Transformer suspended discharge simulation device

Abstract

The invention relates to the technical field of high voltage and insulation, and specifically relates to a transformer suspended discharge simulation device. According to the transformer suspended discharge simulation device, real noncontact and unsupported suspension of a suspended electrode are realized via the co-action of a permanent magnet of the suspended electrode, an annular permanent magnet and an electromagnet by using the principle that two like magnetic poles repel each other, so that real transformer suspended discharge simulation is realized; the distances among a high-voltage electrode, the suspended electrode and a grounding electrode are adjustable, so that the discharge characteristic is definite, and the discharge strength is controllable; the discharge phenomenon caused by suspended potential in a transformer can be detected and researched, so that the requirement of researches on transformer suspended positioning discharge characteristic is met, and the manufacturing process level of the transformer and the partial discharge detection capability of the transformer are effectively improved.

Description

technical field [0001] The invention relates to the technical field of high voltage and insulation, in particular to a transformer suspension discharge simulation device. Background technique [0002] Transformer is the key equipment of power transmission and transformation system. Its safe operation is directly related to the safety and reliability of the power system. The failure of the transformer will inevitably cause partial or even large-scale power outages in the power system. Statistical analysis of a large number of faults shows that insulation faults are the main reason affecting the normal operation of transformers. [0003] Most of the current large-scale power transformers are oil-immersed power transformers. Although they are designed with sufficient electrical strength and excellent mechanical properties, accidental factors in the manufacturing process will cause some congenital local defects, such as air bubbles, cracks, suspension Conductive particles and e...

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Problems solved by technology

[0005] The existing simulated discharge devices have the following deficiencies: the electrode spacing in the simulated discharge device cannot be adjusted accurately, and the discharge characteristics generated by different discharge distances cannot be studied; the suspended electrodes in the suspended discharge device need to be in contact with insulating parts, such as provided by Chinese invention patent 201010285751.4 A test device for high-voltage oil-paper insulation characteristics has been developed, but the suspension electrodes in this device need insulation support, which cannot achieve true non-contact and support-free suspension.

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