A novel optimization formulation for the direct computation of the voltage collapse point

The knowledge of the critical loading point of a power system is essential to assess its voltage stability condition. This point is traditionally obtained through continuation power flows which are relatively accurate but requires a considerable amount of processing time. In this work, the search for the critical loading point of a certain power system is formulated as a constrained optimization problem which is solved using a robust scheme known as the Dog-leg Trust Region. This technique is mainly characterized by its reliability and fast convergence as it makes advantage of the merits of classical optimization techniques and gets rid of their limitations. The proposed method was examined on several test systems namely the IEEE14, IEEE39, IEEE57, and IEEE118-bus systems. Besides successfully identifying the maximum loading point of these systems the algorithm achieved a considerable saving in processing time when compared to the continuation power flow analysis of PSAT.

Grantor dc:publisher

University of Tennessee at Chattanooga

Year dc:date.available

2018

Author dc:creator

• Elballa, Wafa E.

Contributors dc:contributor

• Eltom, Ahmed H.
• Karrar, Abdelrahman A.; Kobet, Gary L.
• College of Engineering and Computer Science

• Electric power distribution

Licence

• https://rightsstatements.org/page/InC/1.0/?language=en

Language dc:language

English, eng

Repository record dc:identifier

https://scholar.utc.edu/theses/518

OAI identifier oai:identifier

oai:scholar.utc.edu:theses-1670