Subscribe to the gold package and get unlimited access to Shamra Academy
Register a new userEvaluating the performance of electrical networks under different operating conditions
تقييم أداء الشبكات الكهربائية عند شروط تشغيل مختلفة
1261
0 15
0.0
(
0
)
Added by
Tishreen University ورقة بحثية
Publication date
2018
fields
Electrical Power Engineering
and research's language is
العربية
Created by
Shamra Editor
Ask ChatGPT about the research
يتناول البحث دراسة أداء الشبكات الكهربائية لما له من أهمية في استثمار الشبكات الحديثة المعقدة نظراً للتطور الهائل في التجهيزات الكهربائية المنزلية و الصناعية الخ... حيث يساهم في الحصول على صورة متكاملة لأداء النظام الكهربائي في مختلف عمليات التشغيل و الصيانة المتعلقة باستثمار الشبكات الكهربائية .نقترح في هذا البحث إضافة مؤثرات خارجية على شكل معاملات ضبابية لنموذج بتري المقترح بشكل يضمن تحسين المحاكاة التي تقدمها شبكات بتري الضبابية. و قد اخترنا شبكات بتري الضبابية لما لها من إمكانيات هامة في تمثيل أي نوع من أنواع البيانات وفق حاجة المشغل حتى عند التعامل مع بيانات ناقصة أو مجهولة. قمنا بإجراء المحاكاة على شبكة كهربائية لمصفاة نفط و حساب درجات الحقيقة الممثلة لأدائها و مناقشة نتائجها, و توصلنا إلى أن إدخال العوامل المتغيرة عند التشغيل يساهم في زيادة دقة تقييم الشبكة و دعم عمليات اتخاذ القرار.
The target of this study is improving the electrical power systems performance estimation because of its importance in complex modern networks investment that have a lot of advanced equipments. Having a complete representation of the electrical system makes diagnosis thing much accurate and reliable which is used in electrical networks operation and maintenance. We focus in this research on implying different conditions and factors which affect operation and we use fuzzy petri nets for that purpose because of its characteristics in handling with incomplete and uncertainty data . we make our simulation on a real diagram of a refinery to compute its truth degree and discuss the results , we match that adding changing factors at operation contribute in improving networks estimation accuracy and support decisionmaking process .
References used
S. Meliopoulos, D. Taylor, C. Singh, F. Yang, S. W. Kang, and G. Stefopoulos, Comprehensive Power System Reliability Assessment, Power Systems Engineering Research Center, Apr. 2005, Fin. Proj. Rep
Innal, F. Contribution to modelling safety instrumented systems and to assessing their performance – critical analysis of IEC 61508 standard. PhD thesis, University of Bordeaux; 2008
Shinozuka, M., Cheng, T.C., Jin, X., Dong, X., and Penn, D. (2002) “System Performance Analysis of Power Networks”, Proceedings of the Seventh U.S. National Conference on Earthquake Engineering (7NCEE), Boston, Massachusetts, July 21-25
rate research
Read More
This paper presents the effects of enhancing control systems' work conditions on active power filter performance in improving power quality. We will convert the changeable inputs of the controllers into static ones. The high harmonics' amplitude will
be the set-values of the controllers, so the active filter reduces them into zero and then THD will be in its permitted limits.
The demand growing of energy is offset by the weakening of the generating capacity of
power due to the war conditions in Syria. As the windows are the means of optical
communication between inside and outside of the building, the source of the vent
ilation
and the natural lighting, thus having an important effect on the thermal performance of the
building, which affects the consumption of energy.
so the search relied on proposing alternatives for glass to test its thermal performance, the
choice of alternatives was based on the diversity between the values of solar radiation
permeability and the visual light in addition to enumeration of the layers, to which end the
computer simulation method was adopted and the results were compared to a model
Standard (single-transparent).
The results of the comparison showed that the amount of energy saving could be as high as
35% for the face of the sun-exposed facades directly. By reducing the permeability of the
total glass of solar radiation and increasing the permeability of the visible light to increase
the amount of natural illumination, plus the adoption of a Multi-layered glazing system ,
the study recommended that appropriate glass selection must be taken into account in the
early design phase
The performance of some barley genotypes was evaluated under rain-fed
conditions in Dara'a (Izra'a) during two successive growing seasons (2009-2010/
2010-2011) in order to determine the most relevant physiological traits, which
are genetically as
sociated with drought tolerance and grain yield. The trial was
laid out according to the factorial complete randomized block design, with
three replicates. The leaf area index (LAI) was significantly lower in the wild
relatives compared with the varieties and land races. Relative water content
was significantly higher during the second growing season (87.19%) compared
with the first one (71.57%). Solute leakage was significantly lower during the
second growing season (69.50%) compared with the first growing season
(76.49%). It was noticed that the genotypes which have achieved significantly
higher grain yields, could also maintain significantly higher relative water
content in the leaves, (Acsad176, Acsad1182 and Acsad60), and were superior in
maintaining membrane integrity, and leaf area index, indicating the
importance of such traits in improving drought tolerance and maintaining
production capacity.
In this paper, we presented a scientific methodicalness in
very short term load forecasting depends on back propagation
artificial neural networks, and we relied upon real data of Syrian
electrical power system.
In this research, We present a scientific advanced developed
study and keeping up with new studies and technologies of very
short-term electrical load forecasting and applying this study for
electrical load forecasting of basic Syrian electrical p
ower system
by studying this prediction for next four hours according to the
criterion applied in the Syrian Electricity Ministry with ten minutes
intervals ,we call it "Instant electrical load forecasting".
Log in to be able to interact and post comments
comments
Fetching comments
Sign in to be able to follow your search criteria
