scholarly journals Evaluation of small hydropower plant at Ribb irrigation dam in Amhara regional state, Ethiopia

2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Addisu Worku Bezabih
Keyword(s):  
Power Plants ◽  
Hydroelectric Plant ◽  
Hydropower Plant ◽  
Hydroelectric Power ◽  
Small Hydropower ◽  
Study Region ◽  
Promising Alternative ◽  
Main Requirement ◽  
Energy Needs ◽  
Hydroelectric Plants

Abstract Background Energy is the main requirement for economic growth in any country and supports the modern economy. The energy sector is considered a vital element in developing countries because it meets energy needs. This article addresses the production of electricity using small hydroelectric power plants for rural applications. The main objective of this study was to assess the potential of the Ribb dam for small hydroelectric plants. The flow is very important for the production of hydroelectricity as the height of a proposed site is constant and the available flow is very variable. Result The flow duration curve is constant and it will vary from 20 to 50% from the nominal flow. Further, it will decrease when the percentage of the nominal flow increases. The best size of a small hydroelectric plant producing a maximum of electricity in the context of future projected flows in the study region. Further, the Ribb dam concluded that the average flow of 14.6331 m3/s, the smooth head of 70.37 m, and the average nominal power of 5.53 MW. Conclusion Small hydro system (SHP) is a promising alternative for the production of cheap and renewable energy in rural or developing areas.

scholarly journals Evaluation of Small Hydropower Plant at Ribb Irrigation Dam in Amhara Regional State, Ethiopia

2020 ◽  
Author(s):  
ADDISU WORKU BEZABIH
Keyword(s):  
Power Plants ◽  
Hydroelectric Plant ◽  
Hydropower Plant ◽  
Optimal Size ◽  
Hydroelectric Power ◽  
Small Hydropower ◽  
Study Region ◽  
Promising Alternative ◽  
Main Requirement ◽  
Energy Needs

Abstract Background: Energy is the main requirement for economic growth in any country and also supports the modern economy. The energy sector is considered a vital element in developing countries because it meets energy needs. This article deals with the production of electricity using small hydroelectric power plants for rural applications. The main objective of this study was to assess the potential of the Ribb dam for small hydroelectric plants. Since the height of a proposed site is constant while the available flow is very variable, the flow is very important for the production of hydroelectricity. Result: The flow duration curve is constant from 20% to 50% of the nominal flow, and then decreases as the percentage of the nominal flow increases. The Ribb dam concluded that the average flow of 14.6331m3/s, the smooth head of 70.37 m, and the average nominal power of 5.53 MW would be the most optimal size of a small hydroelectric plant producing a maximum of electricity in the context of future projected flows in the study region. Conclusion: SHP is a promising alternative for the production of cheap and renewable energy in rural or developing areas.

Engineering Solutions to the Greenhouse Gases Generated by Hydroelectric Plants

2014 ◽  
Vol 136 (2) ◽  
Author(s):  
Kaufui Vincent Wong
Keyword(s):  
Power Plants ◽  
Mechanical Design ◽  
Hydroelectric Plant ◽  
Hydroelectric Power ◽  
Current Review ◽  
Hydroelectric Power Plants ◽  
Water Turbine ◽  
Hydroelectric Plants ◽  
The Right ◽  
Do The Right Thing

There is a controversy brewing for about 10 years that hydroelectric power plants are not a clean, renewable source of electricity. The current review indicates that the source of methane is not in the mechanics or mechanical design of the equipment used. The source of the methane is from nature, and man's failure to do the right thing. This methane may be reduced or completely eliminated. If this cannot be accomplished or if it is too expensive to retrofit the hydroelectric plant, then the deep water may be preprocessed (and the methane collected) before being used in the water turbine. Several methods have been introduced and discussed. Details have been omitted so that practicing engineers and other professionals can obtain funds to research and develop or invent the practical solutions suited to conditions local to the problem.

scholarly journals Availability Projections of Hydroelectric Power Plants through Monte Carlo Simulation

Energies ◽  
2021 ◽  
Vol 14 (24) ◽  
pp. 8398
Author(s):  
Marcos Tadeu Barros de Oliveira ◽  
Patrícia de Sousa Oliveira Silva ◽  
Elisa Oliveira ◽  
André Luís Marques Marcato ◽  
Giovani Santiago Junqueira
Keyword(s):  
Monte Carlo Simulation ◽  
Monte Carlo ◽  
Power Plants ◽  
Hydroelectric Plant ◽  
Real Data ◽  
Hydroelectric Power ◽  
Maintenance Schedule ◽  
Hydroelectric Power Plants ◽  
Hydroelectric Plants ◽  
The Impact

The present work proposes a Monte Carlo Simulation (MCS) to obtain availability projections for Hydroelectric Power Plants (HPP), based mainly on regulatory aspects involving the Availability Factor (AFA). The main purpose of the simulation is to generate scenarios to obtain statistics for risk analysis and decision-making in relation to the HPP. The proposed methodology consists of two steps, firstly, the optimization of the maintenance schedule of the hydroelectric plant is carried out, in order to allocate the mandatory maintenance in the simulation horizon. Then, for the MCS, scenarios of forced shutdowns of the Generating Units (GU) will be generated, which directly influence the operation and, consequently, the availability of the HPP. The scenarios will be inserted into an operation optimization model, which considers the impact of forced shutdown samples on the MCS. The proposed modeling was applied using real data from the Santo Antônio HPP, which is one of the largest hydroelectric plants in Brazil.

scholarly journals Development of a Hydropower Turbine Using Seawater from a Fish Farm

Processes ◽  
2021 ◽  
Vol 9 (2) ◽  
pp. 266
Author(s):  
Md Rakibuzzaman ◽  
Sang-Ho Suh ◽  
Hyoung-Ho Kim ◽  
Youngtae Ryu ◽  
Kyung Yup Kim
Keyword(s):  
Power Plants ◽  
Guide Vane ◽  
Cross Flow ◽  
Synchronous Generator ◽  
Fish Farm ◽  
Hydropower Plant ◽  
Fish Farms ◽  
Data Simulation ◽  
Small Hydropower ◽  
Hydropower Plants

Discharge water from fish farms is a clean, renewable, and abundant energy source that has been used to obtain renewable energy via small hydropower plants. Small hydropower plants may be installed at offshore fish farms where suitable water is obtained throughout the year. It is necessary to meet the challenges of developing small hydropower systems, including sustainability and turbine efficiency. The main objective of this study was to investigate the possibility of constructing a small hydropower plant and develop 100 kW class propeller-type turbines in a fish farm with a permanent magnet synchronous generator (PMSG). The turbine was optimized using a computer simulation, and an experiment was conducted to obtain performance data. Simulation results were then validated with experimental results. Results revealed that streamlining the designed shape of the guide vane reduced the flow separation and improved the efficiency of the turbine. Optimizing the shape of the runner vane decreased the flow rate, reducing the water power and increasing the efficiency by about 5.57%. Also, results revealed that tubular or cross-flow turbines could be suitable for use in fish farm power plants, and the generator used should be waterproofed to avoid exposure to seawater.

Project Risk Management in Hydropower Plant Projects

2011 ◽  
Vol 3 (2) ◽  
pp. 171-186 ◽  
Author(s):  
Weddy Bernadi Sudirman ◽  
Sarwono Hardjomuljadi
Keyword(s):  
Risk Management ◽  
Time Delays ◽  
Power Plants ◽  
Hydroelectric Power Plant ◽  
Hydropower Plant ◽  
Hydroelectric Power ◽  
Project Risk ◽  
Cost Overruns ◽  
Installed Capacity ◽  
Hydropower Construction

The development of hydroelectric power plant is one of the efforts in utilising water resources for people’s welfare by generating the energy for electricity purpose. Nowadays, the installed capacity of hydro electric power plants is 3,529 MW from the total installed capacity 24,846 MW from various power plants owned by PT PLN (Persero) and the hydropower potential 75,000 MW all over Indonesia. Hydroelectric power plant has complex structures and involves large amounts of capital with a long-running construction period. This situation imposes uncertainty factors with considerably high risks. The construction phase is identified as a critical phase in hydropower projects where many unforeseen factors occur. Failure to manage project risks leads to significant problems for the client such as completion time delays and cost overruns. In order to prevent time delays and cost overruns in hydropower construction in PT PLN (Persero), the study on project risk management in the construction stage of hydropower plant projects had been conducted. The purpose of this study was to identify and measure the importance of construction risks and to determine the level of agreement or disagreement between the client, consultants and contractors on the ranking of construction risk in hydropower projects. The author selected the respondents from the clients, consultants and contractors’ personnel who had work experience in hydropower construction projects in PT PLN (Persero). JEL Classification: L74—Construction

Regulation and Energy Policy, Hydropower Plant Upgrading, and Environment

1994 ◽  
Vol 5 (2) ◽  
pp. 149-158
Author(s):  
Javier Escudero
Keyword(s):  
Energy Policy ◽  
Power Plants ◽  
Hydropower Plant ◽  
Hydroelectric Power ◽  
Size Discrimination ◽  
Hydroelectric Power Plants ◽  
Generation Capacity ◽  
Reduction Of Emissions

Improvements in existing hydroelectric power plants can increase quantity of production, but very often they are also designed to improve its quality, that is, peak generation capacity and availability of reserve energy, which in turn leads to a reduction of emissions in the producer part. An adequate valuation and economic recognition of the energy quality in remuneration seems essential to encourage these improvements. Frequent size discrimination acts against this recognition, because quality of energy is more often present in conventional-sized installations.

scholarly journals Usaquén small hydropower plant - successful case

2018 ◽  
Vol 1 (2) ◽  
pp. 293-303
Author(s):  
Diego Fernando Rodríguez-Galán ◽  
Andrés Escobar-Díaz
Keyword(s):  
Power Plant ◽  
Hydroelectric Power Plant ◽  
Environmental Problems ◽  
Hydropower Plant ◽  
Hydroelectric Power ◽  
Small Hydropower ◽  
Engineering Project ◽  
Business Context ◽  
Successful Case ◽  
The City

In this study a presentation is made of the Small Hydroelectric Power Plant (PCH) located in Usaquén (Bogota), the work is based on an engineering project carried out by the Aqueduct and Sewer Company of Bogotá (EAAB). It is addressed first of all the environmental problems considered in this project and the business context that propitiates it, taking into account the technical background of the operation of the aqueduct system of the city. In second instance, the technical generalities and the scopes that were estimated in the formulation of the project are exposed to finally contrast them with the results obtained after five years of operation of the project.

scholarly journals Photovoltaic Solar Energy: The Brazilian Reality

2019 ◽  
Vol 2 (3) ◽  
Keyword(s):  
Solar Energy ◽  
Power Plants ◽  
Energy Resources ◽  
Solar Photovoltaic ◽  
Hydroelectric Power ◽  
Renewable Energy Resources ◽  
Photovoltaic Generation ◽  
Thermoelectric Power Plants ◽  
Hydroelectric Plants ◽  
Photovoltaic Solar Energy

The searching for diversification of energy resources in Brazil has become extremely necessary due to two main factors. The first one is the current hydric situation in which the country is passing through; with the scarcity of rain, the generation situation through hydroelectric power plants is being compromised. Since the significant reduction in rainfall, power generation by hydroelectric plants has not been sufficient to supply the demand. Consequently, the need to use thermoelectric power plants has increased the energy price. Secondly, secondly, the explorations of renewable energy resources bring flexibility and sustainability. In this scenario, photovoltaic solar energy presents itself as a technology in constant advance in Brazil and around the world. Through a bibliographical review, this article aims to present the principle of the use of this energy, considering the equipment and materials applied to the system, as well as the efficiency they can achieve. In addition, there is a broader view of the use of sunlight to produce electricity through photovoltaic panels and the applications of this technology in specific situations, such as installation on streetlights. The use of photovoltaic energy is a reality that states increasingly in several countries. In Brazil the manufacturing of photovoltaic systems need to reach an industrial scale to reduce costs, technical conditions and the uncertainty of the extent that this market will reach in the coming years also bring difficulties to final consolidation of solar photovoltaic generation in Brazil. There are several uses for a system that generates electricity

scholarly journals Extended Isolation Forests for Fault Detection in Small Hydroelectric Plants

2020 ◽  
Vol 12 (16) ◽  
pp. 6421
Author(s):  
Rodrigo Barbosa de Santis ◽  
Marcelo Azevedo Costa
Keyword(s):  
Fault Detection ◽  
Anomaly Detection ◽  
Hydroelectric Plant ◽  
Clean Energy ◽  
Hydroelectric Power ◽  
Suitable Candidate ◽  
Hydroelectric Plants ◽  
One Year ◽  
Isolation Forest ◽  
Hydroelectric Power Generation

Maintenance in small hydroelectric plants is fundamental for guaranteeing the expansion of clean energy sources and supplying the energy estimated to be necessary for the coming years. Most fault diagnosis models for hydroelectric generating units, proposed so far, are based on the distance between the normal operating profile and newly observed values. The extended isolation forest model is a model, based on binary trees, that has been gaining prominence in anomaly detection applications. However, no study so far has reported the application of the algorithm in the context of hydroelectric power generation. We compared this model with the PCA and KICA-PCA models, using one-year operating data in a small hydroelectric plant with time-series anomaly detection metrics. The algorithm showed satisfactory results with less variance than the others; therefore, it is a suitable candidate for online fault detection applications in the sector.

PROSPECTS FOR COMBINING SOLAR PLANTS WITH STRUCTURAL ELEMENTS OF ENVIRONMENTAL HYDRAULIC FACILITIES AND COMPLEXES

2021 ◽  
pp. 57-65
Author(s):  
O. N. CHERNYH ◽  
◽  
A. V. BURLACHENKO ◽  
V. V. VOLSHANIK
Keyword(s):  
Power Plants ◽  
Hydroelectric Power Station ◽  
Hydroelectric Power ◽  
Structural Elements ◽  
Power Station ◽  
Optimal Arrangement ◽  
Turbine Wheel ◽  
The North ◽  
Energy Needs ◽  
Dam Building

The issues of solving modern problems related to meeting the energy needs of environmental hydraulic engineering are considered. The problem of improving the methodological basis for choosing the optimal arrangement of elements of photovoltaic devices (SPEU) on the blocks of the dam building of hydroelectric power plants (HPP) of 4 main types is formulated. The graphical dependences of the estimation of the power ratio of the combined SPEU and HPP on the diameter of the turbine wheel are analyzed. As a result of the analysis of the influence of the location of the transformer on the possibility of placing the SPEU on the buildings of the hydroelectric power station, it was revealed that in order to increase the adaptability of the revitalized even large hydro system with a separate building of the hydroelectric power station, it is preferable to place power transformers from the downstream side. It is noted that according to the results of the schematic study for the medium-pressure hydroelectric complex Lagdo in the north of Cameroon, the placement of solar cells will provide an additional 6.95% of the capacity of the operating hydroelectric power station.

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