DocumentCode :
2596049
Title :
Sensitivity analysis and its applications in power system improvements
Author :
Chureemart, J. ; Churueang, P.
Author_Institution :
Dept. of Phys., Mahasarakham Univ., Maha Sarakham
Volume :
2
fYear :
2008
fDate :
14-17 May 2008
Firstpage :
945
Lastpage :
948
Abstract :
The propose of this paper is to study the application of optimal power flow sensitivity for power system improvements. The optimal capacitor placement for injecting reactive power into a power system yields the highest system power factor, decrease in total generation cost and total system losses. The optimal power flow is used to compute the optimal system operating point at the lowest total generation cost under the normal steady state condition. After that, the sensitivity analysis is applied to evaluate the change of total generation cost with respect to the change of reactive power at any bus to determine the optimal location of the capacitor banks. The method of optimal power flow sensitivity is simple but powerful. This method greatly reduces the computational work of computing optimal power flow for several different systems in which capacitors are to be installed. The sensitivity technique is applied to 5-bus and 9-bus test systems. The results show that the technique gives the same answers as the simple technique in which more calculations are needed.
Keywords :
load flow; power capacitors; power factor; reactive power; sensitivity analysis; static VAr compensators; Var compensation; normal steady state condition; optimal power capacitor; optimal power flow sensitivity; power factor; power system; reactive power; sensitivity analysis; Capacitors; Cost function; Industrial power systems; Lagrangian functions; Load flow; Power generation; Power system analysis computing; Reactive power; Sensitivity analysis; System testing; Optimal power flow; Power system improvement; Sensitivity analysis; VAR compensation;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology, 2008. ECTI-CON 2008. 5th International Conference on
Conference_Location :
Krabi
Print_ISBN :
978-1-4244-2101-5
Electronic_ISBN :
978-1-4244-2102-2
Type :
conf
DOI :
10.1109/ECTICON.2008.4600587
Filename :
4600587
Link To Document :
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