Results 251 to 260 of about 7,162,080 (290)

Voltage Stability Improvement Using Voltage Stability Index Optimization

2020 International Conference on Power, Energy and Innovations (ICPEI), 2020
Voltage stability improvement using line voltage stability index based on optimal power flow (OPF) in power systems is presented in this work. Line voltage stability index (LVSI) traditionally adopted to identify the most critical line in the system where its value is in the range of 0 (no load) and 1 (voltage collapse) has been applied as part of the ...
Sirote Khunkitti, Suttichai Premrudeepreechacharn   +1 more
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Voltage stability index for online voltage stability assessment

2015 North American Power Symposium (NAPS), 2015
This paper proposes a voltage stability index to predict voltage collapse in power system. The index is based on maximum loading capability of the bus combined with a thevenin equivalent method for the aggregated representation. The technique is applied to transmission test system. Using thevenin equivalent calculated by fast load flow or PMU data, the
Rabindra Maharjan, Sukumar Kamalasadan
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Probabilistic voltage stability indexes

IEE Proceedings C Generation, Transmission and Distribution, 1991
A probabilistic voltage stability index is proposed: the expected voltage instability proximity. To account for the system elements' forced outages, elements are represented by a two-state model. The resulting statespace is truncated by using a practical technique.
T.A.M. Sharaf, G.J. Berg
openaire   +1 more source

Voltage stability preventive control using a new voltage stability index

2004 International Conference on Power System Technology, 2004. PowerCon 2004., 2005
Effective voltage control schemes have been brought to attention in a considerable number of studies, as power system loads are located farther away from power plants and reactive power losses have tended to increase due to the heavier power flow with high load growth and long distance transmission.
T. Esaka, Y. Kataoka, T. Ohtah, S. Iwamoto   +3 more
openaire   +1 more source

A New Voltage Stability Index Considering Voltage Limits

2006 IEEE PES Power Systems Conference and Exposition, 2006
Recently, concerns over voltage instability phenomena have been increasing, because significant voltage drops are regarded crucial in stable operations. Thus, effective voltage control schemes using voltage stability indices have been brought to attention in a considerable number of studies.
Y. Kataoka, M. Watanabe, S. Iwamoto
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

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

Local Voltage-Stability Index Using Tellegen's Theorem

IEEE Transactions on Power Systems, 2006
Summary form only given. In the paper, the Tellegen's theorem and adjoint networks are used to derive a new, local voltage-stability index. The new approach makes it possible to determine the Thevenin's parameters in a different way than adaptive curve-fitting techniques, from two consecutive phasor measurements.
Ivan Smon, Gregor Verbic, Ferdinand Gubina   +2 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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A voltage stability index for radial distribution networks

2007 42nd International Universities Power Engineering Conference, 2007
This paper presents a voltage stability index for identifying the most sensitive bus to the voltage collapse in the radial distribution networks. The developed index is based on the transferred active and reactive power of the distribution line. The performance of the index is tested on different loading conditions for different load models and ...
U. Eminoglu, M. H. Hocaoglu
openaire   +1 more source