A Power Flow Method for Power Distribution Systems Based on a Sinusoidal Transformation to a Convex Quadratic Form

2021 ◽  
Author(s):  
Jaber Valinejad ◽  
Lamine Mili ◽  
Yijun Xu
Keyword(s):  
Quadratic Form ◽  
Power Distribution ◽  
Power Flow ◽  
Distribution Systems ◽  
Power Distribution Systems ◽  
Flow Method ◽  
Power Flow Method

scholarly journals A Graph-Based Power Flow Method for Balanced Distribution Systems

Energies ◽  
2018 ◽  
Vol 11 (3) ◽  
pp. 511 ◽  
Author(s):  
Tao Shen ◽  
Yanjun Li ◽  
Ji Xiang
Keyword(s):  
Power Flow ◽  
Distribution Systems ◽  
Flow Method ◽  
Balanced Distribution ◽  
Power Flow Method

scholarly journals Power Flow Analysis of Weakly Meshed Distribution Network Including DG

2018 ◽  
Vol 8 (5) ◽  
pp. 3398-3404 ◽  
Author(s):  
A. Al-Sakkaf ◽  
M. AlMuhaini
Keyword(s):  
Power Distribution ◽  
Distribution System ◽  
Power Flow ◽  
Distribution Systems ◽  
Flow Analysis ◽  
Load Flow ◽  
Power Distribution Systems ◽  
Power Flow Analysis ◽  
Bus Voltage ◽  
Flow Study

Power flow is one of the essential studies in power system operation and planning. All steady-state parameters for power distribution systems, such as bus voltage magnitudes, angles, power flows, and power losses, can be calculated by conducting power flow analysis. Distribution system features differ from those of transmission system, rendering conventional load flow algorithms inapplicable. In this paper, three distribution power flow techniques are presented and tested to evaluate their performance when applied to a networked distribution system including distributed generation (DG). These are the distribution load flow (DLF) matrix, the enhanced Newton Raphson (ENR), and the robust decoupled (RD) method. IEEE 33-bus system is adopted for implementing the above methods. Radial and weakly meshed configurations are applied to the tested system with DG inclusion to investigate their influence on the power flow study findings.

scholarly journals Coordinated Voltage Regulation by On-Load Tap Changer Operation and Demand Response Based on Voltage Ranking Search Algorithm

Energies ◽  
2019 ◽  
Vol 12 (10) ◽  
pp. 1902 ◽  
Author(s):  
Qiangqiang Xie ◽  
Xiangrong Shentu ◽  
Xusheng Wu ◽  
Yi Ding ◽  
Yongzhu Hua ◽  
...  
Keyword(s):  
Demand Response ◽  
Power Distribution ◽  
Power Flow ◽  
Distribution Systems ◽  
Search Algorithm ◽  
Voltage Regulation ◽  
Voltage Sensitivity ◽  
Power Distribution Systems ◽  
Pv Systems ◽  
Flexible Resources

The growing penetration of photovoltaic (PV) systems may cause an over-voltage problem in power distribution systems. Meanwhile, charging of massive electric vehicles may cause an under-voltage problem. The over- and under-voltage problems make the voltage regulation become more challenging in future power distribution systems. Due to the development of smart grid and demand response, flexible resources such as PV inverters and controllable loads can be utilized for voltage regulation in distribution systems. However, the voltage regulation needs to calculate the nonlinear power flow; as a result, utilizing flexible resources for voltage regulation is a nonlinear scheduling problem requiring heavy computational resources. This study proposes an intelligent search algorithm called voltage ranking search algorithm (VRSA) to solve the optimization of flexible resource scheduling for voltage regulation. The VRSA is built based on the features of radial power distribution systems. A numerical simulation test is carried out on typical power distribution systems. The VRSA is compared with the genetic algorithm and voltage sensitivity method. The results show that the VRSA has the best optimization effect among the three algorithms. By utilizing flexible resources through demand response, the tap operation times of on-load tap changers can be reduced.

Fast-decoupled power flow method for integrated analysis of transmission and distribution systems

2021 ◽  
Vol 196 ◽  
pp. 107215
Author(s):  
Renan K. Portelinha ◽  
Carolina C. Durce ◽  
Odilon L. Tortelli ◽  
Elizete M. Lourenço
Keyword(s):  
Power Flow ◽  
Distribution Systems ◽  
Integrated Analysis ◽  
Flow Method ◽  
Transmission And Distribution ◽  
Power Flow Method
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