Mobile measuring device and alignment control method for high-voltage power-frequency AC withstand voltage system

Abstract

The invention discloses that the invention discloses a mobile measuring device for a high-voltage power frequency AC withstand voltage system, which includes a current-limiting resistor and a measuring mechanism. One end of the current-limiting resistor is provided with a conductive column in contact with the test transformer, and the other end is provided with a connecting seat. , the top of the measuring mechanism is provided with a conductive contact seat in contact with the connecting seat, the current limiting resistor is supported by a supporting platform, and the supporting platform is fixed on the mobile base through a lifting mechanism, and the bottom of the measuring mechanism is The end is fixed on the lateral movement mechanism, and the lateral movement mechanism is installed on the mobile base. The current-limiting resistor and capacitor voltage divider of the system are installed on the electric vehicle frame to form a platform. The height of the platform can be adjusted, which can realize electric movement conveniently and quickly. The forward and backward operation is simple and convenient, realizing the mobility of the system. The space has been optimized to the greatest extent; at the same time, the platform can realize the fast and accurate positioning of the connection part of the current limiting resistor and the connection part of the test transformer, saving a lot of manpower.

Description

Technical field [0001] The invention relates to a 500kV power frequency AC withstand voltage system measuring device. Background technique [0002] In 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. The AC withstand voltage test is the most effective and direct method to identify the insulation strength of power equipment, and is an important part of preventive tests. In addition, since the AC withstand voltage test voltage is generally higher than the operating voltage, the equipment has a larger safety margin after passing the test. Therefore, 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 high test voltage requirements, there are correspon...

AI Technical Summary

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

Images