Effects of Distributed Generation on the Bidirectional Operation of Cascaded Step Voltage Regulators: Case Study of a Real 34.5 kV Distribution Feeder

Hugo Rodrigues de Brito; Valéria Monteiro de Souza; João Paulo Abreu Vieira; Maria Emília de Lima Tostes; Ubiratan Holanda Bezerra; Vanderson Carvalho de Souza; Daniel da Conceição Pinheiro; Heitor Alves Barata; Hugo Nazareno de Souza Cardoso; Marcelo Sousa Costa

arXiv · 2310.09074

Effects of Distributed Generation on the Bidirectional Operation of Cascaded Step Voltage Regulators: Case Study of a Real 34.5 kV Distribution Feeder

Hugo Rodrigues de Brito·Valéria Monteiro de Souza·João Paulo Abreu Vieira·Maria Emília de Lima Tostes·Ubiratan Holanda Bezerra·Vanderson Carvalho de Souza·Daniel da Conceição Pinheiro·Heitor Alves Barata·Hugo Nazareno de Souza Cardoso·Marcelo Sousa Costa

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Abstract

This work investigates the impact of feeder bidirectional active power flow on the operation of two cascaded step voltage regulators (SVRs) located at a 34.5 kV rural distribution feeder. It shows that, when active power flow reversal is possible both by network reconfiguration and by high penetration levels of distributed generation (DG), typical SVR control mode settings are unable to prevent the occurrence of runaway condition, a phenomenon characterized by loss of SVR voltage control capabilities. Such developments are the basis for a DG pre-dispatch control strategy that aims to avoid the adverse effects of the described power flow reversal scenarios, as well as to ensure reliable operation of the utility distribution network.

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Hugo Rodrigues de Brito, Valéria Monteiro de Souza, João Paulo Abreu Vieira, Maria Emília de Lima Tostes, Ubiratan Holanda Bezerra, Vanderson Carvalho de Souza, Daniel da Conceição Pinheiro, Heitor Alves Barata, Hugo Nazareno de Souza Cardoso, Marcelo Sousa Costa. 2023-10-13. Effects of Distributed Generation on the Bidirectional Operation of Cascaded Step Voltage Regulators: Case Study of a Real 34.5 kV Distribution Feeder. https://arxiv.org/abs/2310.09074

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