Backward-Forward Sweep Based Power Flow Algorithm in Distribution Systems

2020 ◽  
pp. 365-382
Author(s):  
Farkhondeh Jabari ◽  
Farnaz Sohrabi ◽  
Pouya Pourghasem ◽  
Behnam Mohammadi-Ivatloo
Keyword(s):  
Power Flow ◽  
Distribution Systems ◽  
Flow Algorithm

scholarly journals A Sensitivity-Based Three-Phase Weather-Dependent Power Flow Algorithm for Networks with Local Controllers—Supplementary

2020 ◽  
Author(s):  
Evangelos Pompodakis ◽  
Arif Ahmed ◽  
Minas Alexiadis
Keyword(s):  
Reaction Time ◽  
Time Delays ◽  
Power Flow ◽  
Distribution Systems ◽  
Distribution Networks ◽  
Switching Sequence ◽  
Three Phase ◽  
Supplementary Document ◽  
Flow Algorithm ◽  
Weather Variations

This supplementary document is part of the original 2-Part manuscript titled “A SensitivityBased Three-Phase Weather-Dependent Power Flow Algorithm for Networks with Local Controllers.” This research focuses on proposing a novel sensitivity-based three-phase weather-dependent power flow algorithm for distribution networks with local voltage controllers (LVCs). The proposed algorithm has four distinct characteristics: a) it considers the three-phase unbalanced nature of distribution systems, b) the operating state of LVCs is calculated using sensitivity parameters, which accelerates the convergence speed of the algorithm, c) it considers the precise switching sequence of LVCs based on their reaction time delays, and d) the nonlinear influence of weather variations in the power flow is also taken into consideration. In this supplementary document, the relevant derivations of the sensitivity parameters are presented to complement the original 2-Part manuscript.

scholarly journals A Sensitivity-Based Three-Phase Weather-Dependent Power Flow Algorithm for Networks with Local Controllers—Part I: Algorithm Development

2021 ◽  
Author(s):  
Evangelos Pompodakis ◽  
Arif Ahmed ◽  
Minas Alexiadis
Keyword(s):  
Distribution System ◽  
Power Flow ◽  
Distribution Systems ◽  
System Analysis ◽  
Distribution Networks ◽  
Theoretical Development ◽  
Modern Distribution ◽  
Three Phase ◽  
Flow Algorithm ◽  
Weather Variations

<b>Local voltage controllers (LVCs) are important components of a modern distribution system for regulating the voltage within permissible limits. This manuscript presents a sensitivity-based three-phase weather-dependent power flow algorithm for distribution networks with LVCs. This Part I presents the theoretical development of the proposed algorithm, which has four distinct characteristics: a) it considers the three-phase unbalanced nature of distribution systems, b) the operating state of LVCs is calculated using sensitivity parameters, which accelerates the convergence speed of the algorithm, c) it considers the precise switching sequence of LVCs based on their reaction time delays, and d) the nonlinear influence of weather variations in the power flow is also taken into consideration. Simulations and validation results presented in Part II indicate that the proposed approach outperforms other existing algorithms with respect to the accuracy and speed of convergence, thus making it a promising power flow tool for accurate distribution system analysis. </b><div><b><br></b></div>

scholarly journals A Sensitivity-Based Three-Phase Weather-Dependent Power Flow Algorithm for Networks with Local Controllers—Part I: Algorithm Development

2021 ◽  
Author(s):  
Evangelos Pompodakis ◽  
Arif Ahmed ◽  
Minas Alexiadis
Keyword(s):  
Distribution System ◽  
Power Flow ◽  
Distribution Systems ◽  
System Analysis ◽  
Distribution Networks ◽  
Theoretical Development ◽  
Modern Distribution ◽  
Three Phase ◽  
Flow Algorithm ◽  
Weather Variations

<b>Local voltage controllers (LVCs) are important components of a modern distribution system for regulating the voltage within permissible limits. This manuscript presents a sensitivity-based three-phase weather-dependent power flow algorithm for distribution networks with LVCs. This Part I presents the theoretical development of the proposed algorithm, which has four distinct characteristics: a) it considers the three-phase unbalanced nature of distribution systems, b) the operating state of LVCs is calculated using sensitivity parameters, which accelerates the convergence speed of the algorithm, c) it considers the precise switching sequence of LVCs based on their reaction time delays, and d) the nonlinear influence of weather variations in the power flow is also taken into consideration. Simulations and validation results presented in Part II indicate that the proposed approach outperforms other existing algorithms with respect to the accuracy and speed of convergence, thus making it a promising power flow tool for accurate distribution system analysis. </b><div><b><br></b></div>

Power Flow Method for Distribution Systems Based on the Current Network Equation

2014 ◽  
Vol 1070-1072 ◽  
pp. 839-842
Author(s):  
Xiao Xiao Ye ◽  
Xiong Xie ◽  
Fang Zong Wang
Keyword(s):  
Newton Method ◽  
Radial Distribution ◽  
Constant Coefficient ◽  
Power Flow ◽  
Distribution Systems ◽  
Jacobian Matrix ◽  
Coefficient Matrix ◽  
General Distribution ◽  
Flow Equations ◽  
Flow Algorithm

Proposed general distribution power flow algorithm based on the current network equation. The power flow equations of the algorithm based on the node current balance, and the Jacobian matrix is a constant coefficient matrix compared to the conventional Newton method. It has the characteristics of easy programming, and the method has universality at the same time. It can be used for radial distribution network and systems with loops. The example shows that the method is superior to conventional Newton method on speed and convergence.

An Efficient Power Flow Algorithm for Distribution Systems with Polynomial Load

2002 ◽  
Vol 39 (4) ◽  
pp. 371-386 ◽  
Author(s):  
Jianwei Liu ◽  
M. M. A. Salama ◽  
R. R. Mansour
Keyword(s):  
Power Flow ◽  
Distribution Systems ◽  
Test Results ◽  
Load Model ◽  
Voltage Ratio ◽  
Flow Algorithm ◽  
Convergence Control ◽  
Newton Raphson ◽  
Efficient Power ◽  
Raphson Method

A new, efficient power flow algorithm for complex distribution systems is presented. Voltage ratio is used for convergence control. This method has fast convergence ability for the polynomial load model for which the traditional Newton-Raphson method is usually not adaptable. Test results show the robustness of the proposed method.

A robust three phase power flow algorithm for radial distribution systems

1999 ◽  
Vol 50 (3) ◽  
pp. 227-236 ◽  
Author(s):  
D. Thukaram ◽  
H.M. Wijekoon Banda ◽  
Jovitha Jerome
Keyword(s):  
Radial Distribution ◽  
Power Flow ◽  
Distribution Systems ◽  
Three Phase ◽  
Flow Algorithm
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