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Simulation device of contact face overheating fault of sulfur hexafluoride gas insulation electric device

A technology of sulfur hexafluoride gas and electrical equipment, which is applied in the directions of measuring devices, measuring electricity, measuring electrical variables, etc., can solve the problem of inability to simulate local overheating faults, and achieve the effects of simple structure, accuracy and safety.

Active Publication Date: 2012-06-27
CHONGQING UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main disadvantage of this patent is: only for SF 6 Simulation of partial discharge faults occurring in gas-insulated electrical equipment cannot be performed on SF 6 Simulation of localized overheating faults in gas-insulated electrical equipment

Method used

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  • Simulation device of contact face overheating fault of sulfur hexafluoride gas insulation electric device
  • Simulation device of contact face overheating fault of sulfur hexafluoride gas insulation electric device
  • Simulation device of contact face overheating fault of sulfur hexafluoride gas insulation electric device

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Such as Figure 1~3 shown, a SF 6 The simulation device for overheating failure of gas-insulated electrical equipment mainly includes switching power supply 1, solid state relay 2, overheating failure simulation element 3, intelligent digital display temperature regulator 4 and gas chromatograph 5.

[0026] The input terminal of the switching power supply 1 (commercially available product) is connected to the 220V / 50Hz mains through a wire, and the positive pole of the output terminal of the switching power supply 1 (voltage 12V, maximum current 10A) is connected to the The positive pole of the output terminal of the solid state relay 2 is connected, the negative pole of the output terminal of the solid state relay 2 is connected to the positive pole of the temperature sensor terminal 11 of the overheating fault simulation component 3 through a wire, and the negative pole of the output terminal of the switching power supply 1 is connected through a wire It is connected...

Embodiment 2

[0032] a SF 6 The simulation device for overheating faults of gas-insulated electrical equipment is the same as in Embodiment 1, wherein: the shape of the cylinder body 8 is 45 cm in inner diameter, 1.2 cm in thickness, and 70 cm in height. A through hole with a diameter of 1.7 cm (i.e. a suction hole) is provided at the lower part of the side wall of the cylinder body 8 . On the upper part of the other side wall of the cylinder body 8, a through hole (i.e. an air intake hole) with a diameter of 1.7 cm is arranged. On the side wall between the suction hole and the air inlet hole of the cylinder 8, a through hole (ie, a vacuum pressure gauge hole) with a diameter of 1.7 cm is arranged. Two circular through holes with a diameter of 0.6 cm are arranged at the center of the bottom end of the cylinder body 8 . Two circular through-holes with a diameter of 0.6 cm are arranged above the side wall air extraction holes of the cylinder body 8 . The material of the heating element 9 i...

Embodiment 3

[0034] a SF 6The simulation device for overheating faults of gas-insulated electrical equipment is the same as in Embodiment 1, wherein: the shape of the cylinder 8 is 50 cm in inner diameter, 1.5 cm in thickness, and 80 cm in height. A through hole with a diameter of 12 cm (i.e. a suction hole) is provided on the lower part of the side wall of the cylinder body 8 . On the upper part of the other side wall of the cylinder body 8, a through hole (i.e. an air intake hole) with a diameter of 2 cm is arranged. On the side wall between the air extraction hole and the air intake hole of the cylinder 8, a through hole (ie a vacuum pressure gauge hole) with a diameter of 2 cm is set. Two circular through holes with a diameter of 0.7 cm are arranged at the center of the bottom end of the cylinder body 8 . Two circular through-holes with a diameter of 0.7 cm are arranged above the side wall air extraction holes of the cylinder body 8 . The material of the heating element 9 is electro...

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Abstract

A simulation device of a contact face overheating fault of a sulfur hexafluoride gas insulation electric device belongs to the technical field of online monitoring of the insulation state of the sulfur hexafluoride (SF6) gas insulation electric device and comprises a switch power supply, a solid-state relay, an overheating fault simulation element, an intelligent digital display temperature adjuster and a gas chromatograph. The simulation device can simulate the overheating fault on the contact face of the SF6 gas insulation electric device and has the advantages of being high in accuracy, simple in structure, low in cost and the like. The simulation device can be widely used in simulation of the overheating fault in the SF6 gas insulation electric device, especially simulation of the contact face overheating fault of the SF6 gas insulation electric device.

Description

technical field [0001] The present invention belongs to sulfur hexafluoride (SF 6 ) Technical field of on-line monitoring of insulation status of gas-insulated electrical equipment, specifically related to SF 6 Simulation device for overheating faults of gas-insulated electrical equipment. Background technique [0002] SF 6 Gas-insulated electrical equipment, in SF 6 As an insulating medium, gas has the advantages of high dielectric strength, stable operation, small footprint and small maintenance workload. It is more and more widely used in power systems, especially in the construction and transformation of large and medium-sized city power grids. However, judging from the operating conditions in recent years, the inevitable internal defects will still cause faults and continue to expand with the increase of operating time. Once a fault occurs, the SF 6 Due to the fully enclosed combined structure of gas-insulated electrical equipment, it is very difficult to perform fa...

Claims

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Application Information

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IPC IPC(8): G01R31/00G01N30/02
Inventor 唐炬张晓星裘吟君曾福平袁静帆范庆涛
Owner CHONGQING UNIV