Attenuation Factor Estimation of Direct Normal Irradiance Combining Sky Camera Images and Mathematical Models in an Inter-Tropical Area

Nowadays, it is of great interest to know and forecast the solar energy resource that will be constantly available in order to optimize its use. The generation of electrical energy using CSP (concentrated solar power) plants is mostly affected by atmospheric changes. Therefore, forecasting solar irradiance is essential for planning a plant’s operation. Solar irradiance/atmospheric (clouds) interaction studies using satellite and sky images can help to prepare plant operators for solar surface irradiance fluctuations. In this work, we present three methodologies that allow us to estimate direct normal irradiance (DNI). The study was carried out at the Solar Irradiance Observatory (SIO) at the Geophysics Institute (UNAM) in Mexico City using corresponding images obtained with a sky camera and starting from a clear sky model. The multiple linear regression and polynomial regression models as well as the neural networks model designed in the present study, were structured to work under all sky conditions (cloudy, partly cloudy and cloudless), obtaining estimation results with 82% certainty for all sky types.

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Water Vapor Retrievals from Spectral Direct Irradiance Measured with an EKO MS-711 Spectroradiometer—Intercomparison with Other Techniques

Remote Sensing ◽

10.3390/rs13030350 ◽

2021 ◽

Vol 13 (3) ◽

pp. 350

Author(s):

Rosa Delia García ◽

Emilio Cuevas ◽

Victoria Eugenia Cachorro ◽

Omaira E. García ◽

África Barreto ◽

...

Keyword(s):

Water Vapor ◽

Power Plants ◽

Precipitable Water ◽

Satellite System ◽

Infrared Spectrometry ◽

Radiative Balance ◽

Direct Normal Irradiance ◽

Routine Basis ◽

Solar Power Plants ◽

Global Navigation Satellite

Precipitable water vapor retrievals are of major importance for assessing and understanding atmospheric radiative balance and solar radiation resources. On that basis, this study presents the first PWV values measured with a novel EKO MS-711 grating spectroradiometer from direct normal irradiance in the spectral range between 930 and 960 nm at the Izaña Observatory (IZO, Spain) between April and December 2019. The expanded uncertainty of PWV (UPWV) was theoretically evaluated using the Monte-Carlo method, obtaining an averaged value of 0.37 ± 0.11 mm. The estimated uncertainty presents a clear dependence on PWV. For PWV ≤ 5 mm (62% of the data), the mean UPWV is 0.31 ± 0.07 mm, while for PWV > 5 mm (38% of the data) is 0.47 ± 0.08 mm. In addition, the EKO PWV retrievals were comprehensively compared against the PWV measurements from several reference techniques available at IZO, including meteorological radiosondes, Global Navigation Satellite System (GNSS), CIMEL-AERONET sun photometer and Fourier Transform Infrared spectrometry (FTIR). The EKO PWV values closely align with the above mentioned different techniques, providing a mean bias and standard deviation of −0.30 ± 0.89 mm, 0.02 ± 0.68 mm, −0.57 ± 0.68 mm, and 0.33 ± 0.59 mm, with respect to the RS92, GNSS, FTIR and CIMEL-AERONET, respectively. According to the theoretical analysis, MB decreases when comparing values for PWV > 5 mm, leading to a PWV MB between −0.45 mm (EKO vs. FTIR), and 0.11 mm (EKO vs. CIMEL-AERONET). These results confirm that the EKO MS-711 spectroradiometer is precise enough to provide reliable PWV data on a routine basis and, as a result, can complement existing ground-based PWV observations. The implementation of PWV measurements in a spectroradiometer increases the capabilities of these types of instruments to simultaneously obtain key parameters used in certain applications such as monitoring solar power plants performance.

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Pengembangan Sistem Pengaturan Suplai Beban (Ats) Pada Pembangkit Listrik Tenaga Hibrid Berbasiskan Mikrokontroler

Kilat ◽

10.33322/kilat.v10i2.1310 ◽

2021 ◽

Vol 10 (2) ◽

pp. 261-271

Author(s):

Sugeng Purwanto

Keyword(s):

Power Plant ◽

Alternative Energy ◽

Power Plants ◽

Solar Power ◽

Electrical Energy ◽

Solar Power Plant ◽

Solar Panels ◽

Hybrid Power ◽

Solar Power Plants ◽

One Year

ABSTRACT Renewable energy is potential alternative energy to replace the central role of fossil energy which has been going on since the early 20th century. The solar power plant is alternative energy, especially for households and industry, and can be designed as a hybrid power plant consisting of solar panels, batteries, an automatic transfer switch (ATS), and a grid. This research will focus on developing ATS based on a microcontroller. It functions to regulate the load supply automatically from the three sources of electrical energy, like solar panels, batteries, and grid while the microcontroller functions to monitor the transfer of power from the solar power plant to grid and voltage movements in the system so that current and voltage data can be recorded from time to time to improve system reliability, effectiveness, and efficiency of the tool. ATS components consist of MCB, magnetic contactor, timer H3CR, relay, 2000VA inverter, solar charge controller 100A, NodeMCU ESP8266 IoT, and battery 12V 100AH. This research is conducted in one year to produce ATS based on a microcontroller that can automatically regulate the supply of loads from the three sources of electrical energy with a good level of efficiency and stability. Keywords: solar power plants, hybrid power plants, an automatic transfer switch. ABSTRAK Energi baru terbarukan merupakan energi alternatif yang potensial untuk menggantikan peran sentral dari energi fosil yang telah berlangsung sejak awal abad ke 20. PLTS merupakan salah satu energi alternatif penyedia energi listrik untuk rumah tangga dan industri serta dapat dirancang sebagai sistem pembangkit listrik tenaga hibrid (PLTH) yang terdiri dari panel surya, baterai, sistem pengaturan beban atau ATS (automatic transfer switch) dan jaringan PLN. Peneltian difokuskan pada pengembangan sistem ATS berbasiskan mikrokontroler. ATS berfungsi untuk mengatur suplai beban secara otomatis dari ketiga sumber energi listrik yaitu panel surya, baterai dan PLN sedangkan mikrokontroler berfungsi memonitor perpindahan daya dari PLTS ke sumber PLN dan pergerakan tegangan pada sistem sehingga dapat dilakukan pencatatan data arus dan tegangan dari waktu ke waktu sehingga dapat meningkatkan keandalan sistem, efektifitas dan efisiensi alat. Komponen ATS terdiri dari MCB, magnetic contactor, timer H3CR, relay, inverter 2000VA, solar charge controller 100A, NodeMCU ESP8266 IoT, dan baterai 12V 100Ah. Penelitian ini akan dilakukan dalam periode satu tahun menghasilkan ATS berbasiskan mikrokontroler yang dapat mengatur suplai beban secara otomatis dari ketiga sumber energi listrik dengan tingkat efisiensi dan kestabilan yang baik. Tim penelitian ini tediri dari 3 orang dan berasal dari program studi teknik elektro, IT PLN. Kata kunci: pembangkit listrik tenaga surya, pembangkit listrik tenaga hibrid, pengaturan suplai beban.

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Towards the Development of a Low-Cost Irradiance Nowcasting Sky Imager

Applied Sciences ◽

10.3390/app9061131 ◽

2019 ◽

Vol 9 (6) ◽

pp. 1131 ◽

Cited By ~ 2

Author(s):

Luis Valentín ◽

Manuel Peña-Cruz ◽

Daniela Moctezuma ◽

Cesar Peña-Martínez ◽

Carlos Pineda-Arellano ◽

...

Keyword(s):

Solar Irradiance ◽

Power Plants ◽

Solar Power ◽

Detection System ◽

Low Cost ◽

Resource Assessment ◽

The Sun ◽

Robust Detection ◽

Solar Power Plants ◽

Solar Resource

Solar resource assessment is fundamental to reduce the risk in selecting the solar power-plants’ location; also for designing the appropriate solar-energy conversion technology and operating new sources of solar-power generation. Having a reliable methodology for solar irradiance forecasting allows accurately identifying variations in the plant energy production and, as a consequence, determining improvements in energy supply strategies. A new trend for solar resource assessment is based on the analysis of the sky dynamics by processing a set of images of the sky dome. In this paper, a methodology for processing the sky dome images to obtain the position of the Sun is presented; this parameter is relevant to compute the solar irradiance implemented in solar resource assessment. This methodology is based on the implementation of several techniques in order to achieve a combined, fast, and robust detection system for the Sun position regardless of the conditions of the sky, which is a complex task due to the variability of the sky dynamics. Identifying the correct position of the Sun is a critical parameter to project whether, in the presence of clouds, the occlusion of the Sun is occurring, which is essential in short-term solar resource assessment, the so-called irradiance nowcasting. The experimental results confirm that the proposed methodology performs well in the detection of the position of the Sun not only in a clear-sky day, but also in a cloudy one. The proposed methodology is also a reliable tool to cover the dynamics of the sky.

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PENGUJIAN KINERJA PEMBANGKIT LISTRIK TENAGA SURYA UNTUK MENGGERAKKAN POMPA AIR

Jurnal Teknologi Informasi dan Pendidikan ◽

10.24036/tip.v10i3.16 ◽

2018 ◽

Vol 10 (3) ◽

pp. 44-47

Author(s):

Muhammad Anwar ◽

Zulwisli Zulwisli

Keyword(s):

Power Plants ◽

Maximum Yield ◽

Weather Conditions ◽

Electrical Energy ◽

Water Pump ◽

Solar Panels ◽

Promising Alternative ◽

Current Maximum ◽

Solar Power Plants ◽

Water Pumps

Solar Power Plants (PLTS) is a promising alternative in the provision of electrical energy. In this study built PLTS to drive the load of water pump. The performance of water pumps is tested under various weather conditions. Performed measurements of some important quantities such as voltage, current and timing of the use of the PLTS to drive the water pump. Maximum yield with a one-hour charge occurs in sunny weather conditions at 11-12 WIB. A one-hour charge can move a 75 watts water pump for two hours. Solar panels are also directed towards the sun position resulting in a 40% increase in power at 12-13 pm. Keywords : PLTS, Output Voltage, Output Current, Maximum Power.

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A Review on Wind Turbine and Wind Generator Used in WECS

International Journal of Scientific Research in Science Engineering and Technology ◽

10.32628/ijsrset19635 ◽

2019 ◽

pp. 01-04

Author(s):

Nitish Kumar Singh ◽

Dashrath Kumar

Keyword(s):

Energy Source ◽

Wind Energy ◽

Wind Turbine ◽

Power Quality ◽

Power Plants ◽

Harmonic Distortion ◽

Energy Resource ◽

Electrical Energy ◽

Wind Power Plants ◽

Core Energy

The applications of wind energy develop much rapidly than the other renewable resources such as solar, geothermal and so on in the 21st century. It becomes the third core energy resource following non-conventional fuels as oil and chemical. Electrical energy generated by wind power plants is the best ever developing and most promising renewable energy source. The wind is a clean, free and limitless energy source. Wind Energy Generation Systems (WECS) are confront with increasing demands for power quality and harmonic distortion control. With the advance in power electronics technology, the fast growth of variable speed WECS is now witness. However, the power quality still remains an important issue to be addressed thoroughly by researchers. This paper presents a comparative study on grid connected WECS having two different Wind Turbine Generator Systems (WTGS) using DFIG and PMSG.

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Pemanfaatan Pembangkit Listrik Tenaga Surya Pada Gedung Bertingkat

Kilat ◽

10.33322/kilat.v9i1.888 ◽

2020 ◽

Vol 9 (1) ◽

pp. 115-124

Author(s):

Tri Joko Pramono ◽

Erlina Erlina ◽

Zainal Arifin ◽

Jef Saragih

Keyword(s):

Solar Radiation ◽

Power Plants ◽

Solar Power ◽

Electrical Energy ◽

Solar Panel ◽

Performance Ratio ◽

Solar Panels ◽

Aesthetic Value ◽

High Rise ◽

Solar Power Plants

Solar Power Plant is one of the New Renewable Energy power plants. Solar panels can produce unlimited amounts of electrical energy directly taken from the sun, with no rotating parts and no fuel. In this study are optimize solar power plants using hybrid systems with electricity companies and the use of semi-transparent solar panels in high rise buildings to meet the burden of the building. The research will discussed about use of solar power plants using semi-transparent solar panels in multi-storey buildings. The solar panel used for the facade is a semi-transparent solar panel makes its function become two, that is to produce electrical energy as well as glass through which sunlight and can see the view outside the building without reducing the building's aesthetic value. In this study is the value of solar radiation taken from west is the lowest value in November 1.4 Kwh can produce energy PLTS 3,855 Kwh and the highest solar radiation in July amounted to 3.75 Kwh can produce energy PLTS 10.331 Kwh. From the utilization of this PLTS system, Performance Ratio of 85% was obtained using study of 36 panels on the 3rd to 5th floors, this system can be said to feasible.

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Pendampingan Teknis Pemasangan dan Perawatan Pembangkit Listrik Tenaga Surya di Desa Tablolong Nusa Tenggara Timur

Rengganis Jurnal Pengabdian Masyarakat ◽

10.29303/rengganis.v1i2.89 ◽

2021 ◽

Vol 1 (2) ◽

pp. 97-107

Author(s):

I Made Aditya Nugraha ◽

Febi Luthfiani ◽

Grangsang Sotyaramadhani ◽

Muhamad Amril Idrus ◽

Kaminton Tambunan ◽

...

Keyword(s):

Power Plants ◽

Solar Power ◽

Mineral Resources ◽

Electrical Energy ◽

Wilcoxon Test ◽

Electrical System ◽

Activity Assessment ◽

Service Activities ◽

Solar Power Plants ◽

Increasing Demand

The huge potential of solar energy and the increasing demand for electrical energy when fishing at night allow fishing boats in Tablolong Village to use solar power plants as a source of electrical energy. The purpose of this utilization can indirectly overcome the need for electrical energy on fishing boats and reduce the use of fossil energy to turn on generators. Service activities in the form of solar power plants installation and maintenance training are in line with the policies of the Ministry of Marine Affairs and Fisheries Republic of Indonesia and the Ministry of Energy and Mineral Resources Republic of Indonesia to preserve the environment, especially the sea. This activity was attended by 24 shipowners and the installation of 80 Wp solar power plants was carried out on two ships three GT. Based on the results of the activity assessment indicators from the questionnaire that was tested using the Wilcoxon test, it was found that the service activities showed an increase in understanding and skills by the community in the use of solar power plants. This increase is seen from knowledge of the ship's electrical system, knowledge of the ship's electrical operating system, and the ability to repair and maintain the ship's electrical system.

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Satellite-Based Operational Solar Irradiance Forecast for Uruguay's Solar Power Plants

10.1109/urucon53396.2021.9647087 ◽

2021 ◽

Author(s):

Rodrigo Alonso-Suarez ◽

Franco Marchesoni ◽

Liber Dovat ◽

Agustin Laguarda

Keyword(s):

Solar Irradiance ◽

Power Plants ◽

Solar Power ◽

Solar Power Plants ◽

Irradiance Forecast

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Promoting the Development of Concentrating Solar Power in the Middle East and North Africa Regions: Policy and Regulatory Implications

ASME 2012 6th International Conference on Energy Sustainability, Parts A and B ◽

10.1115/es2012-91419 ◽

2012 ◽

Author(s):

William K. Gboney

Keyword(s):

Solar Irradiance ◽

Power Plants ◽

Thermal Power ◽

Energy Resource ◽

Solar Thermal ◽

Solar Thermal Energy ◽

Mena Region ◽

Mena Countries ◽

Energy Technologies ◽

Regulatory Frameworks

It is estimated that within the next 40 years, solar thermal power plants would be capable of supplying more than half of the electricity needs of EUMENA. While solar irradiance differs widely in Europe due to seasonal variations, in the MENA region, there is abundant and continuous solar irradiance. This make the MENA region suitable for establishing CSP plants and exporting the electricity generated to Europe. This has driven many institutions and agencies, including the World Bank and the Desertec Foundation, to propose various schemes to promote the use of CSP systems in the MENA region. The objective of this paper is to examine the existing policy and regulatory frameworks in the MENA countries, identify any barriers and make recommendations on how to surmount these barriers, to increase the scale and scope of utilizing CSPs and other renewable energy technologies (RETs) in the region. The paper concludes by making a number of policy and regulatory recommendations to support utilization of solar thermal energy resource within the MENA region.

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Analisis Pembangkit Listrik Sistem Hybrid Grid Connected Di Villa Peruna Saba, Gianyar – Bali

Jurnal SPEKTRUM ◽

10.24843/spektrum.2019.v06.i02.p01 ◽

2019 ◽

Vol 6 (2) ◽

pp. 1

Author(s):

Gordon Arifin Sinaga ◽

I Made Mataram ◽

Tjok Gede Indra Partha

Keyword(s):

Power Plant ◽

Power Systems ◽

Power Plants ◽

Electrical Energy ◽

Power Source ◽

Natural Processes ◽

Hybrid Power ◽

Hybrid Power Plant ◽

Solar Power Plants ◽

Hybrid Grid

Renewable energy is energy that comes from natural processes that will not be exhausted and sustainable if managed properly. In its use, to maintain the continuity of the availability of electrical energy maximally, it is necessary to combine several types of power plants that are connected to the grid or better known as hybrid grid connected power systems. This research took place at Villa Peruna Saba, Gianyar - Bali which uses a hybrid grid connected power system that combines photovoltaics and generators connected to the grid utilty in supplying electricity loads. The analysis is carried out on the characteristics of the average load, the contribution of each electric power source and the workings of the hybrid grid connected hybrid power plant system. From the analysis, it is known that the contribution of power derived from solar power plants is 561.27 kW or 22.41% in April 2018 and 510.72 kW or 20.71% in May 2018.

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