A multi-structure high-voltage bushing performance assessment testing platform and testing method
A technology of high-voltage bushing and testing platform, which is applied in the direction of testing dielectric strength, measuring electricity, measuring devices, etc., and can solve the problems of difficulty in sampling and incompatibility.
Active Publication Date: 2018-08-07
WUHAN NARI LIABILITY OF STATE GRID ELECTRIC POWER RES INST +3
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Problems solved by technology
However, due to the special structure and oil-less characteristics of the bushing, traditional insulation state detection methods other than dielectric loss detection are not suitable for bushing insulation state detection due to sampling difficulties. Therefore, offline nondestructive testing technology for bushing insulation state is very important important
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[0023] The technical solution of the present invention will be described below with reference to the drawings and embodiments.
[0024] Such as figure 1 As shown, the multi-structured high-voltage bushing performance evaluation and testing platform and testing method of the present invention. The testing platform is composed of oil and gas bushings 5, dry bushings 6 and transformer oil-paper bushings 7 to form a closed loop, and the oil and gas bushings 5 pass Supported by the rising tube 2, one end of the oil and gas bushing 5 is softly connected to the lower end of the oil paper bushing 7 of the transformer through the test tank 1, and the connection end is selected with the corresponding anti-corona pressure equalizing cover, and the other end of the oil and gas bushing 5 is passed SF 6 The gas-insulated tank 3 is hard-connected to the lower end of the dry bushing 6, and the connection end is an anti-corona pressure equalizing cover. The outer layer of the oil-gas bushing 5 is...
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The invention relates to the power transmission and transformation high voltage insulation test technology field and particularly relates to a multi-structure high voltage bushing performance examination detection platform and a test method. The invention adopts a transformer oilpaper bushing, a dry type bushing and a gas-oil bushing to form a closed loop; a high voltage power supply simulates working condition voltage to exert in a bushing circuit; a big current device stimulates operation working condition load current to exert in the bushing circuit; and a set of test experiment platform is formed. The invention can simultaneously perform on-line monitoring and off-line test on the insulation state of the plurality of bushings under the condition close to the working condition, and can carry out immersion type bushing thermostabilization test under the condition close to the working condition.
Description
Technical field [0001] The invention relates to the technical field of power transmission and transformation high-voltage insulation testing, in particular to a multi-structure high-voltage bushing performance assessment testing platform and a testing method. Background technique [0002] High-voltage (oil paper, dry, oil and gas) bushings used in power transmission and transformation equipment are important accessories for power transmission and transformation equipment. With the increase of power transmission voltage level and the increase of transmission capacity, the impact of power transmission and transformation equipment and its accessories The requirements for safety and reliability are increasing, and the defects in the process, structure and mechanism existing in the design, manufacturing and testing of the existing power transmission and transformation equipment and its accessories have also received increasing attention. In the manufacturing process of high-voltage bu...
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IPC IPC(8): G01R31/12
CPCG01R31/1263
Inventor 张连星聂德鑫邓建钢程林刘诣杜振波万星辰胡媛媛
Owner WUHAN NARI LIABILITY OF STATE GRID ELECTRIC POWER RES INST