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Register a new userTechnical Study Of A Generation Electrical Power System By Two Source (Wind-Solar)
الدراسة الفنية لنظام توليد طاقة كهربائية ثنائي المصادر (شمسي- ريحي)
1906
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تعد طاقة الرياح و الشمس من أهم مصادر الطاقة المتجددة بسبب وفرتها و اقتصاديتها, و يمكن الاستفادة من هذين المصدرين للطاقة المتجددة في منطقة قطينة التابعة لمحافظة حمص, لتصميم و بناء نظام طاقة كهربائي ثنائي المصادر (شمسي - ريحي) سيتم الاعتماد على المنحني اليومي لكل من سرعة الرياح و شدة الإشعاع الشمسي للمنطقة المدروسة. تمَّ في هذا البحث دراسة تصميم نظام شمسي ريحي هجين باختيار مكوناته المتوفرة في السوق المحلية لجهة مواصفاتها الاسمية الفنية, و ذلك استناداً على الدراسات الفنية و الاقتصادية, و المعايير العالمية الموافقة. أظهرت النتائج التي حصلنا عليها أن لدينا فائض خلال العام حوالي (1246.7 Kw/Year) لصالح المستهلك, مما يجعل النظام مجدي اقتصاديا من الناحية الاستثمارية, كما اظهر البحث أنه بحاجة لمصدر إضافي لتغذية الحمولة و شحن المدخرات باستطاعة 3360.2 W/Day)) بما يشكل (50.4%) من حجم الحمولة. إضافة إلى النتائج العملية فانه يقدم قاعدة بيانات نظرية سواء للباحث أو للمستثمر في مجال الطاقات المتجددة و خصوصاً لجهة كفاءة اختيار مكونات النظام.
Solar and wind energy is considered as one of the best renewable energy resources because it Available and economical . We can take advantage of these two resources of renewable energy in Katina area in Homs for designing and building a bilateral resources (solar-wind) electric power system, depending on the daily bending of the wind speed and the solar radiation intensity in the studied area. This research studies the design of a hybrid wind and solar system by selecting its components that available in the local market in terms of their nominal, technical specifications, based on the technical and economic studies and the corresponding international standards. The obtained results showed that we have approximately (1246.7 Kw/Year) surplus during the year for the benefit of consumers, which makes the system economically feasible for investment, as explained in research needs an additional resource to feed the load and charge the energy-savings with (3360.2 w/day) that constituting (50.4 %) of the volume of the load in addition to the practical results provides a theoretical database, whether for the researcher or the investor in the field of renewable energies, particularly in terms of the efficiency of selecting the system’s components.
References used
Bourgoine, N. Harvest Energy From a Single Photovoltic Cell. Analog Innovation. Vol. 21, N. 1,1-6
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Summary of subject lines like all components of the electrical power system, for
unexpected breakdowns for multiple reasons. This reduces malfunctions of the reliability
of the system, and is a source of threat to the continuity of power supply. In
order to
prevent these crashes completely is not feasible, you must design an integrated protection
system is being coordinated action among all its organs to identify and separate the
holidays quickly so the damage caused by this failure the system capacity as possible.
Network protection devices are installed to protect it from faults that may occur, and
prevent their spread and protect the system from un normal operating situations resulting
from such faults. protection systems to identify, classify and locate of faults through
systematic analysis of network parameters) voltages/currents, (and then send a signal to
circuit breakers on separation to separate and isolate the infected component.
This thesis took up the study of The effect of wind plants connection on protection system
in distribution networks on behaviour of protection devices used should (over current) and
compare the results with those protections work behavior when connection with regular
generators. we found through modeling and simulation results that a wind station to impose
changes on the structure of power system of protection zones and protection devices in
response to the types of faults occurring and the reason for the delay in the work of these
protections.
Electric energy is very important for sustaining the good life on the planet's surface, especially since civilization has become associated with this type of energy. Solar photovoltaic (PV) is one of the most suitable applications for converting sunl
ight into electrical energy. The appropriate use of solar energy is an important topic for reducing dependence on fossil energy sources that are used to generate electricity, and thus reducing the emissions of greenhouse gases on the planet's surface. Globally, because of environmental conditions, other methods of generating energy being searched for that are less harmful than traditional methods, which rely on a large percentage of them on generating stations that run on fossil fuels. This research discusses electrical power generation using solar energy cells and the effect of these cells on the Syrian electrical grid so that a study of a solar energy farm project provides the data required when working on implementing such a project, and these data are voltage control, load flow, total harmonic distortion coefficient levels. To implement such a project, the model must be designed and we chose the ETAP program for that.
Kouttina is one of the most proper areas in Syria for building wind energy conversion system. This system could be coupled with Syrian electrical grid without expensive cost because of nearing from the grid. But the permanent changes of wind speed wi
th no stable mode, cause different amplitude and frequency voltages differ from Syrian electrical grid amplitude and frequency.
The goal of this research is to design proper wind energy conversion system for Kouttina area and control it, therefore we always obtain constant amplitude and frequency voltages equal to those of Syrian electrical grid for any wind speed and load.
The proper wind turbine with its generator was chosen depending on parameters of probability mathematic function, called Wiebull Function. After that the proper control system was designed for equaling the amplitude and frequency of wind energy conversion system output with those of Syrian electrical grid. The buck -boost converter was controlled by proportional integral (PI) controller to always have DC output voltage equal to (622V). While the inverter controller was achieved by using two PI control loops, the outer loop for voltage control and the inner loop for current control. Though, three phase voltage with RMS phaser value of (220V) and frequency value of (50Hz) is achieved.
To validated the correctness and effectiveness of the proposed system, it was modeled using MATLAB program. The results showed the system ability of obtaining voltage with constant amplitude and frequency and this values do not change with wind speed or load changes.
The integration of various renewable energy sources as well as the liberalization of
electricity markets are established facts in modern electrical power systems. The increased
share of renewable sources within power systems intensifies the supply
variability and
intermittency. Therefore, energy storage is deemed as one of the solutions for stabilizing
the supply of electricity to maintain generation-demand balance and to guarantee
uninterrupted supply of energy to users. In the context of sustainable development and
energy resources depletion, the question of the growth of renewable energy electricity
production is highly linked to the ability to propose new and adapted energy storage
solutions. Recent advancements in hydrogen technologies and renewable energy
applications show promise for economical near to conversion to a hydrogen-based
economy. As the use of hydrogen for the electric utility and transportation sectors. This
paper briefly discusses provides a historical perspective for hydrogen production and the
role of hydrogen as an energy carrier, discusses hydrogen economy, the process of
electrolysis for hydrogen production (especially from solar and wind technologies).
A comprehensive techno/socio/economic study of long term hydrogen based
storage systems in electrical networks is addressed. the excess produced hydrogen during
high generation periods or low demand can be sold either directly to the grid owners or as
filled hydrogen bottles. The affordable use of Hydrogen-based technologies for long term
electricity storage is verified. The results indicate that ample resources exist to produce
Hydrogen from wind and solar power. However, hydrogen prices are highly dependent on
electricity prices.
This paper reports results from a reproduction study in which we repeated the human evaluation of the PASS Dutch-language football report generation system (van der Lee et al., 2017). The work was carried out as part of the ReproGen Shared Task on Re
producibility of Human Evaluations in NLG, in Track A (Paper 1). We aimed to repeat the original study exactly, with the main difference that a different set of evaluators was used. We describe the study design, present the results from the original and the reproduction study, and then compare and analyse the differences between the two sets of results. For the two headline' results of average Fluency and Clarity, we find that in both studies, the system was rated more highly for Clarity than for Fluency, and Clarity had higher standard deviation. Clarity and Fluency ratings were higher, and their standard deviations lower, in the reproduction study than in the original study by substantial margins. Clarity had a higher degree of reproducibility than Fluency, as measured by the coefficient of variation. Data and code are publicly available.
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