The Influence of Stray Capacitor on the Harmonic Transmission Characteristics of CVT

DOI

10.2991/ammsa-18.2018.76How to use a DOI?

Keywords

capacitor voltage transformer; harmonic; transfer function; frequency characteristics; stray capacitance

Abstract

In view of the fact that the harmonic transmission characteristics of capacitive voltage transformers (CVT) are unclear and not suitable for harmonic voltage measurement, considering the influence of the internal stray capacitance factors, an equivalent circuit model is established and analyzed by transfer function. Stray capacitance has a significant effect on the harmonic transmission characteristics of CVTs. The reference of the distributed capacitance in the CVT is calculated based on the structure of the CVT circuit element in combination with the distributed capacitance derivation. Based on the MATLAB/Simulink simulation tool, the influence of each stray capacitance on the transmission characteristics of various harmonics of CVT was studied, and the relative error caused by stray capacitance change was quantified. Studies have shown that the stray capacitance of the compensation affects the frequency range after the extremum point of the CVT amplitude transfer characteristic, the stray capacitance of the primary side of the intermediate transformer and the coupling capacitance between the primary side and the secondary side affect the entire frequency of the CVT amplitude transfer characteristic. In the segment, the stray capacitance to the ground on the secondary side of the intermediate transformer has no effect on the harmonic transmission characteristics of the CVT.

Copyright

© 2018, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Weilun Xie
AU  - Feng Xue
AU  - Peicheng Xie
AU  - Jieting Wu
AU  - Dan Peng
PY  - 2018/05
DA  - 2018/05
TI  - The Influence of Stray Capacitor on the Harmonic Transmission Characteristics of CVT
BT  - Proceedings of the 2018 2nd International Conference on Applied Mathematics, Modelling and Statistics Application (AMMSA 2018)
PB  - Atlantis Press
SP  - 365
EP  - 369
SN  - 1951-6851
UR  - https://doi.org/10.2991/ammsa-18.2018.76
DO  - 10.2991/ammsa-18.2018.76
ID  - Xie2018/05
ER  -