On the optimal mix of wind and solar generation in the future Chinese power system

It is difficult to discuss a phenomenon when one does not know precisely what it is. This problem is particularly vexing in the case of the Mafia. It has been argued that ‘the need for a definition [of the Mafia] is crucial; not just for any definition with some degree of contingent empirical plausibility, but for a definition with some analytical clout’ (1). The word ‘Mafia’ itself has travelled far to distant lands, such as the former Soviet Union. For instance, according to Arkadii Vaksberg, Russian journalist and author of The Russian Mafia, the Mafia is ‘the entire soviet power-system, all its ideological, political, economical and administrative manifestations’ (2). In an article published in a magazine for British executives dealing with Russia, the label Mafiosi is used to lump together bureaucrats, smugglers from the Caucasus, the CPSU nomenklatura accused of embezzling state funds, the late British businessman Robert Maxwell and many others (3).

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Frequency Control Reserve via Micro Grid for the Future Renewable Malaysian Power System

2018 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC) ◽

10.1109/appeec.2018.8566361 ◽

2018 ◽

Author(s):

Norhafiz Bin Salim ◽

Aziah Binti Khamis ◽

Aimie Nazmin Bin Nazmin ◽

Nor Aira Binti Zambri

Keyword(s):

Power System ◽

Frequency Control ◽

The Future ◽

Micro Grid

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Evaluating the Potential Contribution of District Heating to the Flexibility of the Future Italian Power System

Energies ◽

10.3390/en15020584 ◽

2022 ◽

Vol 15 (2) ◽

pp. 584

Author(s):

Chiara Magni ◽

Sylvain Quoilin ◽

Alessia Arteconi

Keyword(s):

Power Systems ◽

Power System ◽

Large Scale ◽

District Heating ◽

Energy System ◽

Heat Pumps ◽

Electricity Sector ◽

Potential Contribution ◽

The Future ◽

Promising Solution

Flexibility is crucial to enable the penetration of high shares of renewables in the power system while ensuring the security and affordability of the electricity dispatch. In this regard, heat–electricity sector coupling technologies are considered a promising solution for the integration of flexible devices such as thermal storage units and heat pumps. The deployment of these devices would also enable the decarbonization of the heating sector, responsible for around half of the energy consumption in the EU, of which 75% is currently supplied by fossil fuels. This paper investigates in which measure the diffusion of district heating (DH) coupled with thermal energy storage (TES) units can contribute to the overall system flexibility and to the provision of operating reserves for energy systems with high renewable penetration. The deployment of two different DH supply technologies, namely combined heat and power units (CHP) and large-scale heat pumps (P2HT), is modeled and compared in terms of performance. The case study analyzed is the future Italian energy system, which is simulated through the unit commitment and optimal dispatch model Dispa-SET. Results show that DH coupled with heat pumps and CHP units could enable both costs and emissions related to the heat–electricity sector to be reduced by up to 50%. DH systems also proved to be a promising solution to grant the flexibility and resilience of power systems with high shares of renewables by significantly reducing the curtailment of renewables and cost-optimally providing up to 15% of the total upward reserve requirements.

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Is Sicily the future of Russia? Private protection and the rise of the Russian Mafia

European Journal of Sociology ◽

10.1017/s0003975600006858 ◽

1994 ◽

Vol 35 (2) ◽

pp. 224-258 ◽

Cited By ~ 70

Author(s):

Federico Varese

Keyword(s):

Soviet Union ◽

Power System ◽

Former Soviet Union ◽

Soviet Power ◽

The Caucasus ◽

The Future ◽

Private Protection ◽

Definition Of

It is difficult to discuss a phenomenon when one does not know precisely what it is. This problem is particularly vexing in the case of the Mafia. It has been argued that ‘the need for a definition [of the Mafia] is crucial; not just for any definition with some degree of contingent empirical plausibility, but for a definition with some analytical clout’. The word ‘Mafia’ itself has travelled far to distant lands, such as the former Soviet Union. For instance, according to Arkadii Vaksberg, Russian journalist and author of The Russian Mafia, the Mafia is ‘the entire soviet power-system, all its ideological, political, economical and administrative manifestations’. In an article published in a magazine for British executives dealing with Russia, the label Mafiosi is used to lump together bureaucrats, smugglers from the Caucasus, the cpsunomenklatura accused of embezzling state funds, the late British businessman Robert Maxwell and many others.

Download Full-text