An optimal power flow calculation method based on class-extended variable interior point method
A technology of optimal power flow and calculation method, applied in the field of power system
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[0089] The present invention will be further described in detail below in conjunction with the accompanying drawings.
[0090] figure 1 Flow chart for the calculation of optimal power flow according to the prediction-correction method.
[0091] The convergence of the algorithm in this paper is verified by an IEEE30 node example. The optimization goal is to minimize the network loss. The classical prediction-correction interior point method and the class-expanded interior point method based on the prediction-correction method are used to calculate the same examples for comparison and verification. These two methods are called method 1 and method 2 respectively in the calculation example. The convergence criteria are ρ∞ <2D-4.
[0092] The voltage is selected as the expansion class, the initial value of the lower expansion variable α and the upper expansion variable β is 0.01, and the penalty factor ξ is 10 6 . For using the same per-unit voltage constraint, and constantly...
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