Power system controlled islanding equipped with Battery Energy Storage Systems (BESS)

Mat Nasir, Amar Saufi (2024) Power system controlled islanding equipped with Battery Energy Storage Systems (BESS). Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

Severe outages in power systems can result in cascading failures, leading to uncontrolled system splitting and instability. Intentional islanding is a remedial action that deliberately splits the system into balanced, stand-alone islands to ensure a continuous electricity supply until full restoration. To optimize controlled islanding, various optimization techniques are employed, with load shedding traditionally used to balance the islands post-splitting. This study explores the integration of Battery Energy Storage Systems (BESS) to enhance the effectiveness of controlled islanding, aiming to maintain power balance without relying on conventional load shedding. The IEEE 30-bus, 39-bus, and 118-bus systems are employed to develop innovative intentional controlled islanding strategies incorporating BESS, with a focus on power balance during islanding events. The methodology includes power flow analysis, BESS parameter analysis (size and location), and the development of a BESS integration algorithm into intentional islanding solutions. The main objective is to evaluate the effectiveness of BESS in forming balanced islands and optimizing intentional controlled islanding strategies. Findings reveal that an optimal BESS size is 80% of the total load, and strategic placement based on line loss analysis minimizes energy losses and enhances efficiency. The BESS optimization strategy is shown to be scalable and adaptable across different system sizes. Six case studies validate the effectiveness of BESS in managing power surpluses and deficits, supporting reliable island operations. These findings contribute valuable insights into BESS integration, providing a foundation for future work and practical applications in intentional controlled islanding strategies.

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