scholarly journals The multi-state reliability model of a wind turbine

2019 ◽  
Vol 28 ◽  
pp. 01050
Author(s):  
Agata Orłowska
Keyword(s):  
Renewable Energy ◽  
Distributed Generation ◽  
Electricity Generation ◽  
Renewable Energy Sources ◽  
Reliability Model ◽  
Reliability Models ◽  
Res Integration ◽  
Renewable Energy Generation ◽  
Generation Unit ◽  
Generation Technology

In coming years it is expected the gradual decarbonisation of the electricity generation sector and its diversification − also in terms of renewable energy sources (RES). One of the aspects of the RES integration is the issue of availability and reliability of their work. Each distributed generation technology has its own specificity of work, which should be reflected in reliability models. In the article, the calculation example concerning the multi-state reliability model of a renewable energy generation unit is presented.

scholarly journals Real Time Monitoring of Salinity Gradient and Solar Pond Temperatures

2020 ◽  
Vol 331 ◽  
pp. 03005
Author(s):  
Zaenab Muslimin ◽  
Agus Siswanto ◽  
Indar Chaerah Gunadin ◽  
Muhammad Anshar
Keyword(s):  
Renewable Energy ◽  
Energy Policy ◽  
Electricity Generation ◽  
Alternative Energy ◽  
Renewable Energy Sources ◽  
Electrical Energy ◽  
Solar Ponds ◽  
Solar Pond ◽  
National Energy Policy ◽  
Generation Technology

Electric energy is an important factor for human needs, functions as lighting, and various human activities. The large amount of electrical energy needs demands to create various alternative electrical energy. Alternative energy uses renewable energy sources to avoid crisis and energy scarcity. The National Energy Policy (KEN) has encouraged the government and the private sector and the public to use energy effectively and efficiently, and to utilize renewable energy. The direction of national energy policy includes reducing dependence on fossil fuels, specifically petroleum. Utilization of renewable energy is needed for the sustainability of national energy supply and reserves. Indonesia is called a maritime country, because 2/3 of Indonesia’s territory is the sea with the longest coastline in the world, which is ± 80,791. 42 Km and is also called an archipelagic country because it has thousands of islands. This natural situation is a great potential for the development of renewable energy, especially the energy sourced from the sea spread wide and very abundant, namely solar pond. One of the alternative sources of renewable energy sourced from the sea currently not developed in Indonesia is solar ponds, even though Indonesia has a huge geographical potential to develop this technology. There are at least two potential parameters for building a solar pond, first because Indonesia has a tropical climate with a large enough intensity of sun, second because Indonesia is a maritime country surrounded by sea, so the availability of raw water is very abundant. Solar pond is not a new power generation technology. In the history of electricity generation technology in Indonesia, this technology has never been tested and implemented at all. In this study, it has a long-term goal of generating electricity from solar ponds. Solar pond technology is a type of environmentally friendly power plant, based on seawater using sunlight to get the difference in heat in the solar pool so that the thermal layer can be converted into electrical energy. The specific targets, namely data salinity and temperature data on the prototype solar pond have been realized in the form of cylindrical with a height of 1. 05m and a diameter of 0. 8 meters. Solar pool research, in line with the goal of national transformation as a significant contributor to the benefit of the Indonesian Maritime Continent. In line with the development of electricity generation technology, solar pond technology has never been implemented in Indonesia, so this research is in accordance with the 2016-2020 National Strategic Plan number 51868 / UN4. 1 / PR. 04 / 2016.

Modelling of an Optimized Microgrid Model by Integrating DG Distributed Generation Sources to IEEE 13 Bus System

2021 ◽  
Vol 5 (2) ◽  
pp. 18-25
Author(s):  
Bisma Imtiaz ◽  
Imran Zafar ◽  
Cui Yuanhui
Keyword(s):  
Renewable Energy ◽  
Distributed Generation ◽  
Energy Demand ◽  
High Reliability ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Efficient Manner ◽  
Matlab Simulink ◽  
Control Scheme ◽  
Power Quality Improvement

Due to the rapid increase in energy demand with depleting conventional sources, the world’s interest is moving towards renewable energy sources. Microgrid provides easy and reliable integration of distributed generation (DG) units based on renewable energy sources to the grid. The DG’s are usually integrated to microgrid through inverters. For a reliable operation of microgrid, it must have to operate in grid connected as well as isolated mode. Due to sudden mode change, performance of the DG inverter system will be compromised. Design and simulation of an optimized microgrid model in MATLAB/Simulink is presented in this work. The goal of the designed model is to integrate the inverter-interfaced DG’s to the microgrid in an efficient manner. The IEEE 13 bus test feeder has been converted to a microgrid by integration of DG’s including diesel engine generator, photovoltaic (PV) block and battery. The main feature of the designed MG model is its optimization in both operated modes to ensure the high reliability. For reliable interconnection of designed MG model to the power grid, a control scheme for DG inverter system based on PI controllers and DQ-PLL (phase-locked loop) has been designed. This designed scheme provides constant voltage in isolated mode and constant currents in grid connected mode. For power quality improvement, the regulation of harmonic current insertion has been performed using LCL filter. The performance of the designed MG model has been evaluated from the simulation results in MATLAB/ Simulink.

scholarly journals Assessment of on-site steady electricity generation from renewable energy sources in Chile

2019 ◽  
Vol 158 ◽  
pp. 1099-1104
Author(s):  
Luis Ramirez Camargo ◽  
Javier Valdes ◽  
Yunesky Masip Macia ◽  
Wolfgang Dorner
Keyword(s):  
Renewable Energy ◽  
Electricity Generation ◽  
Renewable Energy Sources ◽  
Energy Sources

scholarly journals Croatia's rural areas - renewable energy based electricity generation for isolated grids

2014 ◽  
Vol 18 (3) ◽  
pp. 731-742 ◽  
Author(s):  
Sonja Protic ◽  
Robert Pasicko
Keyword(s):  
Renewable Energy ◽  
Rural Areas ◽  
Electricity Generation ◽  
Renewable Energy Sources ◽  
Interdisciplinary Approach ◽  
Energy Sources ◽  
Electricity Grid ◽  
The Public ◽  
Balkan States ◽  
Supply Systems

Several Western Balkan states face the consequences of the Yugoslavian war, which left hometowns with dilapidated electricity grid connections, a high average age of power plant capacities and low integration of renewable energy sources, grid bottlenecks and a lack of competition. In order to supply all households with electricity, UNDP Croatia did a research on decentralized supply systems based on renewable energy sources. Decentralized supply systems offer cheaper electricity connections and provide faster support to rural development. This paper proposes a developed methodology to financially compare isolated grid solutions that primarily use renewable energies to an extension of the public electricity network to small regions in Croatia. Isolated grid supply proves to be very often a preferable option. Furthermore, it points out the lack of a reliable evaluation of non-monetizable aspects and promotes a new interdisciplinary approach.

scholarly journals Development of a Micro grid with Renewable Energy Sources with Feedback Controller

2019 ◽  
Vol 8 (11) ◽  
pp. 2014-2018
Keyword(s):  
Renewable Energy ◽  
Electricity Generation ◽  
Low Cost ◽  
Renewable Energy Sources ◽  
Electrical Power ◽  
Energy Sources ◽  
Military Operations ◽  
Urban Centers ◽  
Industrial Projects ◽  
Micro Grid

To make micro grid with renewable energy and to over come the technical challenges and economy base and policy and regulatory challenges . From the natural wastage we can generate the Electricity. Thus, the Electrical Power or Electricity is available with a low cost and pollution free to anyplace in the world at all times. This process divulge a unequaled step in electricity generation and this type of generation is maintain the ecological balance. We can have an uninterrupted power supply irrespective of the natural condition without any kind of environmental pollution. More influence this process relent the less production cost for electricity generation. Micro grids have long been used in remote areas to power off-grid villages, military operations or industrial projects. But increasingly they are being used in cities or towns, in urban centers. Here we try a proto type of micro grid with renewable energy sources.

scholarly journals FUEL CELLS VS. RENEWABLE ENERGY SOURCES AS DISTRIBUTED GENERATION

2015 ◽  
Vol 38 (1) ◽  
pp. 9-13
Author(s):  
H.A. Khattab ◽  
M.F Awad-alla ◽  
S.M Allam ◽  
S.M farrag
Keyword(s):  
Renewable Energy ◽  
Fuel Cells ◽  
Distributed Generation ◽  
Renewable Energy Sources ◽  
Energy Sources

scholarly journals A Review on DC Microgrid and Decentralized Approach

2021 ◽  
Vol 9 (8) ◽  
pp. 1719--1723
Author(s):  
Mahesh Abdare
Keyword(s):  
Renewable Energy ◽  
Distribution System ◽  
Renewable Energy Sources ◽  
Energy Generation ◽  
Energy Sources ◽  
Dc Microgrid ◽  
Renewable Energy Generation ◽  
The Given ◽  
Day By Day

Abstract: DC Microgrid is going to be a very important part of the Distribution system soon. The given circumstances have forced us to find how to utilize renewable energy sources in the integration to increase its reliability in our day-to-day life. This paper gives a good idea of the DC Microgrid and various methods being used for the controlling part of it. As day by day cost incurred in renewable energy generation is decreasing, we need to find out significant parts where this kind of DC Microgrid can be utilized to provide electricity in all parts of the country. Keywords: DGUs, ImGs, DMA, OXD, DC Microgrid.

The Forecasting of Renewable Energy Generation for Turkey by Artificial Neural Networks and a Auto-Regressive Integrated Moving-Average Model -2023 Generation Targets by Renewable Energy Resources

2021 ◽  
Author(s):  
özlem karadag albayrak
Keyword(s):  
Neural Networks ◽  
Artificial Neural Networks ◽  
Renewable Energy ◽  
Moving Average ◽  
Renewable Energy Sources ◽  
Energy Generation ◽  
Energy Sources ◽  
Ann Model ◽  
Artificial Neural ◽  
Renewable Energy Generation

Abstract Turkey attaches particular importance to energy generation by renewable energy sources in order to remove negative economic, environmental and social effects caused by fossil resources in energy generation. Renewable energy sources are domestic and do not have any negative effect, such as external dependence in energy and greenhouse gas, caused by fossil resources and which constitute a threat for sustainable economic development. In this respect, the prediction of energy amount to be generated by Renewable Energy (RES) is highly important for Turkey. In this study, a generation forecasting was carried out by Artificial Neural Networks (ANN) and Autoregressive Integrated Moving Average (ARIMA) methods by utilising the renewable energy generation data between 1965-2019. While it was predicted by ANN that 127.516 TWh energy would be generated in 2023, this amount was estimated to be 45.457 TeraWatt Hour (TWh) by ARIMA (1.1.6) model. The Mean Absolute Percentage Error (MAPE) was calculated in order to specify the error margin of the forecasting models. This value was determined to be 13.1% by ANN model and 21.9% by ARIMA model. These results suggested that the ANN model provided a more accurate result. It is considered that the conclusions achieved in this study will be useful in energy planning and management.

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