Modeling and elimination of load buses in power flow solutions

Journal Article · Tue Aug 01 04:00:00 EDT 1995 · IEEE Transactions on Power Systems

DOI:https://doi.org/10.1109/59.466542· OSTI ID:163004

Talaq, J ^[1]

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1. Univ. of Bahrain (Bahrain). Dept. of Electrical Engineering

This paper presents a method to solve the power flow problem after eliminating load buses form 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. 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, 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.

• OSTI ID: 163004
• Report Number(s): CONF-940702--
• Journal Information: IEEE Transactions on Power Systems, Journal Name: IEEE Transactions on Power Systems Journal Issue: 3 Vol. 10; ISSN ITPSEG; ISSN 0885-8950
• Country of Publication: United States
• Language: English

Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION
COMPUTER CALCULATIONS
COMPUTERIZED SIMULATION
MATHEMATICAL MODELS
POWER SYSTEMS
POWER TRANSMISSION