scholarly journals The Current State of Mongolia’s Energy Sector and Prospects for Development with Entry Into the Russian and Nea Energy Markets

2020 ◽  
pp. 5-11
Author(s):  
S. Batmunkh ◽  
S. Batkhuyag ◽  
P. Ochirbat ◽  
K. Enkhjargal ◽  
B. Bayar ◽  
...  
Keyword(s):  
Power Systems ◽  
Transmission Lines ◽  
Raw Materials ◽  
Integrated Approach ◽  
Energy System ◽  
Energy Sector ◽  
Energy Markets ◽  
Transportation Systems ◽  
Functional Connections ◽  
Development Levels

The paper addresses research into the prospects for the development of Mongolia’s energy sector with its gradual entry into the international energy markets of neighboring countries through the involvement of local resource potential and the expansion of energy transmission and transportation systems. Rational use of rich primary natural energy resources (coal, solar energy, and nuclear energy), in combination with a favorable geographic location of the country, should contribute to the achievement of the crucial goals to transform Mongolia into an energy exporting-importing country, which is stipulated by the raw materials and energy strategy of the country for the next 15-30 years. In this context, the research considers an integrated approach to the development of the energy system of Mongolia and highlights three hierarchical development levels of backbone transmission lines. The research outcomes are presented as a structure of Mongolia’s energy sector with internal and external functional connections. The conclusion emphasizes the need to build a scientifically grounded rational network structure of the main backbone transmission lines, which will shape the Unified energy system with developed connections to the electric power systems of Russia and China, and through them, to the super grid of the NEA countries. This will allow Mongolia to occupy its place in a successfully developing energy and economic space of the region, which is beneficial not only for Mongolia but also for the NEA countries.

ELECTRICITY MARKET OF REGIONS OF UKRAINE IN THE CONTEXT OF MODERNIZATION CHANGES

2017 ◽  
Author(s):  
Serhii Pysanko ◽  
◽  
Roman Romanyuk ◽  
Olena Pavlova ◽  
Kostiantyn Pavlov ◽  
...  
Keyword(s):  
Power Systems ◽  
Electric Power ◽  
Electricity Market ◽  
Power Plants ◽  
Raw Materials ◽  
Thermal Power ◽  
Electric Power Industry ◽  
Energy System ◽  
Power Industry ◽  
Large Power

Electricity market of regions and Ukraine in the context of modernization changes The article considers the importance, structure and electricity in the fuel and energy complex of the country and regions. It was found that in the production of electricity used (TPP), hydraulic (HPP) and hydroaccumulative (PSP), nuclear (NPP) stations. The connection of electric power industry with industry is shown. The largest power plants of the regions of Ukraine were inspected. The mechanism of operation of condensing and thermal power plants is clarified. The defining principles of development and location of electric power of Ukraine are noted. The place and role of nuclear power plants in ensuring the principles of energy security of the country are described. The peculiarities of the problem of the electric power industry are highlighted, which are primarily the use of low-risk nuclear reactors, as well as the still current import of uranium ores as raw materials from Russia. Utilization of NPP waste remains an unresolved problem. Large power plants have been structured into integrated power systems, which locally form a unified state energy system. Alternative power plants are listed as centers of economic electricity, their advantages in comparison with traditional types of energy are highlighted, and the disadvantages are also emphasized.

scholarly journals Analysis of the electric power potential as illustrated by the UES of Russia

2021 ◽  
pp. 21-26
Author(s):  
V.V. Trufanov ◽  
P.S. Drachev ◽  
V.V. Khanaev
Keyword(s):  
Power Systems ◽  
Transmission Lines ◽  
Power Transmission ◽  
Power Grid ◽  
Electricity Consumption ◽  
Energy System ◽  
Power Transmission Lines ◽  
Available Transfer Capability ◽  
Almost Everywhere ◽  
Generating Capacity

he paper presents an analysis of the current state of the Unified Energy System (UES) of Russia, which aims to identify "weak points," regional shortage and excess energy systems, locations of the electricity consumption growth, and seeks to determine the technical potential of the power grid for electricity transmission. This analysis relies on the models developed for optimization in terms of the maximum excess capacity for the entire Unified Energy System of Russia and for individual regions of the country in the context of the existing mix of generating capacity and cross-regional structure of the power grid. Calculations were made for the conditions corresponding to the reported performance of the Unified Energy System of Russia in 2020. The cross-regional power grid of the Unified Energy System of Russia is capable of covering the capacity needs of all the country's power systems, and almost everywhere has a significant available transfer capability of power transmission lines.

scholarly journals UKRAINIAN ENERGY POLICY: EFFICIENCY AND WAYS FOR IMPROVEMENT

2020 ◽  
Author(s):  
Yevheniia Ziabina ◽  
◽  
Tetyana Pimonenko ◽  
Keyword(s):  
National Security ◽  
Energy Policy ◽  
Environmental Sustainability ◽  
Energy Security ◽  
Integrated Approach ◽  
Energy System ◽  
Time Frame ◽  
Energy Sector ◽  
Economic Security ◽  
Efficient Operation

The aim of the article is to analyze the current energy policy of Ukraine and systematize ways to increase its efficiency within the concept of transition to a carbon-neutral economy, the state of the energy sector in Ukraine and develop theoretical recommendations in the context of sustainable development. One of the main tasks of national security is to develop the efficient functioning of the energy system. Energy security is a strategic component of national security, which aims to ensure the stable implementation of sustainable socio-ecological and economic development of the country. It is necessary to note the main problematic areas of energy security development: inefficient use of fuel and energy resources, low level of energy saving and energy efficiency, high dependence of the country on monopolists of fuel and energy structures, unstable and shadow form of tariff formation. In recent decades, Ukraine has accumulated a large number of problems that need to be addressed quickly using an integrated approach. Ukraine has supported the European Green Deal, and has set a course for the development of a carbon-free economy, which results in a complete reset and reshaping of the energy sector. This vector of development is followed by the reform of all structural elements of the country and re-profiling to a new (environmental) level. The article the bibliographic analysis of the researched problem concerning modernization of energy sector and directions of development of energy policy as a structural link of national security is carried out, identifies the main problems of sustainability of national energy policy, analyzes the indicators of energy trilemma (energy security, energy availability, environmental sustainability), presents recommendations on the prospects of energy development and preservation of energy, environmental and economic security. Prospects for further development of the study are to develop clear points for improving the work of the energy sector, taking into account the time frame and priorities of development, which will ensure the efficient operation of all sectors of the economy.

The Modelling and Simulation of 330 KV, 600 MW Shiroro Substation in the DIgSILENT Environment for Integration of Hybrid Solar PV – Hydro System to Improve Power Supply in the Federal Capital Territory (FCT) of Abuja from Shiroro, Nigeria

2021 ◽  
Vol 6 (4) ◽  
pp. 22-29
Author(s):  
Onyinyechi A. Uwaoma ◽  
Jonas N. Emechebe ◽  
Muhammed Uthman ◽  
Omotayo Oshiga ◽  
Samuel Olisa
Keyword(s):  
Power Systems ◽  
Transmission Lines ◽  
Power Supply ◽  
Fossil Fuels ◽  
Renewable Energy Sources ◽  
Electrical Energy ◽  
Energy System ◽  
Modelling And Simulation ◽  
Solar Pv ◽  
Energy Effect

This research paper focuses on modelling and simulation of 330 KV, 600 MW Shiroro Substation in the DIgSILENT Environment for the integration of Hybrid Solar PV – Hydro System to improve power supply in the Federal Capital Territory (FCT) of Abuja, Nigeria. A hybrid energy system is a system that combines multiple types of energy generations to satisfy the demand of the users effectively and efficiently. The Solar Photovoltaic (PV)/Hydro hybrid system consists of electrical energy generated from solar PV and hydro energy. Effect of environmental issues, reduction of fossil fuels in addition to its high cost have actively encouraged interest in great integration of renewable energy sources in power systems. This work capitalized on the possibilities of harnessing commercial solar energy and feeding it to the National grid through a nearby 330 KV substation at Shiroro Dam. The simulation is carried out in DIgSILENT (Power factory) environment. The Shiroro 16 kV, 330 kV, 600 MW Transmission Lines are modelled, and results of simulations of the five bus bars (Jebba, Shiroro, Gwagwalada, Katampe and Kaduna) voltages directly connected to Shiroro Network are: 331.8kV, 331.7 kV, 329.3 kV, 325.6 kV and 332.2 kV, respectively. All the values are within the Operational and Statutory Limits of the National Grid Code.

scholarly journals Biogas from Anaerobic Digestion as an Energy Vector: Current Upgrading Development

Energies ◽  
2021 ◽  
Vol 14 (10) ◽  
pp. 2742
Author(s):  
Raquel Iglesias ◽  
Raúl Muñoz ◽  
María Polanco ◽  
Israel Díaz ◽  
Ana Susmozas ◽  
...  
Keyword(s):  
Fossil Fuels ◽  
Business Models ◽  
Biogas Production ◽  
Raw Materials ◽  
Vector Current ◽  
Energy System ◽  
Transport Sector ◽  
Environmentally Sustainable ◽  
Legislative Framework ◽  
Materials Used

The present work reviews the role of biogas as advanced biofuel in the renewable energy system, summarizing the main raw materials used for biogas production and the most common technologies for biogas upgrading and delving into emerging biological methanation processes. In addition, it provides a description of current European legislative framework and the potential biomethane business models as well as the main biogas production issues to be addressed to fully deploy these upgrading technologies. Biomethane could be competitive due to negative or zero waste feedstock prices, and competitive to fossil fuels in the transport sector and power generation if upgrading technologies become cheaper and environmentally sustainable.

scholarly journals A Method for Autonomous Navigation and Positioning of UAV Based on Electric Field Array Detection

Sensors ◽  
2021 ◽  
Vol 21 (4) ◽  
pp. 1146 ◽  
Author(s):  
Yincheng Li ◽  
Wenbin Zhang ◽  
Peng Li ◽  
Youhuan Ning ◽  
Chunguang Suo
Keyword(s):  
Mathematical Model ◽  
Power Systems ◽  
Transmission Lines ◽  
Autonomous Navigation ◽  
Strength Distribution ◽  
Field Source ◽  
Navigation Algorithm ◽  
Safety Warning ◽  
Positioning Algorithm ◽  
Navigation Equipment

At present, the method of using unmanned aerial vehicles (UAVs) with traditional navigation equipment for inspection of overhead transmission lines has the limitations of expensive sensors, difficult data processing, and vulnerable to weather and environmental factors, which cannot ensure the safety of UAV and power systems. Therefore, this paper establishes a mathematical model of spatial distribution of transmission lines to study the field strength distribution information around transmission lines. Based on this, research the navigation and positioning algorithm. The data collected by the positioning system are input into the mathematical model to complete the identification, positioning, and safety distance diagnosis of the field source. The detected data and processing results can provide reference for UAV obstacle avoidance navigation and safety warning. The experimental results show that the positioning effect of the positioning navigation algorithm is obvious, and the positioning error is within the range of use error and has good usability and application value.

scholarly journals Multi-Objective Optimization of Autonomous Microgrids with Reliability Consideration

Energies ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4466
Author(s):  
Maël Riou ◽  
Florian Dupriez-Robin ◽  
Dominique Grondin ◽  
Christophe Le Loup ◽  
Michel Benne ◽  
...  
Keyword(s):  
Power Systems ◽  
Rural Areas ◽  
Energy System ◽  
Design Stage ◽  
Multi Objective Optimization ◽  
Renewable Energy Resources ◽  
Nsga Ii ◽  
Renewable Integration ◽  
Multi Objective ◽  
Trade Offs

Microgrids operating on renewable energy resources have potential for powering rural areas located far from existing grid infrastructures. These small power systems typically host a hybrid energy system of diverse architecture and size. An effective integration of renewable energies resources requires careful design. Sizing methodologies often lack the consideration for reliability and this aspect is limited to power adequacy. There exists an inherent trade-off between renewable integration, cost, and reliability. To bridge this gap, a sizing methodology has been developed to perform multi-objective optimization, considering the three design objectives mentioned above. This method is based on the non-dominated sorting genetic algorithm (NSGA-II) that returns the set of optimal solutions under all objectives. This method aims to identify the trade-offs between renewable integration, reliability, and cost allowing to choose the adequate architecture and sizing accordingly. As a case study, we consider an autonomous microgrid, currently being installed in a rural area in Mali. The results show that increasing system reliability can be done at the least cost if carried out in the initial design stage.

Accidents in the Energy Sector and Energy Infrastructure Attacks in the Context of Energy Security

2015 ◽  
Vol 6 (2) ◽  
pp. 271-283 ◽  
Author(s):  
Peter Burgherr ◽  
Jennifer Giroux ◽  
Matteo Spada
Keyword(s):  
Transmission Lines ◽  
Energy Security ◽  
Energy Sector ◽  
Severe Accident ◽  
Joint Analysis ◽  
Regional Patterns ◽  
Energy Infrastructure ◽  
Independent Events ◽  
Energy Chain ◽  
Energy Infrastructures

The risks of technological accidents in the energy sector and their potentially disastrous effects have been analyzed over the past decades, and are nowadays generally recognized to constitute a key factor in an encompassing assessment of energy security. In contrast, the issue of intentional attacks on energy infrastructures has received increased attentionmore recently, particularly due to growing dependence of energy imports fromand transit routes through regions considered less reliable and politically stable. Both types of risks, however, illuminate different vulnerabilities. Therefore, the focus of the present analysis was on these two risk categories: accidents and intentional attacks in the energy sector. Risk assessment resultswere based on quantitative data from the databases ENSAD (Energy-related Severe Accident Database) and EIAD (Energy Infrastructure Attack Database). Evaluations examined similarities and differences between technological accidents and intentional attacks in terms of frequencies and consequences, considering time-series trends and regional patterns. A key difference is that accidents are typically rare and independent events, whereas intentional attacks are often multiple events and concentrated both in time and space, resulting in distinct hotspots. Concerning consequences, the severity distribution for accidents generally stretches over a broad range, with low-probability high-consequence events being an important factor of both energy chain performance and as a measure of risk aversion. On the other hand, these types of consequences are usually less important for intentional attacks because targeted energy infrastructures are often of “linear” nature (e.g. pipelines and transmission lines) that are difficult to protect and usually lead through remote areas with low population density. However, when frequently attacked substantial business and supply disruptions can occur. In summary, the joint analysis of accidents and intentional attacks provides a comprehensive and complementary approach on two types of risks that have rather different properties, but are essential in an energy security perspective.

The Australian Energy Transition as a Federalism Challenge: (Un)cooperative Energy Federalism?

2021 ◽  
pp. 1-25
Author(s):  
Anne Kallies
Keyword(s):  
Energy Transition ◽  
Energy System ◽  
Energy Sector ◽  
State Governments ◽  
National Importance ◽  
Energy Environment ◽  
Timely Fashion ◽  
Rapid Transition ◽  
Legal Frameworks ◽  
Cooperative Federalism

Abstract The law and regulation of the energy sector in Australia is subject to overlapping responsibilities of both federal and state governments. Crucially for energy transition efforts, neither energy, environment nor climate is mentioned in the Australian Constitution. Australia has a tradition of creative cooperative federalism solutions for responding to problems of national importance. In the energy sector this has resulted in an intricate national framework for energy markets, which relies on mirror legislation passed by participating states, with oversight by state and federal executive governments. Independently of these frameworks, both federal and state governments have passed climate change legislation, which crucially includes renewable energy support mechanisms. At a time when a rapid transition to a decarbonized energy system is essential, legal frameworks struggle to respond in a timely fashion. The political discourse around energy has become increasingly toxic – reflecting a dysfunctional state–federal relationship in energy and climate law. Australia needs to consider whether its cooperative federalism solutions are sufficient to support the energy transition and how climate law at the state and federal levels interacts with energy market legal frameworks.

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