scholarly journals Developing the future electricity grid

2021 ◽  
Vol 52 (5) ◽  
pp. 32-35
Author(s):  
Miro Zeman

We are used to the continuous supply of electricity from a socket. Behind the socket lies a complex system of large power stations, high-voltage cables, transformers and a distribution network. Little has changed in the system over the last fifty years. The ambition to generate sustainable electricity from variable solar and wind energy has an immense impact on the electricity sector and requires major changes in our electricity grid and its operation.

2013 ◽  
Vol 2013 ◽  
pp. 1-21 ◽  
Author(s):  
G. M. Shafiullah ◽  
Amanullah M. T. Oo ◽  
A. B. M. Shawkat Ali ◽  
Alex Stojcevski

Wind energy is one of the most promising renewable energy sources due to its availability and climate-friendly attributes. Large-scale integration of wind energy sources creates potential technical challenges due to the intermittent nature that needs to be investigated and mitigated as part of developing a sustainable power system for the future. Therefore, this study developed simulation models to investigate the potential challenges, in particular voltage fluctuations, zone substation, and distribution transformer loading, power flow characteristics, and harmonic emissions with the integration of wind energy into both the high voltage (HV) and low voltage (LV) distribution network (DN). From model analysis, it has been clearly indicated that influences of these problems increase with the increased integration of wind energy into both the high voltage and low voltage distribution network; however, the level of adverse impacts is higher in the LV DN compared to the HV DN.


Author(s):  
Michael S Okundamiya

The rising demands for a sustainable energy system have stimulated global interests in renewable energy sources. Wind is the fastest growing and promising source of renewable power generation globally. The inclusion of wind power into the electric grid can severely impact the monetary cost, stability and quality of the grid network due to the erratic nature of wind. Power electronics technology can enable optimum performance of the wind power generation system, transferring suitable and applicable energy to the electricity grid. Power electronics can be used for smooth transfer of wind energy to electricity grid but the technology for wind turbines is influenced by the type of generator employed, the energy demand and the grid requirements. This paper investigates the constraints and standards of wind energy conversion technology and the enabling power electronic technology for integration to electricity grid.


Author(s):  
X. Costoya ◽  
M. deCastro ◽  
D. Carvalho ◽  
Z. Feng ◽  
M. Gómez-Gesteira

2012 ◽  
Vol 516-517 ◽  
pp. 1503-1507
Author(s):  
Gui Hua Yuan ◽  
Lin Li ◽  
Jun Li ◽  
Zhi Jian Hu ◽  
Xiao Bo Li ◽  
...  

High voltage distribution network is an important link between transmission and middle voltage distribution network. If a high voltage distribution network fault occurs, the economy and reliability of the whole city distribution system will be seriously affected. To solve this problem, a traditional reconstruction optimization model is improved and a 2-staged reconstruction optimization model is proposed based on an improved particle swarm optimization (PSO) algorithm. The first stage reconstruction only considers the economic goal and the second stage reconstruction needs consider the boundary constrains. The 2-staged method considers the economic benefit and the voltage quality simultaneously. It can achieve the multi goals: meeting actual boundary operation conditions, optimizing the combination of network losses and the number of operation switching. The fault isolation and reconfiguration of an actual distribution network system in Dezhou power grid were simulated. Simulation results validate the rationality and feasibility of the proposed method


1914 ◽  
Vol XXXIII (1) ◽  
pp. 23-55 ◽  
Author(s):  
James Lyman ◽  
Allen M. Rossman ◽  
Leslie L. Perry
Keyword(s):  

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