Document Type : Research Paper
Authors
Dept, of Electrical &Electronic Eng, University of Technology.
Abstract
Abstract The aim of this paper is to introduce a new technique to control the voltage and reactive power in power systems based on constrained optimization techniques introduced in MATLAB optimization toolbox . These optimization techniques include linear programming ( LP ) technique and sequential quadratic programming ( SQP ) included in the fmincon function . Generator voltages , reactive power sources and transformer taps are considered as control variables , and load bus voltages and generator reactive powers as state ( dependent ) variables . The relations are derived according to sensitivity relations based on Newton - Raphson load flow equations . The system losses are chosen as objective function so that the approach minimizes system real losses and enhances voltage profile . These techniques are tested by computer simulation on modified IEEE 30 - bus power system and satisfactory results are obtained .
Keywords
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