نتایج جستجو برای: power system transient

تعداد نتایج: 2680614  

G.D Kedar N.K Lamba V. R Manthena,

This article deals with the determination of temperature distribution, displacement and thermal stresses of a rectangular plate having nonhomogeneous material properties with internal heat generation. The plate is subjected to sectional heating. All the material properties except Poisson’s ratio and density are assumed to be given by a simple power law along x direction. Solution of the two-dim...

2015
Balakrishna Reddy

The growth in the demand of electrical energy is leading to load on the Power system which increases the occurrence of frequent oscillations in the system. The reason for the oscillations is due to the lack of damping torque which is required to dominate the disturbances of Power system. By using FACT devices, such as Unified Power Flow Controller (UPFC) can control power flow, reduce sub-synch...

In this paper a new algorithm is presented for power systems controlled islanding based on constrained spectral clustering. The proposed algorithm minimizes two objective functions of power flow disruption in transmission lines and generation - demand imbalance in islands to ensure transient stability within islands and to minimize necessary actions in reconfiguration of transmission system, ge...

In the past few decades, increasing growth of wind power plants causes different problems for the power quality in the grid. Normal and transient impacts of these units on the power grid clearly indicate the need to improve the quality of the electricity generated by them in the design of such systems. Improving the efficiency of the large-scale wind system is dependent on the control parameter...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی امیرکبیر(پلی تکنیک تهران) - دانشکده مهندسی برق 1387

حفاظت سریع و مطمئن شبکه های قدرت حین بروز خطاها و نیز سایر اغتشاشات شبکه، به منظور حفظ پایداری و محدود کردن خسارات وارده به سیستم یکی از مهم ترین موضوعاتی است که مهندسین برق در بهره برداری از سیستم های قدرت با آن مواجه هستند؛ از این رو مطالعه سیستم های حفاظتی در شبیه سازی ها از اهمیت ویژه ای برخوردار است. از طرف دیگر اثر نوسان کمیت های مختلفِ شبکه حین بروز اغتشاشات مختلف را نیز بایستی در تنظیم...

2015
Ang Li

This paper introduces the working principle and the mathematical model of additional power system excitation control-Power System Stabilizer (PSS). Through established a typical single machine-infinite bus power system simulation model, we simulate the synchronous generator’s transient operational characteristics following a severe disturbance. The simulation results show that the PSS can not o...

Journal: :Electrical and Electronics Engineering: An International Journal 2014

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