scholarly journals Studi Awal Pemanfaatan Turbin Screw pada Aliran Sungai Kecil di Kota Jambi

2020 ◽  
Vol 2 (2) ◽  
pp. 29
Author(s):  
Fadli Eka Yandra ◽  
S Umar Djufri
Keyword(s):  
Water Pressure ◽  
Hydroelectric Power Plant ◽  
Small Scale ◽  
Hydroelectric Power ◽  
Small Water ◽  
Turbine Performance ◽  
Low Head ◽  
Pitch Ratio ◽  
Water Turbines ◽  
The City

The use of archimedes screw has shifted its use from pumps to a source of hydropower at low heads as water turbines. Archimedes srew turbine performance is influenced by several parameters including turbine submersion level, turbine tilt angle, pitch ratio, and number of blades. The contour of the lowland Jambi city that is passed by the Batanghari watershed makes the drainage potential can be utilized to become a small-scale hydroelectric power plant using screw turbines, because the contour of Jambi City is low, resulting in small water pressure although the discharge is sometimes large due to the overflow of the Batanghari river, then the choice of turbine with a low head is the solution, in this study, a study was made to calculate the potential drainage flow in the city of Jambi, whether it can be used or not.

scholarly journals Design and Construction of Single Phase Radial Flux Permanent Magnet Generators for Pico hydro Scale Power Plants Using Propeller Turbines in Water Pipes

2020 ◽  
Vol 188 ◽  
pp. 00006
Author(s):  
Eko Yohanes Setyawan ◽  
Yusuf Ismail Nakhoda ◽  
Awan Uji Krismanto ◽  
Lalu Mustiadi ◽  
Erkata Yandri ◽  
...  
Keyword(s):  
Power Plant ◽  
Power Plants ◽  
Permanent Magnets ◽  
Water Pressure ◽  
Hydroelectric Power Plant ◽  
Small Scale ◽  
Hydroelectric Power ◽  
Special Profile ◽  
Water Turbine ◽  
Main Components

Pico hydro or a small scale hydroelectric power plant is used as the rotating energy of the generator. Pico hydro is a hydroelectric power plant that has a power of less than 5 kW. Technically, Pico hydro has three main components namely water, turbine and generator. Turbine type propeller reaction has a special profile that causes a decrease in water pressure during the blades. This pressure difference exerts force on the blade so that the runner (rotating part of the turbine) can rotate. Permanent magnets are used to produce magnetic flux. Permanent magnets used are rare-eatrhrod magnet material, neodymium-iron-boron NdFeB with N35 type. The planned generator released is 36.85 V, 500 rpm, 50 hz. This designed water turbine has four blades which cannot change its angle. As for the measurement results produce a voltage of 35.1 V with a manufacturing efficiency of 95 %. Charging the battery voltage must be more than 12 V, therefore the generator must be turned at least 200 rpm with a voltage of 14 V to be used for charging batteries.

Water Level Control of Small-scale Hydroelectric Power Plant

2002 ◽  
Vol 122 (6) ◽  
pp. 989-994
Author(s):  
Shinichiro Endo ◽  
Masami Konishi ◽  
Hirosuke Imabayashi ◽  
Hayami Sugiyama
Keyword(s):  
Power Plant ◽  
Water Level ◽  
Hydroelectric Power Plant ◽  
Small Scale ◽  
Hydroelectric Power ◽  
Level Control

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 Performance of rotational speed controlled small-scale head-dependent hydroelectric power plant

2008 ◽  
Vol 1 (06) ◽  
pp. 500-501
Author(s):  
Tuomo Lindh ◽  
◽  
Risto Tiainen ◽  
Jero Ahola ◽  
Markku Niemela ◽  
...  
Keyword(s):  
Power Plant ◽  
Rotational Speed ◽  
Hydroelectric Power Plant ◽  
Small Scale ◽  
Hydroelectric Power

scholarly journals Evaluasi Keandalan PLTA Bakaru

2021 ◽  
Vol 19 (1) ◽  
pp. 80
Author(s):  
Akbar Tanjung ◽  
Arman Jaya ◽  
Suryanto Suryanto ◽  
Apollo Apollo
Keyword(s):  
Power Plant ◽  
Hydroelectric Power Plant ◽  
Capacity Factor ◽  
Energy Utilization ◽  
Hydropower Plant ◽  
Hydroelectric Power ◽  
Hydro Power ◽  
Gross Energy ◽  
Conducting Research ◽  
The City

One form of water energy utilization is done by building a Hydroelectric Power Plant (PLTA) in Indonesia, the Bakaru PLTA is one of the projects within PT. PLN (Persero). This project is a Hydro Power Plant Master project with a SULSELRABAR transmission located 246 km from the city of Makassar. The operation of the Bakaru hydropower system is certainly expected to work optimally, reliably and efficiently. Therefore, evaluation or data on the performance of the generator itself is needed. This study was conducted to determine the condition of the Bakaru hydropower plant based on the equivalent availability factor (EAF) and Net Capacity Factor (NCF) and Cost of Production (BPP). The data used is operating data on the Bakaru hydropower plant for 1 year. The data was obtained by using the documentation technique, while the data analysis was carried out using the Microsoft Excel program. After conducting research, it can be concluded that the condition of the Bakaru hydropower plant in 2017 is considered normal, seen from the EAF value reaching 94.15% and the average EFOR value of 2.4% with the number of Service Hours (SH) of 16,912.93 hours from 2 units. with the percentage of Service Hours to Period Hours reaching 96.53%. Meanwhile, the Net Capacity Factor of the Bakaru hydropower plant in 2017 reached 85.83%, with a total gross energy production of 945,372.50 MWh. This value exceeds the target that has been set.

Vibration Characteristics of a 50MW Francis Type Hydro Power Plant

2018 ◽  
Author(s):  
Y. Cho ◽  
Y. R. Oh ◽  
J. W. Choi ◽  
Y. J. Kim ◽  
J. Novotny ◽  
...  
Keyword(s):  
Power Plant ◽  
Hydroelectric Power Plant ◽  
Vibration Characteristics ◽  
Operating Conditions ◽  
Scale Model ◽  
Small Scale ◽  
Hydroelectric Power ◽  
Rotating Shaft ◽  
Engineering Structures ◽  
Hydro Power

Vibration characteristics of the rotating machinery has been usually managed to facilitate the deterioration of the equipment and to prevent accident in advance. In a hydropower turbine, pressure pulsation characteristics to induce vibration is investigated during the model testing with a small scale model turbine for various operating conditions, and a prototype turbine is constructed to operate stably on the site. However, the model test has limitation that can’t be considered together with the vibration characteristics of a generator itself and of civil engineering structures for the building that support a turbine and a generator. Therefore, field tests of vibration for a hydroelectric power plant are carried out periodically, thereby maintaining reliability for safe operation of power generation facilities. In the study, the vibration of a Francis type hydroelectric power plant operated over 30 years and overhauled a year and a half ago was measured and its characteristics has been investigated. Displacement and velocity sensors were installed at appropriate positions to measure the vibration of the rotating shaft and bearing support of a turbine and a generator, and the vibration characteristics of a typical hydroelectric power plant have confirmed by analyzing the measurement results. The vibration characteristics of rotating shaft and non-rotating parts of the hydroelectric turbine have been analyzed to confirm the degree of aging of the plant. Vibration in the power plant building depending on the operating conditions was also measured to be large enough to sense, and its frequency characteristics were analyzed.

scholarly journals WATERMILL AND SMALL-SCALE HYDROELECTRIC POWER PLANT LANDSCAPES ASSESSED ACCORDING TO ECOLOGICAL ASPECTS / VANDENS MALŪNŲ IR MAŽŲJŲ HIDROELEKTRINIŲ KRAŠTOVAIZDŽIO VERTINIMAS EKOLOGINIAIS ASPEKTAIS

2013 ◽  
Vol 5 (3) ◽  
pp. 266-274 ◽  
Author(s):  
Lilita Lazdāne
Keyword(s):  
Power Plant ◽  
Hydroelectric Power Plant ◽  
Field Studies ◽  
Small Scale ◽  
Hydroelectric Power ◽  
Local Planning ◽  
Ecological Aspects ◽  
Distribution Ranges ◽  
Landscape Character ◽  
Definition Of

Research of watermill and small-scale hydroelectric power plant (HPP) landscapes in Latvia according to ecological aspects is a part of a more complex research. The aim of this research is to examine the existing situation of watermill and small-scale HPP landscapes in Latvia by applying the ecological assessment criteria, and then try to formulate a definition of common tendencies of the landscape character. This paper provides a landscape inventory matrix for research in the field studies of landscape identification at the local planning level. The duration of the research was from 2010 to 2012. The research includes 42 territories starting with the three most densely developed areas in Latvia: in Latgale, Kurzeme and Vidzeme uplands distribution ranges. The research results reflect tendencies of the landscape features assessed according to the previously developed criteria of ecological aspects. Santrauka Latvijos vandens malūnų ir mažųjų hidroelektrinių kraštovaizdžio vertinimo ekologiniais aspektais tyrimas yra kompleksinio tyrimo dalis. Tyrimo tikslas yra įvertinti esamą vandens malūnų ir mažųjų hidroelektrinių kraštovaizdžio situaciją ekologiniais aspektais ir išryškinti bendrąsias kraštovaizdžio charakterio tendencijas. Straipsnyje atspindėta kraštovaizdžio inventorizavimo matrica kraštovaizdžiui identifikuoti planavimo lygmeniu. Tyrimas atliktas 2010–2012 metais. Tyrimas apima 42 teritorijas, išsidėsčiusias trijose tankiausiai apgyvendintose Latvijos dalyse: Latgaloje, Kuržemėje ir Vidžemėje. Remiantis anksčiau suformuluotais kriterijais kraštovaizdžiui tirti ekologiškumo aspektais, tyrimo rezultatai atskleidžia tam tikras tendencijas.

scholarly journals Desain Underwater Rotor Untuk Memanfaatkan Laju Aliran Sungai Sebagai Pembangkit Listrik Tenaga Air

2021 ◽  
Vol 5 (2) ◽  
pp. 77
Author(s):  
Rendi Rendi ◽  
Budi Hatradi ◽  
Muhammad Irfansyah ◽  
Puteri Puteri
Keyword(s):  
Hydroelectric Power Plant ◽  
Power Coefficient ◽  
Hydroelectric Power ◽  
Test Parameter ◽  
Moment Coefficient ◽  
Rotor Design ◽  
Turbine Performance ◽  
Plate Design ◽  
The Moment ◽  
Overlap Ratio

<p><em>This study aims to design an underwater rotor to utilize the flow rate of the river as a hydroelectric power plant. In this study, an underwater rotor design model will be made with three variations in the number of blades, namely three, six, nine blades. The test parameter observed in this study is the turbine performance through the value of the power coefficient (cp) and the moment coefficient (cm). The method used in this research is an experimental method, namely by making a turbine model with a laboratory scale. The results show that the underwater rotor designed with aspect ratio = 2.0, overlap ratio = 0, end-plate diameter = 1.1d then the barrier plate design with L/D ratio = 1.2 60º provides the highest power coefficient and moment coefficient, namely respectively 0.15 and 0.27 in the design with the number of blades 3 (three)</em></p>

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