scholarly journals Energy Recuperation as One of the Factors Improving the Energy Efficiency of Mining Battery Locomotives

2020 ◽  
Vol 28 (4) ◽  
pp. 253-258
Author(s):  
Bartosz Polnik ◽  
Krzysztof Kaczmarczyk ◽  
Andrzej Niedworok ◽  
Ralph Baltes ◽  
Elisabeth Clausen
Keyword(s):  
Noble Metals ◽  
Electric Energy ◽  
Mining Industry ◽  
Hydrogen Emission ◽  
Electric Energy Consumption ◽  
Energy Recuperation ◽  
The World ◽  
Operational Change ◽  
Copper Mines ◽  
And Control

AbstractMining industry is currently one of the biggest industries in the world. All mines produce “indispensable” minerals, starting from fuels such as coal and ending with noble metals such as gold or copper. Mines in the world compete in the volumes of mined minerals what requires use of state-of-the-art, more efficient and, and what is more important, safer machines. Such trend favors development of technology and mobilize engineers to adapt the technologies that were used so far in easier environment to the needs of the mining industry.The article presents the issue of energy recuperation in mining battery locomotives. Simulation tests of the power supply and control system of the Lea type battery locomotive are discussed. The results of tests on the electric energy consumption of the locomotive during the operational change in the mine were presented, which were referred to the simulation results. Factors influencing the efficiency of energy recovery and the risk resulting from hydrogen emission in the recuperation process have been indicated. Also discussed is the study of the concentration of hydrogen concentration emitted from the battery of lead-acid cells during their recharging in the process of electrical braking with energy recuperation.

scholarly journals Methodology of testing and optimal setting of an asynchronous traction drive for electric vehicles

2018 ◽  
Vol 234 ◽  
pp. 02003 ◽  
Author(s):  
Vasil Dimitrov
Keyword(s):  
Electric Vehicles ◽  
Asynchronous Motor ◽  
Electric Energy ◽  
Electric Energy Consumption ◽  
Software Products ◽  
Speed Regulation ◽  
Wide Range ◽  
Special Software ◽  
Optimal Setting ◽  
And Control

This paper presents a methodology of tests of traction asynchronous drives applied in electric vehicles. It is similar to Urban Driving Cycle ECE-15 (UDC). The objective of the research is to verify the developed methodology through tests performed on a laboratory simulator, which consists of energy-saving asynchronous motor controlled by a frequency inverter (converter). Vector Control on the drive is used for smooth speed regulation over a wide range at high values of efficiency and power factor. Contemporary measuring and control devices and special software products are used for capturing the dynamic characteristics when starting, stopping and changing the speed set point of the drive. Some of tests are presented and an experimental verification of the developed methodology is made. An optimal setting of the drive parameters can be made to minimize the electric energy consumption.

scholarly journals A digital method for correcting planned electric energy consumption as a step to the Energynet market

2018 ◽  
Vol 44 ◽  
pp. 00073
Author(s):  
Oleg Russkov ◽  
Sergei Saradszhivili
Keyword(s):  
Energy Consumption ◽  
Electricity Market ◽  
Electric Energy ◽  
Digital Method ◽  
High Tech ◽  
Metallurgical Enterprise ◽  
Electric Energy Consumption ◽  
Industrial Enterprises ◽  
Time Basis ◽  
And Control

Creating the modern high-tech industry should be viewed as a fusion of material and digital production and control methods. Industrial enterprises with uneven electric energy consumption, which have failed to adapt to the requirements of modern digital wholesale electricity market, have to spend significant money to pay for hourly deviations of electric energy, whose price constantly grows. A digital method for correcting planned electric energy consumption based on the theory of games is offered to reduce the costs of these enterprises, which have no possibility for regulating own load on a real time basis. The updating is carried out depending on hourly relations of prices on the wholesale electric energy market in order to exclude the risks of making unprofitable hourly transactions. An algorithm of the proposed method is provided and a predictive model developed on its basis is described and positive results of its testing on the basis of a metallurgical enterprise.

scholarly journals Prospects of the Russian Coal Industry in the Conditions of Transition to a New Energy Pattern

2020 ◽  
Vol 9 (4) ◽  
pp. 1831-1835
Keyword(s):  
Energy Production ◽  
Electric Energy ◽  
Electricity Consumption ◽  
Coal Industry ◽  
Electric Energy Consumption ◽  
The World ◽  
New Energy ◽  
Forecast Models ◽  
To Come ◽  
Competitive Products

The article analyzes the prospects for changes in the volume of exports of Russian coal due to the reduction of its consumption for energy production by the importing countries. The importance of Russian power generating coal for the energy supply to the world as a whole and to individual importing regions in particular is shown. It is justified that a radical and abrupt refusal to use coal as an energy source in the next few years would hardly be possible because the per capita and the total electric energy consumption has been growing all over the world. To a large extent, this is due to the increase in the number of data centers around the world, which centers do not yet have enough “green” sources of energy to ensure the uninterrupted operation thereof. Therefore, coal exports from Russia to the European countries, China and DPRK will continue to grow in the years to come; this is confirmed by the forecast models built by the authors, which models consider changes in the coal and electricity consumption by major importers. By the time the conditions are ensured for the majority of countries in the world to abandon coal as a source of electricity in order to stop air pollution, Russia will need to find opportunities for its alternative use, an example of which would be the creation and development of production of competitive products of the coal chemical industry.

scholarly journals Renewable Energy Sources Integration and Control in Railway Microgird

2021 ◽  
Vol 9 (VI) ◽  
pp. 4686-4709
Author(s):  
Jonnalagadda Rithvik Thanmay
Keyword(s):  
Renewable Energy ◽  
Renewable Energy Sources ◽  
Electric Energy ◽  
Energy Sources ◽  
Hybrid Energy ◽  
Distributed Generator ◽  
Electric Energy Consumption ◽  
Smart Control ◽  
Dc Bus ◽  
And Control

The traffic rail increase implies an increase in the electric energy consumption. Hybridizing the railway sub-stations with hybrid energy sources based on renewable energy sources and storage units connected to a DC bus may be a solution to contribute to the partial independence of energy producers in the sector of traffic rail. A smart control is highly recommended in order to avoid disturbing the traffic or the energy quality of railway lines. This project proposes a reversible, self-adaptive, autonomous and intelligent distributed generator connected to the catenary thanks to the DC bus distributed control by the multi-agent system. The results analysis has shown that the proposed control architecture can be a solution to face the issues related to the traffic railway issues.

scholarly journals A Stochastic Estimation Framework for Yearly Evolution of Worldwide Electricity Consumption

Forecasting ◽  
2021 ◽  
Vol 3 (2) ◽  
pp. 256-266
Author(s):  
Qasem Abu Al-Haija
Keyword(s):  
Energy Demand ◽  
Electric Energy ◽  
Electricity Consumption ◽  
Ar Model ◽  
Electric Energy Consumption ◽  
Electricity Use ◽  
Prediction Scheme ◽  
The World ◽  
Electrical Engineers ◽  
Regression Error

The determination of electric energy consumption is remarked as one of the most vital objectives for electrical engineers as it is highly essential in determining the actual energy demand made on the existing electricity supply. Therefore, it is important to find out about the increasing trend in electric energy demands and use all over the world. In this work, we present a prediction scheme for the progression of worldwide aggregates of cumulative electricity consumption using the time series of the records released annually for the net electricity use throughout the world. Consequently, we make use of an autoregressive (AR) model by retaining the best possible autoregression order recording the highest regression accuracy and the lowest standardized regression error. The resultant regression scheme was proficiently employed to regress and forecast the evolution of next-decade data for the net consumption of electricity worldwide from 1980 to 2019 (in billion kilowatt-hours). The experimental outcomes exhibited that the highest accuracy in regressing and forecasting the global consumption of electricity is 95.7%. The prediction results disclose a linearly growing trend in the amount of electricity issued annually over the past four decades’ observation for the global net electricity consumption dataset.

scholarly journals Monitoring of Groundwater Quality With Cokriging of Geochemical and Geoelectrical Measurements

2021 ◽  
Vol 4 (1) ◽  
pp. 97-106
Author(s):  
Jarosław Zawadzki ◽  
Piotr Fabijańczyk ◽  
Wiktor Treichel
Keyword(s):  
Groundwater Quality ◽  
Mining Industry ◽  
Total Dissolved Solids ◽  
Hazardous Substances ◽  
Chemical Analyses ◽  
Dissolved Solids ◽  
Geostatistical Methods ◽  
Solids Concentration ◽  
The World ◽  
Copper Mines

Abstract The study presents the possibility of using geostatistical methods for monitoring groundwater quality. Poland is one of the largest copper producers in the world. However, the extraction and production of copper requires constant care for the natural environment. Reservoir Żelazny Most which is situated in South – Western Poland was designed to store flotation tailings out of nearby copper mines. It is one of the biggest industrial dumps in the world. The reservoir stores huge amounts of tailings and industrial water. Water migrating from dump to groundwater could be a potential source of contamination with chlorides, sulphates, heavy metals, and other hazardous substances used in ore separation process in the copper mining industry, like detergent and phenols. Monitoring system around Żelazny Most dump, which was designed to track harmful substances concentrations in groundwater, contains measuring wells and piezometers. They are used to collect groundwater samples for chemical analyses. The idea of the study was to integrate information provided by chemical analyses and geoelectrical measurements by cokriging method, utilizing correlation between electrical resistance of the soil solution and total dissolved solids concentration in groundwater. This enabled to obtain spatial distribution of total dissolved solids concentrations in groundwater at the part of eastern foreground of Żelazny Most dump.

Invasive Shot Hole Borers Euwallacea fornicatus, E. kuroshio, and E. perbrevis (Coleoptera: Curculionidae: Scolytinae)

EDIS ◽  
2020 ◽  
Vol 2020 (1) ◽  
pp. 7
Author(s):  
Demian F. Gomez ◽  
Jiri Hulcr ◽  
Daniel Carrillo
Keyword(s):  
South Africa ◽  
Invasive Species ◽  
Prevention And Control ◽  
Economic Impacts ◽  
Forest Resources ◽  
Economic Damage ◽  
Ambrosia Beetles ◽  
Invasive Insects ◽  
The World ◽  
And Control

Invasive species, those that are nonnative and cause economic damage, are one of the main threats to ecosystems around the world. Ambrosia beetles are some of the most common invasive insects. Currently, severe economic impacts have been increasingly reported for all the invasive shot hole borers in South Africa, California, Israel, and throughout Asia. This 7-page fact sheet written by Demian F. Gomez, Jiri Hulcr, and Daniel Carrillo and published by the School of Forest Resources and Conservation describes shot hole borers and their biology and hosts and lists some strategies for prevention and control of these pests. http://edis.ifas.ufl.edu/fr422

Knowledge and Awareness of Dengue Fever

2018 ◽  
pp. 219-222
Author(s):  
Y. Arockia Suganthi ◽  
Chitra K. ◽  
J. Magelin Mary
Keyword(s):  
Dengue Fever ◽  
Prevention And Control ◽  
Control Measures ◽  
Infection Transmission ◽  
Standard Guideline ◽  
The World ◽  
Different Types ◽  
Prevention And Control Measures ◽  
Dengue Prevention ◽  
And Control

Dengue fever is a painful mosquito-borne infection caused by different types of virus in various localities of the world. There is no particular medicine or vaccine to treat person suffering from dengue fever. Dengue viruses are transmitted by the bite of female Aedes (Ae) mosquitoes. Dengue fever viruses are mainly transmitted by Aedes which can be active in tropical or subtropical climates. Aedes Aegypti is the key step to avoid infection transmission to save millions of people in all over the world. This paper provides a standard guideline in the planning of dengue prevention and control measures. At the same time gives the priorities including clinical management and hospitalized dengue patients have to address essentially.

Measurements of electric energy consumption in a low energy building in Slovak climatic conditions

2012 ◽  
Vol 7 (3) ◽  
pp. 23-32 ◽  
Author(s):  
Miloslav Bagoňa ◽  
Dušan Katunský ◽  
Martin Lopušniak ◽  
Marián Vertaľ
Keyword(s):  
Energy Consumption ◽  
Electric Energy ◽  
Climatic Conditions ◽  
Low Energy ◽  
Electric Energy Consumption
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