A Multiple Time-Step Formulation of Frequency-Dependent Network Equivalents

Journal of control, automation and electrical systems

article

Camara, Felipe¹  Lima, Antonio C. S.¹ 

[1] Federal University of Rio de Janeiro

关键词: Network transients;    Multirate simulation;    Rational approximation;   

DOI  :  10.1007/s40313-018-0366-y

学科分类：自动化工程

来源: Springer

【 摘 要 】

This paper describes a novel approach for electromagnetic transient simulations of frequency-dependent network equivalents featuring variable time-step length along the simulation run. This demands an inclusion of an intermediate step allowing reinitialization of state variables without a need to modify the structure of companion networks adopted by EMTP-like programs for time-domain simulations. Besides keeping the accuracy of the classic EMTP modeling, the proposed formulation provides a sensible gain in the overall computation time and also a smooth transition regardless of the change in time-step length. This approach provides a more efficient realization of admittance-based models is achieved in a straightforward way, and the computational burden is considerably reduced without a significant loss of accuracy.

【 授权许可】

CC BY