Analyzing the potential and the load evaluation on Ubrug hydro power plant of Sukabumi, West Java

Built in 1923, the Ubrug Hydro Power Plant in Sukabumi was set up with an installed power of 5,94 MW on 1st unit and 2nd unit and 6,48 MW on the 3rd unit resulting in sum total of 18,36 MW. However, at present, the actual total power only generates 15,045 MW, a smaller number than its initial capacity, due to the lack of water discharge. Based on the measurement data, the load of the generator has experienced a decrease of power in normal field operation with a peak load of 9,5 MW and the lowest of 6 MW. On daily operations, only 2 generators are being operated, leaving the 3rd generator unoperated. This is due to the aging hydroelectric power plant on the location and the transition of forest functions in the upstream area, that serves as water absorption, to settlements of residents, and industrial estates. The other and the most salient cause is the waste carried by the Cicatih River coming along with the flow of water in the conduit.

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Micro-Hydro Power Plants (MHPP): Technical and analytical studies in creating experimental learning media for physics students

Momentum Physics Education Journal ◽

10.21067/mpej.v5i1.4876 ◽

2021 ◽

pp. 53-64

Author(s):

Zuffa Anisa ◽

Anggun Apprianda ◽

Herta Novianto ◽

Indriyani Rachman

Keyword(s):

Power Plant ◽

Power Plants ◽

Water Discharge ◽

Turbine Blades ◽

Electric Energy ◽

Hydroelectric Power Plant ◽

Power Input ◽

Hydroelectric Power ◽

Hydro Power ◽

Factors Influencing

Nowadays, direct media use in learning energy is rarely found. Therefore, the authors intended to design a mini micro-hydro power plant (MHPP) in order to give direct experiences to students. This study generally aims to develop a mini MHPP consisting of equipment design, component selection, and the MHPP assembly. A test on discharge, heights, and produced power is then conducted. The data acquired are then analyzed in terms of either Pteotirik or Preal power using a predetermined equation. An analysis to the factors influencing the P values is then carried out. The power input of resulted from the water discharge management is 35.64 mW, while that of the power output is 9,61 mW. The efficiency of the MHPP set is by 26.96% which is considered quite low due to such factors as turbine blades, penstock pipes, generators, and the shift from water potential energy to other types of energies which is inevitable. It is expected that the developed mini MHPP is applicable as practicum learning media giving a lot of such learning experiences to students as to identify how hydroelectric power plant is, how the water energy shifts into electric energy, how high the electricity produced is, and to analyze factors influencing how high and low the electricity produced by a power plant.

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Rancang Bangun Miniatur Pembangkit Listrik Tenaga Mikrohidro Dibengkel Teknik Listrik Universitas Batanghari Jambi

Journal of Electrical Power Control and Automation (JEPCA) ◽

10.33087/jepca.v2i2.31 ◽

2020 ◽

Vol 2 (2) ◽

pp. 41

Author(s):

Ottentri Ottentri ◽

Hendi Matalata

Keyword(s):

Power Plant ◽

Rural Areas ◽

Power Plants ◽

Water Discharge ◽

Hydroelectric Power Plant ◽

Electrical Energy ◽

Hydroelectric Power ◽

Mountainous Areas ◽

Know How ◽

Essential Components

The need for electrical energy is a necessity that can not be ditawar–tawar anymore for a life worthy of every person in this day. Generally, remote rural areas located in mountainous areas have a large potential of water energy, so that the hydroelectric power plant is one of the energy sources that can be developed. Jambi is an area covered with Batanghari River flows. This research aims to know how the work process of Microhydro power plant. Components of the essential components of miniature microhydro power plants are reservoirs, rapid pipes, turbines, generators where these components are not loose bias, interrelated to one another. Round of Tubin obtained from the experiment is 400 rpm with water discharge 0.0016 m3/s. The maximum voltage generated by the generator is 18 volts. Voltage generated from the generator to charging the Batrai used inverter of 13.1 volts. The load will remain on even though the main energy source is the generator stop in the same, because the energy of the second is Batrai.

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Evaluasi Keandalan PLTA Bakaru

Jurnal Sinergi Jurusan Teknik Mesin ◽

10.31963/sinergi.v19i1.2762 ◽

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.

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Rancang Bangun Simulator Kincir Pembangkit Listrik Floating Hydro

Accurate: Journal of Mechanical Engineering and Science ◽

10.35970/accurate.v2i1.594 ◽

2021 ◽

Vol 2 (1) ◽

pp. 27-31

Author(s):

Dian Prabowo ◽

Pujono Pujono

Keyword(s):

Power Plant ◽

Power Plants ◽

Design Method ◽

Hydroelectric Power Plant ◽

Process Time ◽

Hydroelectric Power ◽

Hydro Power ◽

New Energy ◽

Simulator Design ◽

Increasing Demand

Energy consumption in Indonesia is increasing every year, the fulfillment of the energy needed must be overcome. Energy is something that is really needed by anyone, from humans or animals to be able to do something or work. This energy is also abstract, its existence can be felt, but it is difficult to prove. Electricity needs of the community today are a basic need. Electricity usage is almost 24 hours nonstop. To cope with the increasing demand for electricity, it is necessary to utilize natural resources that can be used as new energy resources. The floating hydro power plant simulator is a hydroelectric power plant that utilizes the flow of water from a pump to drive a waterwheel, a device designed to make it easier for students to learn basic electrical engineering and fluid mechanics. The purpose of this design is to design and build a floating hydro power plant and test the tool. The design method used the VDI 2222 method approach, which includes planning, conceptualizing, designing, finishing. The results of the design were according to the method used, namely in the form of a waterwheel simulator design for power plants. The estimated production process time for the manufacture of a floating hydro simulator for cutting 3.9 hours; process of gurdi 3.08 hours; lathe process 1.3 hours; 1.58 hours assembly process; finishing process 2.75 hours = 1.2 days (1 day = 8 hours). The total cost of making the machine was Rp. 2.605,740.00. The driven pulley test results in 65.4 rpm and the driven pulley produced 304 rpm and the output was 12.3 volts.

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Vibration Characteristics of a 50MW Francis Type Hydro Power Plant

Volume 3: Fluid Machinery; Erosion, Slurry, Sedimentation; Experimental, Multiscale, and Numerical Methods for Multiphase Flows; Gas-Liquid, Gas-Solid, and Liquid-Solid Flows; Performance of Multiphase Flow Systems; Micro/Nano-Fluidics ◽

10.1115/fedsm2018-83453 ◽

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.

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The Effect of Unsteady Water Discharge through Dams of Hydroelectric Power Plants on Hydrodynamic Regimes of the Upper Pools of Waterworks

Water ◽

10.3390/w12051336 ◽

2020 ◽

Vol 12 (5) ◽

pp. 1336

Author(s):

Tatyana Lyubimova ◽

Yanina Parshakova ◽

Anatoly Lepikhin ◽

Yury Lyakhin ◽

Alexey Tiunov

Keyword(s):

Power Plant ◽

Flow Rate ◽

Power Plants ◽

Cooling System ◽

Water Discharge ◽

Thermal Power ◽

Water Flow Rate ◽

Hydroelectric Power Plant ◽

Hydrodynamic Regime ◽

Hydroelectric Power

The hydrological regimes of surface water bodies, as a rule, are unsteady. However, accounting for the non-stationarity substantially complicates the hydrodynamic calculations. Because of this, the scenario approach is traditionally used in the calculations. Characteristic scenarios are set with constant hydrological characteristics throughout the time covered in the calculations. This approach is fully justified if the characteristic time of the change in water flow rate is much longer than the calculation time. However, nowadays, tasks are becoming more and more urgent when accounting for flow variability during calculation period becomes crucial. First of all, such a problem arises when assessing the effect of non-stationary water discharge through hydroelectric power plant dams on the hydrodynamic regime of both the upper and lower pools of the reservoir. In the present paper, the effect of the intraday variability of the Kamskaya Hydroelectric Power Plant (Kamskaya HEPP) operation on the peculiarities of the hydrodynamic regimes of the near-dam part of the upper pool of the Kama reservoir is described. The importance of the problem is determined by the location of the main drinking water intake of Perm city and one of the largest thermal power plants (TPP) in Europe, Permskaya TPP, in this part of the reservoir. This TPP uses a direct-flow cooling system from the Kama reservoir, which is very sensitive to the peculiarities of the hydrodynamic regime of the reservoir. The computational experiments based on the combined hydrodynamic models in 2D/3D formulations have shown that the intraday oscillations of the discharge flow rate through the dam of the HEPP have a very significant effect on the hydrodynamic regime of the reservoir in the vicinity of the Permskaya TPP; therefore, these effects must be taken into account when minimizing the risks of thermal effluents entering the intake channel of the Permskaya TPP.

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Evaluation of the Kama Riverbed Deformations and Development of Recommendations on Regulating the Non-metallic Building Materials Extraction in the Lower Reaches of Kamskaya Hydro Power Plant

Water sector of Russia: problems, technologies, management - Методы оценки и механизмы регулирования водопользования в современных условиях ◽

10.35567/1999-4508-2018-6-4 ◽

2018 ◽

Author(s):

Keyword(s):

Power Plant ◽

Power Plants ◽

Building Materials ◽

Large City ◽

Hydrological Regime ◽

Hydroelectric Power Plant ◽

Significant Loss ◽

Hydroelectric Power ◽

Lower Tail ◽

Hydro Power

This article considers issues of regulating the non-metallic building materials extraction in the lower reaches of large hydroelectric power plants. The problem is quite urgent when a large city is located in the lower tail of a hydroelectric power plant and the process of extraction of non-metallic building materials is superimposed on the rather complicated issues of interaction with other water users. The article employs the technique of mutual overlap of bathymetric surveys for the previous periods combined with the analysis of the declared volumes of extraction of non-metallic building materials. A simulating hydrodynamic model of the Votkinsk reservoir has been made, with taking into account the data on the fractional composition of bottom sediments. During the development of the model, we used the software products HEC-RAS v.4.1 and SMS v.11.1. The use of onedimensional and two-dimensional models made it possible to simplify calculations without significant loss of accuracy of calculations. Based on these models, a deformation of the bed was calculated under the standard conditions of the hydrological regime of the Kama and Votkinsk reservoirs. The outcome of the work is recommendations on the allocation of sites in the lower tail of the Kamskaya HPP, where the extraction of non-metallic building materials is not recommended, the areas where production is possible subject to a number of conditions and restrictions concerning the volume of production and areas where production is possible without restrictions.

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Construction and Operation of Small Hydro Power Plants in the Ukrainian Carpathians: New Challenges for Environment

Man and Environment. Issues of Neoecology ◽

10.26565/1992-4224-2020-33-02 ◽

2020 ◽

Keyword(s):

Power Plant ◽

Environmental Impact ◽

Impact Assessment ◽

Environmental Impact Assessment ◽

Hydroelectric Power Plant ◽

Hydroelectric Power Station ◽

Hydroelectric Power ◽

Power Station ◽

Hydro Power ◽

The Impact

Purpose. Analysis of environmental problems and risks associated with the construction and operation of small hydroelectric power facilities (SHEPP) in the Ukrainian Carpathians. Methods. Field studies, statistical, hydrological, hydroecological, analysis and synthesis. Results. Potential environmental risks arising from the construction and operation of SHEPP in the Ukrainian Carpathians are considered. The influence of Yavіrska hydroelectric power station on water discharges in the Stryi river was investigated. The daily water discharges for the two hydraulic sections located above and below the station for low-water (2003) and high-water (2008) years are analyzed. Possible risks in the construction and operation of the hydroelectric power plant for the movement of flood waters, river sediments, the development of riverbed deformations, and others, are indicated. The difference in water discharges between the two hydrological stations is presented, and it is confirmed that in the spring of 2008 and 2003 and the autumn and winter of 2003 and 2008 minimal differences in water consumption were observed as a result of the water retention in the reservoir above the dam of Yavіrska hydro power station for the maximal electrical power generation. The impact of the Yavіrska SHEPP on the biota of the Stryi river during 2014–2015 was analyzed. The obtained results indicate that the main negative factors affecting the communities of river hydrobionts are the creation of reservoir of limnethic conditions in the continuum of the river ecosystem; the accumulation of sediments and dead organic matter on its bottom and banks and the demolition of these sediments on the lower sections of the channel bed; also a decrease of water in the riverbed downstream of the dam after the closure of the floodgates in June. The analysis of the environmental impact assessment reports made it possible to analyze the major environmental threats, which are possible during the building and operation of a small hydroelectric power plant on the Stryi river in the Dovhe village (Drohobych district, Lviv region). Conclusions. To prevent the impact of the projected SHEPP in the Carpathian region it is necessary to prescribe the mechanism of carrying out the environmental impact assessment, to specify the natural-geographical, hydrological and hydro-ecological restrictions on the construction and operation of the hydroelectric power station. It is also necessary to identify sections of mountain (“wild”) rivers with high values of natural landscapes and prohibit the construction of small hydropower facilities.

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