Power flow algorithm for radial distribution system with voltage sensitive loads

2012 ◽  
Author(s):  
T Murali Krishna ◽  
Bala Subrahamanyam ◽  
Deepak Reddy ◽  
N.V. Ramana ◽  
S. Kamakshaiah
Keyword(s):  
Radial Distribution ◽  
Distribution System ◽  
Power Flow ◽  
Radial Distribution System ◽  
Flow Algorithm

scholarly journals Optimal Placement of Reclosers in a Radial Distribution System for Reliability Improvement

Electronics ◽  
2021 ◽  
Vol 10 (24) ◽  
pp. 3182
Author(s):  
Afroz Alam ◽  
Mohd Tariq ◽  
Mohammad Zaid ◽  
Preeti Verma ◽  
Marwan Alsultan ◽  
...  
Keyword(s):  
Radial Distribution ◽  
Distribution System ◽  
Power Flow ◽  
Optimization Method ◽  
Test System ◽  
Optimal Placement ◽  
Radial Distribution System ◽  
Reliability Indices ◽  
Reliability Improvement ◽  
Bidirectional Power Flow

There is a need for the optimal positioning of protective devices to maximize customers satisfaction per their demands. Such arrangement advances the distribution system reliability to maximum achievable. Thus, radial distribution system (RDS) reliability can be improved by placing reclosers at suitable feeder sections. This article presents comprehensive details of an attempt to determine the reclosers’ optimal location in an RDS to maximize the utility profit by reliability improvement. Assessment of different reliability indices such as SAIDI, SAIFI, CAIFI, CAIDI, etc., with recloser placement, exhibits a considerable improvement in these indices in contrast with the absence of recloser. Consequently, a new bidirectional formulation has been proposed for the optimized arrangement of reclosers’. This formulation efficiently handles the bidirectional power flow, resulting from distributed generation (DG) unit (s) in the system. The proposed model has been solved for a test system by utilizing the Genetic algorithm (GA) optimization method. Later, test results conclude that reclosers’ optimal placement contributes significantly towards utility profit with minimum investment and outage costs.

scholarly journals Power-Flow Development Based on the Modified Backward-Forward for Voltage Profile Improvement of Distribution System

2016 ◽  
Vol 6 (5) ◽  
pp. 2005
Author(s):  
Suyanto Suyanto ◽  
Citra Rahmadhani ◽  
Ontoseno Penangsang ◽  
Adi Soeprijanto
Keyword(s):  
Distributed Generation ◽  
Radial Distribution ◽  
Distribution System ◽  
Power Flow ◽  
Distribution Network ◽  
Flow Simulation ◽  
Voltage Profile ◽  
Radial Distribution System ◽  
Flow Development ◽  
Three Phase

<p>Unbalanced three-phase radial distribution system has a complex problem in power system. It has many branches and it is sometimes voltage profile’s not stable at every end branches. For improvement of voltage profile, it can be performed by penetrating of a distributed generation models. Information of voltage profile can be gained by study of power flow.  The Modified Backward-Forward is one of the most widely used methods of development of power flow and has been extensively used for voltage profile analysis. In this paper, a study of power flow based on the Modified Backward-Forward method was used to capture the complexities of unbalanced three phase radial distribution system in the 20 kV distribution network in North Surabaya city, East Java, Indonesia within considering distributed generation models. In summary, for the informants in this study, the Modified Backward-Forward method has had quickly convergence and it’s just needed 3 to 5 iteration of power flow simulation which’s compared to other power flow development methods. Distributed Generation models in the modified the modified 34 BUS IEEE system and 20 kV distribution network has gained voltage profile value on limited range. One of the more significant findings to emerge from this development is that the Modified Backward-Forward method has average of error voltage about 0.0017 % to 0.1749%.</p>

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