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

A test system, UHV technology, applied in the direction of testing dielectric strength, etc., can solve problems such as in-depth research on the insulation performance of inconvenient outlet devices, damage to transformer components, test voltage and pressurization time limitations, etc., to achieve comprehensive and accurate insulation performance , the effect of avoiding damage

Active Publication Date: 2012-01-25
CHINA ELECTRIC POWER RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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

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Embodiment Construction

[0020] The insulation reliability test system of the UHV outlet device of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0021] In the insulation reliability test, in order not to cause damage to other components of the transformer or reactor, it is necessary to design and manufacture an oil tank structure that can meet the requirements of the insulation margin to install the outlet device, and to configure and connect the outlet device. Appropriate casing for the device.

[0022] Such as figure 1 As shown, the insulation reliability test system mainly includes a fuel tank 1, a riser 2, a bushing 3, an outlet device 4 and a tail equalizing ball 5. An outlet device 4 is installed in the fuel tank 1. The outlet device 4 includes a pressure equalizing pipe 41 and a top pressure equalizing ball 42. The top of the fuel tank 1 is provided with a raised seat 2, and the casing 3 is installed on the flange of the raised...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/12
Inventor 李金忠李光范李博孙建涛刘东升刘锐张书琦
Owner CHINA ELECTRIC POWER RES INST
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