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A three-phase unbalanced power flow solution with three-phase distribution transformers
2011 4th International Conference on Electric Utility Deregulation and Restructuring and Power Technologies (DRPT), 2011A three-phase layered power flow solution has been here developed, which can handle distribution transformers with various common winding connections in unbalanced system of multi-voltage levels. In the proposed solution, a sensitivity constant incident matrix between node voltages and injection currents was derived based on path matrix, then a simple ...
Li Hong-wei +3 more
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Three-phase backward/forward power flow solution considering three-phase distribution transformers
2009 IEEE International Conference on Industrial Technology, 2009This paper proposes a three-phase backward/forward power flow solution which can handle distribution transformers of various common winding connections in unbalanced system of multi voltage levels. The proposed algorithm is based on the power summation method and takes the power losses into account considering the mutual coupling between three phases ...
Elahe Mashhour, S.M. Moghaddas-Tafreshi
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Distribution Grid Three-Phase Power Flow Algorithm Based On Flow Model
2020 IEEE 61th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON), 2020Distribution grid analysis is based on distribution grid power flow calculation. New power flow algorithm for distribution network is developed. Three-phase flow model is presented. The presented model is a development of single-line flow model. Three-phase flow model give the opportunity use advantages of flow model and take into account unbalanced ...
Pavel Bannykh, Andrey Pazderin
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Three-phase high power factor rectifier with unidirectional power flow
The Fifth International Conference on Power Electronics and Drive Systems, 2003. PEDS 2003., 2004This paper presents a three-phase multilevel rectifier with reduced power switches to achieve high power factor, low harmonics and high voltage capability. In the conventional three-phase neutral point clamped rectifiers, twelve power switches are used to draw the sinusoidal line currents with unity power factor.
null Bor-Ren Lin +2 more
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Three Phase Power Flow Incorporating Static Var Compensator
Applied Mechanics and Materials, 2014Application of Flexible AC Transmission Systems (FACTS) devices in a power system is a promising and more efficient way for the transfer and control of bulk amount of power. One of the problems encountered in power-systems operation is the generation of unbalanced voltages and currents in the presence of long transmission lines with few or no ...
B. Karthik +3 more
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Three-phase newton raphson power flow considering microgeneration
2013 IEEE PES Conference on Innovative Smart Grid Technologies (ISGT Latin America), 2013This paper presents results of investigations on issues related to inclusion of microgeneration and micro-grids in distribution systems and the difficulties imposed on load flow programs. Aspects of modeling using current injection in rectangular coordinates and solution by Newton-Raphson's method are presented.
V. Zimmer +3 more
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Multi-period three-phase unbalanced optimal power flow
IEEE PES Innovative Smart Grid Technologies, Europe, 2014Unbalanced three-phase distribution networks are undergoing significant changes with the advent of modern distributed energy resources (DER). These DER come in the form of both load and generation, such as electric vehicles, heat pumps, photovoltaics and micro wind turbines, and have the potential to drastically modify customers' behaviours and needs ...
Alison O'Connell, Andrew Keane
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Unified power flow controller models for three-phase power flow analysis
Electrical Engineering, 2005In this paper, three models of the unified power flow controller (UPFC) suitable for three-phase power flow analysis in polar coordinates are presented. The symmetrical components control model can be used to control the positive-sequence voltage of the shunt bus and the total three-phase active and reactive power flows of the transmission line while ...
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Three-phase converter models for unbalanced radial power-flow studies
IEEE Transactions on Power Systems, 2002This paper presents a power converter model intended for both balanced and unbalanced radial power flow studies. A three-phase steady state model of a power converter (ac/dc-dc/ac) composed of a diode rectifier, a loss-less dc link, and a pulse-width-modulated inverter is presented.
R. Stoicescu +4 more
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IEEE Transactions on Power Systems, 2005
In this paper, a continuation three-phase power flow (CTPFlow) approach in polar coordinates, which can be used to analyze voltage stability of unbalanced three-phase power systems, is proposed. Using CTPFlow, the PV curves of unbalanced three-phase power systems can be obtained.
X.-P. Zhang, P. Ju, E. Handschin
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In this paper, a continuation three-phase power flow (CTPFlow) approach in polar coordinates, which can be used to analyze voltage stability of unbalanced three-phase power systems, is proposed. Using CTPFlow, the PV curves of unbalanced three-phase power systems can be obtained.
X.-P. Zhang, P. Ju, E. Handschin
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