Ybus matrix

Ybus matrix

Security Analysis

Published in Leonard L. Grigsby, Power System Stability and Control, 2017

In the DC approach, this Jacobian is approximated by the B′ (susceptance) matrix representing the imaginary part of the Ybus matrix. This expression is used to calculate the updated angles following a loss of any system component. With appropriate numerical techniques, it is straightforward to update only necessary elements of the equation. Once the angles are calculated, the power flows of all lines can be deducted. Hence, it is possible to check for line limit violation.

Fitness-distance balance based artificial ecosystem optimisation to solve transient stability constrained optimal power flow problem

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Journal Information

Published in Journal of Experimental & Theoretical Artificial Intelligence, 2022

Yusuf Sonmez, Serhat Duman, Hamdi T. Kahraman, Mehmet Kati, Sefa Aras, Ugur Guvenc

where NG is the number of generator buses, and the L-index value of the jth bus is defined as Lj. YLL and YLG are computed from the system YBUS matrix.

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Security Analysis

Fitness-distance balance based artificial ecosystem optimisation to solve transient stability constrained optimal power flow problem