Discrete Wavelet Transform Based Fault Analysis and Identification in Flexible HVDC Transmission System

DOI

10.2991/ifeesm-15.2015.149How to use a DOI?

Keywords

HVDC flexible; Mallat algorithm; three-phase ground fault; DC line fault.

Abstract

The accuracy of fault detection is helpful to improve the stability of power quality. With the development of new energy, the technology of flexible HVDC transmission has been gradually mature, but there are still some problems. In this paper, the Mallat algorithm is used to detect the DC line fault and three-phase grounding fault in the flexible HVDC system. The high frequency wavelet coefficient amplitude obtained by Mallat decomposition is used to distinguish the fault type. The simulation results show that after wavelet decomposition of fault voltage has the modulus maxima. We can judge the fault type by the value of the modulus maximum, its maximum value is the starting and ending time of the fault, and the fault detection accuracy error is within 1%.

Copyright

© 2015, 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  - Zhiguo Zhou
AU  - Qiying Jin
AU  - Yi Zhang
PY  - 2015/09
DA  - 2015/09
TI  - Discrete Wavelet Transform Based Fault Analysis and Identification in Flexible HVDC Transmission System
BT  - Proceedings of the 2015 International Forum on Energy, Environment Science and Materials
PB  - Atlantis Press
SP  - 799
EP  - 803
SN  - 2352-5401
UR  - https://doi.org/10.2991/ifeesm-15.2015.149
DO  - 10.2991/ifeesm-15.2015.149
ID  - Zhou2015/09
ER  -