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Insulating gas insulating performance experiment system and method thereof applied to electrical equipment

An insulating gas and experimental system technology, applied in the direction of testing dielectric strength, etc., can solve the problems of high price, difficult distance adjustment, and inaccurateness, achieve good air tightness, solve the problem of floating potential discharge, and improve the withstand voltage level Effect

Inactive Publication Date: 2014-07-09
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Disadvantages of this patent: 1) The problem of floating potential discharge. When the test voltage is high, the discharge occurs between the high-voltage conductive rod and the stainless steel cover plate of the insulating gas discharge decomposition device before the electrodes inside the device, making the experiment impossible; 2) The distance between the needle-plate electrodes in the insulating gas decomposition device cannot be adjusted accurately, and the needle-plate electrode distance adjustment is realized through the expansion and contraction of the high-voltage conductive rod. The distance adjustment is not easy to achieve and is not accurate enough; The withstand voltage is only 0.4MPa, while the real GIS withstand voltage is 0.4-0.6MPa, and the air pressure is usually 0.5MPa; 4) The tank volume of the insulating gas discharge decomposition device is large, which consumes gas, and the price of alternative gas is relatively high , such as CF 3 The price of I gas is SF under the same conditions 6 10 times that of gas, each test consumes a lot of gas

Method used

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  • Insulating gas insulating performance experiment system and method thereof applied to electrical equipment
  • Insulating gas insulating performance experiment system and method thereof applied to electrical equipment
  • Insulating gas insulating performance experiment system and method thereof applied to electrical equipment

Examples

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Embodiment 1

[0037] This embodiment discloses an insulating gas insulation performance test system applied to electrical equipment, including a high-voltage generator, a measuring device, and an insulating gas test device.

[0038] The high-voltage generator includes a voltage regulator 1 , a non-corona test transformer 2 , a non-partial discharge protection resistor 3 , and a coupling capacitor 8 . The primary side of the voltage regulator 1 is connected to the 380V mains through wires, and the secondary side of the voltage regulator 1 is connected to the primary side of the non-corona test transformer 2 through cables. The coupling capacitor 8 has two terminals A and B. After the A terminal of the coupling capacitor 8 is connected in series with the non-discharge protection resistor 3 , it is electrically connected to the high voltage terminal of the secondary side of the non-corona test transformer 2 . After the B terminal of the coupling capacitor 8 is connected in series with the non...

Embodiment 2

[0048] This embodiment discloses an insulating gas insulation performance experiment system applied to electrical equipment, the main structure of which is the same as that of Embodiment 1.

[0049] In this embodiment, the primary side of the voltage regulator 1 is connected to the 380V mains through a wire, and the secondary side of the voltage regulator 1 is connected to the non-corona test transformer 2 (commercially available product) through a cable. ) primary side connection, the rated capacity of the non-corona test transformer 2 is 60kVA, the high and low voltage winding ratio is 60kV / 400V, and the rated current is 1.0A / 150A. The high voltage end of the secondary side of the non-corona test transformer 2 is connected to the non-partial discharge protection resistor 3 through a cable, so as to perform current limiting protection on the line.

[0050]In the outer tank part of the present embodiment, the outer tank shell 11 is cylindrical stainless steel, and the material...

Embodiment 3

[0060] An insulating gas insulation performance test system applied to electrical equipment is the same as that in Embodiment 1 or 2. The outer tank shell of the gas insulation performance test device has an outer diameter of 450 mm, a thickness of 15 mm, and a length of 650 mm. The outer diameter of the outer tank fixing plate is 500 mm, and the thickness is 15 mm. The outer diameter of the outer tank cover plate is 500 mm, and the thickness is 20 mm. The outer diameter of the screw hole on the outer tank fixing plate and the outer tank cover plate is 25mm. The outer diameter of the insulating sleeve of the outer tank is 40 mm, and the length is 100 mm. The outer diameter of the high-voltage conductive rod of the outer tank is 8 mm, and the length is 150 mm. The outer diameter of the inner tank shell of the gas insulation performance test device is 280 mm, the thickness is 20 mm, and the height is 180 mm. The outer diameter of the fixing plate on the inner tank is 330mm, and...

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Abstract

The invention provides an insulating gas insulating performance experiment system and a method thereof applied to electrical equipment. The insulating gas insulating performance experiment system and the method thereof applied to the electrical equipment is targeted to the defect of an insulating gas discharging decomposition device. By means of the insulating gas insulating performance experiment system and the method thereof applied to the electrical equipment, an insulating performance experiment of high-low pressure insulating gas in the electrical equipment can be conducted, various defects of a real GIS can be effectively simulated, the insulating performance of various replaced gas and mixed gas of the replaced gas under the experiment condition of different defects, different mixing ratios and different air pressure can be obtained, comparing with SF6 gas under the same experiment condition is conducted, and the experiment basis for replacing the SF6 gas is provided.

Description

technical field [0001] The invention belongs to the field of high-voltage new gas insulating materials, and in particular relates to an experimental system and a method for the insulation performance of a new insulating gas applied to electrical equipment. Background technique [0002] SF 6 Gas has good insulation and arc extinguishing properties, and is widely used in high-voltage power equipment such as gas-insulated switchgear (GIS) and gas circuit breaker (GCB). However SF 6 As a greenhouse gas that is very harmful to the atmospheric environment, its greenhouse effect potential value (GWP) is CO 2 23,900 times of that, and has a lifetime of about 3,200 years in the atmosphere, which has a cumulative effect on global warming. Therefore, in the "Kyoto Protocol" signed by the parties to the United Nations Convention on Climate Change in 1997, SF 6 gas listed as one of the six restricted-use greenhouse gases, requiring basic restrictions on SF by 2020 6 gas use. Scholar...

Claims

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Application Information

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IPC IPC(8): G01R31/12
Inventor 张晓星唐炬韩晔飞肖淞
Owner CHONGQING UNIV
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