TITLE:
Reactive Power Reserve Improvement Using Power Systems Inherent Structural Characteristics
AUTHORS:
Tajudeen H. Sikiru, Adisa A. Jimoh, Yskandar Hamam, John T. Agee, Roger Ceschi
KEYWORDS:
Power System Networks Inherent Characteristics; Reactive Power Reserve Margin; Loadability Margin; Schur Complement
JOURNAL NAME:
Energy and Power Engineering,
Vol.5 No.4B,
November
12,
2013
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.