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Voltage Stability Improvement Using Voltage Stability Index Optimization
2020 International Conference on Power, Energy and Innovations (ICPEI), 2020Voltage 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 +1 more
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Voltage stability index for online voltage stability assessment
2015 North American Power Symposium (NAPS), 2015This 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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1990 IEEE International Conference on Systems, Man, and Cybernetics Conference Proceedings, 2002
The proximity of power systems to voltage collapse can be calculated for any of the buses using to the theory of bifurcation and multiple solutions to power flow behavior, in terms of system indicators such as real and reactive power. These indicators can be measured to identify voltage collapse.
J.A. Momoh, Y. Zhang
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The proximity of power systems to voltage collapse can be calculated for any of the buses using to the theory of bifurcation and multiple solutions to power flow behavior, in terms of system indicators such as real and reactive power. These indicators can be measured to identify voltage collapse.
J.A. Momoh, Y. Zhang
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TENCON '91. Region 10 International Conference on EC3-Energy, Computer, Communication and Control Systems, 2005
Radial voltage stability poses problems for power system planners and operators. This paper presents methods and aids which can meet the quite distinct needs of both planners and operators, with an emphasis on the practical aspects of the problem. An actual disturbance is described in which the first phase was due to system voltage instability, and ...
D. Sutanto, W.R. Lachs
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Radial voltage stability poses problems for power system planners and operators. This paper presents methods and aids which can meet the quite distinct needs of both planners and operators, with an emphasis on the practical aspects of the problem. An actual disturbance is described in which the first phase was due to system voltage instability, and ...
D. Sutanto, W.R. Lachs
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IET Conference on Renewable Power Generation (RPG 2011), 2011
The use of renewable energy sources is escalating every year. Thus, there is an increase of smaller generating units connected directly to distribution networks close to demand consumption, designing micro-grids. These sources must provide the power quality required to ensure the stability and reliability of the power system.
A.B. Almeida +4 more
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The use of renewable energy sources is escalating every year. Thus, there is an increase of smaller generating units connected directly to distribution networks close to demand consumption, designing micro-grids. These sources must provide the power quality required to ensure the stability and reliability of the power system.
A.B. Almeida +4 more
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Stability of Voltage Regulators
Transactions of the American Institute of Electrical Engineers, 1950THE PRESENCE in many voltage regulator circuits of nonlinear control elements has prevented a complete mathematical treatment of the subject. However, Liapounoff's theory1 ofthe stability of dynamic systems affords a solution to the problem of stability of electric circuits subjected to small displacements from equilibrium.
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Congestion management ensuring voltage stability
2008 IEEE Power and Energy Society General Meeting - Conversion and Delivery of Electrical Energy in the 21st Century, 2006This paper addresses the congestion management problem avoiding offline transmission capacity limits related to stability. These limits on line power flows are replaced by optimal power flow-related constraints that ensure an appropriate level of security, mainly targeting voltage instabilities, which are the most common source of stability problems ...
A.J. Conejo +2 more
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Voltage stability preventive control using a new voltage stability index
2004 International Conference on Power System Technology, 2004. PowerCon 2004., 2005Effective 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 +3 more
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Voltage Stability Enhancement based on Voltage Stability Indices Using FACTS Controllers
2018 International Conference on Engineering Technology and their Applications (IICETA), 2018Load demand increase (especially reactive load) and limited sources of generation has led to operate the power system near its voltage instability point. Consequently, the issue to determine voltage stability before voltage collapse has become an interesting subject for many researchers.
Maan A. Jirjees +2 more
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Voltage stability assessment in power systems using line voltage stability index
Computers & Electrical Engineering, 2018Abstract The stressed operating conditions of transmission systems may lead to voltage collapse with consequent interruption in power supply. Therefore, it is necessary to continuously monitor the voltage stability of power system to avoid voltage collapse.
Saurabh Ratra, Rajive Tiwari, K.R. Niazi
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