Design of Capacity Loss Tester of Power Transformer

Wen Cheng Pan

doi:10.4028/www.scientific.net/AMM.263-266.378

Paper Titles

Simulation and Analysis of Linear Multiple User Detection Based on Simulink
p.354

An Analysis of Temporal Diffraction of a Chirped Femtosecond Laser Pulse by a Circle Aperture
p.360

An Improved Video Mosaic Block Detection Method on the Statistics of Pixel Difference across the Boundary of Macroblock and Suspected Mosaic Blocks
p.365

Defect Reconstruction in Laminated Composites by Ultrasonic Imaging
p.371

Design of Capacity Loss Tester of Power Transformer
p.378

Eliminating Linear Positioning Bias with Polynomial Approximation in AGPS Method
p.383

Research and Design of the Remote Monitoring System for Power Quality in Wind Farms
p.387

Study on Liquid Volume Measurement Based on Wireless Transmission and Hydraulic Sensors
p.392

Ball Mill Load State Recognition Based on Kernel PCA and Probabilistic PLS-ELM
p.398

HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 263-266Design of Capacity Loss Tester of Power...

Design of Capacity Loss Tester of Power Transformer

Abstract:

A capacity loss tester for no-load and with-load testing of power transformer has been developed. The tester has the ability of sampling the three-phase voltage and current simultaneously. Programmable counter array (PCA) unit in MPU, which captures zero-crossing of signal by the function of positive and negative edge trigger, is applied to the average phase detection of zero-crossing in bi-direction, in order to acquire the phase difference and period accurately. In terms of software, synchronism sampling method based on real-time parameter self-optimizing is adopted to minimize period truncation error, and the measuring accuracy is improved. The capacity of the power transformer is discriminated by table-look-up method in software, corresponding to different load loss. The testing result is converted from the value under testing temperature to the value under the condition of reference temperature (75°C).

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Applied Mechanics and Materials (Volumes 263-266)

Pages:

378-382

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.263-266.378

Citation:

Cite this paper

Online since:

December 2012

Authors:

Wen Cheng Pan

Keywords:

Capacity Distinguishing, Intelligence Synchronous Sampling, Power Loss Measuring, Power Transformer, Reference Temperature Convert

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] GB/T6451-1999. Specification and technical requirements for three-phase oil-immersed power transformer[S].Beijing:TC44 of PRC, 1999.

Google Scholar

[2] PAN Wen-cheng. The development of an auto-tester of current transformer's volt-ampere characteristic[J]. Electric Power Automation Equipments 2006,26(5):50~53.

Google Scholar

[3] Zhang ke,Lv fangcheng,Wangyongqian. Design of based data acquisition unit for on-line monitoring system electrical equipment[J]. Electric Power Automation Equipment. 2003, 23 (4): 49~50

Google Scholar

[4] CAO Xiaoning ,LONG Kewei ,CHEN Xiaohu. AC Sample Based Microcomputer Transducer of Electric Variables and Its Self Test Technique[J]. Electric Power Automation Equipment. 2000,20(6):23~26.

Google Scholar

[5] PAN Wen- cheng. Intelligent sampling with parameter self – optimizing in power frequency measuring. Electric Power Automation Equipment. 2007,27(6):66~71.

Google Scholar

[6] Jiang Fudai. Development of capacity measuring instrument for distribution transformer [J]. Electric Power Industry Application, 2007,5:131~135.

Google Scholar

[7] Zhou Wensheng, LiI Lin. Study on transformer capacity testing equipment based on impedance voltage method [J].Hunan Electric Power, 2006, 26 (5): 9~14.

Google Scholar