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Model-Independent Derivative Control Delay Compensation Methods for Power Systems

Room 157, School of Electrical and Electronic Engineering, University College Dublin, Belfield, Dublin 4, Ireland
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Energies 2020, 13(2), 342; https://doi.org/10.3390/en13020342
Received: 5 December 2019 / Revised: 26 December 2019 / Accepted: 7 January 2020 / Published: 10 January 2020
The paper examines the effectiveness of utilizing the derivatives of time delayed, wide-area signals in mitigating their destabilizing impact on power system dynamic response. In particular, the paper discusses two derivative control-based delay compensation methods, namely proportional-derivative (PD) and predictor-based delay compensation. The two methods are compared in terms of their open-loop signal fidelity and their impact on the closed-loop system stability. The paper also provides a technique to carry out small-signal stability analysis with inclusion of derivative control based compensation, which leads to a Neutral Time-Delay System (NTDS). In addition, we provide a new theorem on the stability of the NTDS. Finally, nonlinear time domain simulations and eigenvalue analysis based on the IEEE 14-bus and New England 39-bus systems were carried out for the sake of comparison of the two delay compensation methods. View Full-Text
Keywords: delay compensation; proportional-derivative (PD) control; predictor-based control; small-signal stability analysis; Neutral Time-Delay System (NTDS) delay compensation; proportional-derivative (PD) control; predictor-based control; small-signal stability analysis; Neutral Time-Delay System (NTDS)
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Liu, M.; Dassios, I.; Tzounas, G.; Milano, F. Model-Independent Derivative Control Delay Compensation Methods for Power Systems. Energies 2020, 13, 342.

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