Resilience Improvement of Microgrid Cluster Systems Based on Two-Stage Robust Optimization

Shui Ji (), Yun Liu, Shanshan Wu and Xiao Li
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Shui Ji: State Power Investment Corporation Research Institute, Beijing 102209, China
Yun Liu: State Power Investment Corporation Research Institute, Beijing 102209, China
Shanshan Wu: State Power Investment Corporation Research Institute, Beijing 102209, China
Xiao Li: State Power Investment Corporation Research Institute, Beijing 102209, China

Energies, 2024, vol. 17, issue 17, 1-12

Abstract: For microgrids in deep and remote sea areas, ocean currents are widely used as an emerging power generation resource. Implementing ES systems is crucial for smooth power output and grid stability. The stability of power output from sea current energy generation faces challenges due to speed fluctuations. Enhancing resilience requires addressing transmission line failures caused by extreme seabed conditions, and ensuring operational security. An ES configuration method considering line faults based on two-stage robust optimization is presented in this paper. First, in order to simultaneously consider planning and operation, a defender–attacker–defender (DAD) model was established. Additionally, the capacity, rated power, and charging/discharging power of ES during operation were jointly optimized through the column-and-constraint generation (C&CG) algorithm. In addition, the rationality and effectiveness of the proposed method were demonstrated through experiments on modified IEEE six-bus and fifty-seven-bus systems. The results show that a distributed ES configuration increased system resilience by 54.60% and reduced abandoned power rate by 57.06% compared with the situation without ES configuration.

Keywords: microgrid cluster system; ocean current power generation; resilience; robust optimization (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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