The assessment of a micro-grid operation under optimal planning of Electric Energy Storage units: RSE’s case study

Introduction: there is much concern about power supply to small and remote villages and industrial facilities, such as crude oil and gas fields, in the present-day power industry. Systems using renewable energy sources are the most innovative solutions to this problem. The need for electric energy storage units complicates the use of renewable energy sources. Versatile types of storage units, working on different principles, are in use now. Flywheels, working on the principle of mechanical accumulation of energy, are of particular interest.Methods: both traditional and advanced designs of electric energy accumulation systems are analyzed in the article. Recent advancements in machine building, power engineering and structural materials are contributed into structural elements of an electric energy accumulation system.Results and discussion: basic strengths and weaknesses of electric energy storage units were identified in the course of the analysis. The author substantiated the need for new effective electric energy storage units working on the principle of mechanical accumulation of potential and kinetic energy. The conclusion is that advanced engineering solutions, such as flywheels and energy efficient reversible electric machines, can boost the efficiency of electric power storage systems. The solution underlying the design of an energy efficient storage unit is offered to electric power industry players.Conclusion: the storage unit under development has flywheels and energy efficient reversible electric machines. It improves the energy efficiency of both classical power generation systems and those using renewable energy sources.

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Increasing the energy efficiency of an electric train by installing electric energy storage units

Proceedings of Petersburg Transport University ◽

10.20295/1815-588x-2020-4-449-464 ◽

2020 ◽

Vol 17 (4) ◽

pp. 449-464

Author(s):

N. P. Kalinin ◽

◽

M. Yu. Obukhov ◽

Keyword(s):

Energy Efficiency ◽

Energy Storage ◽

Practical Importance ◽

Electric Energy ◽

Integrated Approach ◽

Economic Feasibility ◽

Rolling Stock ◽

Electric Energy Storage ◽

Storage Units ◽

Electric Train

Objective: To increase the energy effi ciency of the Russian multi-unit rolling stock of railways by installing electric energy storage devices. Methods: The goal is achieved by applying integrated approach method to the problem of multi-unit rolling stock energy efficiency, with focus on the practical signifi cance and economic feasibility of the results. Results: The solutions produced can serve as a basic concept for the modernization of domestic rolling stock. Practical importance: Concepts of an electric train with electric energy storage units based on Russian electric trains have been developed in order to increase their energy efficiency.

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Hybrid Electrical Storage and Power System for Household Tri-Generation Application

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.614-615.829 ◽

2012 ◽

Vol 614-615 ◽

pp. 829-836

Author(s):

X. P. Chen ◽

Y. D. Wang ◽

J. T. Li ◽

A. P. Roskilly

Keyword(s):

Energy Storage ◽

Power System ◽

Computational Simulation ◽

Electric Energy ◽

Electrical Energy ◽

Super Capacitor ◽

Electric System ◽

Electric Energy Storage ◽

Domestic Power

As a crucial constituent in tri-generation application, electric energy storage and power system plays an important role regarding efficient utilization of electrical energy in tri-generation. This paper presents the results showing that the optimization of electrical energy storage is able to promote the performance of tri-generation. Initial investigation, including laboratory tests and computational simulation using Dymola software, have been carried out. A case study exemplifies how diverse hybrid systems accommodate domestic power demands. The outcomes validate that the hybrid electric system consisting of generator, batteries and super capacitor can satisfy the electricity requirements for the household. it is also found that the hybrid system can supply the peak electricity demands where the integration of super capacitor can alleviate the overcharge of batteries in this application.

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Capacity Expansion Pathways for a Wind and Solar Based Power Supply and the Impact of Advanced Technology—A Case Study for Germany

Energies ◽

10.3390/en12020324 ◽

2019 ◽

Vol 12 (2) ◽

pp. 324 ◽

Cited By ~ 8

Author(s):

Philip Tafarte ◽

Marcus Eichhorn ◽

Daniela Thrän

Keyword(s):

Renewable Energy ◽

Energy Storage ◽

Power Supply ◽

Electric Energy ◽

Capacity Expansion ◽

Advanced Technology ◽

Series Data ◽

Solar Pv ◽

Electric Energy Storage

Wind and solar PV have become the lowest-cost renewable alternatives and are expected to dominate the power supply matrix in many countries worldwide. However, wind and solar are inherently variable renewable energy sources (vRES) and their characteristics pose new challenges for power systems and for the transition to a renewable energy-based power supply. Using new options for the integration of high shares of vRES is therefore crucial. In order to assess these options, we model the expansion pathways of wind power and solar photovoltaics (solar PV) capacities and their impact on the renewable share in a case study for Germany. Therefore, a numerical optimization approach is applied on temporally resolved generation and consumption time series data to identify the most efficient and fastest capacity expansion pathways. In addition to conventional layouts of wind and solar PV, our model includes advanced, system-friendly technology layouts in combination with electric energy storage from existing pumped hydro storage as promising integration options. The results provide policy makers with useful insights for technology-specific capacity expansion as we identified potentials to reduce costs and infrastructural requirements in the form of power grids and electric energy storage, and to accelerate the transition to a fully renewable power sector.

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