Vehicle-mounted 1,000-kilovolt voltage transformer verifying device

Abstract

The invention discloses a vehicle-mounted 1,000-kilovolt voltage transformer verifying device. The vehicle-mounted 1,000-kilovolt voltage transformer verifying device comprises a power frequency voltage regulator, and is characterized in that the power frequency voltage regulator is connected with a matching transformer, the output end of the matching transformer is connected with a multi-tap electric reactor in parallel, one end of the multi-tap electric reactor is connected to the ground, the matching transformer is connected with a boosting transformer, the output end of the boosting transformer is connected with a 1,000-kilovolt standard voltage transformer and a 1,000-kiliovlt voltage transformer to be tested in parallel, one end of the boosting transformer is connected to the ground, and the power frequency voltage regulator, the matching transformer, the boosting transformer and the 1,000-kilovolt standard voltage transformer are arranged on a carriage in sequence. The multi-tap electric reactor is utilized for performing compensation on the input side of the boosting transformer, the requirement for the capacity of a field test power source is lowered, the purpose of boosting verifying is achieved, and transportation and field testing are facilitated due to vehicle mounting.

Description

technical field [0001] The invention relates to a vehicle-mounted 1000kV voltage transformer calibration device. Background technique [0002] The 1000kV standard voltage transformer, as the calibration standard of the voltage transformer in an important link of UHV power transmission, is related to the accuracy of gateway measurement and the fairness of trade settlement, and its role is very important. [0003] The on-site verification of 1000kV voltage transformer usually uses series resonance method for step-up verification, that is, the power frequency resonance step-up device is used for step-up verification of the tested 1000kV voltage transformer. For example, the application number is 2011101435149, the name is the Chinese patent of partial discharge and withstand voltage test vehicle of power transformer, the application number is 2010105177974, the name is a Chinese patent of an integrated power voltage transformer on-site calibration equipment, etc., because the t...

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Problems solved by technology

For example, the application number is 2011101435149, the name is the Chinese patent of partial discharge and withstand voltage test vehicle of power transformer, the application number is 2010105177974, the name is a Chinese patent of an integrated power voltage transformer on-site calibration equipment, etc., because the tested 1000kV The capacitance of the voltage transformer to the ground is different, and the adjustment of the inductance of the resonant adjustable reactor is complicated, and the operation is cumbersome. It needs to be corrected many times to achieve the inductance required for the test, and the labor intensity is high.

Moreover, the separated resonant step-up power supply and 1000kV standard voltage transformer are large in size and heavy in weight, so cranes and other equipment must be used to transport and install them on site.

The entire calibration system has a lot of equipment, low integration, heavy weight, many on-site wiring, and low calibration efficiency

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