High voltage power frequency AC withstand voltage system measurement platform

Abstract

The invention discloses a high-voltage power-frequency AC voltage-withstanding system measuring platform comprising a current-limiting resistor and a measuring mechanism. One end of the current-limiting resistor is equipped with a conductive pole in contact with a test transformer. The other end of the current-limiting resistor is equipped with a connecting seat. The top of the measuring mechanism is equipped with a contact seat in contact and conductive with the connecting seat. The current-limiting resistor is supported by a support table. The support table is fixed to a mobile pedestal through an elevating mechanism. The bottom of the elevating mechanism is fixed to a lateral movement mechanism installed on the mobile pedestal. The current-limiting resistor and a capacitive voltage divider are installed on an electric vehicle frame to form a platform. The platform is adjustable in height, can be conveniently, rapidly, and electrically moved, is simple and convenient in forward and backward operation, achieves the mobility of the system, and optimizes the hall space to the utmost extent. Further, the platform may fast and accurately position a current-limiting resistor connecting part and a test transformer connecting part and saves a plenty of manpower.

Description

technical field [0001] The invention relates to a measuring device for a 500kV power frequency AC withstand voltage system. Background technique [0002] During the operation of power equipment, the insulation will gradually deteriorate under the action of electric field, temperature and mechanical vibration for a long time, including overall deterioration and partial deterioration, forming defects. AC withstand voltage test is the most effective and direct method to identify the insulation strength of electrical equipment, and is an important part of preventive testing. In addition, since the AC withstand voltage test voltage is generally higher than the operating voltage, the equipment has a large safety margin after passing the test, so the AC withstand voltage test is an important means to ensure the safe operation of power equipment. [0003] Under power frequency conditions, due to the large capacitance of the tested product or the high requirements for the test volta...

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Problems solved by technology

[0005] 1. The current-limiting resistor and capacitive voltage divider are directly welded with the experimental transformer. Once the equipment fails, it cannot be separated and repaired quickly;

[0006] 2. The current-limiting resistor and capacitor voltage divider are large in size, and it is difficult to move them by manpower. In the process of separation and docking, large mechanical equipment such as cranes are needed, which consumes a lot of manpower and material resources;

[0007] 3. When docking, the relative position of the device needs to be manually observed and the observer and the operator need to cooperate. Due to the large size of the experimental device, it is necessary to predict the relative position of the device based on experience, and there is a large error

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