Integrated evaluation of urban energy supply security: A network perspective

2019 ◽  
Vol 209 ◽  
pp. 461-471 ◽  
Author(s):  
Meirong Su ◽  
Wencong Yue ◽  
Yufei Liu ◽  
Yongzhen Tan ◽  
Yongming Shen
Energies ◽  
2020 ◽  
Vol 14 (1) ◽  
pp. 17
Author(s):  
José Antonio Peña-Ramos ◽  
Philipp Bagus ◽  
Dmitri Amirov-Belova

The “European Green Deal” has ambitious aims, such as net-zero greenhouse gas emissions by 2050. While the European Union aims to make its energies greener, Russia pursues power-goals based on its status as a geo-energy superpower. A successful “European Green Deal” would have the up-to-now underestimated geopolitical advantage of making the European Union less dependent on Russian hydrocarbons. In this article, we illustrate Russian power-politics and its geopolitical implications by analyzing the illustrative case of the North Caucasus, which has been traditionally a strategic region for Russia. The present article describes and analyses the impact of Russian intervention in the North Caucasian secessionist conflict since 1991 and its importance in terms of natural resources, especially hydrocarbons. The geopolitical power secured by Russia in the North Caucasian conflict has important implications for European Union’s energy supply security and could be regarded as a strong argument in favor of the “European Green Deal”.


2005 ◽  
Vol 40 (2) ◽  
pp. 256-277 ◽  
Author(s):  
Debra Johnson

AbstractThis article explores issues of energy supply security from the perspective of the EU–Russian energy relationship and of competing foreign energy policy paradigms. Using approaches developed by Peter Rutland within the context of Russia's energy policy towards the CIS and the three pillars of EU energy policy as a starting point, the article concludes that the overall EU–Russian energy relationship can be best explained through a framework of mutual interest and dependency: that is, the EU is becoming increasingly, but not totally, dependent on Russian energy, particularly gas; and Russia is becoming increasingly, but not totally, dependent on European markets. Nevertheless, other paradigms continue to yield useful insights in relation to individual components of the EU–Russian energy relationship.


Author(s):  
Talip Arsu

Electricity generation, one of the renewable energy sources (RES), delivers a solution for various problems such as energy efficiency, energy supply security, reducing foreign dependency, and especially, environmental concerns. However, the solutions provided for these problems bring along the question of which RESs are produced more effectively. Therefore, in this research, RESs used for electricity generation in Turkey were analyzed by using generation data to show which one is more effective. Bi-objective multiple-criteria data envelopment analysis (BiO-MCDEA) method, a goal programming-based efficiency determination method, was used for the efficiency analysis conducted for five years between the years of 2014 and 2018. As a result of the analysis, geothermal energy came into prominence as the most effective RES for all of the years included in the solution. Geothermal energy was followed by biomass energy, wind energy, hydroelectric, and solar energy, respectively.


Author(s):  
S. E. Okosun ◽  
J. O. Fasakin ◽  
J. O. Basorun ◽  
I. O. Olamiju ◽  
E. A. Aluko

Energies ◽  
2019 ◽  
Vol 12 (3) ◽  
pp. 407 ◽  
Author(s):  
Dominik Dominković ◽  
Goran Krajačić

The energy transition of future urban energy systems is still the subject of an ongoing debate. District energy supply can play an important role in reducing the total socio-economic costs of energy systems and primary energy supply. Although lots of research was done on integrated modelling including district heating, there is a lack of research on integrated energy modelling including district cooling. This paper addressed the latter gap using linear continuous optimization model of the whole energy system, using Singapore for a case study. Results showed that optimal district cooling share was 30% of the total cooling energy demand for both developed scenarios, one that took into account spatial constraints for photovoltaics installation and the other one that did not. In the scenario that took into account existing spatial constraints for installations, optimal capacities of methane and thermal energy storage types were much larger than capacities of grid battery storage, battery storage in vehicles and hydrogen storage. Grid battery storage correlated with photovoltaics capacity installed in the energy system. Furthermore, it was shown that successful representation of long-term storage solutions in urban energy models reduced the total socio-economic costs of the energy system for 4.1%.


2019 ◽  
Vol 84 ◽  
pp. 02002
Author(s):  
Waldemar Dolega

In this paper, an analysis of issues related to development of national electric power network infrastructure in aspect of electric energy security is performed. Profile of network infrastructure in area of transmission and distribution is performed. Threats for electric energy supply security connected with transmission and distribution infrastructure are discussed. Both transmission and distribution electric power network are adapted for presently occurred typical conditions of electric energy demand and realization of internal tasks in normal conditions, but can create potential threat for electric energy supply security. In the context of forecasted increase of electric energy demand, inadequate power in National Electric Power System (NEPS) in domestic sources and available through intersystem connections, uneven location of sources and consumers at shortage of proper network transmission capacities, necessity of improvement of quality and electric energy supply reliability to final consumers and intensive development of renewable energy sources, present network infrastructure in area of transmission and distribution will be insufficient. Development of 400 and 220 kV transmission network, 110 kV distribution network especially in area of cities, MV distribution network especially in rural areas and realization of investments for improvement of export-import possibilities of NEPS will be necessary. Challenges for transmission and distribution system operators in area of network development are performed. They concern mainly investment sphere and area connected with preparation and construction of network investments.


2017 ◽  
Vol 207 ◽  
pp. 465-476 ◽  
Author(s):  
Konstantinos J. Chalvatzis ◽  
Alexis Ioannidis

Energy Policy ◽  
2006 ◽  
Vol 34 (5) ◽  
pp. 532-543 ◽  
Author(s):  
Aad Correljé ◽  
Coby van der Linde

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