High-voltage power-frequency AC voltage-withstanding system mobile measurement device and alignment control method thereof

Abstract

The invention discloses a high-voltage power-frequency AC voltage-withstanding system mobile measurement device, which comprises a current-limiting resistor and a measurement mechanism, wherein one end of the current-limiting resistor is provided with a conductive column contacted with a test transformer and the other end is provided with a connection seat; the top end of the measurement mechanism is provided with a contact seat in contact conduction with the connection seat; the current-limiting resistor is supported by a supporting table; the supporting table is fixed on a mobile base via a lifting mechanism; and the bottom end of the measurement mechanism is fixed on a lateral movement mechanism, and the lateral movement mechanism is arranged on the mobile base. The current-limiting resistor and a capacitive voltage divider of the system are arranged on an electric vehicle frame to form a platform, the height of the platform is adjustable, electric movement can be realized conveniently and quickly, forward and backward operation is simple and convenient, the system is movable, and hall space is optimized to the largest degree; and the platform can realize quick and accurate positioning of the current-limiting resistor connection part and the test transformer connection part, and a large amount of manpower is saved.

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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