Abstract
Investigating and Simulating DGs to Improve Voltage Profile and Reducing Power Loss in Unbalanced Distribution Networks
Highlights
Increasing in energy consumption and expansion of nonlinear and sensitive loads, continuous variation in network power consumption and unpredicted change in load lead to unbalance in power systems
To show Distributed generations (DGs) effects in power systems, it is necessary to update most of analyzing tools that used by power system engineers
As the goal of this paper is the study of DG’s impact on voltage profile and power system losses in an unbalanced condition, so despite the DG’s type all of DGs’ are modeled as PV or PQ and their location is selected randomly based on trial and error method
Summary
Increasing in energy consumption and expansion of nonlinear and sensitive loads (like drive systems, heavy single phase loads), continuous variation in network power consumption and unpredicted change in load lead to unbalance in power systems. Nowadays using distributed generation due to its many advantages like balancing power flow, balancing steady state condition, backup P and Q, reduction of investing in the transmission system, easy installation and startup, from consumers and power companies’ point of view is unavoidable. Development of Distributed generations (DGs) has changed the nature of power networks from an active to a reactive one. In [3], [4], [5], [6], [7], [8], [9], models of generators, transformers, lines and capacitors are presented to study three-phase power flow. Probabilistic computer calculations and usual power flow solution to analyze steady state of the network are commonly used. Too many calculating methods have been suggested for this subject, from which the NewtonRaphson method with its converging specification is known as the best method It is a popular method in the industry [19]. In [20], [21], [22], about operation management of DGs power sources connected to distribution networks worked
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