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Electrode space control system for insulating gas discharge decomposition component detection device

A technology for insulating gas and decomposing components, which is applied in the direction of electrical program control, digital control, and testing of dielectric strength. The effect of ensuring the service life and accurate positional accuracy

Inactive Publication Date: 2014-04-09
CHONGQING UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main disadvantage of this patent is: the distance between the needle-plate electrodes in the insulating gas discharge decomposition device of this system needs to be adjusted manually by opening the cover plate of the shell of the SF6 gas discharge decomposition device , after adjusting the step spacing, close the cover plate to ensure the sealing of the shell. This method of manually adjusting the step spacing is very inconvenient, time-consuming and laborious, and the adjustment accuracy is poor, and adjusting the step spacing multiple times will make the casing The sealing element is damaged, which affects the sealing of the shell and affects the service life of the SF6 gas discharge decomposition device

Method used

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  • Electrode space control system for insulating gas discharge decomposition component detection device
  • Electrode space control system for insulating gas discharge decomposition component detection device
  • Electrode space control system for insulating gas discharge decomposition component detection device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Such as Figure 1~3 As shown, a control system for the electrode spacing in the insulation gas discharge decomposition component detection system is that the low-voltage conductive rod in the insulation gas discharge decomposition device in the existing insulation gas partial discharge decomposition component detection system protrudes from the shell On one end of the body, an adjustment system for electrode spacing is added. The electrode spacing adjustment system consists of an insulating bushing 37, a sealing buckle sleeve 38, a linear guide rail 39, a ball screw 40, a coupling 41, a servo motor 42, a back plate 43, a single-pole single-throw switch 44, a servo driver 45, Single-pole double-throw switch 46, 24V DC power supply 47 and other components.

[0030] The insulating bushing 37 is a polytetrafluoroethylene bushing with an outer diameter of 20 mm and a length of 105 mm. At the axial center of the insulating bushing 37, a diameter matching the outer diameter o...

Embodiment 2

[0039] A multi-region detection system for partial discharge decomposition components of insulating gas is the same as that in Embodiment 1. Wherein the insulating bushing 37 is a polytetrafluoroethylene bushing with an outer diameter of 25mm and a length of 115mm, the outer diameter of the upper disk of the sealing buckle sleeve is 75mm, and the thickness is 15mm, and the outer diameter of the lower cylinder is 50mm, The height is 50mm, the back plate is 550mm in length, 150mm in width, and 25mm in thickness, and the linear guide rail 39 is 65mm away from the lower end surface of the lower fixing plate 22 of the insulating gas discharge decomposition component detection device. The precision of the ball screw is between C4 and the diameter of the screw is 15mm.

Embodiment 3

[0041] A multi-region detection system for partial discharge decomposition components of insulating gas is the same as that in Embodiment 1. Wherein the insulating bushing 37 is a polytetrafluoroethylene bushing with an outer diameter of 30mm and a length of 125mm, the outer diameter of the upper disk of the sealing buckle sleeve is 80mm, and the thickness is 20mm, and the outer diameter of the lower cylinder is 60mm, The height is 60mm, the back plate is 580mm in length, 160mm in width, and 30mm in thickness, and the linear guide rail 39 is 70mm away from the lower end surface of the lower fixing plate 22 of the insulating gas discharge decomposition component detection device. The accuracy of the ball screw is between C3 and the diameter of the screw is 20mm.

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Abstract

An electrode space control system for an insulating gas discharge decomposition component detection device relates to the technical field of on-line insulating state monitoring of insulating gas electrical equipment and is characterized in that an electrode space adjusting system is additionally arranged at one end of a low-voltage conductor pole, which extends out of a casing, wherein the low-voltage conductor pole is in an insulating gas discharge decomposition device of a conventional insulating gas partial discharge decomposition component detecting system; and the adjusting system comprises an insulating shaft sleeve, a sealing shaft sleeve, a linear guide rail, a ball screw, a servomotor, a servo-driver, a power supply and the like. The detection device has the main effects of automatically controlling the electrode space of an insulating gas discharge decomposition device conveniently and accurately and ensuring the airtightness and the service life of the device. The detection device can be widely applied to insulating gas discharge decomposition devices of insulating gas partial discharge decomposition component detecting systems and is particularly applicable to multi-region detection devices for insulating gas partial discharge decomposition components.

Description

technical field [0001] The invention belongs to the technical field of on-line monitoring of the insulation state of gas-insulated electrical equipment, and in particular relates to an automatic control system for electrode spacing in an insulating gas partial discharge decomposition device. Background technique [0002] Gas-insulated combined electrical appliances (GIS for short) have the advantages of small footprint, safe and reliable operation, less maintenance workload, long maintenance cycle, etc., and have been widely used in power systems. However, the inevitable insulation defects inside GIS will gradually expand and cause faults to occur. The most common electrical fault feature is partial discharge (PD) before complete insulation breakdown or flashover. Studies have shown that PD can cause the decomposition of insulating gas, and different insulation defects may lead to differences in the decomposition process, decomposition rate, relative content of decomposition...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/12G05B19/18
Inventor 张晓星唐炬李松辽肖淞刘锦平
Owner CHONGQING UNIV
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