An anti-jamming 1000kv UHV voltage transformer vehicle-mounted calibration platform and its calibration method

Abstract

The invention discloses an anti-jamming 1000kV UHV voltage transformer vehicle-mounted calibration platform and a calibration method thereof, including upper and lower platforms, a lift, a series-type 1000kV UHV standard voltage transformer and a series-type multi-tap resonant reactor; The voltage transformer includes upper-level and lower-level standard voltage transformers; the series multi-tap resonant reactor includes the first and second main resonant reactors and fine-tuning resonant reactors. The calibration method is as follows: wiring; raising the elevator to the height required for the upper platform test; lowering the elevator to the original minimum height; performing on-site error verification, the step-down and step-down are completed remotely by the remote controller, and the transformer calibrator automatically records and stores Error data; raise the elevator to the test height of the upper platform; lower the elevator to the original minimum height; remove the equalizing ring and calibration line, and put the components back into the test box. The invention reduces the interference of the test power supply unit to the standard device unit, and the error measurement is accurate and reliable.

Description

technical field [0001] The invention relates to an anti-jamming 1000kV UHV voltage transformer vehicle-mounted calibration platform and a calibration method thereof, which are used for error testing of 1000kV UHV voltage transformers and belong to the technical field of UHV voltage transformer testing. Background technique [0002] In recent years, my country's energy distribution is irrational, the contradiction between power supply and demand imbalance has become more and more prominent, and environmental problems such as smog caused by traditional energy sources have become more and more serious. The development of UHV power grids and the promotion of clean energy development have become the key to optimizing energy allocation and Important methods and guiding ideology to reduce environmental pollution. At present, the 1000kV AC UHV project has entered the stage of large-scale construction. By 2020, the State Grid is expected to build "five vertical and five horizontal lin...

AI Technical Summary

Problems solved by technology

[0003] The voltage transformer belongs to the installation type equipment, which is fixed on the site, and the error calibration can only be performed on site. The corresponding test equipment and instruments need to be transported to the test site for testing. At present, the error calibration equipment of UHV voltage transformers is publicly available. There are two forms, one is the vehicle-mounted platform form, patent 1: the publication date is 2014-12-31, the publication number is 204065390U, and the patent name is a vehicle-mounted 1000kV voltage transformer calibration device. The UHV The voltage transformer error calibration equipment is composed of power frequency voltage regulator, matching transformer, compensation reactor, step-up transformer and standard voltage transformer, among which the step-up transformer and 1000kV standard voltage transformer adopt the integrated design of GIS meter and source , sealed in the same GIS pipeline tree, although the size of the equipment and the wiring workload are reduced, but a large number of magnetic circuits of the step-up transformer will flow through the magnetic circuit of the standard voltage transformer, which greatly affects the error of the 1000kV voltage transformer measurement, and may even be misjudged

The other is in the form of a test vehicle. Patent 2: The publication date is 2014-04-30, and the publication date is 103754148A. The patent name is a fully automatic UHV voltage test vehicle. The UHV voltage transformer error calibration equipment introduced by this patent is made by Composed of series test transformers, standard voltage transformers and auxiliary equipment, the integrated design of the lower-level standard device and the lower-level power supply, the integrated design of the upper-level standard device and the upper-level power supply, the overall equipment setting is in a box-type truck; the integration of the test vehicle is very high , same as patent 1, the integrated design of power supply and standard device has a great influence on error measurement, and is affected by the space of the test vehicle body, and the insulation margin is also small

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