A prescriptive model to assess the socio-demographics impacts of resilience improvements on power networks

2020 ◽  
Vol 51 ◽  
pp. 101777
Author(s):  
Mehmet Baran Ulak ◽  
Anil Yazici ◽  
Eren Erman Ozguven
Author(s):  
Luc Bourgeois

The study of places of power in the Merovingian realm has long been focused on cities, monasteries, and royal palaces. Recent archaeological research has led to the emergence of other categories. Four of them are addressed in this chapter. These include the capitals of fallen cities, which continue to mark the landscape in one way or another. Similarly, the fate of small Roman towns during the early Middle Ages shows that most of them continued to host a variety of secular and ecclesiastical powers. In addition, from the fourth century onward, large hilltop fortified settlements multiplied anew. They complemented earlier networks of authority, whether elite residences, artisan communities, or real towns. Finally, from the seventh century onward, the great aristocratic villas of late antiquity were transformed into settlements organized around one or more courtyards and supplemented by funerary and religious structures. The evolution of political spaces and lifestyles explains both the ruptures in power networks that occurred during the Merovingian epoch and the many continuities that can be seen in the four kinds of places studied in this chapter that were marked by these developments.


2013 ◽  
Vol 45 (1) ◽  
pp. 501-508 ◽  
Author(s):  
P.A. Trodden ◽  
W.A. Bukhsh ◽  
A. Grothey ◽  
K.I.M. McKinnon

Author(s):  
F. Provoost ◽  
A. Ishchenko ◽  
A. Jokic ◽  
J.M.A. Myrzik ◽  
W.L. Kling
Keyword(s):  

2020 ◽  
pp. 1-1
Author(s):  
Moussa Kafal ◽  
Nicolas Gregis ◽  
Jaume Benoit ◽  
Nicolas Ravot ◽  
Clara Lagomarsini ◽  
...  

Electronics ◽  
2021 ◽  
Vol 10 (14) ◽  
pp. 1620
Author(s):  
Agata Szultka ◽  
Seweryn Szultka ◽  
Stanislaw Czapp ◽  
Ryszard Zajczyk

Renewable sources of energy (RES), especially photovoltaic (PV) micro-sources, are very popular in many countries. This way of clean power production is applied on a wide scale in Poland as well. The Polish legal regulations and tariffs specify that every prosumer in a low-voltage network may feed this network with a power not higher than the maximum declared consumed power. In power networks with RES, the voltage level changes significantly along the power line and depends on the actually generated as well as consumed power by particular prosumers. There are cases that prosumers connected to this line cannot produce and inject the full permissible power from PV sources due to the level of a voltage higher than the technically acceptable value. In consequence, it leads to the lack of profitability of investments in installations with PV sources. In this paper, voltage variations in a real rural low-voltage network with PV micro-sources are described. The possible two general solutions of voltage levels improvement are discussed—increase in the cross-sectional area of the bare conductors in the existing overhead line as well as the replacement of the overhead line with a cable line. The recommended solution for the analyzed network, giving the best reduction of voltage variations and acceptable cost, is underlined. Such a recommendation can also be utilized in other rural networks.


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