Pending Publication Date: 2019-12-13
SHANGHAI ZHUODIAN ELECTRIC
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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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  • Maintenance-free intelligent detection device and method for density relay and monitoring system
  • Maintenance-free intelligent detection device and method for density relay and monitoring system
  • Maintenance-free intelligent detection device and method for density relay and monitoring system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0178] Please refer to the attached figure 1 , the invention discloses a maintenance-free intelligent detection device for a density relay, comprising: a gas density relay 1, a pressure sensor 2, a temperature sensor 3, a valve 4, a pressure adjustment mechanism 5, an online calibration contact signal sampling unit 6, an intelligent Control unit 7, multi-way connector 9; one end of valve 4 is connected to SF 6On the electrical equipment 8, the other end of the valve 4 is connected with the gas density relay 1; the pressure sensor 2 is connected with the gas density relay 1 on the gas circuit; the pressure adjustment mechanism 5 is connected with the gas density relay 1; the online calibration contact signal sampling Unit 6 is connected with density relay 1 and intelligent control unit 7 respectively; pressure sensor 2 and temperature sensor 3 are connected with intelligent control unit 7; valve 4 is connected with intelligent control unit 7; pressure adjustment mechanism 5 is ...

Embodiment 2

[0194] See attached image 3 , the invention discloses a maintenance-free intelligent detection device for a density relay, comprising: a gas density relay 1, a pressure sensor 2, a temperature sensor 3, a solenoid valve 4, a pressure adjustment mechanism 5, an online verification contact signal sampling unit 6, Intelligent control unit 7, multi-way joint 9, air supply interface 10, self-sealing valve 11. One end of the self-sealing valve 11 is sealingly connected to the SF 6 On the electrical equipment 8 , the other end of the self-sealing valve 11 communicates with the valve 4 ; one end of the valve 4 is sealed and connected to the self-sealing valve 11 , and the other end of the valve 4 is connected to the multi-way joint 9 . The gas density relay 1 is installed on the multi-way joint 9; the pressure sensor 2 and the temperature sensor 3 are arranged on the gas density relay 1, and the pressure sensor 2 is connected to the gas density relay 1 on the gas circuit; the pressu...

Embodiment 3

[0196] See attached Figure 4 , the invention discloses a maintenance-free intelligent detection device for a density relay, comprising: a mixed gas density relay 1, a pressure sensor 2, a temperature sensor 3, an electric valve 4, a pressure adjustment mechanism 5, and an online verification contact signal sampling unit 6 , an intelligent control unit 7, a multi-way joint 9, an air supply interface 10, and a valve 12. One end of the valve 12 is sealingly connected to the mixed gas electrical equipment 8, and the other end of the valve 12 is connected to the valve 4; The gas density relay 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 together. The pressure sensor 2 communicates with the gas density relay 1 on the gas circuit through the multi-way joint 9; the pressure adjustment mechanism 5 is installed on the multi-way joint 9, an...

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Abstract

The invention discloses a maintenance-free intelligent detection device and method for a density relay and a monitoring system. The detection device is connected with electrical equipment and the gasdensity relay, the electrical equipment is communicated with one end of a valve, and the gas density relay is communicated with the other end of the valve; the maintenance-free intelligent detection device for the density relay comprises a pressure adjusting mechanism, an online check contact signal sampling unit and an intelligent control unit, the pressure adjusting mechanism is communicated with the gas density relay, the online check contact signal sampling unit is connected with the density relay and the intelligent control unit respectively, the valve is connected with the intelligent control unit, and the pressure adjusting mechanism is connected with the intelligent control unit. The device is used for monitoring the gas density of the gas-insulated or arc-extinguishing electricalequipment and completing the online verification of the gas density relay at the same time, so that the efficiency is improved, the operation and maintenance cost is reduced, and the safe operation ofa power grid is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of gas density relays, and more specifically relates to a maintenance-free intelligent detection device, method and monitoring system for density relays. Background technique [0002] Currently, SF 6 (Sulfur hexafluoride) electrical equipment has been widely used in the power sector, industrial and mining enterprises, and 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 SF 6 The amount of electrical equipment is increasing. SF 6 The role of gas in high-voltage electrical equipment is arc extinguishing and insulation, and SF in high-voltage electrical equipment 6 If the density of the gas decreases and the moisture content exceeds the standard, it will seriously affect the SF 6 Safe operation of high-voltage electrical equipment: 1) SF 6 The reduction of gas density to a certain...

Claims

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Application Information

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IPC IPC(8): G01R31/327G01N9/00
CPCG01N9/00G01R31/327
Inventor 苏丽芳
Owner SHANGHAI ZHUODIAN ELECTRIC
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