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Performance Evaluation of Voltage Stability Indices for a Static Voltage Collapse Prediction
2020 IEEE PES/IAS PowerAfrica, 2020The frequent happenings of voltage collapse in a power system in the recent time as a result of continuous increase in power demand has been a concern and has posed a great threat to power system utilities. In this paper, to predict a voltage collapse bus, an approach named critical bus voltage stability index (CBVSI) which is based on the voltage ...
Isaiah G. Adebayo, Yanxia Sun
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Voltage stability as affected by static load characteristics
IEE Proceedings C Generation, Transmission and Distribution, 1993Voltage stability is analysed as a dynamic phenomenon associated with the excitation field dynamics of synchronous machines. It is shown that, for constant impedance loads, a single machine powersystem is voltage stable for all reasonable operating conditions.
C.D. Vournas, N.D. Krassas
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PEV Load and Its Impact on Static Voltage Stability
2014A global resurgence of electric vehicle has taken place as a sustainable alternative to fossil fuel dependent transportation. As a result, the new plug-in electric vehicle (PEV) charging load is emerging into power networks. Even though the environmental and economic benefits of electrified transportation are very much apparent, its impacts on power ...
Dharmakeerthi, C. H., Mithulananthan, N.
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The Effect of OLTC on Static Voltage Stability Limit
2011 Asia-Pacific Power and Energy Engineering Conference, 2011Voltage stability problems caused by on-load Tap Changer (OLTC) action and load dynamic characteristics are more complicated and not easy to grasp. By means of the P max - Φ and V cr - Φ curves, this paper analyses the influence of OLTC on the static voltage stability limit, and studies the critical variable ratio corresponding to the OLTC adjustment.
Jundong Duan, Shanshan Zhu
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Improvement of power system stability using static voltage stabilizer
Electrical Engineering in Japan, 1979The effects of the static voltage stabilizer on the stability of a bulk power transmission line were investigated. Two types of stabilizer are considered. One is a saturable-reactor type and the other is a thyristor-controlled reactor type. Control method and transient behavior are discussed in the case of a thyristor-controlled reactor type.
Ikuo Kurihara +4 more
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Optimal placement of TCSC for improvement of static voltage stability
2015 5th Nirma University International Conference on Engineering (NUiCONE), 2015Voltage instability in power system is a major issue in electrical power system operation. Voltage instability occurs mainly due to deficit of reactive power at load buses during some contingency or under increased loading condition. Flexible AC Transmission System (FACTS) devices can improve the voltage stability with reduction of losses and ...
Aesha Sheth, C. D. Kotwal, Shital Pujara
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Static Voltage Stability Assessment Considering Harmonic Effects
2019 IEEE 3rd Conference on Energy Internet and Energy System Integration (EI2), 2019As the degree of power electronics in power systems continues increasing, the harmonic content of the system continues to increase as well. In order to study the influence of harmonics on the static voltage stability of power system, a static voltage stability analysis method considering the influence of harmonics is proposed.
Mengnan Gao +4 more
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Load modelling in static voltage stability indices calculation
European Transactions on Electrical Power, 1999AbstractThis paper is concerned with load modelling for static voltage stability indices calculation. Static voltage stability is closely related to the maximum active and reactive power flow a network can transmit to load or from generator. A two‐bus system is used to show that the assessment index may or may not indicate the maximum depending on the ...
R. B. Prada, J. O. R. Dos Santos
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Static voltage stability enhancement using FACTS controller
2016 International Conference on Emerging Technological Trends (ICETT), 2016The modern day power system is faced with challenges of voltage instability and has become a great concern to the power system industries. In this work, we proposed a technique of the Network structural Characteristics Participation Factor (NSCPF) to identify the most critical node where reactive power compensator can be placed for voltage stability ...
Isaiah G. Adebayo +3 more
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Static voltage stability analysis of eskom eastern grid
2016 IEEE International Conference on Renewable Energy Research and Applications (ICRERA), 2016High voltage direct current (HVDC) transmission offers several operation advantages over high voltage alternating current (HVAC) transmission systems. HVDC transmission lines have no frequency and hence minimal problems of harmonics, oscillations or transients; they actually damp out transients with effective controllers. Precise and fast power control
Oluwafemi E. Oni +2 more
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