DG-containing power distribution network reconstruction method based on variant firefly algorithm

Abstract

The invention belongs to the technical field of power distribution network reconstruction, and particularly relates to a DG-containing power distribution network reconstruction method based on a variation firefly algorithm, which comprises the following steps: step 1, establishing a power distribution network reconstruction mathematical model; wherein the network loss comprises the network loss before reconstruction, the network loss after reconstruction, the reconstructed network loss influence quantity and the network loss influence quantity of the DG, and finally obtaining a target function; step 2, constructing a variation firefly algorithm; and step 3, combining the target function obtained in the step 1 and the variable firefly algorithm in the step 2, and applying the variable firefly algorithm to the reconstruction of the DG-containing power distribution network to obtain the optimal switch combination of the power distribution network reconstruction and the corresponding DG capacity. A novel mutation firefly algorithm is applied to the power distribution network reconstruction process under the condition that different DG capacities are accessed to the power distribution network, and the mutation firefly algorithm introduces a mutation mechanism to a basic firefly algorithm, so that the search efficiency and performance of the algorithm are improved.

Description

technical field [0001] The invention belongs to the technical field of distribution network reconfiguration, and in particular relates to a DG-containing distribution network reconfiguration method based on a variant firefly algorithm. Background technique [0002] With the improvement of the distribution network automation level, the complexity of its planning and operation has become increasingly high. In order to ensure the safe and stable operation of the distribution network, the investment in power distribution equipment continues to increase, resulting in an increase in distribution network loss year by year. The data shows that 10-13% of network losses in the power system occur on the distribution side, which poses a challenge to the goal of energy conservation and at the same time reduces the voltage quality of the power distribution system. [0003] Distribution network reconfiguration is an important means to optimize the distribution network to reduce network los...

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However, the above algorithm reduces the convergence ability under the influence of mu

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