Title :
Increasing the loadability of power systems through optimal-local-control actions
Author :
De Souza, Antônio C Zambroni ; Honório, Leonardo M. ; Torres, Geraldo L. ; Lambert-Torres, Germano
Author_Institution :
Escola Fed. de Engenharia de Itajuba, Brazil
Abstract :
This paper deals with the problem of increasing the loadability of power systems which, in turn, can be linked to voltage collapse occurrences. As voltage collapses may be caused by insufficiency of reactive power support, and considering that reactive power can be locally supplied, for instance, by shunt capacitors, this paper addresses the impacts of local control actions on the system loadability. The study is carried out in two steps. First, by using the tangent vector technique, two important areas of the power system are identified: the critical area under the point of view of voltage collapse, and the area most sensitive to active power losses reduction. Second, once these two areas are identified, an optimization technique takes place to optimize the amount of shunt reactive power compensation that should be available in each bus. Numerical results are obtained using the IEEE 14- and 118-bus systems.
Keywords :
compensation; load flow control; optimal control; optimisation; power system control; power system stability; reactive power control; vectors; IEEE 118 bus systems; IEEE 14 bus systems; active power loss reduction; optimal local control actions; optimization technique; power systems loadability; reactive power; shunt reactive power compensation; tangent vector technique; voltage collapse; Control systems; Power system analysis computing; Power system control; Power system modeling; Power system reliability; Power system stability; Power systems; Reactive power; Reactive power control; Voltage control;
Journal_Title :
Power Systems, IEEE Transactions on
DOI :
10.1109/TPWRS.2003.818602