A New Optimal Routing Algorithm for Loss Minimization and Voltage Stability Improvement in Radial Power Systems

Author

Shin, Joong-Rin ; Kim, Byung-Seop ; Park, Jong-Bae ; Lee, Kwang Y.

Author_Institution

Dept. of Electr. Eng., Konkuk Univ., Seoul

Volume

22

Issue

2

fYear

2007

fDate

5/1/2007 12:00:00 AM

Firstpage

648

Lastpage

657

Abstract

This paper presents an optimal routing algorithm (ORA) for minimizing power loss and at the same time maximizing the voltage stability in radial power systems. In the proposed ORA, a voltage stability index (VSI) for real-time assessment is introduced based on the conventional critical transmission path framework. In addition, the algorithm can automatically detect the critical transmission paths that will result in voltage collapse when additional real or reactive loads are added. To implement effective ORA, an improved branch exchange (IBE) method has been developed based on a loss calculation index and tie-branch power flows that is suited for real-time applications. The proposed algorithm has been tested in the IEEE 32- and 69-bus systems as well as in a large-scale Korea Electric Power Company 148-bus system to show its effectiveness and efficiency

Keywords

load flow; power system dynamic stability; power system interconnection; IEEE 32-69 bus systems; improved branch exchange methods; large scale Korea Electric Power Company; loss calculation index; loss minimization; optimal routing algorithm; radial power systems; reactive loads; real-time assessment; tie-branch power flow; transmission path framework; voltage collapse; voltage stability index; Circuit stability; Identity-based encryption; Minimization methods; Power system dynamics; Power system planning; Power system security; Power system stability; Routing; Switches; Voltage; Branch exchange; combinatorial optimization; loss minimization; optimal routing algorithm (ORA); radial power system; voltage stability index (VSI);

fLanguage

English

Journal_Title

Power Systems, IEEE Transactions on

Publisher

ieee

ISSN

0885-8950

Type

jour

DOI

10.1109/TPWRS.2006.889112

Filename

4162620