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Fast assessment of regional voltage stability based on WAMS
APCCAS 2008 - 2008 IEEE Asia Pacific Conference on Circuits and Systems, 2008Voltage stability margin of regional network is not a fixed quantity but closely related to operation condition and operation constrains. This paper proposes an effective method to estimate the real-time voltage stability margin based on some locally synchrophasor measurements.
Jinli Zhao +3 more
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On Grid Modeling for Stability Assessment of Droop Voltage Control
2019 IEEE PES Innovative Smart Grid Technologies Europe (ISGT-Europe), 2019Distributed voltage control using $\boldsymbol{Q}(\boldsymbol{U})$ -characteristics is a means to facilitate higher penetrations of decentralized generation. However, stability concerns interfere the wider adoption of this technology. Based on a recent introduction of a robust stability criterion for assessment of droop-controlled inverters, this ...
Friederike Thomas +4 more
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Assessment of voltage stability with new NRS
2008 IEEE 2nd International Power and Energy Conference, 2008This paper presents a fast and accurate static method of assessment of voltage stability and static ATC. NRS (Newton-Raphson-Seydel) is an old method but is fast and accurate. This paper expands NRS method. The idea is applied on 220 buses of Khorasanpsilas network in Iran.
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A voltage stability security assessment method
IEEE Transactions on Power Systems, 1998A voltage stability security assessment method is developed that can identify (i) each region that experiences voltage collapse and (ii) the equipment outages that cause voltage collapse in each of these regions. The method establishes whether the voltage collapse caused by a contingency is due to clogging voltage instability or loss of control voltage
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Assessment of line stability indices in detection of voltage stability status
2017 IEEE International Conference on Environment and Electrical Engineering and 2017 IEEE Industrial and Commercial Power Systems Europe (EEEIC / I&CPS Europe), 2017During the last decade, several line indices have been proposed to assess voltage stability status of power systems based on transmission lines capability. In these methods, it is assumed that both the active and the reactive powers flow in the same direction from the sending bus to the receiving one. Then, the distance from existing operating point to
S. Yari, H. Khoshkhoo
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Load Stability Index for Short-term Voltage Stability Assessment
2019 IEEE Power & Energy Society General Meeting (PESGM), 2019Short-term voltage stability is closely related to the dynamics and stability of load models. After the identification of the load model parameters, the load stability can be analyzed. In this paper, a load model parameter based load stability index is proposed, with desirable properties of case independency, sufficiency and monotonicity. The composite
Xinran Zhang, David J. Hill
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A Comprehensive Method for Online Voltage Stability Assessment
2009 Asia-Pacific Power and Energy Engineering Conference, 2009This paper presents a comprehensive method combined with the techniques such as an improved predictor/corrector, second order index and dichotomy to predict the point of collapse (PoC) constrained by limit-induced bifurcation (LIB), saddle-node bifurcation (SNB) and security limit.
Yu Peng, Wei Zhou, Hui Sun, Jiyan Zou
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Contingency ranking for on-line voltage stability assessment
IEEE Transactions on Power Systems, 2000Voltage stability has become a challenging problem for many power systems. Contingency screening and ranking (CS&R) is one of the important components of on-line voltage stability assessment. The objective of CS&R is to quickly and accurately select a short list of critical contingencies from a large list of potential contingencies and rank them ...
null Zhihong Jia, B. Jeyasurya
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Voltage stability assessment with inclusion of hard limits
IEE Proceedings - Generation, Transmission and Distribution, 1998The work presents new methodologies in order to represent with more accuracy the hard limits of voltage regulators in the modal analysis. These hard limits are treated in the linearisation process by Taylor and Power Series and hyperbolic functions. The procedures required to adapt a conventional load flow in order to include a more realistic behaviour
A.A.P. Lerm +3 more
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Methodology for Computation of Online Voltage Stability Assessment
2018 IEEE International Conference on Environment and Electrical Engineering and 2018 IEEE Industrial and Commercial Power Systems Europe (EEEIC / I&CPS Europe), 2018Online voltage stability analysis is one of the essential element for the robust operation of the power systems. Voltage stability limit is described by the margin of the current operating point to the voltage collapse or saddle-node bifurcation point where the real solution to power flow equations disappears.
Mazhar Ali +2 more
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