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| Content Provider | IET Digital Library |
|---|---|
| Author | Eskandari, Mohsen Li, Li Moradi, Mohammad H. Siano, Pierluigi Blaabjerg, Frede |
| Abstract | Decentralised droop-like control method is the most favourable control system for power converter-based microgrids (MGs). In conventional V–Q droop loops, reactive power sharing is used as a means of voltage regulation to prevent currents from circulating among distributed generation units. However, since the voltage is not a global variable, reactive power sharing is not implemented precisely, and thus converters may be exposed to overcurrent conditions and the stability of the MGs is put at risk. Besides, the droop-like reactive power sharing causes voltage deviations and power quality issues. This study proposes a novel control method which is able to implement accurate reactive power sharing and voltage regulation to its nominal band in a networked MG. Both the control targets are achieved, fast and simultaneously, by only one control signal. So the requirement of a secondary controller for voltage restoration is obviated. A novel power flow-based method is proposed to estimate the voltage at the MG main bus, which is adopted as a common variable, thus making the proposed method decentralised. The presented method is fast, effective and applicable to networked MGs with arbitrary topology. Simulation results prove the effectiveness and superiority of the proposed method over existing methods. |
| Starting Page | 1366 |
| Ending Page | 1377 |
| Page Count | 12 |
| ISSN | 17518687 |
| Volume Number | 14 |
| e-ISSN | 17518695 |
| Issue Number | Issue 7, Apr (2020) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-gtd/14/7 |
| Journal | IET Generation, Transmission & Distribution |
| Publisher Date | 2019-09-04 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Autonomous Networked Microgrid Consensus Control Control of Electric Power System Control Signal Decentralised Control Decentralised Droop-like Control Method Distributed Generation Units Distributed Power Generation Distribution Network Droop Loops Droop-like Reactive Power Favourable Control System Global Variable Power Sharing Harmonics Load Flow Multivariable Control System Networked MG Power And Energy Control Power Converter Power Converter-based Microgrid Power Distribution Control Power Flow-based Method Power Generation Control Power Quality Issues Power Supply Quality Power System Control Reactive Power Control Reactive Power Sharing Secondary Controller Simultaneous Reactive Power Sharing Voltage Control Voltage Deviations Voltage Regulation Voltage Restoration |
| Content Type | Text |
| Resource Type | Article |
| Subject | Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering |
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