نتایج جستجو برای: power system stability

تعداد نتایج: 2807920  

2005
Rohan Lucas

Learning Objectives To be able to perform analysis on power systems with regard to load flow, faults and system stability Outline Syllabus 1. Power Flow Analysis: (8 hrs) Analogue methods of power flow analysis: dc and ac network analysers Digital methods of analysis: Power Flow algorithms and flow charts, analysis using iterative techniques. 2. Power system faults (8 hrs) Causes and effects of...

Banking stability in recent years especially after the financial crisis of 2008-2009, has received more and more attention in policymaking. Although competition is a prerequisite for productivity, technological innovation, institutional development, and financial inclusion, the impact of banking competition on financial stability has been the subject of active debate. in this article, the optim...

2016
I. E. S. Naidu K. R. Sudha

A power system shifts to a state outside the stability boundary encountered by unstable limit cycles, at this point it will not return to the stable operating point. This resembles an increasing oscillatory behaviour in a nonlinear continuous time dynamic systems. Locating the unstable limit cycles and enhancing the stability margin is a difficult task. The effective devices for damping these o...

In power systems, a connected topology is created to increase reliability and economic performance. Increasing dimensions of power systems on the one hand and the need to continuously monitor power systems for secure operation on the other challenge the evaluation of power system security. In such conditions, due to economic conditions and considering the fast growth of consumers in a power sys...

Journal: :journal of operation and automation in power engineering 2007
m. darabian s. jalilzadeh m. azari

this paper focuses on multi-objective designing of multi-machine thyristor controlled series compensator (tcsc) using strength pareto evolutionary algorithm (spea). the tcsc parameters designing problem is converted to an optimization problem with the multi-objective function including the desired damping factor and the desired damping ratio of the power system modes, which is solved by a spea ...

Journal: :journal of advances in computer research 0
mohammad sadegh payam young researchers and elite club, boroujen branch, islamic azad university, boroujen, iran ehsan bijami young researchers and elite club, boroujen branch, islamic azad university, boroujen, iran

this paper presents a new damping controller design based on fuzzy wavelet neural network (fwnn) to damp the multi-machine power system low frequency oscillations. the error between the desired system output and the output of control object is directly utilized to tune the network parameters. the orthogonal least square (ols) algorithm is used to purify the wavelets for each rule and determine ...

2015
Dilip Parmar

This article is focused on the implementation of Fuzzy Logic Controller based Power system Stabilizer to enhanced transient stability of the multi machine system. Power system is very complex as well as highly nonlinear system. At present, there are different control mechanism used to control excitation system of the generator to enhance stability of system. Power system stabilizer (PSS) instal...

2014
Siddharth Gupta Vinay Kumar Tripathi

In some decades, the demand for electrical power has increased but the generation and transmission remained limited due to limited resources and environmental restrictions. The increased demand for electrical power has also increased the complexity in the transmission system. It resulted in the form of the question of stability of power system. Here the stability of power system with possible m...

2012
A. D. Falehi

This study inspects the optimum location of STATCOM device in long transmission line to acquire the maximum power system transient stability improvement. STATCOM is a kind of prominent and effective shunt FACTS device which is used in power system to enhance the power system stability and to regulate the line voltage. When it has been placed at the center point of a transmission line, play a ke...

Hossein Gholizade-Narm Seyed Seraj Hamidi

This paper presents a simple model predictive control (MPC) approach to control the power injection system (PIS) for renewable energy applications. A DC voltage source and a single-phase inverter that is connected to the grid by an LCL filter form the PIS. Grid voltage is considered a disturbance for the system. For eliminating this disturbance, a modified model is proposed. It is usual to ...

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