Simultaneous control and protection schemes for DC multi microgrids systems. (January 2019)

• Record Type: Journal Article
• Authors: Abdali, Ali; Noroozian, Reza; Mazlumi, Kazem
• Is Part Of: International journal of electrical power & energy systems. Volume 104(2019)
• Page Start: 230
• Page End: 245
• Publication Date: 2019-01
• Subjects: DC microgrid (DCµG) -- Hysteresis Current Control (HCC) -- Fault detection -- Fuzzy inference system (FIS) -- Distributed generation (DG); Electrical engineering -- Periodicals; Electric power systems -- Periodicals; Électrotechnique -- Périodiques; Réseaux électriques (Énergie) -- Périodiques; Electric power systems; Electrical engineering; Periodicals; 621.3
• DOI: 10.1016/j.ijepes.2018.06.054
• Languages: English
• ISSNs: 0142-0615

Abstract

Highlights: Simultaneous protection and control schemes for DC multi microgrids systems are proposed, that have not been studied in previous papers. Fast fault detection method based on fuzzy inference system (FIS) is proposed which is able to detect faults more quickly than the other existing methods. Proposed control interface modeling providing suitable power flow and cancellation of interactions between DC microgrids compared to other papers. For validation of the capability of FIS fault detection scheme, simulated network is implemented in laboratory-scale. Abstract: This paper proposes a novel simultaneous control interface and protection scheme for DC microgrids (DCµG) interconnected systems, although the interconnections could be possible via two power electronic systems such as DC/DC converter. Each DCµG presented in this paper is supplied by AC grid as well as battery bank unit, distributed generation (DG) unit and AC load unit. The proposed control interface is based on a developed suitable small signal model for each DCµG that provides proper power flow control and cancellation of interactions between DCµG. Also, the presented protection scheme for fast fault detection in DC link is based on fuzzy inference system (FIS), so that faults could be detected as quickly as possible in few milliseconds. In fact, the aim of this paper is simultaneous protection and control interface for DC multi microgrids, so that the performance of the controller and protection system is separate, yet integrated together. As such, DC multi microgrid performance under different events, such as change in active power of DGs and short circuit is not in trouble and disorder. Simulation results indicate the remarkable effectiveness of the proposed control interface and protection scheme for DCµG interconnected systems. For validation of the capability and feasibility of FIS fault detection scheme, simulated network and protection algorithm are implemented in laboratory-scale. The implementation results demonstrate that FIS protection scheme can swiftly detect faults within a few milliseconds.