Internet of Things Platform for Energy Management in Multi-Microgrid System to Improve Neutral Current Compensation

Mojtaba Moghimi, Jiannan Liu, Pouya Jamborsalamati, Fida Hasan Md Rafi, Shihanur Rahman, Jahangir Hossain, Sascha Stegen and Junwei Lu
Additional contact information
Mojtaba Moghimi: Queensland Micro- and Nano Centre, Griffith University, Brisbane, QLD 4111, Australia
Jiannan Liu: Queensland Micro- and Nano Centre, Griffith University, Brisbane, QLD 4111, Australia
Pouya Jamborsalamati: School of Engineering, Macquarie University, Sydney, NSW 2109, Australia
Fida Hasan Md Rafi: Network Development Department, ElectraNet, Adelaide, SA 5000, Australia
Shihanur Rahman: National Planning Department, AEMO, Melbourne, VIC 3000, Australia
Jahangir Hossain: School of Engineering, Macquarie University, Sydney, NSW 2109, Australia
Sascha Stegen: Queensland Micro- and Nano Centre, Griffith University, Brisbane, QLD 4111, Australia
Junwei Lu: Queensland Micro- and Nano Centre, Griffith University, Brisbane, QLD 4111, Australia

Energies, 2018, vol. 11, issue 11, 1-22

Abstract: In this paper, an Internet of Things (IoT) platform is proposed for Multi-Microgrid (MMG) system to improve unbalance compensation functionality employing three-phase four-leg (3P-4L) voltage source inverters (VSIs). The two level communication system connects the MMG system, implemented in Power System Computer Aided Design (PSCAD), to the cloud server. The local communication level utilizes Modbus Transmission Control Protocol/Internet Protocol (TCP/IP) and Message Queuing Telemetry Transport (MQTT) is used as the protocol for global communication level. A communication operation algorithm is developed to manage the communication operation under various communication failure scenarios. To test the communication system, it is implemented on an experimental testbed to investigate its functionality for MMG neutral current compensation (NCC). To compensate the neutral current in MMG, a dynamic NCC algorithm is proposed, which enables the MGs to further improve the NCC by sharing their data using the IoT platform. The performance of the control and communication system using dynamic NCC is compared with the fixed capacity NCC for unbalance compensation under different communication failure conditions. The impact of the communication system performance on the NCC sharing is the focus of this research. The results show that the proposed system provides better neutral current compensation and phase balancing in case of MMG operation by sharing the data effectively even if the communication system is failing partially.

Keywords: unbalance compensation; voltage source inverter; neutral current compensation; Multi-Microgrid; communication system; Internet of Things (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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