Study on the fuzzy ac power flow model

2004 ◽  
Author(s):  
Jin Hao ◽  
Libao Shi ◽  
Guoyu Xu ◽  
Yongsheng Xie
Keyword(s):  
Power Flow ◽  
Flow Model ◽  
Ac Power

scholarly journals Fast Heuristic AC Power Flow Analysis with Data-Driven Enhanced Linearized Model

Energies ◽  
2020 ◽  
Vol 13 (13) ◽  
pp. 3308
Author(s):  
Xingpeng Li
Keyword(s):  
Power Systems ◽  
Power System ◽  
Power Flow ◽  
Flow Model ◽  
Reactive Power ◽  
Unit Commitment ◽  
Flow Analysis ◽  
Data Driven ◽  
Dc Power ◽  
Ac Power

Though the full AC power flow model can accurately represent the physical power system, the use of this model is limited in practice due to the computational complexity associated with its non-linear and non-convexity characteristics. For instance, the AC power flow model is not incorporated in the unit commitment model for practical power systems. Instead, an alternative linearized DC power flow model is widely used in today’s power system operational and planning tools. However, DC power flow model will be useless when reactive power and voltage magnitude are of concern. Therefore, a linearized AC (LAC) power flow model is needed to address this issue. This paper first introduces a traditional LAC model and then proposes an enhanced data-driven linearized AC (DLAC) model using the regression analysis technique. Numerical simulations conducted on the Tennessee Valley Authority (TVA) system demonstrate the performance and effectiveness of the proposed DLAC model.

Study on Blackout Model for Power Grid Growth Process

2014 ◽  
Vol 1070-1072 ◽  
pp. 902-908
Author(s):  
Qun Yu ◽  
Yi Ma ◽  
Min Zhang ◽  
Liang Shi
Keyword(s):  
Critical State ◽  
Power Flow ◽  
Flow Model ◽  
Power Grid ◽  
Probability Of Failure ◽  
Self Organized ◽  
Load Growth ◽  
Model And Simulation ◽  
Ac Power ◽  
Planning And Construction

In this paper a blackout AC power flow model considering the probability of line stoppage in the process of power grid growth is given,and the self-organized critical state in the process of power grid growth is studied with the power grid upgrade rate is equal、greater or less than the load growth rate.Simulation results show that power grid upgrading rate must meet the system's load growth, or the probability of failure will be greatly increased with the grid exceed the critical state while the load growth faster than the grid upgrading in the long process of building the power grid. The model and simulation results presented in this paper provide a theoretical basis for the planning and construction of the power grid.

Modeling of AC Power Network Consisting of Bidirectional AC-DC Converter Modules for Power Flow Design

2014 ◽  
Vol 2 ◽  
pp. 65-68
Author(s):  
Takashi Hisakado ◽  
Ryoya Kazaoka ◽  
Kazushi Fukae ◽  
Osami Wada
Keyword(s):  
Power Flow ◽  
Power Network ◽  
Ac Power

Absorption of oxygen into Ellis liquid

1987 ◽  
Vol 52 (12) ◽  
pp. 2859-2864
Author(s):  
František Potůček ◽  
Jiří Stejskal
Keyword(s):  
Aqueous Solutions ◽  
Power Flow ◽  
Flow Model ◽  
Poly Acrylamide

The authors studied absorption of oxygen by aqueous solutions of poly(acrylamide) which showed a pseudoplastic behaviour. The results were described by equations involving dimensionless criteria modified for the Ellis flow model. The equations were compared with those published for the power flow model.

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