Voltage Stability Enhancement by Optimal Placement of UPFC

Title & Authors
Voltage Stability Enhancement by Optimal Placement of UPFC
Kowsalya, M.; Ray, K.K.; Shipurkar, Udai; Saranathan;

Abstract
This paper presents the improvement of the voltage profiles of power system networks by the inclusion of Unified Power Flow Controller (UPFC). The mathematical model of the UPFC is incorporated in the load flow algorithm and the L-index is calculated for the different values of the control parameter r $\small{and{\gamma}}$. The positioning of the UPFC device is changed to minimize the sum of the squares of the L-indices at all load buses. The test cases considered for the improvement of voltage profile with the WSCC 9-bus and IEEE 30 bus system. With the best position of UPFC along with the control parameters the improvement in voltage profile of the power system networks are obtained. The results obtained are quite encouraging compared with other techniques used to identify the best location of UPFC.
Keywords
Control parameters;FACTS;L-index;UPFC;Voltage stability;
Language
English
Cited by
1.
New Stability Criteria for Linear Systems with Interval Time-varying State Delays,;;

Journal of Electrical Engineering and Technology, 2011. vol.6. 5, pp.713-722
1.
New Stability Criteria for Linear Systems with Interval Time-varying State Delays, Journal of Electrical Engineering and Technology, 2011, 6, 5, 713
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