Abstract
Large-scale integration of variable renewable energy and power electronic device has raised great changes in the physical characteristics of power systems. It is urgent to strengthen system weaknesses in system evolution study. To fill the gap, a generation expansion planning model considering weakness identification and reinforcement is proposed. An efficient outer-inner loop algorithm is designed based on the structure of the model. An IEEE 6-bus test case is carried out to show the effectiveness of the proposed model and methodology. The test case reveals that weakness reinforcement schemes are robust against the worst-case contingency and the unserved demand can be reduced to 20.6% after the weakness reinforcement process.
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