Communication architecture and data acquisition for experimental MicroGrid installations

Moghimi, Mojtaba; Bennett, Christopher J.; Leskarac, Domagoj; Stegen, Sascha; Lu, Junwei

doi:10.1109/appeec.2015.7380917

Cited by 26 publications

(22 citation statements)

References 5 publications

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“…Three commercial buildings are considered as the loads for the MGs to test the proposed system. The PV and commercial building load data is extracted from Griffith University monitoring system [19]. The representation of the LV network is depicted in Figure 11.…”

Section: Resultsmentioning

confidence: 99%

“…The VSIs are connected to the grid via an LCL filter and an L filter in the fourth leg to remove the harmonics. The commercial buildings are modelled as singlephase R-L combinations, where the actual data of load consumption of MGs, taken from the university monitoring system [19], is employed to model the MMG loads. The VSI is modelled to provide stable DC and AC side voltage and current.…”

Section: System Descriptionmentioning

confidence: 99%

“…However, the client initiates all the messages. Modbus messaging service provides the capability to read and write data using either single bit or 16-bit words [19].…”

Section: Modbus Tcp/ipmentioning

confidence: 99%

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

et al. 2018

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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.Energies 2018, 11, 3102 2 of 22 control the neutral current directly [3], where the 3P-4L voltage source inverter (VSI) provides better unbalance compensation than other active and passive methods [4]. Traditionally, a fixed portion of the 3P-4L converter capacity is specified to compensate the neutral current. However, the drawback of this method is in case of higher neutral current compensation (NCC) necessity, where it can lead to increased capacity of the 3P-4L compensator [5]. Authors in Reference [6] employed the 3P-4L VSI with PV installation to compensate for the neutral current but case scenarios for network interaction with different loads are not presented. A fixed capacity neutral current compensation method employing 3P-4L VSI under various load scenarios for network contingencies cases is proposed in Reference [7]. Furthermore, the 3P-4L VSI is used to eliminate the leakage current from PV installations [8]. However, none of these researches have considered higher capacity requirement. Authors in Reference [9] propose a dynamic capacity distribution method to compensate for the neutral current utilizing the maximum capacity of the VSI in a Microgrid (MG) but no communication system in presented. Authors in References [10,11] have employed conservative power theory to share the residual neutral current among the VSIs in an MG. Although a communication system have been employed, its operational details are not presented. Cloud-based Internet of Things (IoT) platforms to manage energy of building...

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Section: Resultsmentioning

confidence: 99%

Section: System Descriptionmentioning

confidence: 99%

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

et al. 2018

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“…Modbus TCP/IP (Transmission Control Protocol/Internet Protocol) has been used as the communication protocol for supervisory control and data acquisition (SCADA) systems. Hypertext Transfer Protocol (HTTP) TCP/IP communication protocol has been used as the backup protocol when the Modbus TCP/IP is not available [26]. MGCC is responsible for generating command signals for the LCs.…”

Section: Hybrid Ac/dc Microgridmentioning

confidence: 99%

Coordinated control of three-phase AC and DC type EV–ESSs for efficient hybrid microgrid operations

Rahman

Hossain

2016

Energy Conversion and Management

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a b s t r a c tThis paper presents a three-layered coordinated control to incorporate three-phase (3P) alternating current (AC) and direct current (DC) type electric vehicle energy storage systems (EV-ESSs) for improved hybrid AC/DC microgrid operations. The first layer of the algorithm ensures DC subgrid management by regulating the DC bus voltage and DC side power management. The second and third layer manages AC subgrid by regulating the AC bus voltage and the frequency by managing reactive and active power respectively. The multi-layered coordination is embedded into the microgrid central controller (MGCC) which controls the interlinking controller in between AC and DC microgrid and the interfacing controllers of the participating electric vehicles (EVs) and distributed generation (DG) units. The whole system is designed in MATLAB/SIMULINK Ò environment resembling the under construction microgrid at Griffith University, Australia. Extensive case studies are performed using real life irradiation data and commercial loads of the campus buildings. Impacts of homogeneous and heterogeneous single-phase EV charging are investigated to observe both balanced and unbalanced scenarios. Synchronization during the transition from the islanded to grid-tied mode is tested considering a contingency situation. From the comparative simulation results it is evident that the proposed controller exhibits effective, reliable and robust performance for all the cases.

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“…Wireless communication infrastructure like WIFI or ZigBee has a slower data transmission rate and affected by interference. However, it has many advantages including easy, fast, and low-cost instalment and perfectly fits the needed high flexibility option (plug-and-play) of MGs with a large number of DGs and loads [5].…”

Section: Introductionmentioning

confidence: 99%

Multi-Level Internet of Things Communication Strategy for Microgrid Smart Network

Elsebaay

Picallo

Klaina

et al. 2019

The 6th International Electronic Conference on Sensors and Applications

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Microgrids are one of the main drivers in achieving sustainable energy management in the context of Smart Cities and Smart Regions. In this way, multiple energy sources are employed and overall system performance is given by adequate information handling in terms of energy consumption requirements as well as user behavior profiles. This paper introduces a framework for wireless mesh communication, monitoring, and distributed energy management for domestic microgrids. A communication scheme based on a combination of sensors which describe energy consumption profiles (i.e., current probes, power consumption level at different loads), environmental (temperature, humidity and illumination level) as well as user behavior profiles (presence sensor detectors) is employed in order to provide an interactive scenario in terms of management of multiple energy sources. Practical tests have been performed by using an XBee ZigBee network in a meshed configuration connected to an experimental microgrid implemented at UPNA. The system has been implemented in order to provide cloud enabled data gathering, sending the required information via web services to a private cloud. These initial results are being scaled with the aim of providing a multi-microgrid communication and control scheme.

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Communication architecture and data acquisition for experimental MicroGrid installations

Cited by 26 publications

References 5 publications

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

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

Coordinated control of three-phase AC and DC type EV–ESSs for efficient hybrid microgrid operations

Multi-Level Internet of Things Communication Strategy for Microgrid Smart Network

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