Full Text:   <367>

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CLC number: TM744

On-line Access: 2019-08-29

Received: 2017-06-15

Revision Accepted: 2018-01-26

Crosschecked: 2019-08-15

Cited: 0

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Citations:  Bibtex RefMan EndNote GB/T7714


Jian-quan Wang


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Frontiers of Information Technology & Electronic Engineering  2019 Vol.20 No.8 P.1119-1132


Fast emergency control strategy calculation based on dynamic equivalence and integral sensitivity

Author(s):  Yi-fan Gao, Jian-quan Wang, Tan-nan Xiao, Dao-zhuo Jiang

Affiliation(s):  College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China

Corresponding email(s):   wangjq@zju.edu.cn

Key Words:  Emergency control, Transient stability, Numerical integration, Dynamic equivalence, Integral sensitivity

Yi-fan Gao, Jian-quan Wang, Tan-nan Xiao, Dao-zhuo Jiang. Fast emergency control strategy calculation based on dynamic equivalence and integral sensitivity[J]. Frontiers of Information Technology & Electronic Engineering, 2019, 20(8): 1119-1132.

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To simplify the transient stability analysis of a large-scale power system and realize real-time emergency control, a fast transient stability simulation algorithm based on real-time dynamic equivalence is proposed. Generator models are grouped and aggregated according to a fast numerical integration. A fast calculation method of the admittance matrix is then proposed to calculate the parameters of an equivalent system, and numerical integration is performed using the obtained equivalent system. Then, based on integral sensitivity, a new fast emergency control strategy is proposed for the equivalent system. The final emergency control strategy is obtained by mapping the control strategy for the equivalent system back to the original system. The results of a simulation on an East China Power System that includes 496 generators and 5075 buses show that the suggested algorithm can output an accurate transient stability simulation result and form an effective emergency control strategy. The proposed algorithm is much faster than the existing solutions and has the potential to be used for online pre-decision.




Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article


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