Damping characteristics analysis on complex power grid with multi-infeed HVDC

DOI

10.2991/icaees-15.2015.93How to use a DOI?

Keywords

AC-DC line; low frequency oscillation (LFO); prony algorithm; damping

Abstract

In the modern electric power system,power systems expand day by day in China.More and more large capacity generators with fast control excitation systems are put into operation.Along with the introduction of the competition mechanism by power marketing,the possibility of operating at the edge of stability limit increases.The low frequency oscillation (LFO) occurs more often in the large-scale interconnected system,which threatens the safety of system operation.Furthermore,the AC/DC parallel transmission system and multi-infeed HVDC transmission system appear in several regional power systems in China,The operation conditions are more complicated,at the same time more flexible control means are brought in.Therefore,the nation-wide interconnected power systems make the LFO study in AC/DC power system necessary.The study is using of MATLAB software to build the models, based on PSS controller,which aim to study whether DC modulation effect on system low-frequency oscillation damping characteristics.And It is verified that DC modulation can improve the system damping characteristic basing on Prony algorithm.These conclusions could give some advices to damping characteristics analysis of the complex electric power system.

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  - Zhijian Liu
AU  - Dongdong Wang
PY  - 2015/07
DA  - 2015/07
TI  - Damping characteristics analysis on complex power grid with multi-infeed HVDC
BT  - Proceedings of the 3rd International Conference on Advances in Energy and Environmental Science 2015
PB  - Atlantis Press
SP  - 499
EP  - 502
SN  - 2352-5401
UR  - https://doi.org/10.2991/icaees-15.2015.93
DO  - 10.2991/icaees-15.2015.93
ID  - Liu2015/07
ER  -