A Flexible Over-Frequency Generator Tripping Method Based on Power Flow Tracing

DOI

10.2991/eee-19.2019.19How to use a DOI?

Keywords

Frequency stability, Asynchronous interconnection, Over-frequency generator tripping, Power flow tracing

Abstract

With the rapid development of DC transmission in recent years in China, frequency stability has become a key issue for the normal operation of the entire asynchronous interconnected electric system. When the external DC transmission line experiences a fault, the frequency of the electric grid at sending end will inevitably rise, which may further cause frequency stability problem. Therefore, in order to prevent system frequency instability, over-frequency generator tripping devices are widely installed in major power plants. This paper proposes an over-frequency generator tripping scheme based on the power flow tracing technology. Some significant strategies including predetermination of maximum generator tripping capacity in each round, calculation of the power flow contribution level for each generator, sorting and grouping of generators to be tripped, optimized proportion of generator tripping, and the inspection of over tripping phenomenon are discussed elaborately. Finally, the validity and effectiveness of the proposed strategy is verified by conducting case studies.

Copyright

© 2019, 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  - Yi-xuan Chen
AU  - Zhi-hang Zhou
AU  - Ye He
AU  - Ling-fang Li
AU  - Li-bao Shi
PY  - 2019/07
DA  - 2019/07
TI  - A Flexible Over-Frequency Generator Tripping Method Based on Power Flow Tracing
BT  - Proceedings of the 2nd International Conference on Electrical and Electronic Engineering (EEE 2019)
PB  - Atlantis Press
SP  - 112
EP  - 117
SN  - 2352-5401
UR  - https://doi.org/10.2991/eee-19.2019.19
DO  - 10.2991/eee-19.2019.19
ID  - Chen2019/07
ER  -