Experimental validation of a multiobjective strategy to coordinate multifunctional converters in AC low-voltage microgrids

• Grant number: 18/22172-1
• Support type: Scholarships abroad - Research Internship - Doctorate
• Effective date (Start): June 03, 2019
• Effective date (End): March 20, 2020
• Field of knowledge: Engineering - Electrical Engineering - Power Systems
• Principal Investigator: Fernando Pinhabel Marafão
• Grantee: Augusto Matheus dos Santos Alonso
• Supervisor abroad: Elisabetta Tedeschi
• Home Institution: Faculdade de Engenharia (FE). Universidade Estadual Paulista (UNESP). Campus de Bauru. Bauru , SP, Brazil
• Local de pesquisa : Norwegian University of Science and Technology (NTNU), Norway
• Associated to the scholarship: 17/24652-8 - Development of a methodology for cooperative control of distributed generators in microgrids with multiple operational considerations, BP.DR

Abstract

The dense presence of power converters in modern electric systems, such as AC low-voltage microgrids with significant decentralization of energy generation, requires the adoption of techniques able to coordinate their operation in order to provide adequate operational conditions for the system. Several requirements in regard to robustness, system's stability, as well as the compliance with power quality standards, ought to be taken into consideration on the microgrid's management and operational control of dispersed power converters. As a consequence, multiobjective strategies are demanded to be developed to coordinate such converters focusing on not only attending a global goal, such as power flow control at the microgrid's point of common coupling, but also offering power quality enhancement in secondary electrical nodes. This internship proposal aims at performing experimental validations related to the methodological studies being carried by the student, which concerns a multiobjective approach that provides the coordination of multifunctional power converters in regard to active and reactive current injection, and additionally, distributed compensation of harmonics circulating within the microgrid. A laboratory scale prototype of a low-voltage AC microgrid should be assembled at the host institution, considering multiple dispersed converters operating under different voltage conditions imposed by an interconnected distribution grid. Diversified operational features in regard to the microgrid topology, under single- or three-phase architecture, should be assessed upon normative requirements recognized worldwide, beyond taking into consideration some particularities demanded on the Brazilian codes for electrical power systems. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

BRANDAO, DANILO IGLESIAS; MARAFAO, FERNANDO PINHABEL. Distributed selective harmonic mitigation and decoupled unbalance compensation by coordinated inverters in three-phase four-wire low-voltage networks. Electric Power Systems Research, v. 186, SEP 2020. Web of Science Citations: 0.

DOS SANTOS ALONSO, AUGUSTO MATHEUS; BRANDAO, DANILO IGLESIAS; CALDOGNETTO, TOMMASO; MARAFAO, FERNANDO PINHABEL; MATTAVELLI, PAOLO. A selective harmonic compensation and power control approach exploiting distributed electronic converters in microgrids. INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS, v. 115, FEB 2020. Web of Science Citations: 0.