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Distributed Weight-Average-Prediction Control and Stability Analysis for an Islanded Microgrid With Communication Time Delay.
- Source :
-
IEEE Transactions on Power Systems . Jan2022, Vol. 37 Issue 1, p330-342. 13p. - Publication Year :
- 2022
-
Abstract
- This paper studies the communication time-delay issue in islanded microgrids (MGs) with the distributed secondary control architecture. Firstly, a time-delayed MG small-signal model is developed. Then, a new weight-average-prediction (WAP) controller is proposed to compensate the delayed system states. By introducing a time-delayed differential term in the proposed control law, the traditional time-delayed small-signal model is transformed into a neutral time-delayed mathematic model. Based on the developed model, the stability analysis is conducted considering both fixed time delay and time-varying delay. For the fixed time delay, a novel graphic analytical method is proposed to evaluate the time delay margin, which eliminates the conservatism compared with existing time-domain methods. For the time-varying delay, stability condition is established by a Lyapunov-Krasovskii function and linear matrix inequalities. In addition, some non-linear WAP control methods are discussed to guide the parameter tuning with a higher resolution. Lastly, the proposed method and analytical result are verified in the OPAL-RT real-time test platform. The results demonstrate the effectiveness and high performance of the proposed controller. [ABSTRACT FROM AUTHOR]
- Subjects :
- *MICROGRIDS
*LINEAR matrix inequalities
*GRAPHIC novels
Subjects
Details
- Language :
- English
- ISSN :
- 08858950
- Volume :
- 37
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Power Systems
- Publication Type :
- Academic Journal
- Accession number :
- 154265960
- Full Text :
- https://doi.org/10.1109/TPWRS.2021.3092717