In the framework of the sequential quadratic programming (SQP) method for optimal power flow (OPF) problems, the authors propose a new dual-type method for solving the QP subproblems induced in the SQP method. Their method achieves some attractive features; it is computationally efficient and numerically stable. The computational formulae of their method are simple, concise and easily programmed. The authors have tested their method for OPF problems on several power systems, including a 2500-bus system.
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Lin et al. (1997) studied this question.
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