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Register a new userطريقة خطية لحساب الاستطاعة الردية للمولدات التزامنية المربوطة على الشبكة الكهربائية
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Damascus University ورقة بحثية
Publication date
1999
fields
Electrical Power Engineering
and research's language is
العربية
Authors
حسان السويدان( باحث )
Created by
Shamra Editor
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تعرض هذا البحث إلى طريقة جديدة لتحديد الاستطاعة الردية المسموحة للمولدات التزامنيـة المربوطة إلى عقد التوليد في الشبكة الكهربائية، و ذلك اعتماداً على الاستطاعة الفعلية و التوتر و التيار المسموح به لكل من الثابت و الدائر بالإضافة إلى المعطيات الأخرى للمولـد، و يقـدم تحليلاً لمعادلات الثابت و الدائر و للعوامل التي تؤدي دوراً في تحديد قيمتيهما كالقوة المحركـة الكهربائية الداخلية و مميزات اللاحمل للآلة التزامنية و مدى تأثيرها في مركبات التيار التي يتم على أساسها تعيين الحدود المسموحة لتغيّر الاستطاعة الردية [ Qmin , Qmax[ للمولـدات فـي عملية تنظيم التوتر لعقد الشبكة الكهربائية. كما تم في سياق البحث وضع الألغوريتم الـلازم لحساب الاستطاعة الردية المسموحة لكل من المولـد ذي الـدائر الأسـطواني و المولـد ذي الأقطاب البارزة عند قيم مختلفة للتوتر و الاستطاعة الفعلية المستجرة.
No English abstract
References used
Zhang, S. & Irving, M. R., Enhanced Newton - Raphson algorithm for normal, controlled and optimal power flow solutions using column exchange techniques, IEE, England 1994
Yamayee, Z. A.& Bala, J. L., Electromechanical Energy Devices and Power Systems, John Wiley & Sons, Inc. 1994
Nagrath, I. J. & Kathari D. P., Modern Power System Analysis, MG Graw - Hill, Inc. 1982
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In this research the dynamic impact of the interconnection on the rotor
angle Stability for Synchronous Generators in the Syrian Network were
analyzed through the dynamic simulation of the power system and building
of equations is linear and then
use the program PSS / E (Power system
simulation)to resolve and identify determinants of the system and
determine critical fault clearing times of three-phase faults on the 400 KV
addition to identifying the angular revolving generators and thus to verify
the stability whether of its work independently within the Syrian electrical
system or as part of the five countries interconnection project.
The out-of-stability state of synchronous generator which
connected to high voltage network due to the transient
situations which lead us to disconnect the generator causes
finincial and technical problems. Therfore the purpose of this
research i
s to study the stability of synchronous generator
working which connected to high voltage network through the
transient situation.This research present the posibilty of
returning the synchronous generator to synchronous-steadystate
at the late time of the transient state when the load
angle is in the out-of-stability zone through controling the
rotor-excitation and increasing the generator’s electric motive
force.This lead to increase the generator’s maximum power
and to increase the generator’s stability-torque which lead to
return the synchronous generator to synchronous-steadystate
without need of discconecting it from network.Then put
the mathmatical model.
This paper tries to clarify the impact of parallel and serial compensation of power transmission lines on the
performance of distance relays which protect these lines. To this end, power system analysis software
(NEPLAN) will be used for explaining
distance relay behavior in the presence of different parallel or serial
reactive power compensators, with main types of faults that may occur in different locations on the protected
line.
In this paper, Syrian power transmission network is simulated using (NEPLAN) software, and three reactive
power compensators: parallel (STATCOM), serial (TCSC), and unified (UPFC), are used to compensate
reactive power on transmission line. Several simulations, in many cases are carried out to illustrate the
impact of fault type and location on the measured impedance seen by the distance relay.
The objective of identifying the impact of reactive compensators on fault impedance seen by distance relay
(i.e. fault location), is to determine the possible ways to resolve the problem and improve the performance of
transmission line protection.
STATCOM
FACTS
الحاكمة المسافية
المعوضات الردية
المعوض التزامني الستاتيكي
المعوض الموحد
المعوض التسلسلي ذو التحكم الثايرستوري
Distance relay
Static Synchronous Compensator
Unified Power Flow Controller
UPFC
Flexible Alternating Current Transmission
Thyristor Controlled Series Compensator
TCSC
المزيد..
Reactive power compensation in distribution networks is one of the most important economic and
environmental issues in power system studies. In this paper the following points are investigated:
· The characteristics of the most developed equipment
used for reactive power compensation.
· Equations used in ETAP program calculation
· OCP is part of ETAP program which gives us the possibility to determine optimal reactive power
sizing and placement in distribution networks in order to achieve optimal Power loss and distribution
power system enhancement.
· ETAP program is applied on a part of Damascus suburb electrical network which was simulated by its
real parameters and the positive economical and technical results have been clarified.
We, in Al AHLIA Company for RUBBER and Plastic Products - Damascus
by Coordination with Damascus University, prepared a typical blend for local
production of the electric generators elastomeric couplings. That was achieved
after a detailed analysi
s of the properties of the imported couplings. To confirm
our aims, we used the available materiales, equipment and machines in the
company. The coupling moulded by a press machine type CAPANAING
BENEPETO.
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