A method for error calibration of vehicle-mounted easy-to-maintain voltage transformers

A technology of voltage transformer and transformer calibrator, which is applied in the direction of instruments, measuring electrical variables, measuring devices, etc., can solve the problem of on-site error calibration of 500kV voltage transformers, affecting the accuracy of measurement data of the measurement system, and inability to Provide high-quality power supply to meet the problems of transformers, and achieve the effect of easy traceability and maintenance, convenient equipment placement, and easy mobile transportation.

CN105093159BInactive Publication Date: 2018-06-29STATE GRID CORP OF CHINA +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2018-06-29
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses an error calibration method for a vehicle-mounted easy-to-maintain voltage transformer, which belongs to the technical field of transformer testing. The vehicle-mounted easy-maintenance voltage transformer error checking system of the present invention includes a vehicle-mounted platform, on which a standard voltage transformer, a test booster and a test box are arranged, and the standard voltage transformer is an inflatable epoxy barrel type Standard voltage transformer, the test booster is an inflatable epoxy barrel test booster, the test box is fixed with a voltage regulation control power supply, and the test box is also equipped with a transformer calibrator and a voltage load box , a remote controller and connecting wires, the multi-combination compensating reactor is set in the voltage regulation control power supply. The error calibration system of the present invention can be used for on-site calibration of 500kV-220kV voltage transformers. The height of the vehicle-mounted system is only 2.2m in the transportation state. The system is convenient for mobile transportation and traceability maintenance. The data is stable and reliable.
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Description

technical field

[0001] The invention belongs to the technical field of transformer testing, and in particular relates to a vehicle-mounted easy-maintenance voltage transformer error checking system and a method thereof. Background technique

[0002] The metering transformer is an important part of the power transmission metering unit. The accuracy of its metering is related to the fairness and justice of trade settlement. Therefore, it is very important to accurately check the error of the metering transformer. In order to ensure the accuracy of measuring transformers, the country mandates error verification of measuring transformers. Measurement transformers are installed equipment and fixed on site, so they can only be checked for errors on site. The corresponding verification regulations JJG1021-2007 "Power Transformers" need to transport the corresponding test equipment and instruments to the test site. on site.

[0003] For the error calibration of 500kV voltage trans...

Examples

Embodiment 1

[0044] This embodiment describes the present invention in detail by taking an error checking system of a 500kv voltage transformer and its specific implementation process as an example.

[0045] A vehicle-mounted easy-to-maintain voltage transformer error checking system, comprising a vehicle-mounted platform 6, on which a standard voltage transformer 2, a test booster 4 and a test box 5 are independently arranged, and the standard voltage transformer 2 It is an inflatable epoxy barrel-type standard voltage transformer, the test booster 4 is an inflatable epoxy barrel-type test booster, and the bottom of the standard voltage transformer 2 and the test booster 4 are fixed with a metal base 3 , the standard voltage transformer 2 and the test booster 4 are fixedly connected to the vehicle-mounted platform 6 through the metal base 3 respectively, and the shells on both sides of the upper end of the standard voltage transformer 2 and the test booster 4 are respectively threaded Or ...