Can a large-scale solar battery energy storage system improve accident prevention and mitigation?

This work describes an improved risk assessment approach for analyzing safety designs in the battery energy storage system incorporated in large-scale solar to improve accident prevention and mitigation, via incorporating probabilistic event tree and systems theoretic analysis. The causal factors and mitigation measures are presented.

Why do we need a risk assessment scheme?

As power system technologies advance to integrate variable renewable energy, energy storage systems and smart grid technol-ogies, improved risk assessment schemes are required to identify solutions to accident prevention and mitiga-tion.

Which risk assessment methods are inadequate in complex power systems?

Traditional risk assessment methods such as Event Tree Analysis, Fault Tree Analysis, Failure Modes and Effects Analysis, Hazards and Operability, and Systems Theoretic Process Analysis are becoming inadequate for designing accident prevention and mitigation measures in complex power systems.

What is a risk assessment framework?

The causal factors and mitigation measures are presented. The risk assessment framework presented is expected to benefit the Energy Commission and Sustainable Energy Development Authority, and Department of Standards in determining safety engineering guidelines and protocols for future large-scale renewable energy projects.

What is the proposed risk assessment methodology?

The proposed risk assess-ment methodology was presented and demonstrated in ’’Methodology’’ section. The formulation of the event tree and quantitative method to evaluate frequencies of out-comes for each site based on probabilities of failures of the LSS + BESS subsystems were presented.

How to develop a safety framework for complex energy systems?

Principles of incorporating both component and sys-temic view, assessment of safety barrier failures and assessment of indirect causal factors in abnormal sys-tem states are necessary to develop an adequate safety framework for complex energy systems such as an LSS with BESS.