Browsing by Author "Khiat, Mounir"

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Cloud Induced PV Impact on Voltage Profiles for Real Microgrids
(IEEE, 345 E 47TH ST, NEW YORK, NY 10017 USA, 2018) Kocer, Mustafa Catagatay; Yoldas, Yeliz; Goren, Selcuk; Onen, Ahmet; Alan, Irfan; Al-Agtash, Salem; Azzopardi, Brain; Martensen, Nis; Martinez-Ramos, Jose L.; Tzovaras, Dimitrios; Hadjidemetriou, Lenos; Khiat, Mounir; Camilleri, Tim; Borg, Nicholas; 0000-0002-5320-4213; AGÜ, Mühendislik Fakültesi, Elektrik - Elektronik Mühendisliği Bölümü
Integration of renewable energy sources (RESs) into power systems has been a popular topic for a long time. Due to government policies and incentives, it will be more popular in the future since it is a free and environment-friendly nature. Besides its advantages, photovoltaic (PV) generation causes some serious problems to the grid. Since PV generation directly depends on the solar irradiance, cloud movements can cause sudden changes on the output of PV power and this results in some power issues in the system such as voltage violations, reverse power flow, voltage fluctuations. These types of issues complicate to maintain voltage within compulsory levels at customer sides. Thus, cloud-induced transients in PV power are seen as a potential handicap for the future expansion of renewable energy resources. This study investigates effects of instantaneous changes in PV power on the customer side voltage levels. Daily PV power output and voltage profiles were simulated using a real-world microgrid design that will be implemented in the Malta College of Arts Science and Technology(MCAST) Campus.
Design considerations for campus micro-grid: MCAST Case Study
(IEEE, 345 E 47TH ST, NEW YORK, NY 10017 USA, 2018) Azzopardi, Brian; Azzopardi, Stefan; Mikalauskiene, Renata; Salem, Al-Agtash; Hadjidemetriou, Lenos; Tzovaras, Dimitris; Garcia Lopez, Francisco de Paula; Brandl, Petra; Onen, Ahmet; Borg, Nicholas; Khiat, Mounir; Camilleri, Tim; 0000-0002-7776-9390; AGÜ, Mühendislik Fakültesi, Elektrik - Elektronik Mühendisliği Bölümü
This paper aims to propose design considerations to transform the Malta College of Arts, Science and Technology (MCAST) current and future planned electrical network system into an efficient micro-grid. MCAST is a young higher education and research institution with its campus developing to a state-of-the-art campus with a vision to establish a living laboratory for training and research. During this study, consumption of electrical loads and photovoltaic (PV) generation have been monitored in real-time to define the micro-grid concept. These measurements provide the values to integrate a combined 63kWp PV system together with intelligent loads such as heating, ventilation and air-conditioning systems, and lighting, highlighting the integration capabilities. In addition, the future enlargement of the MCAST micro-grid is considered and recommendations are given on the infrastructure to complete an integral campus wide transformation. Eventually the 3DMgrid would be a blueprint for future micro-grids for training and research purposes.
Micro-Grid Campus Concept from Data to Design: Case Study Malta
(IEEE345 E 47TH ST, NEW YORK, NY 10017 USA, 2020) Azzopardi, Brian; Azzopardi, Stefan; Bartolo, Brian; Jately, Vibhu; Mikalauskine, Renata; Bhattacharya, Somesh; Khalifeh, Ala; Hadjidemetriou, Lenos; Tsolakis, Apostolos; (Martinez-Ramos, Jose Luis; Martensen, Nis; Onen, Ahmet; Borg, Nicholas; Khiat, Mounir; Camilleri, Tim; 0000-0002-7776-9390; 0000-0002-9354-9830; 0000-0003-3600-8090; 0000-0002-7305-8575; 0000-0003-2606-1402; AGÜ, Mühendislik Fakültesi, Elektrik - Elektronik Mühendisliği Bölümü; Önen, Ahmet
This paper aims to highlight the endeavors of a micro-grid campus development from data to design stage that is under development at the Malta College of Arts, Science and Technology (MCAST), Malta. Malta is an island in the middle of the Mediterranean Sea having an area of 316km2 and receives the highest EU solar irradiance. The MCAST micro-grid is the first living laboratory for training and research on the island with one-third of the campus fully development in state-of-the-art facilities. In this case study, the loads consumption, photovoltaic (PV) generation and potential Electric Vehicles (EVs), that may support the campus when necessary are analysed for further designs supported by over 2 years of campus data. This analysis would provide the understanding of integrating future EVs on campus and higher penetration of PVs while keeping high consumption loads at watch. In addition, reliability and cost factors of the MCAST micro-grid are considered and recommendations are given on the infrastructure to complete campus wide transformation.
Provision of Ancillary Services by a Smart Microgrid: An OPF Approach
(IEEE, 2018) Ramos, Jose L. Mart´ınez; Marcolini, Alejandro Marano; Lopez, Francisco P. Garc´ıa; Yravedra, Fernando Almagro; Onen, Ahmet; Yoldas, Yeliz; Khiat, Mounir; Ghomri, Leila; Fragale, Nunziatina; AGÜ, Mühendislik Fakültesi, Elektrik & Elektronik Mühendisliği Bölümü;
Ancillary services are all services required by the transmission (TSO) or distribution system operator (DSO) to maintain the integrity and stability of the transmission or distribution system as well as the power quality. Ancillary services that can be provided by a microgrid in grid-connected operation are frequency control support, voltage control support, congestion management, reduction of grid losses, and improvement of power quality. This paper presents the optimization problems used in the 3DMicroGrid project to determine the set-points of the different resources present in the microgrid to provide ancillary services to the power system in grid-connected operation: frequency control, voltage control and load curtailment. Results of the optimization of the pilot microgrid used in 3DMicroGrid are presented.