Integrated Local and Coordinated Overvoltage Control to Increase Energy Feed-In and Expand DER Participation in Low-Voltage Networks

Autor(es)

Alonso, Augusto M. S. ; Arenas, Luis De Oro ; Brandao, Danilo, I ; Tedeschi, Elisabetta ; Marafao, Fernando P.

• Tipo de documento: Artigo Científico
• Fonte: IEEE TRANSACTIONS ON SUSTAINABLE ENERGY; v. 13, n. 2, p. 13-pg., 2022-04-01.

Resumo

Large amounts of active power injection by inverter-interfaced distributed energy resources (DER) is a common cause of overvoltage in low-voltage networks. Hence, local active and reactive power control (i.e., Volt/Watt and Volt/VAR, respectively) are adopted to limit voltage rise, leading to active power curtailment. This paper proposes an automatic control strategy to steer non-dispatchable (nd-DER) and dispatchable (d-DER) inverters in low-voltage networks, mitigating overvoltage through integrated local and coordinated Volt/Watt and Volt/VAR functionalities. Moreover, active power curtailment is avoided whenever possible. The method does not require i) the implementation of optimization algorithms or ii) knowledge about line impedance parameters or the location of DERs. The control approach exploits the power flow dispatchability of low-voltage networks comprising one point-of-common coupling with the distribution grid, allowing DERs close to the distribution transformer to also contribute to voltage regulation by only using a low-bandwidth communication link. Simulation results show the flexibilities of the proposed approach and demonstrate that active power injection can be increased by up to 25% for the considered scenario in comparison to conventional local Volt/Watt or Volt/VAR schemes. Experimental results based on a laboratory prototype with three inverter-interfaced DERs certify the applicability of the approach to real-life implementations. (AU)

• Processo FAPESP: 19/22304-8 - Definição de metodologias de projeto e controle de uma interface de qualidade de energia para compensação de distúrbios de tensão
• Beneficiário: Luis Armando de Oro Arenas
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 16/08645-9 - Pesquisas interdisciplinares em redes inteligentes de energia elétrica
• Beneficiário: João Bosco Ribeiro do Val
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 21/12875-8 - Estabilidade e controle de sistemas de energia utilizando técnicas de sistemas de controle em redes
• Beneficiário: Augusto Matheus dos Santos Alonso
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 17/24652-8 - Desenvolvimento de metodologia de controle cooperativo de geradores distribuídos em microrredes de energia com múltiplas considerações de operação
• Beneficiário: Augusto Matheus dos Santos Alonso
• Modalidade de apoio: Bolsas no Brasil - Doutorado