A Transient Stability Numerical Integration Algorithm for Variable Step Sizes Based on Virtual Input

Yifan Gao, Jianquan Wang, Tannan Xiao and Daozhuo Jiang
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Yifan Gao: College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China
Jianquan Wang: College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China
Tannan Xiao: College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China
Daozhuo Jiang: College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China

Energies, 2017, vol. 10, issue 11, 1-21

Abstract: In order to reduce the online calculations for power system simulations of transient stability, and dramatically improve numerical integration efficiency, a transient stability numerical integration algorithm for variable step sizes based on virtual input is proposed. The method for fully constructing the nonhomogeneous virtual input for a certain integration scheme is given, and the calculation method for the local truncation error of the power angle for the corresponding integration scheme is derived. A step size control strategy based on the predictor corrector variable step size method is proposed, which performs an adaptive control of the step size in the numerical integration process. The proposed algorithm was applied to both the IEEE39 system and a regional power system (5075 nodes, 496 generators) in China, and demonstrated a high level of accuracy and efficiency in practical simulations compared to the conventional numerical integration algorithm.

Keywords: transient stability; numerical integration; variable step size; virtual input (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2017
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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