System for testing insulation reliability of ultra-high-voltage line-outgoing device

Abstract

The invention relates to a system for testing the insulation reliability of an ultra-high-voltage line-outgoing device, which comprises an oil tank, a sleeve, a tail equalizing ball and the like, wherein the tail equalizing ball is arranged at the horizontal end of the line-outgoing device; the oil tank is connected to a base by a support, and the inside of the oil tank is provided with a tested product (namely, the line-outgoing device); the line-outgoing device comprises an L-shaped equalizing tube and a top equalizing ball, wherein the top equalizing ball is connected with the vertical end of the equalizing tube; and the top end of the oil tank is provided with a lifting pedestal, the sleeve is fixed on a flange of the lifting pedestal, the horizontal end of the line-outgoing device is connected with a tail equalizing ball, and the sleeve is connected with the top equalizing ball and the tail equalizing ball by a potential bonding line. By using the system provided by the invention, the line-outgoing device can separate from a transformer or reactor entity and carry out an electrical test separately, so that the insulation performance of the line-outgoing device can be grasped more comprehensively and accurately, thereby facilitating the basic experimental studies of the line-outgoing device and the performance improvement research on products; and the damage to the transformer or the reactor and other components can be avoided.

Description

technical field [0001] The invention belongs to the technical field of high-voltage insulation, and in particular relates to an insulation reliability test system for extra-high voltage outlet devices. Background technique [0002] The UHV outlet device is one of the key components of AC UHV transformers and reactors. It is the shielding and insulation device for the outlet wires connected between the high-voltage coil ends of transformers and reactors and bushings. It is usually used in UHV transformers and reactors. Molded detachable lead structure. Its structure is complex, its reliability is high, and its design and manufacture are difficult. [0003] Electrical performance is an important measure of UHV outlet devices. The ultimate insulation level and long-term operating performance of outlet devices can be obtained through insulation reliability tests. Since the insulation level of the UHV outlet device itself is relatively high, and the design value of the insulati...

AI Technical Summary

Problems solved by technology

[0005] At present, there is no device and method for conducting electrical tests on the outlet device alone. Due to the large number of components that constitute the transformer, the insulation coordination is more complicated. To conduct more in-depth research on the insulation performance of the outlet device, such as increasing the applied voltage or extending voltage time, it may cause damage to other components of the transformer

Therefore, the outlet device is tested together with the transformer or reactor as a whole, and the test voltage and pressurization time will be limited, which is not convenient for in-depth research on the insulation performance of the outlet device

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