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《Journal of Electric Power Science and Technology》 2009-04
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Voltage stability margin indexes based reactive power compensation node selection for power system

LIN Qiao-yu,CAI Jin-ding(College of Electrical Engineering and Automation,Fuzhou University,Fuzhou 350002,China)  
Based on the conditions of simple alternating current circuit steady operation,three states of critical voltage collapse are discussed and the voltage stability region is shown with figures in this paper.By calculating the voltage stability margin indexes of each branch of power systems,the branches facing critical voltage collapse can be found.When SVC are installed at the end of these branches,the voltage and voltage stability margin indexes are all improved.Simulation results for the IEEE power system case with 5 nodes shows that,after VAR compensation to these weak voltage nodes,the reactive power can be balanced,the voltage quality and the stability of system can be improved.
【Fund】: 福建省自然科学基金(A0710003);; 福建省教育厅科学基金(JB06045)
【CateGory Index】: TM712
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