Paper Title:
A Novel Method for Measuring the Open-Circuit Loss and Short–Circuit Loss of Distribution Transformers Online
  Abstract

The paper proposes a novel method for online measuring the open-circuit loss (OCL) and the short-circuit loss (SCL) of distribution transformer DT, based on the consideration of the drawbacks of the offline measuring method, which is regarded as the mainly and traditionally used methods for measuring the OCL and the SCL of DT. The novel method avoids the drawbacks of the offline method which is not cost-effective and is not good for the reliability of the power supply. Firstly, the relation expression of the short-circuit impedance with respect to the voltage and current of the primary and secondary side is developed from the analysis of the equivalent circuit model of DT, and the relations between the SCL and OCL and the short-circuit impedance are also deduced according to power balance. Then, the online short-circuit impedance is computed by using linear regression technique and the value of online voltage and current of DT. Furthermore, according to the developed relations, the online OCL and the SCL of DT can be acquired by using the obtained short-circuit impedance. Numerical simulations have been carried out on Matlab/smulink and results verified feasibility and effectiveness of the novel method for online measuring the OCL and the SCL of DT.

  Info
Periodical
Chapter
Chapter 3: Sensor, Test and Signal Processing
Edited by
Zhixiang Hou
Pages
473-477
DOI
10.4028/www.scientific.net/AMM.128-129.473
Citation
X. Li, M. Y. Chen, S. Cheng, "A Novel Method for Measuring the Open-Circuit Loss and Short–Circuit Loss of Distribution Transformers Online", Applied Mechanics and Materials, Vols. 128-129, pp. 473-477, 2012
Online since
October 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Yong Jian Li
Abstract:Because of the extensive application of autotransformer in 500 kV power grid, the value of single-phase short-circuit current is generally...
1609
Authors: Nan Li, Yi Nan Wang, Hong Shan Nie, Hong Qi Yu, Hui Xu
Tooling Testing and Evaluation of Materials
Abstract:This paper presents the design method of a novel biomaterial impedance analyzer based on digital auto balancing bridge method. The system...
1259
Authors: Jing De Xia, Jia Le Suo Nan, Shou Shan Wu, Li Wang, Shi En He, Kai Liu
Chapter 12: Computer-Aided Design, Manufacturing and Engineering
Abstract:This paper proposes a novel enhanced transmission line pilot impedance algorithm based on parameter identification, which is defined by the...
4679
Authors: Guang Lei Li, Shu Min Sun, Yan Cheng, Hong Bo Li, Shuai Yuan
Chapter 5: Control, Monitoring and Computer Technologies
Abstract:To decrease short-circuit current, adjusting the power network operation by breaking transmission lines is the most economic and convenient...
527
Authors: Jun Mei, Bin Liu, Jian Yong Zheng, Lei Yao
Chapter 3: Electrotechnics, Electrical Machines and Electric Power Systems
Abstract:Considerable attention is given towards developing Superconducting fault current limiter (SFCL) due to increasing short circuit levels in...
471