scholarly journals Hydroelectric power plants for small rivers

2021 ◽  
Vol 2131 (3) ◽  
pp. 032071
Author(s):  
A A Devyatkin ◽  
S V Titov ◽  
V V Konovalov
Keyword(s):  
Power Plants ◽  
Flow Simulation ◽  
Hydroelectric Power Plant ◽  
Flow Speed ◽  
Small Rivers ◽  
Hydroelectric Power ◽  
Incident Flow ◽  
Hydroelectric Power Plants ◽  
Darrieus Rotor ◽  
Negative Factors

Abstract Comparative analysis of methods of obtaining electricity from a renewable energy source is carried out. Various designs and op-tions for small hydroelectric power plants have been proposed. Positive and negative factors of structures under consideration and their impact on the environment are analyzed. The main characteristics of the flow (speed, head) for the choice of the optimal variant of hydroelectric power plant have been determined. Three variants of impellers for free-flow hydroelectric power plants are proposed with a comparison of the efficien-cy of each variant. An analysis was carried out and an impeller based on a Darrieus rotor was selected for further research. Simulation was performed in the Flow Simulation program. The initial data for the design of Darrieus rotor operating in a liquid were the diameter and width of the impeller. The calculations involved a rotor with straight and swirling blades. The swirling blades rotor is self-starting. In the course of the calcula-tion, the speed of the liquid flow approaching the rotor and the rotor speed were changed. As a result of cal-culation, the value of the positive moment for self-starting was determined, which occurs at an incident flow velocity of at least 1.3 m/s.

scholarly journals Hydroelectric Power Plants ’ Re Servoirs And Their Impact On The Environment

2015 ◽  
Vol 1 ◽  
pp. 171 ◽  
Author(s):  
M. I. Balzannikov ◽  
E. G. Vyshkin
Keyword(s):  
Renewable Energy ◽  
Power Plant ◽  
Power Plants ◽  
Renewable Energy Sources ◽  
Hydroelectric Power Plant ◽  
Energy Sources ◽  
Hydroelectric Power ◽  
Hydroelectric Power Plants ◽  
Different Types ◽  
The Way

The paper presents the analysis of different types of impact the hydroelectric power plants’ reservoirs could make on the environment. Hydroelectric power plants (HPP) produce ecologically safe energy and correspond to the modern striving for sustainability because they are operated on renewable energy sources. At the same time they can provoke various potential dangers for the environment. The objective of the investigation is to demonstrate the interrelation between the type and structure of a hydroelectric power plant and the way its reservoir may impact on the nature surrounding the plant. These effects may be direct and indirect, positive and negative and vary from insignificant that can be easily fixed to those that are irreversible and catastrophic. The latter should be taken into account during the design of HPP.

scholarly journals SAVING RESOURCES IN THE CONSTRUCTION OF HYDROELECTRIC POWER PLANTS

2019 ◽  
Vol 1 ◽  
pp. 20
Author(s):  
Mikhail Balzannikov
Keyword(s):  
Power Plant ◽  
Peak Power ◽  
Power Plants ◽  
Hydroelectric Power Plant ◽  
Operating Conditions ◽  
Hydroelectric Power ◽  
Construction Work ◽  
Construction Costs ◽  
Suction Pipe ◽  
Hydroelectric Power Plants

The article describes run-of-the-river hydroelectric power plants. The authors specify the importance of performing technical and economic calculations in justifying the large-sized units of the water-supplying channel of a run-of-the-river hydroelectric power plant: turbine pits and suction (discharge) pipes. The study shows that the amount of construction work and the total cost of building a hydroelectric power plant depend on the size of these water supply units. The research objective is to analyze the validity of establishing the main dimensions of the suction pipes for modern technical and economic conditions. The researchers use the discounted income method. The calculations are performed for a hydroelectric power plant with an elbow suction pipe. The analysis of how the operating conditions of a hydroelectric power plant influence the savings of construction resources is carried out. The analysis shows that saving construction resources by reducing the length of the suction pipe is justified if the hydroelectric power plamt is designed to work only at peak power loads. For hydroelectric power plants operating at semi-peak or base power loads, the additional construction costs would be appropriate if leading to the decrease in pressure loss and to the increase in electricity generation.

scholarly journals Risk Based Maintenance in the Hydroelectric Power Plants

Energies ◽  
2019 ◽  
Vol 12 (8) ◽  
pp. 1502 ◽  
Author(s):  
Evrencan Özcan ◽  
Rabia Yumuşak ◽  
Tamer Eren
Keyword(s):  
Power Plant ◽  
Energy Supply ◽  
Power Plants ◽  
Low Cost ◽  
Hydroelectric Power Plant ◽  
Planning Problem ◽  
Maintenance Planning ◽  
Hydroelectric Power ◽  
Risk Levels ◽  
Hydroelectric Power Plants

In this study, maintenance planning problem is handled in one of the hydroelectric power plants which directly affect Turkey’s energy supply security with a fifth share in the total generation. In this study, a result is obtained by taking into consideration the multi-objective and multi-criteria structure of the maintenance planning in the hydroelectric power plants with thousands of complex equipment and the direct effect of this equipment on uninterrupted and low-cost electricity generation. In the first stage, the risk levels of the equipment in terms of the power plant are obtained with the combination of AHP (Analytical Hierarchy Process) and TOPSIS (technique for order preference by similarity to ideal solution) which are frequently used in the literature due to their advantages. Department-based maintenance plans of all equipment for periodic and revision maintenance strategies are formed by integrating these values into the time allocated for maintenance and the number of employees constraints. As a result of the application of this methodology which is designed for the first time in the literature with the integration of multi-criteria decision-making methods for the maintenance planning problem in a hydroelectric power plant, all elements that prevent the sustainable energy supply in the power plant are eliminated.

AC/DC/AC converter in a small hydroelectric power plant

2011 ◽  
Vol 59 (4) ◽  
pp. 507-511 ◽  
Author(s):  
A. Sikorski ◽  
M. Korzeniewski
Keyword(s):  
Power Plant ◽  
Power Plants ◽  
Power Grid ◽  
Hydroelectric Power Plant ◽  
Induction Generator ◽  
Hydroelectric Power ◽  
Transient States ◽  
Voltage Decay ◽  
Start Up ◽  
Hydroelectric Power Plants

AC/DC/AC converter in a small hydroelectric power plant The article discusses application of AC/DC/AC converter cooperating with an induction generator in small hydroelectric power plants. The induction generator works with power grid or a separated group of receivers, enabling to generate power even at low speeds of the turbine. The article provides also results of the investigation concerning the functioning of the generator coupled with AC/DC/AC converter in steady and transient states during start-up and voltage decay.

scholarly journals Spillage Forecast Models in Hydroelectric Power Plants Using Information from Telemetry Stations and Hydraulic Control

Energies ◽  
2021 ◽  
Vol 14 (1) ◽  
pp. 184
Author(s):  
Pedro H. M. Nascimento ◽  
Vinícius A. Cabral ◽  
Ivo C. Silva Junior ◽  
Frederico F. Panoeiro ◽  
Leonardo M. Honório ◽  
...  
Keyword(s):  
Power Plants ◽  
Hydroelectric Plant ◽  
Hydroelectric Power Plant ◽  
Supervised Machine Learning ◽  
Machine Learning Techniques ◽  
Hydroelectric Power ◽  
Hydraulic Control ◽  
Generation Planning ◽  
Hydroelectric Power Plants ◽  
Forecast Models

Hydroelectric power plants’ operational decisions are associated with several factors, such as generation planning, water availability and dam safety. One major challenge is to control the water spillage from the reservoir. Although this action represents a loss of energy production, it is a powerful strategy to regulate the reservoir level, ensuring the dam’s safety. The decision to use this strategy must be made in advance based on level and demand predictions. The present work applies supervised machine learning techniques to predict the operating condition of spillage in a hydroelectric plant for 5 h ahead. The use of this method, in real time, aims to assist the operator so that he can make more assertive and safer decisions, avoiding waste of energy resources and increasing the safety of dams. The Random Forest and Multilayer Perceptron methods were used to define the architecture compared to the forecasting capacity. The proposed methodology was applied to a 902.5 MW Hydroelectric Power Plant located on the Tocantins River, Brazil. The results demonstrate effective assistance to operators in the decision-making, presenting accuracy of up to 99.15% for the spill decision.

scholarly journals Bi-rotor micro hydro power plant for energy supply to isolated consumers

2018 ◽  
Vol 7 (2.13) ◽  
pp. 173
Author(s):  
Alaybek D. Obozov ◽  
Ruslan A. Akparaliyev ◽  
Taalaybek T. Mederov ◽  
Victor G. Krasnov
Keyword(s):  
Renewable Energy ◽  
Power Plant ◽  
Lattice Theory ◽  
Power Plants ◽  
Hydroelectric Power Plant ◽  
Hydroelectric Power ◽  
Experimental Stand ◽  
Hydroelectric Power Plants ◽  
Characteristics Analysis ◽  
Hydro Turbines

This paper is dedicated to comparative analysis and description of a micro hydroelectric power plant with bi-rotor hydro generator. Based on the characteristics analysis, this paper describes a renewable energy source for a small watercourse; the feasibility of micro hydroelectric power plants with bi-rotor hydro generator is demonstrated. The features of their operation require in-depth research to substantiate parameters of such installations. This paper presents the analysis of the usage of micro hydroelectric solutions with bi-rotor hydro generator. The lattice theory problem was solved, which made it possible to determine the shape of the profile according to a given law of velocity distribution (pressure) on the contour. The experimental stand was developed, and the experiments were conducted to identify the dependence of the frequency of rotation from the flow and the dependence of the rotational frequencies of hydro turbines from various loads. Based on the results obtained, the optimum values of the rotational speed were identified. Presented results of experimental research are of significance and can be applied practically in design of micro hydroelectric power plants with bi-rotor hydro generator. Keywords: Bi-Rotor Hydro Generator; Differential Equation; Rotational Flows; Function; Hydraulic Models; Kinetic Energy; Renewable Energy Sources; Velocity Measurements.                                                                                                                     This paper is dedicated to comparative analysis and description of a micro hydroelectric power plant with bi-rotor hydro generator. Based on the characteristics analysis, this paper describes a renewable energy source for a small watercourse; the feasibility of micro hydroelectric power plants with bi-rotor hydro generator is demonstrated. The features of their operation require in-depth research to substantiate parameters of such installations. This paper presents the analysis of the usage of micro hydroelectric solutions with bi-rotor hydro generator. The lattice theory problem was solved, which made it possible to determine the shape of the profile according to a given law of velocity distribution (pressure) on the contour. The experimental stand was developed, and the experiments were conducted to identify the dependence of the frequency of rotation from the flow and the dependence of the rotational frequencies of hydro turbines from various loads. Based on the results obtained, the optimum values of the rotational speed were identified. Presented results of experimental research are of significance and can be applied practically in design of micro hydroelectric power plants with bi-rotor hydro generator.          

scholarly journals Factors Influencing the Determination of the Gyrosures Potential of Small Rivers

2021 ◽  
Vol 264 ◽  
pp. 03077
Author(s):  
Alifbek Kirgizov ◽  
Sherkhon Sultonov ◽  
Khislatbek Usmonov ◽  
Mirzosharif Rajabov
Keyword(s):  
Renewable Energy ◽  
Sea Level ◽  
Power Plants ◽  
Renewable Energy Sources ◽  
Small Rivers ◽  
Energy Sources ◽  
Hydroelectric Power ◽  
The World ◽  
Hydroelectric Power Plants

The article examines the main trends in the use of renewable energy sources in the world. The article examines the main trends in the use of renewable energy sources in the world. The use of renewable sources is associated with the depletion of reserves of carbonaceous minerals and a decrease in greenhouse gas emissions into the atmosphere. The article presents the main, according to the authors, reasons for the incorrect determination of the potential of small hydro resources in the Republic of Tajikistan. In recent years, many small hydroelectric power plants have been built, which are ineffective. For this, the authors propose a more detailed study of the watercourse regime and the determination of its potential for the minimum and maximum tributaries and the possibility of its use, the influence of hydrological, socio-economic factors on the determination of the potential of small rivers during the construction of small hydroelectric power plants. Zoning of small watercourses is proposed for a more detailed determination of the watercourse capacity and the possibility of constructing small hydroelectric power stations on them. The influence of altitude above sea level on the output of the rated power of installations of renewable energy sources is considered. As it shows, the experience of operation and the above statistical analysis at the existing small hydroelectric power plants with an altitude of SHPPs above sea level, their nominal capacity will decrease. The decrease in the nominal output power of small hydroelectric power plants with an air-cooling system is associated with the rarefaction of atmospheric air.

Risk Management in Small Hydroelectric Power Plants (SHPPs) in Colombia

2020 ◽  
pp. 223-246
Author(s):  
Gustavo Alberto Villamarin ◽  
Flor Nancy Díaz-Piraquive
Keyword(s):  
Risk Management ◽  
Power Plants ◽  
Renewable Energy Sources ◽  
Hydroelectric Power Plant ◽  
Hydroelectric Power ◽  
Technical Standards ◽  
Global Trend ◽  
Hydroelectric Power Plants ◽  
Risk Management Methodology ◽  
Generation Power

Although Colombia has more than 50 years of experience developing hydropower projects, the recent Hidroituango project crisis has opened the debate regarding risk management (RM) in generation power projects, especially for non-conventional renewable energy sources (NCRES) where there are no academic studies for Colombian case. This chapter develops a methodological proposal based on PMBOK, ISO standard, and Colombian technical standards, that will allow identification, assessment, and management of the risks inherent in small hydroelectric power plant (SHPP) projects. All this in the context of the opportunities generated by Law 1715 of 2014 and the mega global trend of transition from fossil sources of energy to NCRES. The methodology was built based on: a state of the art review, an expert's knowledge consultation, and a Delphi expert's assessment analysis. The result is a project risk management methodology that includes: holistic identification of risk variables in SHPP projects, assessment of experts and response to inherent and residual risks.

scholarly journals Cost risk of construction of small hydroelectric power plants

2019 ◽  
Vol 262 ◽  
pp. 07004 ◽  
Author(s):  
Jarosław Górecki ◽  
Ewa Płoszaj
Keyword(s):  
Power Plant ◽  
Construction Projects ◽  
Power Plants ◽  
Mechanical Energy ◽  
Hydroelectric Power Plant ◽  
Hydroelectric Power ◽  
Construction Costs ◽  
Hydroelectric Power Plants ◽  
Knowledge Of Persons ◽  
Technical Construction

The growing demand for electricity forces the humanity to find the most economical methods of its production. Functioning without electricity in today's world deprives human from the possibility of a free existence, and even completely prevents it because of the technicisation of society. Growing awareness of acquiring "clean" environmentally-friendly energy from renewable sources contributes to the successive development of this sector of the economy. The purpose of the article was to analyse the risk of construction costs for small hydroelectric power plants along with an indication of the location and needs of a small hydroelectric power plant in Poland. The subject of the study was a small hydroelectric power plant producing electricity, using a turbine to convert the kinetic energy of water into mechanical energy. Aiming at illustrating the benefits of the discussed investment based on the estimation of construction costs and, as a result, financial results, a specific case of a small hydroelectric power plant located in the region of Kujawsko-Pomorskie [Kuyavian-Pomeranian Viovodeship] in central Poland was analysed. The intended research objective was achieved using industry literature, magazines as well as technical knowledge of persons holding building qualifications (including hydro-technical construction) and materials made available by two Bydgoszcz companies specializing in the implementation of small hydroelectric power plants. TheCOMAR- Jarek Górecki®algorithm, which operates in the industry as the author's concept of calculating the variation of financial outlays incurred for the implementation of investment and construction projects, was used to analyse the risk of costs of a construction project.

Sign in / Sign up

Export Citation Format

Share Document