scholarly journals Hydrologic Performance Characteristics Variation of Small Scale Hydro Power Plant with Variation of Inflow

2010 ◽  
Vol 43 (4) ◽  
pp. 393-398 ◽  
Author(s):  
Wan-Soon Park ◽  
Chul-Hyung Lee
Keyword(s):  
Power Plant ◽  
Performance Characteristics ◽  
Small Scale ◽  
Hydro Power ◽  
Hydrologic Performance

scholarly journals Analisis Ketidakstabilan Tegangan dan Frekuensi Pada Pembangkit Listrik Tenaga Mikrohidro Soko Kembang

2019 ◽  
Vol 11 (2) ◽  
pp. 129-137
Author(s):  
Nurul Dyah Pratiwi ◽  
Isdiyato Isdiyato
Keyword(s):  
Power Plant ◽  
Electric Power ◽  
Rotational Speed ◽  
Power Plants ◽  
Synchronous Generator ◽  
Frequency Instability ◽  
Small Scale ◽  
Hydro Power ◽  
Central Java ◽  
Hydro Power Plants

Microhydro power plant (MPP) is a small-scale power plant that uses water energy. The process of energy change occurs in a device called a synchronous generator. when the synchronous generator is given an arbitrary load, then the voltage will change. These results cause voltage and frequency instability. This research was conducted to analyze the voltage and frequency instability in MPP. The research method used in this research is descriptive quantitative approach in the village of Soko Kembang, Petungkriyono District, Pekalongan Regency, Central Java. This study provides an overview and explanation of the problems regarding the voltage and frequency instability of Micro Hydro Power Plants. The results of this study are the highest and lowest voltage / frequency instability values, namely 235 volts / 51 Hz and 160 volts / 44 Hz, due to the influence of changes in load current, which can affect the rotational speed of the generator changes, resulting in unstable voltage and frequency generated by the generator, the rotational speed of the generator changes, resulting in unstable voltage and frequency generated by the generator. The solution is  add water power to rotate the shaft of the turbine and generator to be tighter, so that it can reduce the value of the decrease in electric power by losses to the turbine and generator. Large electric power can increase voltage and frequency without having to adjust the load, and the need for improvement of the ELC system in order to get a more effective value of voltage and frequency stability.  

scholarly journals Feasibility Study on a Micro Hydro Power Plant at Coban Jahe Waterfall, Jabung, Malang Regency

2021 ◽  
Vol 6 (1) ◽  
pp. 41-52
Author(s):  
Sudarman Sudarman ◽  
Wahyu Guszolil ◽  
Daryono Daryono ◽  
Muhammad Lukman
Keyword(s):  
Power Plant ◽  
Electric Power ◽  
Feasibility Study ◽  
Financial Analysis ◽  
Water Discharge ◽  
Payback Period ◽  
Small Scale ◽  
Hydro Power ◽  
Tourist Attractions ◽  
Project Life

Micro Hydro Power (MHP) Plant is a small-scale power plant under 100 kW. Generally, MHP is built in a place that the electricity network has not touched. Many waterfalls in Taji Village are only used as tourist attractions. One of them is Coban Jahe waterfall which has a water discharge of 0.60567 m3/s in the dry season. Waterfall in Coban Jahe was used and planned as Micro Hydro Power Plant, it was called as MHP. Potential electric power generated from the MHP Coban Jahe Waterfall is 14.0368 kW with an effective head of 3.4742 m. The results show from the financial analysis, the construction of MHP is quite feasible with NPV of Rp. 45,676,769, BCR of 1.0852, which means it is feasible to be continued, the Payback Period is 9 years which does not exceed the project life, and the IRR obtained is 10,0087% which the projects are feasible and profitable to build.

scholarly journals Electrification Status of Alue Keujrun Village and Kluet River Hydrokinetic Energy Potential: A Survey Report

2021 ◽  
Vol 5 (2) ◽  
pp. 201
Author(s):  
Muhammad Ikhsan ◽  
Nuzuli Fitriadi
Keyword(s):  
Power Plant ◽  
Power Plants ◽  
River Flow ◽  
Low Voltage ◽  
Electric Power System ◽  
Small Scale ◽  
Energy Potential ◽  
Hydro Power ◽  
Survey Report ◽  
The Village

This paper provides survey results of an electricity system that has been carried out from isolated village of Alue Keujrun, South Aceh, Indonesia. The village has a central photovoltaic power plant and a micro hydro power plant. Various problems in the field such as operation errors, lack of maintenance of the electric power system, low voltage and frequency have been found. Power plant operators have also never received any formal training from any institution. The village is located next to the Kluet river which has a very large potential to become a hydrokinetic power plant energy source. Therefore the Kluet river flow velocity was also measured during the survey and described within this paper. Based on the interviews results with local operators, the village power plant does not have an operating permit. Thus, we consider that it is important to review the types of permits required to establish a power plant in Indonesia, including small-scale power plants.

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 OPTIMASI PENEMPATAN DISTRIBUTED GENERATION PADA PENYULANG GOA LAWAH MENGGUNAKAN METODE PARTICLE SWARM OPTIMIZATION (PSO)

2018 ◽  
Vol 5 (2) ◽  
pp. 74
Author(s):  
I Made Bagas Sastra Negara ◽  
Ngakan Putu Satriya Utama ◽  
Cok Gede Indra Partha
Keyword(s):  
Particle Swarm Optimization ◽  
Power Plant ◽  
Distributed Generation ◽  
Power Loss ◽  
Particle Swarm ◽  
Small Scale ◽  
Swarm Optimization ◽  
Hydro Power ◽  
Distributed Generation Placement

Distributed Generation (DG) is a small-scale power plant located close to the center of load. Goa Lawah feeder is a broadcast that is close to the potential of DG namely the Mini Hydro Power Plant on the Unda River in Klungkung Regency. In this research the optimization of Distributed Generation placement to Goa Lawah feeder. Optimization of Distributed Generation placement aims to reduce the value of loss of power that exist in the feeder Goa Lawah. The results of the research obtained at the point of bus 123 by Distributed Generation placement using Particle Swarm Optimization (PSO) method, with power loss 41 kW (44%). The initial loss before the Distributed Generation interconnection of 72 kW after the Distributed Generation interconnection to 31 kW.

scholarly journals Small Scale Hydroelectric Power Plants in Norway. Some Microeconomic and Environmental Considerations

2017 ◽  
Author(s):  
Johannes Idsø
Keyword(s):  
Power Plant ◽  
Property Rights ◽  
Power Plants ◽  
Certainty Equivalent ◽  
Small Scale ◽  
Hydroelectric Power ◽  
Hydro Power ◽  
Von Neumann ◽  
Hydroelectric Power Plants ◽  
The One

The development of small scale hydroelectric power plants in Norway is determined by natural conditions, policies, attitudes and property rights. The owner of the river is the central decision maker. It is he who decides whether he will develop the power plant himself, Whether he wants to enter into a contract with an external investor and let him develop the power plant, whether he will sell his property rights or postpone the decisions. All available choices will involve risk. In order for him to make the best choice he must find the certainty equivalent to each of the choices and choose the one with the highest certainty equivalent. This is the first time the utility theory of John von Neumann and Oskar Morgenstern has been applied to decision makers in the hydro power industry in Norway.

scholarly journals Analisis Potensi Pengembangan Pembangkit Listrik Tenaga Mikrohidro Di Kabupaten Bone Bolango

2018 ◽  
Vol 1 (1) ◽  
pp. 1
Author(s):  
Nurhayati Doda ◽  
Herdi Mohammad
Keyword(s):  
Power Plant ◽  
Fossil Fuels ◽  
Human Life ◽  
Electrical Energy ◽  
Research Area ◽  
Small Scale ◽  
Hydro Power ◽  
Potential Development ◽  
Sufficient Magnitude ◽  
A Current

Energy is a major need in human life, but along with the population growth will be the availability of electrical energy especially that from fossil fuels are being reduced and insufficient for the needs of small-scale electric power listrik.Pembangkit potential as an alternative to fossil energy sources namely renewable micro hydro power plant availability of electricity in remote villages in the district of Bone Bolango is alarming, so it was done research on Analysis of Potential Development of micro hydro power plant (MHP) in Bone regency Bolango. This study aims to provide an overview and preliminary information on the potential of hydropower as a basis for planning and development of micro hydro power plant. In this research will be outlined potential sites for the development of MHP with power potential, specifications turbindan civilian buildings. Measurement of power was awakened by the amount of streamflow in Mongiilo Desa Ulu Subdistrict Bolango Bone Bolango District. Debit analyzed based on observation of the flow rate by using a current meter. From the analysis of the amount of power potential in getting aroused in the research area of 289,935Kw with ideal flow 12.14 m3 / sec, the average efficiency of 65% with the plan fell 3.75 m high. This power is sufficient magnitude elektrifitas needs of residents in the study area that is equal to 65kW.

scholarly journals Electronic Load Controller based on Dimmer Circuit and Stepper Motor for 5 kW Micro-Hydro Power Plant

2022 ◽  
Vol 19 (2) ◽  
pp. 2023
Author(s):  
Abdul Hafid ◽  
Andi Faharuddin ◽  
Abdul Rajab
Keyword(s):  
Power Plant ◽  
Low Power ◽  
Stepper Motor ◽  
Small Scale ◽  
Hydro Power ◽  
Variable Resistor ◽  
Full Load ◽  
South Sulawesi ◽  
Electronic Load ◽  
Load Tolerance

This paper presents the results of research on a new schematic generator load controller simulation, namely an electronic load controller based on a dimmer circuit and a stepper motor for a small-scale 5 kW micro-hydro. The load controller is built from a dimmer circuit and a stepper motor with program control using Matlab software, and the PPI 8255 interface device. Using a dimmer circuit built from diac, triac, a variable resistor (pot), and capacitor components. As well as using a 28BYJ-48 stepper motor. Simulation is made to determine the performance of the load controller in controlling the distribution of power to the ballast load when the generator supplies power to consumers less than the full load of the generator. By using the simulation data of 45 variations of the consumer load sample, the result is that there are only 4 samples where the load controller is not working well. For the 4 samples, the generator was loaded beyond its full load tolerance limit (full load tolerance of 5kW ± 5 %). Overall, based on the simulation results, it can be said that the generator load controllers tested in this study have good performance. HIGHLIGHTS Methods and power electronic configurations used in electronic load controllers for micro-hydropower plants from 1980 until now. In the future, the use of low-power micro hydro and pico hydro power plants is also in great demand, especially for rural areas The utilization of micro-hydro in Indonesia, especially low-power micro-hydro, has been utilized by the community in Bulukumba Regency, South Sulawesi Province. A 5 kW generator has been operated in Katimbang Village, Borong Rappoa District, Kindang Regency, Bulukumba Regency, South Sulawesi Province to distribute electrical energy to 15 households This research proposes a new electronic load control scheme for a simple and inexpensive 5 kW micro-hydro power plant, namely a dimmer circuit and stepper motor-based generator load controller. With the consideration that the main components that make up this controller are not expensive GRAPHICAL ABSTRACT

Optimization of Water Falling Points in Micro Hydro Power Plants

2021 ◽  
Vol 3 (1) ◽  
pp. 93
Author(s):  
Heru Hermawan ◽  
Sunardi Sunardi
Keyword(s):  
Rural Communities ◽  
Power Plant ◽  
Power Plants ◽  
Negative Impact ◽  
Water Drop ◽  
Water Discharge ◽  
Tangential Force ◽  
Small Scale ◽  
Alternative Source ◽  
Hydro Power

Micro Hydro Power Plant (PLTMH) is an alternative source of electrical energy for the community. PLTMH provides many benefits, especially for rural communities throughout Indonesia. When other energy sources start to run low and have a negative impact, water becomes a very important source of energy because it can be used as an energy source. PLTMH is a small-scale power plant that uses hydropower as its driving force such as irrigation channels, rivers, or natural waterfalls by utilizing the waterfall height (head) and the amount of water discharge. In rivers, there is the potential for sufficient water availability throughout the year, reliable discharge, suitable contours, and has been used for MHP. However, this river has decreased the electrical power it produces. Therefore, in this PLTMH river, it is necessary to analyze and recalculate the electric power generated by optimizing the water drop point, using an 8-inch pipe to produce a tangential force of 814.28 N, then using a 3-inch pipe to produce a tangential force of 100, 62 N and using a 2-inch pipe produces a tangential force of 25.37 N.

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