A Three Phase Power Flow Method for Unbalanced Radial Distribution systems with Inclusion of Voltage Regulator and Transformer Modeling

Ganesh Vulasala*
* Assistant Professor, Department of Electrical and Electronics Engineering, JNTU College of Engineering, Anantapur, Andhra Pradesh, India.
** Associate Professor, Department of Electrical and Electronics Engineering, JNTU College of Engineering, Kakinada.
Periodicity:October - December'2009
DOI : https://doi.org/10.26634/jee.3.2.1046

Abstract

This paper presents a simple method of three phase power flow algorithm for application to unbalanced radial distribution systems (URDS) with inclusion of voltage regulators and transformer modeling. Distribution systems are usually unbalanced due to unbalanced loading at the different phases. In this paper forward - backward propagation algorithm is used to calculate branch currents and node voltages at each node. The proposed method has been tested to analyze several distribution networks. The application of this method is also extended to find optimum location for reactive power compensation and network reconfiguration for planning and day-to-day operation of distribution networks. The proposed method exactly finds out the critical lines as that of the conventional method. The effectiveness of the proposed method was successfully applied to 19 bus  and 25 bus  unbalanced radial test systems.

Keywords

Distribution Systems, Unbalanced Three-Phase Load Flow, Distributed Load Models, Transformers, Voltage Regulator

How to Cite this Article?

Ganesh Vulasala and Sivanagaraju Sirigiri (2009). A Three Phase Power Flow Method for Unbalanced Radial Distribution Systems with inclusion of Voltage Regulator and Transformer Modeling. i-manager’s Journal on Electrical Engineering, 3(2), Oct-Dec 2009, Print ISSN 0973-8835, E-ISSN 2230-7176, pp. 26-39. https://doi.org/10.26634/jee.3.2.1046

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