Study on Out-of-step Oscillation Based on Oscillation Energy Flow

DOI

10.2991/iea-15.2015.34How to use a DOI?

Keywords

out-of-step oscillation; direct method; Energy structure; oscillation energy flow.

Abstract

With the scale of interconnected power systems becoming larger and larger, asynchronous oscillation occurs increasingly frequently. Under this circumstance, the identification of out-of-step oscillation along with corresponding separation strategy plays a vital role in preventing catastrophic black outage caused by spreading accidents. During out-of-step oscillation process, electric quantities vary so rapidly and dramatically that traditional methods of oscillation analysis, like small signal analysis, are no longer appropriate in this scenario. In this paper, direct method is used to study the dynamic characteristics of out-of-step oscillation. Based on Dirac structure and port Hamilton, energy structure is constructed and extended to electric power system. Then oscillation energy flow is derived and used in further research on the electrical characteristics’ variation rules during out-of-step oscillation process. With analytic functions in the equivalent two-generator system, the problem of out-of-step oscillation is expounded in terms of oscillation energy flow on the tie line.

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  - Chen Yanbo
AU  - Wang Yangzi
AU  - Ma Jin
PY  - 2015/09
DA  - 2015/09
TI  - Study on Out-of-step Oscillation Based on Oscillation Energy Flow
BT  - Proceedings of the AASRI International Conference on Industrial Electronics and Applications (2015)
PB  - Atlantis Press
SP  - 135
EP  - 138
SN  - 2352-5401
UR  - https://doi.org/10.2991/iea-15.2015.34
DO  - 10.2991/iea-15.2015.34
ID  - Yanbo2015/09
ER  -