Results 221 to 230 of about 30,425 (260)

Dynamic simulation of voltage collapse

Conference Papers Power Industry Computer Application Conference, 1990
The problem of voltage collapse is approached by simulation of a power system using a slightly modified transient stability program. A sufficiently complex system with 39 buses and ten generators is used in the simulations. The system is stressed by progressively increasing the system load through a multiplier k.
M.M. Begovic, A.G. Phadke
openaire   +1 more source

Indicators for Voltage Collapse Margins

2010 Asia-Pacific Power and Energy Engineering Conference, 2010
This paper introduces several different indices in order to characterize the voltage stability of a power system. Voltage instability is a phenomenon which often contributes to the development of power system disturbances. Therefore, is very important to know how a power system is close to voltage collapse.
Claudia Reis, F. P. Maciel Barbosa
openaire   +1 more source

Estimation of time to voltage collapse

2016 IEEE 16th International Conference on Environment and Electrical Engineering (EEEIC), 2016
Finding out remained time to voltage instability occurrence is necessary to make a timely decision on corrective actions. This paper presents a novel method for discovering time to long term voltage instability. The method is based on virtually acceleration of OLTCs' operation during time domain simulation in order to realizing detection of long ...
M. Khalilifar, M. Joorabian, S. Gh. Seifosadat, S. M. Shahrtash   +3 more
openaire   +1 more source

Voltage collapse: case studies

Power Quality '98, 2002
This paper presents an analytical approach for the identification of optimal locations and sizes of reactive power compensation required to improve power system voltage stability. The paper also describes reactive compensation planning necessary to avoid a power system collapse similar to that which occurred in Australia's Hydro-Electric Corporation ...
M. Negnevitsky, R.L. Le, M. Piekutowsky
openaire   +1 more source

Voltage instability/collapse - an overview

IEE Colloquium on Voltage Collapse, 1997
Voltage instability and voltage collapse are a frequent concern on heavily stressed power systems. This paper contains an overview of what, in the author's view, are the main aspects to be considered when addressing such problems. Also included in the paper is a review of some of the analytical tools that are available for voltage stability analysis ...
openaire   +1 more source

Dynamic simulation of voltage collapses

IEEE Transactions on Power Systems, 1993
The authors show some examples of dynamic simulations of voltage phenomena using a new general purpose stability program (EUROSTAG) covering in a continuous way the classical fields of transient, mid-term and long-term stability, and also the quasi steady state conditions of a power system.
J. Deuse, M. Stubbe
openaire   +1 more source

Detection of dynamic voltage collapse

IEEE Power Engineering Society Summer Meeting,, 2003
This paper investigates how to detect a dynamic voltage collapse situation. The generator and governor dynamics are considered in the simulation process. An index proposed earlier has been investigated for its applicability to indicate the collapse situation.
G.M. Huang, N.-K.C. Nair
openaire   +1 more source

Analysis of voltage collapse by simulation

IEEE International Symposium on Circuits and Systems, 2003
Voltage collapse was investigated by simulations on a midsize power system with 39 buses and 10 generators. System loads were modeled as constant complex power corrupted with Gaussian noise of a small magnitude. The initial conditions for simulation were determined by singular-value decomposition of the load-flow Jacobian.
M.M. Begovic, A.G. Phadke
openaire   +1 more source

On the evaluation of voltage collapse criteria

IEEE Transactions on Power Systems, 1990
The authors provide an approach that enables a power system operator or planner to evaluate his or her alternatives in selecting a certain voltage collapse criterion. Specifically, the selection of a criterion must guarantee that the risk of making a wrong decision is minimal for any operating point and disturbance.
J.-C. Chow, R. Fischl, H. Yan
openaire   +1 more source

Dynamic Analysis of Voltage Collapse in Power Systems

[1992] Proceedings of the 31st IEEE Conference on Decision and Control, 1995
An analytical framework is presented for the analysis of voltage collapse as a dynamic phenomenon. The approach depends on linking static and dynamic aspects within differential-algebraic models which preserve network structure and facilitate the use of a novel approach to modeling aggregate (dynamic) load. Directions for stability/bifurcation analysis
D.J. Hill, I.A. Hiskens
openaire   +1 more source