Campus Units
Electrical and Computer Engineering
Document Type
Article
Publication Version
Submitted Manuscript
Publication Date
2018
Journal or Book Title
IEEE Transactions on Power Systems
Abstract
Once the critical clearing time of a fault leading to transient instability has been computed, it is desirable to quantify its dependence on system parameters. We derive for a general power system model a new and exact formula for the first order sensitivity of the critical clearing time with respect to any system parameter. The formula is evaluated by integrating variational equations forward in time along the base case faulton trajectory and integrating adjoint variational equations backward in time along the post-fault trajectory. The computation avoids recomputing the critical clearing time for each parameter change and gives insight into how parameters influence power system transient stability. The computation of the sensitivity of the critical clearing time with respect to load impedances and generator inertias is illustrated on a 39-bus system.
Rights
Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Copyright Owner
IEEE
Copyright Date
2018
Language
en
File Format
application/pdf
Recommended Citation
Sharma, Shikha; Pushpak, Sai; Chinde, Venkatesh; and Dobson, Ian, "Sensitivity of Transient Stability Critical Clearing Time" (2018). Electrical and Computer Engineering Publications. 193.
https://lib.dr.iastate.edu/ece_pubs/193
Comments
This is a preprint of an article published as Sharma, Shikha, Sai Pushpak, Venkatesh Chinde, and Ian Dobson. "Sensitivity of Transient Stability Critical Clearing Time."