scholarly journals ORGANIZATIONAL AND ECONOMIC MECHANISM OF RATIONAL USE OF RESOURCE POTENTIAL OF WATER OBJECTS AT THE REGIONAL LEVEL

2020 ◽  
pp. 75-85
Author(s):  
O. Dehtiarenko ◽  
S. Shashkov ◽  
O. Misechko
Keyword(s):  
Sharp Increase ◽  
Hydroelectric Power Plant ◽  
Market Value ◽  
Regional Level ◽  
Electricity Production ◽  
Hydroelectric Power ◽  
Ecological Significance ◽  
Small Hydropower ◽  
Resource Potential ◽  
Resource Function

One of the promising areas for the development of renewable energy in Ukraine could be the expansion of the small hydroelectric power plant (HPP). The main obstacle to this is the absence of a sharp increase in the profitability of such facilities, since the operation of small hydropower facilities is based on the use of only one of their resource function, which is not consistent with the need to intensify the use of nature and integrated use of natural resources. The most expedient direction of increasing the efficiency of functioning of small hydropower facilities, increasing their economic, social and ecological significance is the organization of regional natural-economic complexes (RPGK) whose activity is based on the combination of electricity production, maintaining the sustainability of the recreation ecosystem, can significantly increase their market value. Also important is the issue of software to solve this problem.

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 Checklist of the fishes from Jamari River basin, in areas under influence of dams, Rondônia, Brazil

2020 ◽  
Vol 20 (1) ◽  
Author(s):  
Rianne Caroline de Oliveira ◽  
Gabriel de Carvalho Deprá ◽  
Cláudio Henrique Zawadzki ◽  
João Carlos Barbosa da Silva ◽  
Weferson Júnio da Graça
Keyword(s):  
New Species ◽  
River Basin ◽  
Hydroelectric Power Plant ◽  
Hydroelectric Power ◽  
Small Hydropower ◽  
Hydropower Plants ◽  
Madeira River ◽  
Area Of Influence ◽  
Taxonomic Groups ◽  
Madeira River Basin

Abstract: The Madeira River is the most extensive tributary of the Amazon River and has the largest diversity of fishes in the world. On its right bank, the Madeira River receives the Jamari River, in which the first hydroelectric power plant (HPP) in State of Rondônia, Samuel HPP, was built. Besides this, other dams were built in the Jamari River and its tributaries, however, the available information in the scientific literature about the ichthyofaunistic diversity of this basin is rare. This work aims to provide an ichthyofaunistic inventory in a region of the Jamari river basin, in the State of Rondônia, where three small hydropower plants (SHPs) were implemented. The ichthyofauna was sampled in 16 expeditions between August 2015 and December 2018. Gill nets and seine nets were used with different meshes, as well as longlines and cast nets at different times of the day. Additionally, 81 INPA lots of species from the Samuel HPP area of influence were reanalyzed. Fish were identified according to the specialized literature, as well as in consultations with experts of various taxonomic groups. Voucher specimens of the species were cataloged and deposited in the ichthyological collection of the Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura (Nupélia) of the Universidade Estadual de Maringá. A total of 230 species were recorded, of which 22 were putative new species, 117 were added to the Jamari River basin and 28 to the Madeira River basin. The continuation of the studies in this section of the Jamari river basin is fundamental for analysis of local impact due to the presence of dams. Moreover, the addition of putative new species to the Madeira River basin indicates gaps in the knowledge of Neotropical ichthyofauna.

scholarly journals Analysis of maintenance optimization in a hydroelectric power plant

2020 ◽  
Vol 1 (1) ◽  
pp. 23
Author(s):  
Francisco Javier Martinez Monseco
Keyword(s):  
Power Plant ◽  
Electricity Market ◽  
Hydroelectric Plant ◽  
High Reliability ◽  
Hydroelectric Power Plant ◽  
Electricity Production ◽  
Industrial System ◽  
Hydroelectric Power ◽  
Maintenance Techniques ◽  
Maintenance Plan

<p>This article presents a guide to designing a maintenance plan for any industrial system. As an example, it develops a maintenance plan for highly reliable equipment, such as a hydroelectric power plant, where instant availability and reliability are crucial in its operation. The development of the proposal serves as a basis for the transversal development of any industrial system that has the same operational objectives (manufacturing lines), transport (trains, aircraft) and also involves safety and environmental aspects in its proper functioning. Today’s society requires that there are more and more industrial processes in which the maximum availability of the systems must be guaranteed, and at the same time there must be a minimum number of incidents that prevent the unavailability of the process. The methodology used has consisted firstly of dividing the complex industrial system into systems to be analysed on the basis of the functions they have to perform, then on the basis of the fault history a list of potential faults to be analysed has been determined, taking into account the risk of the system itself. From here, the systems of the hydroelectric plant have been classified to determine the priorities of actions. The different maintenance techniques to be applied have been carefully considered, focusing on the need to analyse condition-based maintenance techniques, such as predictive techniques, which allow us to define the point of potential failure based on parameters, and thus be able to plan maintenance actions in a justified manner. In the specific case of a hydroelectric generation plant, the fundamental objective is based on the commitment to<br />operate in the electricity market (high reliability and immediate availability), and the performance of maintenance actions imply in most cases the shutdown of the plant and therefore the loss of income from electricity production. Finally, a design of a justified maintenance plan for a hydroelectric power plant has been proposed based on the methodology explained.</p>

Assessing the Profitability of Changing a Turbine for a Hydroelectric Power Plant Based on Long-Period Water Gauge Readings

2015 ◽  
pp. 35-53
Author(s):  
Jan H. Wiśniewski ◽  
Bartosz M. Olszański
Keyword(s):  
Net Present Value ◽  
Hydroelectric Power Plant ◽  
Added Value ◽  
Electricity Production ◽  
Test Case ◽  
Hydroelectric Power ◽  
The Real Estate ◽  
Engineering Level ◽  
Level Model ◽  
Internal Costs

The chapter focuses on explaining the construction of author's own engineering-level model which calculates energy production based on historical water level and flow rate readings as well as economic factors such as net present value of the proposed investment on the example of a HPP on the Wkra River. The model methodology assumes the identification of location's hydrological features and translates them into a set of contingency scenarios. Various internal costs, such as maintenance or labor costs, related to normal HPP activity and taxation are discussed and incorporated into the economic part of the model. Test case results indicate that for a series of good years in terms of water flow and electricity production, full repayment of initial investment costs is possible after less than three years. Results for the chosen modernization parameters indicate that within 10 years of installing a new turbine, even the most pessimistic case would bring added value to the real estate valuation.

scholarly journals Method of calculation of water-diverting structures of low-head hydroelectric power plant for power supply of small power consumers

2022 ◽  
Vol 1211 (1) ◽  
pp. 012012
Author(s):  
Y Y Zakharov ◽  
A R Lepeshkin
Keyword(s):  
Power Plant ◽  
Power Supply ◽  
Renewable Energy Sources ◽  
Hydroelectric Power Plant ◽  
Hydroelectric Power ◽  
Small Hydropower ◽  
Small Power ◽  
Method Of Calculation ◽  
Hydro Turbine ◽  
Low Head

Abstract In recent years and in many countries the economic development of distant regions is increasingly dependent on energy resources. This fact makes the world scientific community pay more attention to the renewable energy sources. Special attention is paid to the solar, wind and small hydropower for electrical consumers who have no possibility to connect to the central power supply lines. In the countries that have water resources the financial support is given to the development of small and micro hydropower stations. The present work presents the results of the research on the improved method of calculation of water-diverting structures of low-head hydroelectric power plant with an installed cross-jet hydro turbine that is actual for the power supply of small power consumers. The presented method can be used for the preliminary analysis of morphometric characteristics of water course as well as the basic parameters of a cross-jet hydro turbine.

A megegyezés gátja: vízelosztási kérdések Egyiptom, Szudán és Etiópia között

2020 ◽  
Vol 14 (1-2.) ◽  
pp. 21-42
Author(s):  
Rashed Daher
Keyword(s):  
Hydroelectric Power Plant ◽  
Electricity Production ◽  
The Political ◽  
Hydroelectric Power ◽  
Negative Consequences ◽  
Water Usage ◽  
Recent Developments ◽  
Political Choices ◽  
Under Construction ◽  
Shed Light

Recent developments of the Grand Ethiopian Renaissance Dam aiming to utilize the River Nile’s water for electricity production sparked serious debates in Africa. Under construction since 2011, the project has severe geopolitical consequences not only in its immediate neighbourhood but also in the downstream countries such as Sudan and Egypt that are almost exclusively reliant on the river’s water for industrial, agricultural, and household purposes. Although the Nile is the longest river on Earth, its water is shared by tens of millions of users in a region characterized by water scarcity. Therefore, the Ethiopian dam, with its potentially negative consequences, is considered an existential threat for Egypt and contributes to the political tensions between the two distant countries.This analysis aims to present the political choices behind this megaproject focusing on Egypt, Sudan, and Ethiopia and the impacts that different scenarios of water usage (how fast the reservoir behind the Dam is filled) may have on the downstream countries. In this sense, negotiations on the completion of the Dam and the hydroelectric power plant are crucial for Egypt’s water resources. My analysis tries to shed light on the importance of this topic in the Egyptian political discourseand show the changes in the political leeway of Egyptian leadership since 2011. As the case provides yet another illustration of interconnected environmental issues, my research also highlights the political and economic dilemmas embedded in similar situations.

scholarly journals Značaj monitoringa kvaliteta vode u jezerima hidroelektrana

2021 ◽  
Vol 23 (1) ◽  
pp. 29-31
Author(s):  
Vladana Rajaković-Ognjanović ◽  
Tina Dašić
Keyword(s):  
Climate Change ◽  
Water Quality ◽  
Power Plant ◽  
Aquatic Ecosystem ◽  
Hydrological Cycle ◽  
Monitoring Program ◽  
Hydroelectric Power Plant ◽  
Electricity Production ◽  
Hydroelectric Power ◽  
The Impact

When planning the construction of a hydroelectric power plant, an important segment is adequate monitoring of water quality. With an appropriate monitoring program, the multifunctional use of artificial lakes is enabled. Eutrophication (nutrient over-enrichment) of water in a lake is a phenomenon that has been noticed in all lakes. The consequence of eutrophication is the endangerment of the aquatic ecosystem. Eutrophication is a phenomenon that occurs as a response of the aquatic ecosystem to the increased concentration of nutrients, phosphorus (P) and nitrogen (N), due to natural and anthropogenic activities. Recent research indicates a correlation between local climate change and water circulation and the impact of climate change on all phenomena in the hydrological cycle. Temperature fluctuations, huge amounts of rain when precipitation is analysed, constant heating and increase in humidity all affect more intense eutrophication. The key conclusions of the research dealing with the construction of the hydroelectric power plant in Komarnica are: to introduce monitoring (permanent control) of water quality in lakes in order to minimize or control, even prevent eutrophication. Each artificial lake has its own unique characteristics. The dependence of chlorophyll, phosphorus and lake volume varies depending on the month, season and year. The proposal for the lake that will be built on Komarnica, which is part of the future hydroelectric power plant, is a monthly monitoring of the concentration of chlorophyll, nutrients and the volume of the lake. Seasonal monitoring depends on precipitation, hydrological and limnological characteristics and trends of dry and rainy episodes. Analyzes and previous research have shown that the introduction of mandatory parameters for monitoring water quality does not increase the cost of electricity production and energy conservation, but significantly improves and enhances the quality of the environment.

Assessing the Profitability of Changing a Turbine for a Hydroelectric Power Plant Based on Long-Period Water Gauge Readings

2017 ◽  
pp. 1236-1255
Author(s):  
Jan H. Wiśniewski ◽  
Bartosz M. Olszański
Keyword(s):  
Net Present Value ◽  
Hydroelectric Power Plant ◽  
Added Value ◽  
Electricity Production ◽  
Test Case ◽  
Hydroelectric Power ◽  
The Real Estate ◽  
Engineering Level ◽  
Level Model ◽  
Internal Costs

The chapter focuses on explaining the construction of author's own engineering-level model which calculates energy production based on historical water level and flow rate readings as well as economic factors such as net present value of the proposed investment on the example of a HPP on the Wkra River. The model methodology assumes the identification of location's hydrological features and translates them into a set of contingency scenarios. Various internal costs, such as maintenance or labor costs, related to normal HPP activity and taxation are discussed and incorporated into the economic part of the model. Test case results indicate that for a series of good years in terms of water flow and electricity production, full repayment of initial investment costs is possible after less than three years. Results for the chosen modernization parameters indicate that within 10 years of installing a new turbine, even the most pessimistic case would bring added value to the real estate valuation.

scholarly journals Assessment of the Resistance Value of Trash Racks at a Small Hydropower Plant Operating at Low Temperature

Energies ◽  
2020 ◽  
Vol 13 (7) ◽  
pp. 1775
Author(s):  
Natalia Walczak ◽  
Zbigniew Walczak ◽  
Jakub Nieć
Keyword(s):  
Hydroelectric Power Plant ◽  
Free Flow ◽  
Hydropower Plant ◽  
Hydraulic Structures ◽  
Hydroelectric Power ◽  
Small Hydropower ◽  
Frazil Ice ◽  
Head Losses ◽  
Hydropower Plants ◽  
Proper Operation

Trash racks are the first element mounted in inlet channels of hydraulic structures. Their primary task is to capture coarse pollutants flowing in the riverbed/river channel and protect water facilities downstream. With the use of these devices, it is possible to separate coarse suspended matter, branches carried with the current, floating plastic elements, etc., which undoubtedly contributes to a trouble-free flow through culverts or channels and prevents hydroelectric power plant turbines from failure. An important issue here is also to ensure the proper operation of trash racks, particularly in respect of hydraulic structures whose task is to convert water energy into electricity (hydropower plants). Proper operation of trash racks minimizes losses arising from obstructing the free flow of water through accumulated waste or, in the wintertime, through icing. Incorrect work in this area entails specific head losses, and consequently leads to economic harm. In the paper, the resistance values of trash racks were analyzed at small hydropower plants (SHPs) operating at low temperatures, determined under laboratory conditions, with the occurrence of frazil ice and ice. The results indicate that the added ice into the channel resulted in the formation of a cover in front of the trash racks with an average thickness of about 0.02 m. The accumulated ice increased the head losses up to 14%. The range of the ice cover depended on the weight added ice and reached 0.6 m in analyzed cases.

scholarly journals Impacts of Climate Change and the Need to Define an Efficient Operating Methodology for Nangbéto Dam

2021 ◽  
Vol 8 (5) ◽  
pp. 152-166
Author(s):  
M. Medewou ◽  
K. Klassou ◽  
P. Chetangny
Keyword(s):  
Climate Change ◽  
Power Plant ◽  
Industrial Development ◽  
Hydroelectric Power Plant ◽  
Electricity Production ◽  
Current Operator ◽  
Hydroelectric Power ◽  
Hydrological Data ◽  
The Impact ◽  
Impacts Of Climate Change

Climate change is a major threat to industrial development because of its adverse effects on the energy sector, especially hydroelectric power plants. This paper focuses on the analysis of the impact of climate change on the Mono River basin and the implications for the electricity production of Nangbéto Hydroelectric Power Plant. The approach consisted of combining historical hydrological data and physical, technical, and economic information to analyze the extent to which variations in average rainfall and global warming impacted the operation of the Nangbéto Hydroelectric Power plant. Based on the curves obtained, the impacts of climate change on the Mono River and on the operation of the Nangbéto Power Plant were recorded. Also, the management of the Nangbéto dam water retainer by the current operator was analyzed to highlight the strengths relating to the optimization of electricity production and the economic profitability of the plant. Keywords: Climate change, hydropower plant, optimization, hydrological data.

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