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Content Provider | IET Digital Library |
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Author | Meyer, Nicolai Lorenz Bobtsov, Alexey Ortega, Romeo Nikolaev, Nikolay Schiffer, Johannes |
Abstract | The authors propose a novel decentralised mixed algebraic and dynamic state observation method for multi-machine power systems with unknown inputs and equipped with phasor measurement units (PMUs). More specifically, they prove that for the third-order flux-decay model of a synchronous generator, the local PMU measurements provide enough information to reconstruct algebraically the load angle and quadrature-axis internal voltage. Due to the algebraic structure, a high numerical efficiency is achieved, which makes the method applicable to large-scale power systems. Also, they prove that the relative shaft speed can be globally estimated combining a classical immersion and invariance observer with – the recently introduced – dynamic regressor extension and mixing parameter estimator. This adaptive observer ensures global convergence under weak excitation assumptions that are verified in applications. The proposed method neither requires the measurement of exogenous input signals such as the field voltage and the mechanical torque nor the knowledge of mechanical subsystem parameters. |
Starting Page | 6267 |
Ending Page | 6275 |
Page Count | 9 |
ISSN | 17518687 |
Volume Number | 14 |
e-ISSN | 17518695 |
Issue Number | Issue 25, Dec (2020) |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2020.1275 |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-gtd/14/25 |
Journal | IET Generation, Transmission & Distribution |
Publisher Date | 2020-11-18 |
Access Restriction | Open |
Rights Holder | © The Institution of Engineering and Technology |
Subject Keyword | Adaptive Observer Algebraic Structure Classical Immersion Control of Electric Power System Control System Analysis Decentralised Control Dynamic State Observation Method Invariance Observer Large-scale Power System Local PMU Measurement Mechanical Component Mixed Algebraic Mixing Parameter Estimator Modelling And Identification Multimachine Power System Multivariable Control System Nonlinear Control System Observers Parameter Estimation Phasor Measurement Phasor Measurement Unit PMU-based Power System Control Power System Measurement Power System Measurement And Metering Power System Stability Recently Introduced – Dynamic Regressor Regression Analysis Shafts Simulation Stability in Control Theory Synchronous Generator Synchronous Machine Synthesis Method Third-order Flux-decay Model |
Content Type | Text |
Resource Type | Article |
Subject | Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering |
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