scholarly journals Optimal Long-Term Hydro Generation Scheduling of Small Hydropower Plant (SHP) using Metaheuristic Algorithm in Himreen Lake Dam

2017 ◽  
Vol 131 ◽  
pp. 04017 ◽  
Author(s):  
Ali Thaeer Hammid ◽  
Mohd Herwan Sulaiman
Keyword(s):  
Hydropower Plant ◽  
Metaheuristic Algorithm ◽  
Small Hydropower ◽  
Generation Scheduling

scholarly journals Fine-scale multiannual survey of benthic invertebrates in a glacier-fed stream used for hydropower generation

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Alberto Scotti ◽  
Roberta Bottarin
Keyword(s):  
Research Programme ◽  
Eastern Alps ◽  
Hydropower Plant ◽  
Research Network ◽  
Small Hydropower ◽  
Hydropower Plants ◽  
Before And After ◽  
Long Term Ecological Research ◽  
Research Facilities

AbstractThe present dataset contains information about aquatic macroinvertebrates and environmental variables collected before and after the implementation of a small “run-of-river” hydropower plant on the Saldur stream, a glacier-fed stream located in the Italian Central-Eastern Alps. Between 2015 and 2019, with two sampling events per year, we collected and identified 34,836 organisms in 6 sampling sites located within a 6 km stretch of the stream. Given the current boom of the hydropower sector worldwide, and the growing contribution of small hydropower plants to energy production, data here included may represent an important – and long advocated – baseline to assess the effects that these kinds of powerplants have on the riverine ecosystem. Moreover, since the Saldur stream is part of the International Long Term Ecological Research network, this dataset also constitutes part of the data gathered within this research programme. All samples are preserved at Eurac Research facilities.

scholarly journals JUSTIFICATION OF HYDROPOWER POTENTIAL OF THE VOVCHA RIVER FOR CONSTRUCTION OF SMALL HPP IN THE SITE OF GAVRYLIVKA RESERVOIR

2021 ◽  
Vol 4 (164) ◽  
pp. 144-152
Author(s):  
V. Kovalenko ◽  
H. Hapich ◽  
V. Zaporozhchenko ◽  
I. Shynkarenko ◽  
I. Chushkina ◽  
...  
Keyword(s):  
River Flow ◽  
Capacity Utilization ◽  
Hydropower Plant ◽  
Likelihood Method ◽  
Estimation Of Parameters ◽  
Small Hydropower ◽  
Research Results ◽  
Hydropower Potential ◽  
Annual Distribution

The article presents the research results of the hydropower potential of the Vovcha River in the site of Gavrilivka Reservoir for construction of a small hydropower plant. During the research, statistical methods were used to analyze the homogeneity of long-term fluctuations of river flow. Estimation of parameters of analytical distribution curves (average long-term value Q, coefficient of variation СV, ratio of asymmetry coefficient to variation coefficient CS/CV) was performed by the maximum likelihood method. Determination of the estimated annual distribution of the flow in the site is carried out by the real year method. Methods for calculating the hydropower potential are based on the results of hydrological investigation. To achieve stated objective, the following tasks are solved: 1) the water resources of the Vovcha River in the Gavrilivka Reservoir were quantified; 2) the hydropower potential of the Gavrilivka Reservoir is estimated according to model years; 3) the value of technically achievable, guaranteed and ecologically justified hydropower potential is established; 4) technical and economic indicators of project practicability are assessed. The provision of HPP capacity has been determined both for the whole series of observations and for the distinctive model years. In particular, the provision capacity of N = 50 kW will amount on average 57% (208 days per year), and for the guaranteed component of N = 44 kW it will amount 62% (226 days per year). According to the research results, it is established that the optimal capacity of the hydropower plant is 50÷75 kW with a designed capacity utilization of 80÷70%, respectively. The approximate payback period will be 7-9 years with a 10% amortization rate, and accordingly a possible replacement of equipment in 10 years.

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.

scholarly journals Fishways as Downstream Routes in Small Hydropower Plants: Experiences with a Potamodromous Cyprinid

Water ◽  
2021 ◽  
Vol 13 (8) ◽  
pp. 1041
Author(s):  
Francisco Javier Sanz-Ronda ◽  
Juan Francisco Fuentes-Pérez ◽  
Ana García-Vega ◽  
Francisco Javier Bravo-Córdoba
Keyword(s):  
General Assumption ◽  
Downstream Migration ◽  
Life Cycles ◽  
Hydropower Plant ◽  
Small Hydropower ◽  
Pit Tag ◽  
Safe Alternative ◽  
Hydropower Plants ◽  
Longitudinal Connectivity ◽  
Alternative Routes

Fish need to move upstream and downstream through rivers to complete their life cycles. Despite the fact that fishways are the most commonly applied solution to recover longitudinal connectivity, they are not considered viable for downstream migration. Therefore, alternative facilities are recommended to facilitate downstream migration. However, a few recent studies have disagreed with this general assumption, showing the potential for bidirectional movements. This study advances our understanding of the potential of fishways for downstream migration by studying their efficiency in a run-of-the-river hydropower plant in the Duero River (Spain). To achieve this, downstream movements of the Iberian barbel (n = 299) were monitored in a stepped fishway for two years with passive integrated transponder (PIT)-tag technology, considering the effect of fish origin and release zone. The results showed that 24.9% of barbels descended through the fishway, with the origin and release zone affecting the fishway location. In addition, downstream movements were observed throughout the whole year, except in winter. The study concludes that, under specific scenarios, fishways could act as safe alternative routes for downstream migration.

scholarly journals Manganese pollution of drinking water extracted from the terrace of Vacha River

2021 ◽  
Vol 82 (3) ◽  
pp. 204-206
Author(s):  
Aleksey Benderev ◽  
Nikolay Stoyanov ◽  
Stefan Dimovski ◽  
Svetlana Bratkova ◽  
Boyka Mihaylova
Keyword(s):  
Drinking Water ◽  
Hydropower Plant ◽  
River Terrace ◽  
Groundwater Extraction ◽  
Small Hydropower ◽  
Artificial Lake ◽  
Redox Environment ◽  
Poorly Soluble ◽  
Manganese Compounds

The presented study is aimed towards determining the reasons for manganese pollution of drinking water extracted from the terrace of Vacha River. The results show that this is due to the seepage of from the artificial lake, formed after the construction of a small hydropower plant. Another possible reason is the natural accumulation in the upper parts of the river terrace of poorly soluble in water manganese compounds that turn into soluble ones as a result of changes in the redox environment, which take place in the conditions of very intensive groundwater extraction.

scholarly journals Macroinvertebrate Recovery to Varying Hydropeaking Frequency: A Small Hydropower Plant Experiment

2021 ◽  
Vol 8 ◽  
Author(s):  
Claire Kathryn Aksamit ◽  
Mauro Carolli ◽  
Davide Vanzo ◽  
Christine Weber ◽  
Martin Schmid
Keyword(s):  
Field Experiments ◽  
Ecological Impact ◽  
Power Production ◽  
Hydropower Plant ◽  
Small Hydropower ◽  
Hydropower Plants ◽  
Recovery Times ◽  
Plant Experiment ◽  
Specific Reactions ◽  
Macroinvertebrate Drift

As the demand for hydroelectricity progresses worldwide, small hydropower operators are increasingly examining the feasibility of using existing infrastructure (e.g., settling basins) in run-of-the-river schemes for intermittent power production. Such flexible production causes short-term discharge fluctuations (hydropeaking) in downstream reaches with potential adverse effects for the sensitive fauna and flora in alpine streams. In an experimental field study on a previously unregulated section of the upper Rhone River (Switzerland), we measured density and composition of macroinvertebrate drift in two habitats (riffle, pool) following a 15-minute hydropeaking wave. The experimental hydropeaking was replicated five times over 14 days with decreasing recovery times between peaks (8, 3, 2 days, and 24 h), and drift measurements were compared with kick samples for the benthic community. Results from the kick sampling showed that benthic macroinvertebrate abundance and composition did not significantly change between the experimental peaks. There were habitat specific reactions in macroinvertebrate drift to hydropeaking, with the pool experiencing more pronounced drift abundances than the riffle. Overall, drift abundance was not significantly correlated with recovery time, but results indicate taxa-specific differences. This research advocates for the importance of completing more in-situ field experiments in order to better understand the ecological impact of flexible power production in small hydropower plants.

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