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Universal mutual inductor verification equipment and mutual inductor verification method

A general-purpose technology for transformer calibration, applied in the field of transformer calibration, can solve the problems of calibration equipment inconvenience, multiple disassembly and assembly affecting calibration efficiency, etc., to improve work efficiency, ratio difference and angle difference accuracy high effect

Pending Publication Date: 2021-12-21
国网四川省电力公司营销服务中心
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: the existing transformer calibration equipment often ignores the error caused by the calibration process of the transformer calibration equipment itself, and for the two types of transformers of electromagnetic transformer and electronic transformer It is necessary to use their own calibrator, and the maintenance process requires multiple disassembly and assembly, which affects the calibration efficiency, and it is very inconvenient to carry multiple calibration equipment. The purpose of the present invention is to provide a universal transformer calibration equipment and transformer calibration method , to solve the above technical problems

Method used

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  • Universal mutual inductor verification equipment and mutual inductor verification method
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  • Universal mutual inductor verification equipment and mutual inductor verification method

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Embodiment 1

[0052] This embodiment provides a general transformer calibration equipment, such as figure 1 As shown, it includes: a primary voltage and current source 1, a standard transformer 2, a difference calibration module 3, a direct calibration module 4, an error monitoring module 5 and a calibration calculation module 6;

[0053] The primary voltage and current source 1 provides voltage or current for the standard transformer 2 and the tested transformer at the same time;

[0054] The standard transformer calibration parameters and the tested transformer calibration parameters required by the difference calibration module 3 sampling difference method;

[0055] The direct calibration module 4 samples the standard transformer calibration parameters and the tested transformer calibration parameters required by the direct method; at the same time, the error monitoring module 5 monitors the process error during the working process of the direct calibration module 4 and the difference c...

Embodiment 2

[0067] A method for calibrating a transformer, using the general-purpose transformer calibrating equipment of the previous embodiment, comprising the steps of:

[0068] S1. Provide voltage or current for the standard transformer and the tested transformer at the same time;

[0069] S2. Calibration parameters of the standard transformer and the calibration parameters of the tested transformer required by the sampling difference method or the direct method, and monitor the process error in the sampling process at the same time;

[0070] S3. Obtain the ratio difference and angle difference of the tested transformer according to the calibration parameters of the standard transformer and the calibration parameter of the tested transformer, and perform process error compensation.

[0071] The field application shows that the developed general-purpose transformer of distribution network transformer has high integration, small size, convenient transportation and wiring, and is suitabl...

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Abstract

The invention discloses universal mutual inductor verification equipment and a mutual inductor verification method. A difference verification module and a direct verification module can verify analog quantity and digital quantity output by an electronic mutual inductor respectively; the device not only can calibrate the metering performance of a traditional electromagnetic mutual inductor, but also can calibrate the metering performance of an electronic mutual inductor, and when different types of mutual inductors are handled in the maintenance process, the verification equipment does not need to be disassembled and assembled for many times, so that the working efficiency is effectively improved; for errors caused by the verification process of the mutual inductor verification equipment, process errors in the working process of the direct verification module and the difference verification module are monitored through an error monitoring module, the process errors are made to participate in the calculation process of the ratio error and the angle error, and the ratio error and the angle error after compensation are higher in accuracy.

Description

technical field [0001] The invention relates to the technical field of transformer calibration, in particular to a universal transformer calibration device and a transformer calibration method. Background technique [0002] Transformer calibrator is a multi-functional and dual-parameter AC measuring instrument, mainly used to test the basic errors of various types and levels of power transformers or instrument transformers and their auxiliary equipment, and can be used for related Electrical metering equipment performs multifunctional performance testing, and the transformer calibrator is one of the indispensable important equipment for the development of the electric power industry. Therefore, vigorously developing transformer calibration devices is of great significance to improving the research and production level of transformers. [0003] At present, for electromagnetic transformers and electronic transformers, due to the different principles of the two transformers, t...

Claims

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Application Information

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IPC IPC(8): G01R35/02
CPCG01R35/02
Inventor 刘鹍覃剑刘刚李金嵩李福超史强曾兰王睿晗王豪
Owner 国网四川省电力公司营销服务中心
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