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Impact of distributed generation on transient‐based fault location techniques in distribution networks
Author(s) -
Feizifar Behnam,
Usta Omer,
Haghifam Mahmoud Reza
Publication year - 2015
Publication title -
ieej transactions on electrical and electronic engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.254
H-Index - 30
eISSN - 1931-4981
pISSN - 1931-4973
DOI - 10.1002/tee.22079
Subject(s) - emtp , transient (computer programming) , fault (geology) , matlab , wavelet , electronic engineering , engineering , wavelet transform , amplitude , electric power system , power (physics) , computer science , physics , artificial intelligence , quantum mechanics , seismology , geology , operating system
This paper demonstrates the effect of conventional distributed generation (DG) on fault location techniques based on transient signal analysis. DG penetration in distribution networks deviates the route‐specific frequencies generated by fault traveling waves propagating along the feeders and laterals. The amount of these deviations is proportional to the rated power of a certain DG unit. A validated fault location procedure is used to clarify this effect. Fault‐generated voltage transient signals are analyzed using continuous wavelet transform (CWT). These signals are captured by a recording device generally placed at the main feeder supplying the distribution systems. The route‐specific frequencies are acquired by the wavelet amplitude spectrum of transient signals. Using this technique, the relevance between the CWT‐recognized specific frequencies and those attained by mathematical definition determines the fault position. A six‐bus radial test distribution feeder is simulated within the EMTP‐RV program, and analysis of relevant transient signals is carried out using MATLAB programming language. © 2015 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.