Modularized electronic switch used for high-pressure oscillatory wave generator

Abstract

The invention discloses a modularized electronic switch used for a high-pressure oscillatory wave generator. The modularized electronic switch mainly comprises a disc type printed-circuit board, a corresponding multiplexed output core-through isolation power supply and a corresponding optical fiber control unit, wherein the disc type printed-circuit board takes an IGBT switch series structure as a body. IGBT switch units are arranged to form the disc type series structure in a wound mode to achieve voltage equipartition and synchronous conduction among the multiple IGBT switch units, and the problems that a traditional high-pressure switch is not fast enough in action and not high enough in power level are solved. According to the multiplexed output core-through isolation power supply structure, multiplexed isolation power supply is achieved under the condition that the power level and action speed are not lowered, the integration level of the switch is improved, the structure of the switch is optimized, and the multiplexed output core-through isolation power supply structure can further be used on occasions with a higher voltage level through simple cascading. The modularized electronic switch has the advantages of being flexible in use, light, easy to overhaul and maintain and particularly suitable for a high-voltage oscillatory wave testing experiment, carried out by a power enterprise, of the insulation state of a distribution cable.

Description

technical field [0001] The invention relates to the partial discharge monitoring technology of electric power equipment and its application field, relates to a device specially used in a power cable weakly damped oscillatory wave test system, and in particular to a modular electronic switch for a high-voltage oscillatory wave generator. Background technique [0002] The preventive test of AC power cables is an important content to ensure the reliable operation of the power grid. If the traditional power frequency withstand voltage test is carried out, the volume and weight of the transformer will become very large, which is difficult to meet the needs of on-site testing. In recent years, an advanced damped AC voltage test technology has been paid close attention by domestic and foreign power companies because of its good equivalence to the AC withstand voltage test, small size, and simple operation. At present, many cable operation and test units in China have used the high...

AI Technical Summary

Problems solved by technology

[0005] The invention provides a modular electronic switch for a high-voltage oscillatory wave generator, which solves the technical difficulties of low power density, short life, slow action speed, and large switching loss of the existing high-voltage switch for an oscillatory wave test system, and improves the related field. It optimizes the traditional structure and layout of the oscillatory wave test system. It has the characteristics of simple structure, easy expansion to various voltage levels, and light appearance.

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