scholarly journals A conceptual framework for real time estimation of WFP for small hydroelectric power plant

Water Policy ◽  
2017 ◽  
Vol 19 (6) ◽  
pp. 1049-1062
Author(s):  
C. Sivapragasam ◽  
M. Pallikonda Rajasekaran ◽  
M. Vinotha
Keyword(s):  
Power Generation ◽  
Real Time ◽  
Water Footprint ◽  
Time Estimation ◽  
Hydropower Plant ◽  
Hydroelectric Power ◽  
Small Hydropower ◽  
Water Release ◽  
Large Reservoir ◽  
Operation Conditions

Abstract It is believed that the power sector, particularly hydroelectric power, contributes to a very high consumption of fresh water in terms of evaporation from storage reservoirs. Robust methods of water footprint (WFP) assessment will eventually help in the pricing of water and energy. Conventionally, WFP for hydropower plants is estimated by dividing the gross/net evaporation losses by power generation. This approach is highly biased when it comes to a small hydropower plant connected to a large reservoir. In this study, a two-pronged subjective–objective method is suggested for a reservoir with primary functions of power generation and downstream water release. The objective part is concerned with giving weight to the evaporation loss proportional to the water use while the subjective part is concerned with refining this by considering the real time reservoir operation conditions and taking into account the recommendations of the decision making authorities. The effect of timescale in WFP analysis is also studied and conclusions are drawn. Thumb rules for WFP estimation are evolved which will aid in such analysis. The implementation of the proposed methodology for any reservoir system is recommended using LabVIEW platform.

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 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.

ANN based Real-Time Estimation of Power Generation of Different PV Module Types

2009 ◽  
Vol 129 (6) ◽  
pp. 783-790 ◽  
Author(s):  
Syafaruddin ◽  
Engin Karatepe ◽  
Takashi Hiyama
Keyword(s):  
Power Generation ◽  
Real Time ◽  
Time Estimation ◽  
Pv Module ◽  
Real Time Estimation

scholarly journals SMALL HYDROPOWER IN LATVIA AND INTELLECTUALIZATION OF ITS OPERATING SYSTEMS / PAR MAZO HIDROENERĢĒTIKU LATVIJĀ UN TĀS STACIJU VADĪBAS SISTĒMAS INTELEKTUALIZĀCIJU

2013 ◽  
Vol 50 (6) ◽  
pp. 3-15 ◽  
Author(s):  
A. Mahnitko ◽  
J. Gerhards ◽  
O. Linkevics ◽  
R. Varfolomejeva ◽  
I. Umbrasko
Keyword(s):  
Power Generation ◽  
Mathematical Programming ◽  
Operating Systems ◽  
Optimality Criterion ◽  
Optimal Operation ◽  
Hydropower Plant ◽  
Small Scale ◽  
Small Hydropower ◽  
Reduced Gradient ◽  
Generalized Reduced Gradient

Abstract The authors estimate the potential for power generation from water resources of small and medium-sized rivers, which are abundant in Latvia. They propose the algorithm for optimal operation of a small-scale hydropower plant (SHPP) at the chosen optimality criterion in view of the plant’s participation in the market. The choice of SHPP optimization algorithm is made based on two mathematical programming methods - dynamic and generalized reduced gradient ones. Approbation of the algorithm is illustrated by an example of optimized SHPP operation.

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.

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 Design Aspects of Small-Hydropower Plant

2021 ◽  
pp. 1-9
Author(s):  
Bilal Abdullah Nasir
Keyword(s):  
Alternative Energy ◽  
Hydroelectric Power Plant ◽  
Hydropower Plant ◽  
Hydroelectric Power Station ◽  
Hydroelectric Power ◽  
Small Hydropower ◽  
Hydro Power ◽  
Power Stations ◽  
Generator Type ◽  
System Frequency

Presently, however, Hydroelectric is a source of power that can prove to be available to all, regardless of conditions such as weather. As history showed, a lot of development, as well as alterations, were made to this efficient supply of energy. Hydropower is a positive alternative energy source that nature provides, therefore, its effective usage is not prohibited. Although there are many disadvantages associated with the design and construction of a hydroelectric power plant, the advantageous features are even more enormous. This paper deals with construction and design aspects for the implementation of the small hydroelectric power station. The main parameters can be collected from the site. Then the turbine type and dimensions can be specified. The generator specifications,which is the main part in the system, for hydro-power stations can be obtained from the determination of turbine output power. These specifications involve mainly the rated power in KVA, the type of system, system frequency, the type of stator winding connection, rated load voltage, rated load current, load power factor, generator speed, method of the system cooling, and the generator type of excitation.

A machine for real-time estimation of the tribological characteristics of materials

2020 ◽  
Vol 86 (4) ◽  
pp. 61-65
Author(s):  
M. V. Abramchuk ◽  
R. V. Pechenko ◽  
K. A. Nuzhdin ◽  
V. M. Musalimov
Keyword(s):  
Real Time ◽  
Time Estimation ◽  
Tribological Characteristics ◽  
Continuous Processing ◽  
Friction Machine ◽  
Dynamic Friction Coefficient ◽  
Displacement Sensors ◽  
Frictional Interaction ◽  
Real Time Estimation ◽  
Automated Quality Control

A reciprocating friction machine Tribal-T intended for automated quality control of the rubbing surfaces of tribopairs is described. The distinctive feature of the machine consists in implementation of the forced relative motion due to the frictional interaction of the rubbing surfaces fixed on the drive and conjugate platforms. Continuous processing of the signals from displacement sensors is carried out under conditions of continuous recording of mutual displacements of loaded tribopairs using classical approaches of the theory of automatic control to identify the tribological characteristics. The machine provides consistent visual real time monitoring of the parameters. The MATLAB based computer technologies are actively used in data processing. The calculated tribological characteristics of materials, i.e., the dynamic friction coefficient, damping coefficient and measure of the surface roughness, are presented. The tests revealed that a Tribal-T reciprocating friction machine is effective for real-time study of the aforementioned tribological characteristics of materials and can be used for monitoring of the condition of tribo-nodes of machines and mechanisms.

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