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Optimal power flow solutions under variable load conditions
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DOI：10.1109/59.898091.png)
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This work presents a methodology to calculate a sequence of Optimal Power Flow (OPF) solutions under variable load conditions. The aim is to obtain a set of optimal operating points in the neighborhood of the bounds of the region defined by the load flow equations and a set of operational limits. For this, an algorithm based on the Continuation method and on a Primal-Dual Interior Point optimization method is proposed. Such algorithm consists of two main steps: the predictor step, which uses a linear approximation of the Karush-Kuhn-Tucker (KKT) renditions to estimate a new operating point for an increment in the system load; and the corrector step, which calculates the optimum corresponding to the new load level via a nonlinear Primal-Dual Interior Point method. Indices for critical buses and inequality constraints are a byproduct of the methodology. In addition, sensitivity analysis is performed to calculate the amount of reactive compensation which allows for a pre-specified increase in the system load. Results for realistic test systems are presented.
Keyword:
continuation method
nonlinear interior point method
optimal power flow
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IF:
7.2
论文数:
1.1W
被引数:
5.0W
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