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Simultaneous Local Identification of Thévenin Equivalent Impedances in a Distribution System
IEEE Transactions on Power SystemsAdvances in grid analytics are enabling significant operation improvement by identification of Thévenin equivalent system. Thévenin impedance is particularly useful for stability analysis in systems facing influx of distributed energy resources (DERs ...
Alireza Raghami +3 more
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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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Thévenin Equivalent Representation of Meshed Grids for IBR Dynamic Phenomena Replication
IEEE Power & Energy Society General MeetingSingle inverter-based resource (IBR) infinite-bus representation has been adopted for real-world event analysis and replication by the senior authors. In particular, for the 2021 Texas Odessa event, adopting a Thévenin equivalent representation for the ...
R. Kar +3 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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Realtime Thévenin Equivalent Impedance at a PCC in the Italian Power Grid
2020 International SAUPEC/RobMech/PRASA Conference, 2020The increase of Distributed Energy Resources (DER) in distribution networks has underlined the need for new strategies to optimally operate DERs by increasing efficiency in generation and distribution of power. Optimal Power Injection enabled by Thévenin
G. H. Gabriels, D. Oyedokun, S. Ruggeri
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IEEE Transactions on Power Systems, 2019
Real-time tracking and identification of Thevenin equivalent parameters is crucial for voltage stability online monitoring of large power grids. An online parameter identification method based on wide-area measurements and nodal analysis is proposed in ...
Zhihao Yun, Xinhui Cui, Kaigang Ma
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Real-time tracking and identification of Thevenin equivalent parameters is crucial for voltage stability online monitoring of large power grids. An online parameter identification method based on wide-area measurements and nodal analysis is proposed in ...
Zhihao Yun, Xinhui Cui, Kaigang Ma
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Detection and Classification of Faults in Solar PV Array Using Thevenin Equivalent Resistance
IEEE Journal of Photovoltaics, 2020Detecting fault in a solar photovoltaic (PV) array in the presence of protection diodes (bypass and reverse blocking) is complex. This is because variations in the electrical parameters (due to a fault) are often not distinguishable from one type of ...
B. K. Karmakar, A. Pradhan
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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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Application of Python Parallel Computing in Online Identification of Thevenin Equivalent Parameters
2020 IEEE 3rd Student Conference on Electrical Machines and Systems (SCEMS), 2020The premise of analysing static voltage stability of large power grids online is identifying Thevenin equivalent parameters rapidly and accurately. And based on the current reaearch in this field, this paper analyses its formation mechanism and the ...
Xinyuan Meng, Wen Tao, Kaigang Ma
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