Novel configuration strategy of customized power equipment

Abstract

The present invention discloses a novel configuration strategy of customized power equipment. The novel configuration strategy is characterized in that: the hybrid strategy uses a genetic algorithm tolock the optimal installation position of each device and obtain an approximate optimal installation capacity; the approximate capacity is set as the initial value of the interior point method to look for a more accurate and better installation capacity; and in addition, the genetic algorithm and the interior point method are improved respectively based on constraint violation and predictive adaptation, so that the optimization speed is improved. The intelligent hybrid algorithm disclosed by the present invention combines the advantages of the strong global search ability and easy handling ofdiscrete variables of the genetic algorithm, and the strong local search ability and the accurate calculation result of the nonlinear interior point method, and solves the defects of premature convergence and poor stability of the genetic algorithm; and the application of the algorithm in the optimal configuration of the customized power equipment, on the premise of satisfying the power quality improvement objective, the investment in equipment is reduced as low as possible, a reference is provided for the optimal configuration of the power quality improvement device, and the novel configuration strategy has certain practical application value.

Description

technical field [0001] The invention belongs to the field of optimal configuration, and in particular relates to a novel optimal configuration strategy for various customized electric equipments which organically combines genetic algorithm and interior point method. Background technique [0002] There are various power quality problems in the operation of distribution network, such as distribution network harmonic problem, voltage fluctuation and flicker, low power factor and so on. It not only affects the normal operation of user equipment, increases the burden on the power supply end, but also pollutes the public power grid. Customized power equipment can cost-effectively improve power quality problems and has been widely used. Active filter (APF), distribution network static synchronous compensator (D-STATCOM) and dynamic voltage restorer (DVR) are the most common customized power equipment in distribution system with mature research technology and practical application....

AI Technical Summary

Problems solved by technology

However, although the intelligent algorithm has its unique advantages, such as strong robustness and easy handling of nonlinear and discrete problems, its solution accuracy is not as high as that of traditional numerical algorithms.

In addition, the interior point method cannot be used alone on such optimal configuration problems due to its inability to deal with discrete variables and high requirements on the initial point.

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