Reactive Power Reserve Improvement Using Power Systems Inherent Structural Characteristics

Tajudeen H. Sikiru, Adisa A. Jimoh, Yskandar Hamam, John T. Agee, Roger Ceschi

Department of Electrical Engineering, Tshwane University of Technology, South Africa.
Department of Electrical Engineering, Tshwane University of Technology, South Africa and LISV of UVSQ, France.
ESIEE Paris, France and FSATI at Tshwane University of Technology, South Africa.
LISV of UVSQ and ESME Sudria, France.

DOI: 10.4236/epe.2013.54B189                

Abstract

This paper considers the use of the inherent structural characteristics of power system networks for improving the reactive power reserve margins for both topologically weak and strong networks. The inherent structural characteristics of the network are derived from the Schur complement of the partitioned Y-admittance matrix using circuit theory representations. Results show that topologically strong networks, operating close to the upper voltage limit could be made to increase their loadability margin by locating reactive power compensators close to generator sources, whereas topologically weak (ill conditioned) networks could be made to operate within the feasible operating limits by locating reactive power compensators on buses farther from generator sources.

Keywords

Power System Networks Inherent Characteristics; Reactive Power Reserve Margin; Loadability Margin; Schur Complement

Conflicts of Interest

The authors declare no conflicts of interest.

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