Reactive power impacts are considered in linear methods for computing Avail
able Transfer Capability (ATC). A new approach that first determines the re
active power flows using the exact circle equation for the transmission lin
e complex flow, and then determines ATC using active power distribution fac
tors is given. The ideas are demonstrated on 3-bus and 7-bus systems, and t
he results are discussed and compared with those obtained without reactive
power considerations, and full nonlinear solutions. The following text incl
udes the text and results from the conference paper: "Reactive Power Consid
erations in Linear ATC Computation", presented at the 1999 Hawaii Internati
onal Conference on System Sciences, Maul, Hawaii, January 5-8, 1999. (C) 20
01 Elsevier Science B.V. All rights reserved.