Optimisation-based Approaches for Evaluating the Aggregation of EVs and PVs in Unbalanced Low-Voltage Networks

• Autores: Andres Felipe Cortes Borray
• Directores de la Tesis: Jose Emilio Rodriguez Seco (dir. tes.), Julia Merino Fernández (dir. tes.), Esther Torres Iglesias (dir. tes.), Angel Javier Mazón Sainz-Maza (tut. tes.)
• Lectura: En la Universidad del País Vasco - Euskal Herriko Unibertsitatea ( España ) en 2021
• Idioma: inglés
• Tribunal Calificador de la Tesis: Sami Repo (presid.), Pablo Eguía López (secret.), Jesús Fraile Ardanuy (voc.)
• Programa de doctorado: Programa de Doctorado en Sistemas de Energía Eléctrica por la Universidad de Málaga; la Universidad de Sevilla; la Universidad del País Vasco/Euskal Herriko Unibertsitatea y la Universidad Politécnica de Catalunya
• Materias:
  • Ciencias tecnológicas
    • Ingeniería y tecnología eléctricas
      • Aplicaciones eléctricas
      • Transmisión y distribución
• Enlaces
  • Tesis en acceso abierto en: ADDI
• Resumen

  • In the near future, it is expected that the distribution system operators face different technical challenges derived from the massification of electric mobility and renewable energy sources in the low voltage networks. The purpose of this thesis is to define different smart coordination strategies among different agents involved in the low voltage networks such as the distribution system operator, the aggregators and the end-users when significant penetration levels of these resources are adopted. New models for representing the uncertainty of the photovoltaic output power and the connection of the electric vehicles are introduced. A new energy boundary model for representing the flexibility of electric vehicles is also proposed. In combination with the above models, four optimisation models were proposed as coordination strategies into three different approaches: individual, population, and hybrid. The first model was defined at the aggregator level, whereas the other models were proposed at the distribution system operator level. Complementary experimental cases about the proposed optimisation model in the individual-based approach and the quadratic formulation in the hybrid approach for the PV power curtailment were carried out to test its response in real-time. Simulations results demonstrated that the proposed coordination strategies could effectively manage critical insertion levels of electric vehicles and photovoltaic units in unbalanced low voltage networks.