Intelligent Reliability Enhancement of Solar-Integrated Distribution Networks: A Probabilistic and Optimization-Based Approach Utilizing Battery Energy Storage Systems

Abstract

The rapid deployment of solar photovoltaic (PV) generation in modern power distribution systems is both a challenge and an opportunity. While solar energy is the basis for decarbonisation and sustainability goals, the intermittent nature of solar energy raises reliability concerns for distribution networks. This paper presents a comprehensive probabilistic reliability assessment of solar-integrated distribution networks with the focus on advanced optimisation of battery energy storage system (BESS) operations. Using state-of-the-art modelling, simulation and optimisation techniques, we assess impacts of solar variability and BESS intervention on the important reliability indices, SAIDI, SAIFI and CAIDI. The extensive scenario analysis and comparative studies with conventional systems demonstrate that the intelligent BESS operation not only alleviates the negative effects of renewable intermittency but also allows the reliability indices to exceed the traditional benchmarks. This work provides a strong framework to future proof grid infrastructure in the era of high renewable energy integration.