scholarly journals Analysis, Evaluation and Simulation of Railway Diesel-Electric and Hybrid Units as Distributed Energy Resources

2019 ◽  
Vol 9 (17) ◽  
pp. 3605 ◽  
Author(s):  
Ana García-Garre ◽  
Antonio Gabaldón
Keyword(s):  
Power System ◽  
Demand Response ◽  
Smart Grids ◽  
Cost Effective ◽  
Energy System ◽  
Electric Power System ◽  
Economic Sustainability ◽  
Distributed Energy ◽  
Reliable Operation ◽  
The Future

The objective of this paper involves the analysis, identification and evaluation of different possibilities offered by technology for the improvement and the management of the use of energy and hybridization in railways: On board generation, demand response and energy storage, both in traction and auxiliary loads, considering the aggregation of resources and its stochastic nature. The paper takes into account the importance of efficient use of energy in railways, both currently (trains in service, prototypes) and in the future, considering the trends driven by energy policy scenarios (2030–2050) that will affect service and operation of units during their lifetime. A new activity has been considered that will be relevant in the future in the framework of a new electricity supply paradigm: Smart-Grids. According to this paradigm, the interaction of the Electric Power System and the Railway Supply System (somehow embedded in the Power System) will bring new opportunities for the collaboration of these two systems to perform, in a wise economic fashion, a better and more reliable operation of the complete energy system. The paper is focused on a mixed profile with low-medium traffic (passenger and freight): The first part of the route is electrified (3 kV DC catenary) whereas the second part is not electrified. Results justify that complex policies and objectives bring an opportunity to make cost-effective the hybridization of railway units, especially in low/medium traffic lines, which improves their social and economic sustainability.

scholarly journals The Role of Demand Response in the Future Renewable Northern European Energy System

Energy ◽  
2021 ◽  
pp. 121336
Author(s):  
J.G. Kirkerud ◽  
N.O. Nagel ◽  
T.F. Bolkesjø
Keyword(s):  
Demand Response ◽  
Energy System ◽  
Northern European ◽  
The Future

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

Energies ◽  
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.

The Future of Power System Restoration: Using Distributed Energy Resources as a Force to Get Back Online

2018 ◽  
Vol 16 (6) ◽  
pp. 30-41 ◽  
Author(s):  
Martin Braun ◽  
Johannes Brombach ◽  
Christian Hachmann ◽  
Dario Lafferte ◽  
Alexander Klingmann ◽  
...  
Keyword(s):  
Power System ◽  
Energy Resources ◽  
Distributed Energy Resources ◽  
Distributed Energy ◽  
Power System Restoration ◽  
The Future ◽  
System Restoration

scholarly journals A Multi-objective Scheduling Optimization Model for Hybrid Energy System Connected with Wind-Photovoltaic-Conventional Gas Turbines, CHP Considering Heating Storage Mechanism

Energies ◽  
2019 ◽  
Vol 12 (3) ◽  
pp. 425 ◽  
Author(s):  
Yao Wang ◽  
Yan Lu ◽  
Liwei Ju ◽  
Ting Wang ◽  
Qingkun Tan ◽  
...  
Keyword(s):  
Demand Response ◽  
Gas Turbines ◽  
Energy System ◽  
Objective Functions ◽  
Distributed Energy ◽  
Operating Income ◽  
Hybrid Energy ◽  
Multi Objective ◽  
Load Demand ◽  
Load Fluctuation

In order to meet the user’s electricity demand and make full use of distributed energy, a hybrid energy system (HES) was proposed and designed, including wind turbines (WTs), photovoltaic (PV) power generation, conventional gas turbines (CGTs), incentive-based demand response (IBDR), combined heat and power (CHP) and regenerative electric (RE) boilers. Then, the collaborative operation problem of HES is discussed. First, the paper describes the HES’ basic structure and presents the output model of power sources and heating sources. Next, the maximum operating income and minimum load fluctuation are taken as the objective function, and a multi-objective model of HES scheduling is proposed. Then an algorithm for solving the model is proposed that comprises two steps: processing the objective functions and constraints into linear equations and determining the optimal weight of the objective functions. The selected simulation system is a microgrid located on an eastern island of China to comparatively analyze the influence of RE-heating storage (RE-HS) and price-based demand response (PBDR) on HES operation in relation to four cases. By analyzing the results, the following three conclusions are drawn: (1) HES can comprehensively utilize a variety of distributed energy sources to meet load demand. In particular, RE technology can convert the abandoned energy of WT and PV into heat during the valley load time, to meet the load demand combined with CHP; (2) The proposed multi-objective scheduling model of HES operation not only considers the maximum operating income but also considers the minimum load fluctuation, thus achieving the optimal balancing operation; (3) RE-HS and PBDR have a synergistic optimization effect, and when RE-HS and PBDR are both applied, an HES can achieve optimal operation results. Overall, the proposed decision method is highly effective and applicable, and decision makers could utilize this method to design an optimal HES operation strategy according to their own actual conditions.

The future electric power system: Impact of Power-to-Gas by interacting with other renewable energy components

2016 ◽  
Vol 5 ◽  
pp. 113-119 ◽  
Author(s):  
Editha Kötter ◽  
Ludwig Schneider ◽  
Frank Sehnke ◽  
Kay Ohnmeiss ◽  
Ramona Schröer
Keyword(s):  
Renewable Energy ◽  
Power System ◽  
Electric Power ◽  
Electric Power System ◽  
The Future ◽  
Power To Gas ◽  
Energy Components ◽  
System Impact

LNG Distributed Energy Brings New Opportunity for Port Power Optimization in China

2014 ◽  
Vol 1073-1076 ◽  
pp. 2634-2636
Author(s):  
Jing Zhu ◽  
Qun Gu
Keyword(s):  
Rapid Growth ◽  
Growth And Development ◽  
Power Optimization ◽  
Energy System ◽  
Small Scale ◽  
Distributed Energy ◽  
The Future ◽  
Distributed Energy System ◽  
Good For

This article tries to bring you an idea that using LNG distributed energy system in domestic ports. Ports used LNG instead of diesel as fuel for container trailers and bulk cargo loaders. The quantity of LNG consumption of port is in small scale with this way. LNG distributed energy will be good for port power optimization. It can decrease emission and improve port environment. Under the rapid growth and development of LNG application in China, it’s time to study this subject now. At the end of article, the author gives some questions about how to well use LNG distributed energy for deep studies in the future.

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