In this paper, the Voltage Magnitude Constrained OPF (VMC-OPF) algorithm to determine the reactive power injection from compensating equipment to load bus is developed. By introducing the proposed VMC-OPF to the real power related Unit Commitment (UC) [1], a novel daily UC method taking into account the reactive power to secure bus voltage magnitude is presented. The Transmission Access Charge (TAC) and Ancillary Services Charge (ASC) are included in the objective function for considering costs of using transmission network and supplying reactive power to maintain the voltage. Using the proposed UC, the difference between two schedules based on benefit maximization and cost minimization is also discussed. To ascertain the effectiveness of the proposed UC method, we demonstrate various simulation results for a model power system of IEEE-118 bus system. © 2007 Wiley Periodicals, Inc. Electr Eng Jpn, 162(3): 17–26, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/eej.20590
[1]
H. H. Happ,et al.
Multi-Level Tearing and Applications
,
1973
.
[2]
S. Hunt,et al.
Competition and Choice in Electricity
,
1996
.
[3]
S. M. Shahidehpour,et al.
Unit commitment with transmission security and voltage constraints
,
1999
.
[4]
M. Caramanis,et al.
Optimal Spot Pricing: Practice and Theory
,
1982,
IEEE Power Engineering Review.
[5]
Hugh Rudnick,et al.
Pioneering electricity reform in South America
,
1996
.
[6]
Daisuke Murata,et al.
Unit Commitment Scheduling by Lagrange Relaxation Method Taking into Account Transmission Losses
,
2004
.
[7]
G. Sheblé,et al.
Power generation operation and control — 2nd edition
,
1996
.