scholarly journals Regional Security Assessment of Integrated Energy Systems with Renewables in China: A Grid-Connected Perspective

2020 ◽  
Vol 12 (24) ◽  
pp. 10299
Author(s):  
Zhenyu Zhao ◽  
Huijia Yang
Keyword(s):  
Renewable Energy ◽  
Energy Security ◽  
Eastern China ◽  
Energy Systems ◽  
Clean Energy ◽  
Assessment Model ◽  
Potential Hazard ◽  
Regional Energy ◽  
Regional Interaction ◽  
Integrated Energy Systems

Stable and reliable integrated energy systems are one of the major issues related to sustainable regional and national energy development. Because most existing studies are conducted on whole countries, few address the effects of regional interaction and renewable energy. Therefore, a natural disaster risk assessment model (NDRAM) combined with spatial models is used as a general systematic tool to assess and resolve regional energy security, based on a framework of resources, generation, transmission, marketing and consumption, with 17 metrics. In particular, energy systems were treated as organic connected-units and their security status was regarded as a combined result of potential hazard and system vulnerability. The proposed method was applied to evaluate and classify the security situation of 31 Chinese provinces in 2016. The results showed that transmission had the most significant impact among five major risk sources. The closer grid connections have a stronger ability to deal with risks among regions, where renewables consumption could be better stimulated cross-regionally. In terms of a regional perspective, there is still a gap among different regions, and eastern China presented higher energy risk status. The most energy-hazard provinces are mainly in the east provinces with well-developed levels in Beijing, Tianjin and Shanghai. The least energy-vulnerable provinces are mainly in the abundant natural resources regions such as Inner Mongolia, Sichuan and Xinjiang. The NDRAM-based general model provides a systematic tool for quantitative assessment of regional energy security with a full accounting of regional interaction and renewable energy issues, which may help to develop clean energy, optimize system infrastructure and improve scientific management.

scholarly journals Optimal Design on Fossil-to-Renewable Energy Transition of Regional Integrated Energy Systems under CO2 Emission Abatement Control: A Case Study in Dalian, China

Energies ◽  
2021 ◽  
Vol 14 (10) ◽  
pp. 2879
Author(s):  
Xinxin Liu ◽  
Nan Li ◽  
Feng Liu ◽  
Hailin Mu ◽  
Longxi Li ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Optimal Design ◽  
Co2 Emission ◽  
Energy Demand ◽  
Energy Systems ◽  
Energy System ◽  
Mixed Integer ◽  
Total Annual Cost ◽  
Emission Abatement ◽  
Integrated Energy Systems

Optimal design of regional integrated energy systems (RIES) offers great potential for better managing energy sources, lower costs and reducing environmental impact. To capture the transition process from fossil fuel to renewable energy, a flexible RIES, including the traditional energy system (TES) based on the coal and biomass based distributed energy system (BDES), was designed to meet a regional multiple energy demand. In this paper, we analyze multiple scenarios based on a new rural community in Dalian (China) to capture the relationship among the energy supply cost, increased share of biomass, system configuration transformation, and renewable subsidy according to regional CO2 emission abatement control targets. A mixed integer linear programming (MILP) model was developed to find the optimal solutions. The results indicated that a 40.58% increase in the share of biomass in the RIES was the most cost-effective way as compared to the separate TES and BDES. Based on the RIES with minimal cost, by setting a CO2 emission reduction control within 40%, the RIES could ensure a competitive total annual cost as compared to the TES. In addition, when the reduction control exceeds 40%, a subsidy of 53.83 to 261.26 RMB/t of biomass would be needed to cover the extra cost to further increase the share of biomass resource and decrease the CO2 emission.

scholarly journals Coordinated Dispatch of Integrated Energy Systems Considering the Differences of Multiple Functional Areas

2019 ◽  
Vol 9 (10) ◽  
pp. 2103 ◽  
Author(s):  
Liusong Li ◽  
Weichao Jin ◽  
Meiyan Shen ◽  
Li Yang ◽  
Fei Chen ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Electric Vehicles ◽  
Transmission Lines ◽  
Distribution System ◽  
Energy Systems ◽  
Actual Distribution ◽  
Integrated Energy Systems ◽  
Transmission Distance ◽  
Proposed Model ◽  
Functional Areas

A large amount of wind turbine power and photovoltaic power is abandoned in many areas with abundant renewable energy due to thermal-electric coupling, inadequate local consumption capacity, and limited capacity of transmission lines, etc. To solve the above problems, a coordinated dispatching method for integrated energy systems is proposed in this paper. Firstly, the spatiotemporal characteristics of diversified loads in multiple functional areas are introduced, including the inertia and elasticity of heating/cooling loads, the spatiotemporal distribution of electric vehicles, and the optimum transmission distance of diversified loads, etc. Secondly, a coordinated dispatching model of integrated energy systems is proposed, which considers the differences of multiple functional areas and various forms of energy systems. Finally, an actual distribution system in Jianshan District, Haining, Zhejiang Province of China is investigated for demonstrating the effectiveness of the proposed model. The results illustrate that the proposed model could effectively improve the consumption rate of renewable energy and reduce the volatility of renewable energy by considering the coordination of electric vehicles, tie lines, and heating/cooling systems in multiple functional areas.

A Framework for the Development of Technical Requirements for Renewable Energy Systems at a Small-Scale Airport Facility

2015 ◽  
Author(s):  
Troy V. Nguyen ◽  
Aldo Fabregas Ariza ◽  
Nicholas W. Miller ◽  
Ismael Cremer
Keyword(s):  
Renewable Energy ◽  
Renewable Energy Sources ◽  
Energy Systems ◽  
Clean Energy ◽  
Target System ◽  
Energy Sources ◽  
Small Scale ◽  
Renewable Energy Systems ◽  
Technical Requirements

Airports are key components of the global transportation system and are the subject of continuous sustainability improvements. Promoting clean energy sources and energy-efficient practices can help attain major sustainability goals at airports around the world. Although small airports are greater in number, most of the “sustainability” attention has been given to large airports. Small airports are typically located in rural areas, making them excellent candidates for renewable energy. This paper focuses on the planning and selection of renewable energy systems as a strategic method to reduce energy use and increase electric power reliability at small-scale airport facilities. The target system may use a combination of renewable energy sources to produce electrical power for the on-site facilities. The framework details include methods of energy collection, power production, and energy storage that are environmentally sound. A small airport serving a dual role as a flight training facility was used as case study. In the case study, systems engineering methodology was adapted to the small airport/ renewable energy domain in order to effectively identify stakeholders and elicit user requirements. These, coupled with industrial standards, relevant government regulations, and a priori constraints, are used to derive the initial requirements that serve as the basis for a preliminary design. The proposed framework also contains provisions for an on-site assessment of existing airport energy needs, sources, providers, and location-specific assets and challenges.

scholarly journals Development of electricity industry on the basis of the use of the renewable energy sources in the regional energy security system

2021 ◽  
Vol 250 ◽  
pp. 04004
Author(s):  
Natalya Novikova ◽  
Olesya Kharitonenko
Keyword(s):  
Renewable Energy ◽  
Energy Security ◽  
Renewable Energy Sources ◽  
Electricity Industry ◽  
Green Economy ◽  
Energy Deficit ◽  
Energy Sources ◽  
Security Level ◽  
Regional Energy ◽  
The Republic

In the article presented, the authors prove the objective need for the development of the electricity industry of the Republic of Crimea on the basis of the active use of the renewable energy sources, caused by the world processes of the formation of the “green” economy. The object of the study is the territory of the Republic of Crimea - a bright representative of the energy deficit region. The development of the electricity industry of the Republic of Crimea on the basis of the use of the renewable energy sources serves as the basis for ensuring regional energy security, the fragility of which was determined by the political events of 2015. The authors studied the research papers of leading domestic and foreign scientists devoted to the analysis of the renewable energy sources in order to justify the further active development of a wind energy, a solar energy as well as bioenergy and landfill gas energy in the Republic of Crimea. The development of the Republic of Crimea’s electricity industry through the use of the renewable energy sources and local fuels is an essential area of modern active regional policy. It is determined by the fact that this direction, firstly, is considered as environmentally friendly generation, and secondly, contributes to a qualitative increase in regional energy security level.

scholarly journals Solar Photovoltaic System in India: Challenges and Barriers

2021 ◽  
Vol 9 (VI) ◽  
pp. 1060-1063
Author(s):  
Pushpendra Arya
Keyword(s):  
Renewable Energy ◽  
Solar Energy ◽  
Energy Systems ◽  
Clean Energy ◽  
Photovoltaic System ◽  
Energy Sources ◽  
Solar Photovoltaic ◽  
Indian Government ◽  
Solar Photovoltaic System ◽  
Main Component

In today’s world we are going towards the major share of renewable energy to reduce the effect Green House Gases (GHG) in the atmosphere. The limitation of energy sources which produces clean energy, the rise in the pollution in the environment, and programs initiated by the Indian Government have encouraged lots of open field researches on Solar Photovoltaic Systems or Solar Energy Systems. As producing the clean and renewable energy is main component of energy sector, solar photovoltaic could be considered as an alternative in various regions. Although Solar Photovoltaic does have different advantages and can be used for various purposes, but also there are several challenges for it. This paper took a whole overview of the advantages and uses of Solar Photovoltaic and barriers in their adaptation/opportunities.

scholarly journals Study of a Clean Microgrid for the Japanese Antarctica Showa Base

2020 ◽  
Vol 160 ◽  
pp. 01001
Author(s):  
F Shoki ◽  
S Obara
Keyword(s):  
Carbon Dioxide ◽  
Power Generation ◽  
Renewable Energy ◽  
Fossil Fuel ◽  
Energy Systems ◽  
Clean Energy ◽  
Power Generators ◽  
Power Failure ◽  
Heat Demand ◽  
Wind Power Generators

The Antarctica Showa Base has been powered primarily by diesel power generation. However, heavy oil fossil fuel is used for power generation by diesel generators. The Showa base is located in Antarctica, so there is heat demand throughout the year. Therefore, the capacity of transportation of fuel and emissions of carbon dioxide has become an issue. For these reasons, the construction of clean energy systems using renewable energy in order to locally produce energy for local consumption is being planned. In this study, we will design a microgrid based on the introduction of renewable energy (photovoltaics generation and wind power generators) and solid oxide fuel cell (SOFC), which does not emit carbon dioxide during power generation and can use heat cascades. However, there is a risk of a power failure because the power quality decreases with the introduction of renewable energy. In this paper, we clarified the introduction rate of renewable energy with the lowest frequency fluctuation and clarified the introduction limit of renewable energy in summer and winter.

NEXUS BETWEEN ENERGY EFFICIENCY, ENERGY SECURITY AND ECONOMIC DEVELOPMENT: EMPIRICAL EVIDENCE FROM BRICS ECONOMIES

2021 ◽  
pp. 1-25
Author(s):  
CHING-CHI HSU ◽  
FENGSHENG CHIEN ◽  
QUANG-THANH NGO ◽  
TIEN-DUNG NGUYEN ◽  
HIEU MINH VU ◽  
...  
Keyword(s):  
South Africa ◽  
Energy Efficiency ◽  
Economic Development ◽  
Renewable Energy ◽  
Energy Security ◽  
Policy Design ◽  
Clean Energy ◽  
Least Square ◽  
Risk Area ◽  
High Risk Area

The objective of this study is to measure the energy efficiency and energy security by using Data Envelopment Analysis (DEA) and an econometric estimation such as ordinary least square method (OLS) to measure the relationship between energy efficiency, energy security and economic development with macro-economic indicators such as energy consumption, economic growth, and environmental degradation factors by using the data from 1976 to 2016 while the energy efficiency has been measured during the period of 2010 to 2018. Results show that Brazil and Russia are countries with less energy for these consecutive years. This work contributes to the existing literature on eco-friendly and sustainable policy design in BRICS countries based on multiple indicators. The analysis also indicates that the quality of a country’s laws and regulations are essential for expanding research on renewable energy because the right policy tools serve as the basis for the transition. It is also found that Brazil, Russia, and South Africa have the best score in terms of energy and economic development while China and India are among the lowest performing countries in clean energy. Energy efficiency results show that china has the highest score of 1 while India and South Africa energy score is about 0.623 and 0.64 respectively. This serves as a panacea to study the country’s energy insecurity and bridge the gap in the literature. As the renewable energy industry is considered a high-risk area, it is necessary to develop essential aversion tools for financial policy risks to attract private capital.

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