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JACIII Vol.23 No.3 pp. 385-389
doi: 10.20965/jaciii.2019.p0385
(2019)

Short Paper:

The State Monitoring Method of Electronic Voltage Transformer Based on L-M Algorithm

Han Lian

School of Electronic Information Engineering, Henan Polytechnic Institute
Nanyang, Henan 473009, China

Received:
June 14, 2018
Accepted:
July 13, 2018
Published:
May 20, 2019
Keywords:
L-M algorithm, electronic voltage transformer, transfer function model, overvoltage amplitude, degenerative feedback
Abstract
The State Monitoring Method of Electronic Voltage Transformer Based on L-M Algorithm

Comparison of robustness of algorithms

In the traditional method of monitoring the state of electronic voltage transformer, there are problems of large monitoring error and weak robustness. Therefore, a new state monitoring method of electronic voltage transformer based on L-M algorithm is proposed. The relationship between input voltage and output voltage of capacitor voltage divider in electronic voltage transformer is obtained by using Laplasse transform. The transfer function model of electronic voltage transformer is constructed based on the relationship result and L-M algorithm. The transfer function model is used to analyze the frequency characteristics of the electronic voltage transformer and the range of normal measurement frequency, and then the partial pressure ratio of the electronic voltage transformer under the high frequency condition is derived. On this basis, by calculating the over voltage amplitude on the two sides of acquisition card in the electronic voltage transformer, the capacitance value between the two adjacent coaxial cylindrical cylinders of the capacitance divider in the electronic voltage transformer is obtained, thus the monitoring of the state of the electronic voltage transformer is completed. The experimental results show that the proposed method has low detection error and strong robustness, and can effectively improve the reliability of electronic voltage transformer.

Cite this article as:
H. Lian, “The State Monitoring Method of Electronic Voltage Transformer Based on L-M Algorithm,” J. Adv. Comput. Intell. Intell. Inform., Vol.23, No.3, pp. 385-389, 2019.
Data files:
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Last updated on Nov. 19, 2019