On Power Systems Stability Definitions and Analysis: the DC Microgrid example

Date : 26/01/2021

Tuesday 26th January14:00 – 15:00 – Alessio Iovine, CNRS researcher at L2S 

Title: On Power Systems Stability Definitions and Analysis: the DC Microgrid example

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Abstract: The problem of defining and classifying power system stability has been addressed several times in the scientific literature. However, only recently the exchanges between the Control and Power Systems scientific communities led to a precise definitions, and to systematic classifications that encompass all practical instability scenarios. Then, renewables and storage devices utilisation forced to shift from the classical notion of electrical grid to the new paradigm of Microgrids, and to review and modify the power system stability classifications to properly reflect their relevant stability issues.

This talk will first introduce stability notions for power systems and especially for the new generation of power systems, i.e. the Microgrids. Then, the  hierarchical control structure that is usually adopted will be described, and the stability analysis of a Direct Current (DC) MicroGrid composed by a number of elements as different types of renewable energy sources or kind of storage devices is considered as case study. 

To the purpose to meet power balance and grid voltage stability requirements, both the short-term and long-term stability analysis of the DC MicroGrid are provided. Distributed nonlinear control techniques based on Lyapunov analysis are described to prove short-term stability, while a centralised receding horizon control approach is used to ensure long-term stability. Simulations and Hardware-in-the-Loop results are provided.

Bio: Alessio Iovine received the European Doctorate  degree  in  information  science  and  engineering  in 2016 from  the  University  of  L’Aquila, Italy, in collaboration with CentraleSupélec, Paris-Saclay University, France. He held several postdoctoral positions: at Efficacity Research and Development Center, Paris, France, University of L’Aquila, University of California at Berkeley, USA, and at CentraleSupélec, France. He is currently a CNRS researcher at L2S at CentraleSupélec.
His  research  interests  are related on advanced control methods for power and energy systems and traffic control, with smartgrids, integration of renewables and storage devices, autonomous vehicles and cooperative intelligent transportation systems as core applications.