Power frequency calibration power supply and equipment for miniaturized extra-high voltage transformer

A technology of voltage transformer and calibration power supply, which is applied in the direction of high-efficiency power electronic conversion, instruments, and measurement electronics, which can solve the problems of large volume of single-phase power frequency power supply, and achieve small footprint, small power supply volume, and small size Effect

Inactive Publication Date: 2020-11-13
WUHAN PANDIAN TECH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present application provides a miniaturized UHV voltage transformer power frequency calibration power supply and equipment to solve the technical problem of large single-phase power frequency power supply in the related art

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  • Power frequency calibration power supply and equipment for miniaturized extra-high voltage transformer
  • Power frequency calibration power supply and equipment for miniaturized extra-high voltage transformer
  • Power frequency calibration power supply and equipment for miniaturized extra-high voltage transformer

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Embodiment Construction

[0030] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, but not all of them. Based on the embodiments in the present application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present application.

[0031] see figure 1 and figure 2 As shown, the embodiment of the present application provides a power frequency calibration power supply for a miniaturized UHV voltage transformer, which includes a voltage regulation control unit 1 , an excitation transformer 2 and an UHV reactor 3 with adjustable inductance.

[0032] The voltage reg...

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Abstract

The application relates to a power frequency verification power supply and equipment of a miniaturized extra-high voltage transformer. The power supply comprises a voltage regulation control unit, anexcitation transformer and an inductance-adjustable extra-high voltage reactor, wherein the voltage regulation control unit comprises a first input winding and a first output winding, the first inputwinding is connected with a transformer station power supply, the exciting transformer comprises a second input winding and at least one second output winding, the second input winding is connected with the first output winding in parallel, and a high-voltage end of the second output winding outputs a high-voltage signal, the extra-high-voltage reactor comprises a plurality of reactor modules, each reactor module comprises a plurality of reactor units connected in series, one end of each reactor module is connected with the high-voltage end of the second output winding after the reactor modules are sequentially connected in series, and the other end of each reactor module outputs power supply signals. The power frequency verification power supply provided by the invention is small in size,can achieve higher-precision compensation, and is better in power compensation effect.

Description

technical field [0001] The present application relates to the technical field of UHV power grids, in particular to a power frequency calibration power supply and equipment for miniaturized UHV voltage transformers. Background technique [0002] The UHV voltage transformer is the core equipment for sensing the voltage signal of the UHV power grid, and is a key component of the power system for metering, measurement and protection. Its accurate, stable and reliable operation is related to the fairness of electricity trade settlement and the safety of power grid operation Therefore, it is necessary to conduct initial and weekly inspections on the UHV voltage transformer operating site. [0003] The correlation between the error and frequency of AC UHV voltage transformers requires that the on-site calibration power supply must be a single-phase power frequency power supply, and it must be realized by a high-precision compensation method. In the related art, the single-phase po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R35/02G01R31/00H02M1/42
CPCG01R31/00G01R35/02H02M1/425Y02B70/10
Inventor 杨剑陈琳杨明孙军张淞珲徐新光陈江洪
Owner WUHAN PANDIAN TECH
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