Self-rising and falling large-capacity non-partial discharge test transformer platform and test method used in converter valve hall

Abstract

The invention provides a self-rising and falling large-capacity non-partial discharge test transformer platform and test method used in a converter valve hall. The self-rising and falling large-capacity non-partial discharge test transformer platform used in the converter valve hall includes a platform chassis, a transformer support fixed on the platform chassis, a hydraulic cylinder fixing support, a hydraulic station, rollers installed at the bottom of the platform chassis, and a chassis fixing device; the transformer support and the hydraulic cylinder fixing support are used for fixing thetest transformer and the hydraulic cylinder separately; the hydraulic cylinder is used for converting the test transformer in horizontal and vertical states; and the transformer support, the liftinghydraulic cylinder, and rotating shafts at the fixing support, the transformer supporting, and the lifting hydraulic cylinder cooperate with the lifting hydraulic cylinder to lift and lower the test transformer. The self-rising and falling large-capacity non-partial discharge test transformer platform and test method used in the converter valve hall can perform unilateral voltage application long-term induction withstand voltage and partial discharge measurement test on the valve hall field for a layered access converter transformer up to 1,100kV, so as to simply and efficiently carry out theunilateral voltage application long-term induction withstand voltage and partial discharge measurement test on the valve hall field of the converter transformer.

Description

technical field [0001] The invention relates to the technical field of electrical equipment insulation detection, in particular to a self-lifting large-capacity non-partial discharge test transformer platform used in a converter valve hall. Background technique [0002] my country's ±1100kV DC transmission project has entered the stage of comprehensive construction. The UHV converter transformer is one of the core main equipment of the UHV DC transmission project, and its AC induced withstand voltage and partial discharge tests at the installation site are the most sensitive and effective detection and verification technical means for the insulation performance of the equipment. According to the requirements of the manufacturer, the layered access UHV converter transformer used by the existing ±1100kV receiving end cannot use the existing commonly used symmetrical pressurization method, but can only be tested by unilateral pressurization. At this time, the valve side The ma...

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Problems solved by technology

[0004] Aiming at the above-mentioned deficiencies in the prior art, the present invention provides a self-elevating large-capacity non-PD test transformer platform used in the converter valve hall, which satisfies the test parameters for the voltage level and capacity requirements of the test transformer, and solves the problem of long-distance transportation. And the problem of limited lifting capacity on site, it can move on the test site, lift and fall autonomously, and make the on-site induction withstand voltage and partial discharge measurement test of the highest 1100kV converter transformer feasible, and it has long-distance transportation and transfer within the test site Convenience, rapid test deployment, and no need for auxiliary lifting equipment, realize on-site induction withstand voltage and partial discharge measurement tests of 1100kV UHV converter transformers

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