Considerations for the Assessment Resilience in Low Voltage Electrical Network with Photovoltaic Systems — Part I

Abstract

Resilience promises to be a concept to integrally evaluate the operation of an electrical grid, to guarantee robustness, reliability, adaptability, and restoration in the electrical system. Resilience is mainly studied to analyse the negative effects caused by high impact events and low probability of occurrence (e.g. natural disasters) in power systems and medium voltage distribution networks. This paper aims to present considerations about the assessment of resilience to evaluate a lowvoltage power grid with photovoltaic systems. The resilience level may be a unique quantitative value that defines in real-time the operational state of the electrical grid. This paper proposes the resilience evaluation in 1 to 10-minute observation window using four concepts, given weights to each concept and proposing twovisualization form of resilience. Therefore, this research proposes the resilience study in low voltage networks that integrate distributed resources, seeking to highlight the importance of evolution-temporary evaluation.