Abstract
This paper presents a distributed control scheme for reliable autonomous operation of a hybrid three-port ac/dc/distributed storage (ds) microgrid by means of power sharing in individual network, power exchange between ac and dc networks, and power management among three networks. The proposed distributed control scheme includes: 1) a fully decentralized control, which is achieved by local power sharing (LPS) in individual ac or dc network, global power sharing (GPS) throughout ac/dc networks, and storage power sharing (SPS) among distributed storages. Upon fully decentralized control, each power module can operate independently without communication links. This would benefit for riding through communication malfunction in multilayer supervision control system; 2) a multilevel power exchange control for scheduling LPS, GPS, and SPS has been developed to reduce unnecessary power exchange between ac/dc networks and operations of DS units with the benefit of reducing power exchange losses and prolonging storage lifetime. The proposed distributed control strategy has been verified by the simulation and experimental results.
Original language | English |
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Journal | I E E E Transactions on Industrial Electronics |
Volume | 62 |
Issue number | 2 |
Pages (from-to) | 1279 - 1290 |
Number of pages | 12 |
ISSN | 0278-0046 |
DOIs | |
Publication status | Published - Feb 2015 |
Keywords
- Decentralized control
- Distributed control
- Distributed generation (DG)
- Distributed storage (DS)
- Droop control
- Global power sharing (GPS) control
- Hybrid grid
- Multilevel control
- Smart grid