Modeling and elimination of load buses in power flow solutions

Author

Talaq, Jawad

Author_Institution

Dept. of Electr. Eng., Bahrain Univ., Bahrain

Volume

10

Issue

3

fYear

1995

fDate

8/1/1995 12:00:00 AM

Firstpage

1154

Lastpage

1158

Abstract

This paper presents a method to solve the power flow problem after eliminating load buses from the system. Loads are first modeled and reflected in the admittance matrix and then their respective buses are eliminated. The obtained model is a reduced model of the original system. The admittance matrix is of the same order as the number of voltage-controlled buses in the system. The variables of the reduced model are the voltage-controlled buses voltage angles only. The Newton Raphson method is used to calculate the voltage angles of the reduced model and then the voltage and angles of the original system are calculated by a direct method. The simulation is carried out on two systems, the IEEE 118 bus test system and a 131 bus actual system. It is shown that solution time is significantly reduced when compared to the conventional Newton Raphson method using the original system

Keywords

Newton-Raphson method; electric admittance; load flow; matrix algebra; power systems; 131 bus system; IEEE 118 bus test system; Newton Raphson method; admittance matrix; load buses elimination; load buses modeling; power flow solutions; reduced model; voltage-controlled buses; Admittance; Load flow; Load modeling; Power engineering and energy; Power system modeling; Reactive power; Samarium; System testing; Systems engineering and theory; Voltage;

fLanguage

English

Journal_Title

Power Systems, IEEE Transactions on

Publisher

ieee

ISSN

0885-8950

Type

jour

DOI

10.1109/59.466542

Filename

466542