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Register a new userThe Effect Of The Transient Case On The Stability Of High- Power Generator In Case Of Disturbances On Electrical Networks
تأثير الحالات العابرة على استقرار المولدات ذات الاستطاعة العالية عند حدوث اضطرابات على الشبكة الكهربائية
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غانم السمان( باحث )
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ان خروج المولد المتواقت المربوط مع شبكة التوتر العالي عن حدود الاستقرار نتيجٌة الحالات العابرة و فصله عن العمل سٌبب مشاكل فنيةٌ و اقتصاديةٌ كبيرٌة. لذلك هدف البحث لدراسة استقرار عمل المولدات المتواقتة المربوطة مع شبكة التوتر العالي عند الحالة العابرة و بياٌن امكانيةٌ العودة لحالة التواقت و الاستقرار عند زمن متأخر للحالة العابرة تكون فيه زاوية الحمولة خارج مجال استقرار عمل المولدة من خلال التحكم بدارة تهييج ملفات الدوار و زيادة القوة المحركة الكهربائية للمولدة و بالتالي زيادة قيمة الاستطاعة الاعظمية للمولد و مايرافقها من زيادة لعزم الاستقرار النوع للمولد تسمح بعودة المولد لحالة التواقت و الاستقرار دون الحاجة لفصله عن الشبكة و وضع الموديل الرياض اللازم.
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 is 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.
References used
A.John Wileyand، Isidor Kerzenbaum"Operration Maintenance of large turbo-gwnerators"IEEE،NEW YORK publication،2004
P.C.SEN -"Principles electrical machines and powerelectronics" second edition، New York -1996
EFANOF SAMALENSKE "Electrical Machines" Moscow، Mir publishers 1988
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