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Circuit diagnosis and Thevenin equivalents
Proceedings of the IEEE, 1982Roytman and Swamy have used the properties of orthonormal excitations to establish one method of circuit diagnosis. In this letter the method is extended to determine the driving-point or Thevenin equivalent impedance for each node pair.
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Fault locating estimation using thevenin equivalent in power systems
2010 Conference Proceedings IPEC, 2010This paper develops a method to acquire the relationships between the real fault distance and the varying Thevenin equivalent impedance. Multiple measurements have been taken from simulations of the Taiwan power system and their Thevenin equivalent have been calculated.
Matt C.-Y. Chuang +2 more
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On Thevenin's and Norton's Equivalent Circuits
IEEE Transactions on Education, 1982This paper provides a good look at the concept of equivalence in general and at Thevenin's and Norton's theorems in particular. The ain is to investigate simple, general, and comprehensive ways to present and prove these theorems. It is shown that linearity and the absence of external coupling should not be conditions for Thevenin's and Norton's ...
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Non-Intrusive Estimation of Single-Port Thevenin Equivalents in AC Grids
IEEE Transactions on Power Delivery, 2021This paper deals with the estimation of parameters of a Thevenin equivalent in an AC grid. We consider the practically relevant case of measurements coming from a grid-connected inverter. Our focus is on non-intrusive measurements, as we postulate and later experimentally observe transients that occur in normal operation as the primary source of ...
Slobodan N. Vukosavic +1 more
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On-line estimation of thevenin equivalent with varying system states
2008 IEEE Power and Energy Society General Meeting - Conversion and Delivery of Electrical Energy in the 21st Century, 2008For power system, Thevenin equivalent at a node can represent the aggregation of systempsilas operation conditions, e.g. generator terminal voltages, load powers, and line impedances, seen from a bus. estimation of Thevenin equivalent can be challenging given that active controls in power systems vary the systempsilas states with time.
S.-J. Steven Tsai, K.-H. Wong
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General treatment to calculate the Thevenin equivalent circuit
American Journal of Physics, 1978The method to calculate the Thevenin (or Norton) equivalent circuit of networks containing controlled current and/or voltage sources is identical to the method used with purely passive circuits if the fundamental concept of equivalence of networks is properly understood.
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Thevenin equivalent parameter tracking for on-line voltage stability assessment
2015 IEEE Innovative Smart Grid Technologies - Asia (ISGT ASIA), 2015This paper demonstrated a method for online voltage stability assessment of a load bus using bus phasor measurements. The power system is represented by Thevenin equivalent model, which parameters are estimated by applying new methods based on discrete Kalman filter (DKF) and unscented Kalman filter (UKF). Voltage stability index is calculated based on
Mohammad Nazrul Islam +1 more
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Detailed Modelling Procedure for Lithium-ion Battery Using Thevenin Equivalent
2019 IEEE International Conference on Electrical, Computer and Communication Technologies (ICECCT), 2019This paper presents a comprehensive procedure for modelling of Lithium-ion batteries. The proposed modelling procedure adopts Thevenin equivalent circuit of both first and second orders in order to incorporate the dynamic characteristics of Li-ion batteries.
Lokesh Gurjer +2 more
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One-step Evaluation of the Thevenin Equivalent Circuit
IETE Journal of Education, 2003In the usual procedure to determine the Thevenin equivalent of a network N, two separate analyses are needed, one for finding the open-circuit voltage and the other for the evaluation of the Thevenin impedance. This note outlines a method to accomplish this task after the analysis of a single network.
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A comparative study of measurement-based Thevenin equivalents identification methods
2014 North American Power Symposium (NAPS), 2014With the development of phasor measurement units (PMU), real-time voltage stability monitoring techniques using phasor measurements have been widely discussed in the past decade. For various measurement-based techniques, the fundamental idea behind them is to identify the Thevenin equivalents (TE) of the outer system seen from the nodes/areas of ...
Haoyu Yuan, Fangxing Li
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