Results 221 to 230 of about 58,177 (263)

On-line voltage stability based contingency ranking using fast voltage stability index (FVSI)

IEEE/PES Transmission and Distribution Conference and Exhibition, 2003
Voltage instability is one phenomenon that could happen in a power system due to its stressed condition. The result would be the occurrence of voltage collapse which leads to total blackout to the whole system. Therefore voltage collapse prediction is important in power system planning and operation so that the occurrence of voltage collapse due to ...
I. Musirin, T.K.A. Rahman
openaire   +1 more source

Long term voltage stability thevenin index using voltage locus method

2014 IEEE PES General Meeting | Conference & Exposition, 2014
Monitoring long term voltage stability of the power grid is necessary to ensure the secure operation of the system. In this paper, the voltage locus of the load phasor as a function of the load increase is studied is studied from a geometric perspective.
Amarsagar Reddy Ramapuram Matavalam, Venkataramana Ajjarapu   +1 more
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Voltage stability index of radial Distribution network

2011 International Conference on Emerging Trends in Electrical and Computer Technology, 2011
Distribution networks experience distinct change from a low to high load level every day. Hence, a major concern in power distribution networks, which have surfaced fairly, recently is the problem of voltage stability. In this paper in the first phase of work an attempt has been made for performing voltage stability analysis of electrical power ...
null Avani Jigar Pujara, Geetanjali Vaidya   +1 more
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Effectiveness analysis of voltage stability margin index

POWERCON '98. 1998 International Conference on Power System Technology. Proceedings (Cat. No.98EX151), 2002
The concept of the validity of the power system voltage stability margin index (VSMI) and its definition are presented. For a simple system, a comprehensive analysis for the validity of VSMI is given. For complex systems, the validity of VSMI is illustrated by examples. The linearity of VSMI is also evaluated.
null Duan Xianzhong, null Jing Zhaoxia, null Bao Lixin, null Wang Xinghua, null He Yangzan   +4 more
openaire   +1 more source

A New Line Voltage Stability Index (NLVSI) For Voltage Stability Assessment

2019
Power system is probably one of the most complex dynamical systems. In these systems, active and reactive power demand is increasing day by day, other way it can be said that the stress on these systems is increasing. Under these stressed conditions, they are operating at the stability limits to meet their load demand.
Trinadha Burle, V. V. S. Bhaskara Reddy Chintapalli, Phanindra Thota   +2 more
openaire   +1 more source

Synchrophasor-Based Real-Time Voltage Stability Index

2006 IEEE PES Power Systems Conference and Exposition, 2006
This paper presents a new online voltage stability index (VSI) that predicts the power system steady-state voltage stability limit. Starting with deriving a method to predict three types of maximum transferable power (real power, reactive power, and apparent power) of a single-source power system, a new VSI based on the calculated load margins is ...
Yanfeng Gong, Noel Schulz
openaire   +1 more source

Fast calculation of a voltage stability index

IEEE Transactions on Power Systems, 1992
The minimum singular value of the power flow Jacobian matrix has been used as a static voltage stability index, indicating the distance between the studied operating point and the steady-state voltage stability limit. A fast method to calculate the minimum singular value and the corresponding (left and right) singular vectors is presented.
Hill, DJ, Andersson, G, Smed, T, Lof, PA
openaire   +3 more sources

Novel fast voltage stability index (FVSI) for voltage stability analysis in power transmission system

Student Conference on Research and Development, 2003
Since a couple of decades ago, voltage stability assessment has received increasing attention due to the complexity of power systems. With the increase in power demand and limited power sources has caused the system to operate at its maximum capacity. Therefore, a study that is able to determine the maximum capacity limit before voltage collapse must ...
I. Musirin, T.K. Abdul Rahman
openaire   +1 more source

A new node voltage stability index based on local voltage phasors

Electric Power Systems Research, 2009
The paper proposes an equivalent system model (ESM), which includes effects of both local network and system outside the local network. A new node voltage stability index called the equivalent node voltage collapse index (ENVCI), which is based on ESM and uses only local voltage phasors, is presented.
Yang Wang, Wenyuan Li, Jiping Lu
openaire   +1 more source

Optimal reactive power dispatch for improving voltage stability margin using a local voltage stability index

Energy Conversion and Management, 2012
Abstract Management of reactive power resources is vital for stable and secure operation of power systems in the view point of voltage stability. This paper deals with the management of on-load tap changers (OLTCs) and dynamic VAR sources (including synchronous generators, synchronous condensers, and shunt reactive power compensators) to improve ...
Abbas Rabiee, Maziar Vanouni, Mostafa Parniani   +2 more
openaire   +1 more source