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Lucas S. Chaves
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Adriano J. Masi
Universidade Federal de Minas Gerais (UFMG) – Programa de Pós-Graduação em Engenharia Elétrica
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Wanderson F. de Souza
Universidade Federal de Minas Gerais (UFMG) – Programa de Pós-Graduação em Engenharia Elétrica
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Thiago de Oliveira
Universidade Federal de Minas Gerais (UFMG) – Departamento de Engenharia Eletrônica
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Braz de Jesus Cardoso Filho
Universidade Federal de Minas Gerais (UFMG) – Departamento de Engenharia Elétrica
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Danilo I. Brandao
Universidade Federal de Minas Gerais (UFMG) – Departamento de Engenharia Elétrica
Keywords:
microgrid, power-based control, distributed generation, communication, latency and stability
Abstract
This paper analyzes the impact of the communication system latency on the stability of a centralized microgrid. For comparison purposes, wireless communication technologies LoRaWAN (Long Range Wide Area Network), Zigbee and LTE (Long Term Evolution) have been analyzed. The microgrid considered herein is a low-voltage microgrid composed of photovoltaic generation systems and energy storage systems (i.e., DER – Distributed Energy Resources) and dispersed loads. The microgrid control is centralized to steer power through the microgrid point of common coupling, named power-based control (PBC). The results have showed that the latency of the communication system and the step processing of the central controller significantly interfere with the positions of the poles within the unit circle of the Z- plane, which may interfere with the stability of the operation of the centralized microgrid.
