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Direct current gas insulation electrical equipment partial discharge decomposition simulation experiment apparatus

A technology for simulating experimental devices and electrical equipment, which is applied in the field of partial discharge decomposition simulating experimental devices for DC gas-insulated electrical equipment, which can solve problems such as inability to carry out PD experiments, and achieve low sample consumption, high detection sensitivity, and high simulation accuracy Effect

Active Publication Date: 2016-02-03
WUHAN UNIV +6
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Currently domestic and foreign in SF 6 The research on PD on-line monitoring of gas-insulated electrical equipment mainly focuses on AC conditions, and the existing SF 6 The simulation experiment device for the failure of gas-insulated electrical equipment, such as the patent No. ZL2007100784930 "Sulfur Hexafluoride Discharge Decomposition Component Analysis System and Its Application Method", is also only for SF under AC conditions. 6 Gas-insulated electrical equipment PD simulation experiments, PD experiments under DC conditions cannot be carried out

Method used

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  • Direct current gas insulation electrical equipment partial discharge decomposition simulation experiment apparatus
  • Direct current gas insulation electrical equipment partial discharge decomposition simulation experiment apparatus
  • Direct current gas insulation electrical equipment partial discharge decomposition simulation experiment apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] In the figure: 1. Voltage regulating console, 2. Test transformer, 3. Protective resistor, 4. Capacitive voltage divider, 5. High voltage rectifier silicon stack, 6. Filter capacitor, 7. Resistive voltage divider, 8. Isolation resistor , 9. Gas discharge chamber, 10. Gas chromatography mass spectrometer, 11. Coupling capacitor, 12. Detection impedance, 13. Digital storage oscilloscope, 14. Stainless steel cylinder, 15. Oval top cover, 16. High voltage bushing , 17. High pressure guide rod, 18. Flange, 19. Screw, 20. Vacuum pressure gauge ball valve, 21. Vacuum pressure gauge, 22. Vacuum pump ball valve, 23. Vacuum pump, 24. Injection ball valve, 25. Injection port, 26. Supporting feet, 27. Grounding conductive rod, 28. Insulation defect, 29. Sampling ball valve, 30. Sampling port, 31. Quartz glass observation window.

[0029] like figure 1 ~4 shown, a SF 6 The PD simulation device for gas-insulated electrical equipment under DC conditions is mainly composed of a DC pr...

Embodiment 2

[0036] a SF 6 The PD simulation device for gas-insulated electrical equipment under DC conditions is the same as in Embodiment 1, wherein: the capacity of the voltage regulating console 1 is 50kVA, the input voltage is 380V, and the output voltage is 0-400V. The test transformer 2 is 100kV / 50kVA. The protection resistor 3 is 100kΩ / 0.3A. The measured voltage range of the capacitive voltage divider 4 is 100kV, the voltage division ratio is 1000:1, and the precision is 1.0 grade. The high voltage silicon rectifier stack 5 is 2CL-150kV / 1A. The filter capacitor 6 is 100kV / 0.2μF. The measurement range of the resistor divider 7 is 140kV, the voltage division ratio is 1000:1, and the precision is 0.5 grade. The isolation resistance 8 is 100kΩ / 0.3A. The shape of the stainless steel cylinder 14 is a cylinder with an inner diameter of 60 cm, a thickness of 1.2 cm and a height of 70 cm. The oval top cover 15 made of stainless steel has a diameter of 65 cm and a thickness of 1.2 cm. ...

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Abstract

The invention relates to a direct current gas insulation electrical equipment partial discharge decomposition simulation experiment apparatus and belongs to the technical field of direct current gas insulation electrical equipment insulation state on-line monitoring. The direct current gas insulation electrical equipment partial discharge decomposition simulation experiment apparatus comprises a direct current power supply system, a gas discharge enclosed air chamber, a detection system and a typical insulation defect physical model, wherein the direct current power supply system comprises a voltage regulation console, a test transformer, a protection resistor, a capacitive voltage divider and a high voltage rectification silicon stack lamp; the detection system comprises a pulse current detection system and a gas chromatography-mass spectrometry detection system; and the typical insulation defect physical model comprises a metal protrusion insulation defect model, a free metal particle insulation defect model, an insulator metal pollution insulation defect model, an insulator air gap insulation defect model and the like. The invention can effectively simulate a typical insulation PD fault and the decomposition process of SF6 under the action of a typical insulation defect PD in direct current gas insulation electrical equipment, thereby providing a solid basis for a system to research direct current PD characteristics, SF6 direct current PD decomposition characteristics and decomposition theories. The invention can be widely used for simulating direct current gas insulation electrical equipment partial discharge.

Description

technical field [0001] The present invention belongs to sulfur hexafluoride (SF 6 ) The technical field of on-line monitoring of the insulation state of gas-insulated electrical equipment, specifically relates to a partial discharge decomposition simulation experiment device for DC gas-insulated electrical equipment. Background technique [0002] Due to sulfur hexafluoride (SF 6 ) has excellent insulation and arc extinguishing properties, making SF 6 SF as insulating medium 6 Gas-insulated electrical equipment has the advantages of high dielectric strength, high reliability, small footprint and low maintenance workload, so it is more and more widely used in the field of high voltage and ultra / ultra high voltage power transmission and transformation. But SF 6 Gas-insulated electrical equipment will inevitably have some insulation defects in the process of manufacturing, assembly and operation. These insulation defects will gradually deteriorate during long-term operation....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/12G01N30/02
Inventor 曾福平唐炬张晓星佘新张潮海姚强苗玉龙程林杨景刚杜修明蔡炜
Owner WUHAN UNIV
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