Design factors for developing a university campus microgrid

Hadjidemetriou, Lenos; Zacharia, Lazaros; Kyriakides, Elias; Azzopardi, Brian; Azzopardi, Stefan; Mikalauskiene, Renata; Al-Agtash, Salem; Al-Hashem, Mohammad; Tsolakis, Apostolos C.; Ioannidis, Dimosthenis; Tzovaras, Dimitrios

doi:10.1109/energycon.2018.8398791

Cited by 25 publications

(24 citation statements)

References 15 publications

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“…The DERs are based on conventional and renewable primary resources, such as diesel generators and photovoltaics (PVs), respectively. For investigation purposes, university campuses are typically selected as pilot microgrids to serve as living laboratories [4]. The design and implementation of such a microgrid framework (enhanced by novel control schemes) in a university campus is the goal of the 3DMicroGrid project funded by ERANETMED.…”

Section: A Motivation and Backgroundmentioning

confidence: 99%

“…As it can be noted, the components consisting the future microgrid can be separated into four parts: (i) the energy demand, (ii) the energy generation, (iii) the energy storage system, and (iv) the single Point of Common Coupling (PCC) for interconnecting with the main grid. More information for the MCAST microgrid can be found in [4].…”

Section: Mcast Microgrid Configurationmentioning

confidence: 99%

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Optimal Energy Management and Scheduling of a Microgrid in Grid-Connected and Islanded Modes

Zacharia

Tziovani

Savva

et al. 2019

2019 International Conference on Smart Energy Systems and Technologies (SEST)

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Microgrids are becoming one of the main components of future smart grids. Ensuring their optimal and stable operation is of crucial importance and can be a challenging task. In this paper, two optimization algorithms are implemented for scheduling the microgrid operation in grid-connected and islanded modes, according to the priorities and objectives in each mode. For achieving an optimal operation at each mode, the proposed scheme is able to shed loads, define the generation level of the photovoltaics and regulate the charging/ discharging level of the Energy Storage System (ESS). The effectiveness of the proposed scheduling is demonstrated through an analytical realtime simulation, where various transitions between the gridconnected and islanded modes are considered. The results indicate that the proposed scheme is able to regulate successfully the energy flows of the microgrid even under various transitions.

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Section: A Motivation and Backgroundmentioning

confidence: 99%

Section: Mcast Microgrid Configurationmentioning

confidence: 99%

Optimal Energy Management and Scheduling of a Microgrid in Grid-Connected and Islanded Modes

Zacharia

Tziovani

Savva

et al. 2019

2019 International Conference on Smart Energy Systems and Technologies (SEST)

Self Cite

View full text Add to dashboard Cite

show abstract

“…The microgrid consists of four main parts: (i) the energy demand, (ii) the energy generation units, (iii) the energy storage system, and (iv) the single PCC for the interconnection with the main grid. A detailed analysis of the MCAST microgrid components and main functional modes are presented in [10].…”

Section: Microgrid Configurationmentioning

confidence: 99%

“…Step 1: Solves the load shedding MILP optimization described by (1)- (10) Step 2: If there is at least one non-essential load that can be satisfied, then the load shedding MILP optimization given by…”

Section: Optimization-based Islandingmentioning

confidence: 99%

Islanding and Resynchronization Procedure of a University Campus Microgrid

Zacharia

Kyriakou

Hadjidemetriou

et al. 2018

2018 International Conference on Smart Energy Systems and Technologies (SEST)

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During the last decade, microgrids are attracting a significant attention due to their numerous advantages. Amongst them, the most important one is their ability to operate either in grid-connected or in islanded (autonomous) mode. However, the transition between the two modes can be challenging in terms of maintaining the stability and integrity of the microgrid. In this paper, an optimization-based islanding methodology is developed to ensure a timely and smooth transition from the grid-connected to the islanded mode. This is achieved through shedding loads, by defining the generation level of the photovoltaics (energy spill) and by regulating the charging/discharging rate of batteries. A resynchronization method is also presented along with the requirements that need to be satisfied for the smooth reconnection of the microgrid back to the main grid. The effectiveness of the proposed approach is demonstrated through simulation results for the events of surplus energy production, and excess energy demand of the microgrid.

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“…In the literature, active and reactive power control are thoroughly investigated for grid connected MGs [19][20][21]. Various controllers are proposed for MGs to regulate the active and reactive power of RES to minimize network losses and voltage limits.…”

Section: Introductionmentioning

confidence: 99%

Phase Balancing and Reactive Power Support Services for Microgrids

et al. 2019

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Alternating current (AC) microgrids are expected to operate as active components within smart distribution grids in the near future. The high penetration of intermittent renewable energy sources and the rapid electrification of the thermal and transportation sectors pose serious challenges that must be addressed by modern distribution system operators. Hence, new solutions should be developed to overcome these issues. Microgrids can be considered as a great candidate for the provision of ancillary services since they are more flexible to coordinate their distributed generation sources and their loads. This paper proposes a method for compensating microgrid power factor and loads asymmetries by utilizing advanced functionalities enabled by grid tied inverters of photovoltaics and energy storage systems. Further, a central controller has been developed for adaptively regulating the provision of both reactive power and phase balancing services according to the measured loading conditions at the microgrid’s point of common coupling. An experimental validation with a laboratory scale inverter and a real time hardware in the loop investigation demonstrates that the provision of such ancillary services by the microgrid can significantly improve the operation of distribution grids in terms of power quality, energy losses and utilization of available capacity.

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Design factors for developing a university campus microgrid

Cited by 25 publications

References 15 publications

Optimal Energy Management and Scheduling of a Microgrid in Grid-Connected and Islanded Modes

Optimal Energy Management and Scheduling of a Microgrid in Grid-Connected and Islanded Modes

Islanding and Resynchronization Procedure of a University Campus Microgrid

Phase Balancing and Reactive Power Support Services for Microgrids

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