Insulation gas voltage endurance testing method and testing device

A technology of withstand voltage test and insulating gas, which is used in measuring devices, testing dielectric strength, measuring electricity, etc., can solve the problems of inability to directly measure the electrical insulation performance of gas, expensive measurement costs, and long measurement process, and achieves measurement speed. Fast, safe to use, simple to operate

Inactive Publication Date: 2005-11-23
何平安
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AI Technical Summary

Problems solved by technology

The measurement process of this method is long and complicated, usually more than a week, the measurement cost is expensive, and the cost of each measurement is several thousand yuan, and it can only be completed in the power center test institute above the provincial level
Its biggest flaw is that it cannot directly measure SF 6 Electrical insulating properties of gases

Method used

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  • Insulation gas voltage endurance testing method and testing device

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Embodiment Construction

[0019] As shown in the figure, the testing device has a circular cylinder 1 made of insulating material. The insulating material can be plastic, glass, ceramic, etc. The two ends of the cylinder body 1 are respectively fixed with metal flanges 2 by bonding. The upper end cover 3 and the lower end cover 4 are respectively fixed on the upper and lower end flanges 2 of the cylinder body 1 with bolts. O-shaped rubber sealing ring 8, the upper end cover 3 is fixed with a high-voltage measuring electrode 5, the lower end cover 4 is fixed with a threaded sleeve 7, and the ground end high-voltage measurement telegram 6 with a scale engraved on it is screwed in the threaded sleeve 7, and the lower end cover 4 There is a through hole 9 communicating with the cylinder 1, and the outer end of the through hole 9 is welded with a four-way 13, and the other three ports of the four-way 13 are respectively connected with an intake valve 15, a vacuum pressure dual-purpose meter 14, and a vacuum val...

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Abstract

The invention relates to a measuring method and device of insulation gas pressure resistance measurement, which has a sealing container, manufactured by insulation material and can take on over 1MPa air pressure, wherein a pair of measuring electrode is posited inside the container. It has the following steps: first cleaning the container and sealing it, adjusting and measuring the distance of the electrodes, heating, drying and purging it in air draft, then inputting test gas into the container, placing the measuring electrodes on high-voltage test circuit, exerting high voltage to the electrodes and graduate increasing until it disruptive discharging then measuring instantaneous discharge voltage.

Description

Technical field [0001] The invention relates to the field of high-voltage electrical measurement, in particular to a method for testing gas electrical insulation performance and its special equipment. Background technique [0002] With sulfur hexafluoride (SF 6 ) And other insulating gases are widely used in high-voltage electrical equipment, how to recover SF 6 ? How to purify SF 6 ? How to measure SF 6 The pressure resistance? It has become a major issue that people urgently need to solve. [0003] Although pure SF 6 The gas is non-toxic and harmless, but after running in high-voltage electrical equipment, heating, damp, decomposition and other reactions will produce highly toxic fluoride, not recycling will seriously endanger the environment and personal safety. Therefore, the power industry regulations stipulate that it is strictly forbidden to use SF in the installation and overhaul of high-voltage electrical equipment. 6 The gas is discharged into the atmosphere at will, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/12
Inventor 何平安
Owner 何平安
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