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.

Hybrid Distributed Power Generation for an Isolated Rural Settlement in Masirah Island, Oman

2011 ◽  
Author(s):  
Saleh Al Saadi ◽  
Moncef Krarti
Keyword(s):  
Power Systems ◽  
Residential Buildings ◽  
Renewable Energy Sources ◽  
Electrical Energy ◽  
Small Community ◽  
Solar Pv ◽  
Cost Of Energy ◽  
Storage Batteries ◽  
Electrical Generation ◽  
The Cost

This paper summarizes the findings from a feasibility study of using renewable energy sources in combination with conventional power systems to meet the electrical requirements for an isolated island of Masirah in Oman. The study has been conducted to determine the best hybrid system to generate electrical energy needed for a small community of 500 residential buildings. A series of a simulation analyses have been carried out to evaluate and optimize different distribution technologies including photovolatics, wind and diesel for electrical generation in combination with storage batteries. It was found that the cost of energy could be reduced by as much as 48% compared to the cost for the baseline generation system currently used in the Masirah Island (i.e. diesel-driven generators). In particular, it was found that wind turbines in combination with storage batteries have a great impact in reducing the cost of generating electrical energy for the residential community. Moreover, solar PV panels were found unattractive under the current diesel price rates but could potentially become viable if the diesel prices increase. The paper outlines an optimal design for generating electricity for the community at lowest cost while minimizing carbon emissions.

scholarly journals Development of a power transformer model for high-frequency transient phenomena

2021 ◽  
Vol 19 ◽  
pp. 217-221
Author(s):  
L. Braña ◽  
◽  
A. Costa ◽  
R. Lopes
Keyword(s):  
Transmission Lines ◽  
Power Transformer ◽  
Renewable Energy Sources ◽  
Electrical Energy ◽  
Energy System ◽  
Operating Conditions ◽  
Critical Element ◽  
Electrical Networks ◽  
Transient Phenomena ◽  
Transformer Model

In recent years, the proliferation of distributed renewable energy sources and the application of new rules for the exploitation of electrical networks imposed by the markets have dictated increasingly demanding operating conditions for electric power transformers, creating new challenges in their exploration and conservation. Transformers that, in addition to the transmission lines, are certainly the most important and critical element of any electrical energy system. Adequate models are necessary to accurately describe transformer behavior and internal response when submitted to different external requests imposed by the network, particularly during transient phenomena, as well as, to properly assess system vulnerabilities and network optimization. This effort is being carried out today by several research groups in the world, namely from Cigré and IEEE. In this work, a transformer model to be integrated into a timedomain equivalent circuit is developed and discussed. Results obtained with this model are compared with measurements obtained by the Cigré JWG A2/C4.52 in a power transformer used as a reference for the working group.

scholarly journals Design of an Emergency Energy System for a City Assisted by Renewable Energy, Case Study: Latakia, Syria

Energies ◽  
2018 ◽  
Vol 11 (11) ◽  
pp. 3138 ◽  
Author(s):  
Ghaeth Fandi ◽  
Vladimír Krepl ◽  
Ibrahim Ahmad ◽  
Famous Igbinovia ◽  
Tatiana Ivanova ◽  
...  
Keyword(s):  
Developing Countries ◽  
Renewable Energy ◽  
Transmission Lines ◽  
Urban Areas ◽  
Renewable Energy Sources ◽  
Electrical Energy ◽  
Energy System ◽  
Developed Countries ◽  
High Energy ◽  
Energy Sources

Electrical energy is one of the most important daily needs. Shortage of energy can be very dangerous for any society. This can affect the standard of living and quality of life of the people and even endanger the lives of those in hospitals, and so forth. Developed countries do not face such risks in general because they have well organized electrical systems and high energy security. The developing countries are faced daily with electric system collapses, especially in the case of wars, where many parts of the electrical grid in the country can be damaged and fuel transmission lines for generators cut off. Urban areas in developing countries should have a strategic plan to deal with any unexpected occurrence of energy shortages using any available renewable energy sources. City of Latakia is located in the region which has been suffering from the consequences of war for more than six years. The fact that a high number of migrants from other cities have come to Latakia along with a lack of fuel makes the energy shortage in the city worse. An emergency system could use the cheapest available renewable energy sources in addition to few big portable generators to provide an acceptable energy supply for the most needed requirements of daily life.

scholarly journals Assessment of Hybrid Energy Sources

2019 ◽  
Vol 9 (2) ◽  
pp. 4715-4720
Keyword(s):  
Renewable Energy ◽  
Power Supply ◽  
Renewable Energy Sources ◽  
Energy System ◽  
Energy Sources ◽  
Solar Pv ◽  
Hybrid Energy ◽  
Remote Locations ◽  
Using Data ◽  
Hybrid Renewable Energy

This paper comprises exploration of hybrid renewable energy sources (RES) such as solar PV, wind Energy etc. with respect to solar radiation and velocity of wind. Hybrid energy system is a magnificent option for providing power supply to remote locations where grid supply is not reachable. The renewable energy sources (RES) are integrated through DSP with proper programming such that maximum power is fetched through RES. Variations in the output power of solar and wind is analyzed using data obtained through proper integration of RES. The foremost objective of proposed paper is to provide uninterrupted power supply to demand side with scrutiny of hybrid energy sources.

scholarly journals Optimizing the power quality by reducing harmonic distortion in the power supply network for isolated territories

2021 ◽  
Vol 2061 (1) ◽  
pp. 012034
Author(s):  
K Suslov ◽  
N Solonina ◽  
Z Solonina ◽  
A Akhmetshin
Keyword(s):  
Power Systems ◽  
Power Supply ◽  
New Technologies ◽  
Supply Voltage ◽  
Renewable Energy Sources ◽  
Electrical Energy ◽  
Distributed Monitoring ◽  
Current Time ◽  
Harmonic Components

Abstract New technologies of electric power generation, such as generation based on renewable energy sources, distributed generation, make extensive use of modern power electronics. All these non-linear elements generate harmonic components in the supply voltage. This leads to a deterioration in the quality of the supplied energy. In this regard, improving the quality of supplied energy is an urgent task. The article proposes a method of continuous distributed monitoring of the quality of electrical energy in the isolated power systems. This method is based on the use of the PMU infrastructure to continuously obtain information on instantaneous values of currents and voltages. It is proposed to use a smart meter proposed earlier by the authors as a primary measuring instrument for monitoring the level and direction of harmonics in various sections of the power system. This procedure is carried out in the current time mode, and thus there is a continuous adjustment of the power supply system to a mode close to optimal in terms of the content of harmonic components (harmonics) in the supply voltage at the selected points of connection.

Switching to renewables: what will Russia gain?

foresight ◽  
2017 ◽  
Vol 19 (5) ◽  
pp. 528-540 ◽  
Author(s):  
Georgy V. Ermolenko ◽  
Liliana Proskuryakova ◽  
Boris V. Ermolenko
Keyword(s):  
Renewable Energy ◽  
Fossil Fuels ◽  
Renewable Energy Sources ◽  
Energy Resource ◽  
Electrical Energy ◽  
Low Grade ◽  
Solar Pv ◽  
Resource Saving ◽  
Content Type ◽  
Oil Fuel

Purpose The purpose of the study is to show the technical potentials of a variety of renewable energy sources in Russia, as well as benefits from their deployment including hydrocarbon savings, emission reduction and lower energy cost. Design/methodology/approach In the paper, Russia is compared with other countries in terms of actual installed capacity and its dynamics, actual and projected share of renewables in the energy mix. The authors offer calculations of the technical potentials (fuel, heat energy, electrical energy, resource saving and environmental) of renewables (solar PV, wind, biomass, geothermal, low-grade heat, small hydro), identify social and economic preconditions and key effects of their deployment. Findings The paper features calculations on the renewable energy technology potential, based on the data by Andreenko et al. (2015), authors' calculations and statistical data. This study proves that the cumulative technical potential of the renewables in Russia amounts to 133,935 million units of oil equivalent. This study also offers assessments of oil fuel, black coal and natural gas savings that may be achieved by replacing fossil fuels with renewables; assessments of avoided air pollution calculated as CO- and CO2-equivalents. Originality/value The paper fills in the gap of comprehensive assessments of renewable energy potentials in Russia and a variety of effects that their deployment may entail, based on a single integral methodology. The authors offer a new evaluation of existing and future renewable energy potentials, overcoming the methodological and data constraints faced by previous similar studies. The up-to-date, comprehensive and accurate data will help make the right investment and policy choices.

Smart Cities and Smart Regulation

2018 ◽  
Author(s):  
Anita Rønne
Keyword(s):  
Climate Change ◽  
Urban Areas ◽  
Fossil Fuels ◽  
System Analysis ◽  
New Technologies ◽  
Smart Cities ◽  
Renewable Energy Sources ◽  
Energy System ◽  
Political Agenda ◽  
Smart Regulation

Increasing focus on sustainable societies and ‘smart cities’ due to emphasis on mitigation of climate change is simultaneous with ‘smart regulation’ reaching the forefront of the political agenda. Consequently, the energy sector and its regulation are undergoing significant innovation and change. Energy innovations include transition from fossil fuels to more renewable energy sources and application of new computer technology, interactively matching production with consumer demand. Smart cities are growing and projects are being initiated for development of urban areas and energy systems. Analysis from ‘Smart Cities Accelerator’, developed under the EU Interreg funding programme that includes Climate-KIC,——provides background for the focus on a smart energy system. Analysis ensures the energy supply systems support the integration of renewables with the need for new technologies and investments. ‘Smart’ is trendy, but when becoming ‘smart’ leads to motivation that is an important step towards mitigating climate change.

Hybrid Photovoltaic-Diesel Energy System Optimization (Case Study of Electric Power Supply for Buildings under the Weather Conditions of Montenegro)

2014 ◽  
Vol 627 ◽  
pp. 357-364 ◽  
Author(s):  
Goran Radovic ◽  
Vera Murgul ◽  
Nikolai Vatin ◽  
Ekaterina Aronova
Keyword(s):  
Power Systems ◽  
Electric Power ◽  
Power Supply ◽  
Optimal Solution ◽  
Weather Conditions ◽  
System Optimization ◽  
Energy System ◽  
Energy Performance ◽  
Electric Power Supply ◽  
Continuous Power

The article deals with the concept of solar photovoltaic systems use in power supply systems. An analysis of local solar resources potential has been carried out, and optimal orientation points of radiant heat absorbing photovoltaic panels have been chosen to achieve maximum energy performance. Simulation of electric power systems having different configurations has been implemented using the software program Homer. It has been stated that a combination of solar and diesel energy systems is considered to be an optimal solution under the weather conditions of Montenegro. The systems working together make it possible to reduce maintenance costs significantly and adjust capacity generation schedule with due account for energy consumption features to a maximum extent. This allows generating electric power at less cost and results in a more reliable and continuous power supply without failures for a consumer chosen.

scholarly journals Analysis of Energy System in Norway with Focus on Energy Consumption Prediction

2017 ◽  
Vol 9 (1) ◽  
pp. 5-14 ◽  
Author(s):  
Maryam Hamlehdar ◽  
Alireza Aslani
Keyword(s):  
Energy Consumption ◽  
Energy Demand ◽  
Fossil Fuels ◽  
Renewable Energy Sources ◽  
Electricity Consumption ◽  
Energy System ◽  
High Energy ◽  
Regression Result ◽  
Industry Growth ◽  
The Status

Abstract Today, the fossil fuels have dominant share of energy supply in order to respond to the high energy demand in the world. Norway is one of the countries with rich sources of fossil fuels and renewable energy sources. The current work is to investigate on the status of energy demand in Norway. First, energy and electricity consumption in various sectors, including industrial, residential are calculated. Then, energy demand in Norway is forecasted by using available tools. After that, the relationship between energy consumption in Norway with Basic economics parameters such as GDP, population and industry growth rate has determined by using linear regression model. Finally, the regression result shows a low correlation between variables.

scholarly journals Experimental Studies on an Inclined Collector Divergent Chimney Pilot Plant

2021 ◽  
Vol 850 (1) ◽  
pp. 012008
Author(s):  
N Rajamurugu
Keyword(s):  
Renewable Energy ◽  
Fossil Fuels ◽  
Low Cost ◽  
Renewable Energy Sources ◽  
Experimental Studies ◽  
High Mass ◽  
Energy Sources ◽  
Solar Pv ◽  
Solar Chimney ◽  
Energy Agency

Abstract Renewable energy sources become suitable valid options to reduce the dependency on fossil fuels or petroleum products. The International Renewable Energy Agency reports that the world will harvest 40% of energy from renewable energy sources by 2030. Conventional technologies such as solar PV technology, consumes higher capital per unit (kWh) of electricity generation cost significantly higher than the traditional sources. Hence, solar chimney power generation system can be suitable option for generating low cost energy. Solar chimneys are developed and tested by different researchers in enhancing the performance of the system. Studies on the geometric modifications of the collector, and chimney are limited. The aim of this paper is to analyse the experimental data obtained from a divergent solar chimney. Experimentation is carried under sunlight in an open atmosphere. The airflow rates in the chimneys are tested under different collector outlet height. The experimental results showed that a chimney with higher collector openings was performed well than other models. The computational analysis is also carried out using ANSYS Fluent software package which shows that the collector opening of 2.5m is recommended for higher high mass flow rate and system efficiency.

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