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Active control to increase pv hosting capacity of electrical power distribution network

Grant number: 18/23391-9
Support type:Scholarships in Brazil - Master
Effective date (Start): March 01, 2019
Effective date (End): December 14, 2020
Field of knowledge:Engineering - Electrical Engineering - Power Systems
Principal researcher:Fernanda Caseño Trindade Arioli
Grantee:Guilherme de Oliveira Custodio
Home Institution: Faculdade de Engenharia Elétrica e de Computação (FEEC). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil
Associated scholarship(s):19/25076-6 - Active control of DER-Rich distribution networks using artificial intelligence, BE.EP.MS

Abstract

Electrical power distribution networks are likely to experience in the next decade significant infrastructural changes due to the massive integration of low carbon technologies. The deployment of these devices, for instance, photovoltaic (PV) systems, are expected to be encouraged by governments in accordance to the Paris Agreement, signed by 195 countries, including Brazil, to reduce greenhouse emissions. For a certain penetration level, voltage transgressions, considering the statutory limits established by the Brazilian Electricity Regulatory Agency, and asset congestion will occur. Moreover, given a certain voltage level, PV systems will disconnect from the system, leading to loss of generation for customers. As a result, Distribution Network Operators (DNOs) management of future networks will be more challenging. In this context, such violations can be mitigated using typical controllable devices, for instance, on load tap changer transformers and line voltage regulators, along with other assets, such as PV system inverters. However, the adequate coordination of all these devices is difficult, requiring sophisticated control techniques. The main objective of this work is the investigation of the benefits and implementation challenges of an AC Optimal Power Flow (OPF)-based centralized Active control that takes full advantage of typical and new controllable devices in future distribution networks to mitigate the impact of the massive penetration of PV systems and, thus, increase PV hosting capacity. The AC OPF formulation considers the unbalanced nature of distribution networks, since PV systems are mostly installed in low voltage networks. The techniques developed in this work will be tested using real distribution networks with installed PV systems and data of a Brazilian DNO. (AU)

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