Distribution network reconfiguration algorithm based on network sub-dividing ring method

Abstract

The invention discloses a distribution network reconfiguration algorithm based on a network sub-dividing ring method. The distribution network reconfiguration algorithm based on the network sub-dividing ring method comprises the steps that 1, node state information and branch state information are read from a node txt document and a branch txt document; 2, a topological structure diagram is formed according to the read information, and a power network topological structure diagram is determined according to the connection relation between a branch and a node and relevant information; 3, judgment is conducted on whether a network is a correct network or not, and network judgment comprises the judgment of whether the network is an active network or not and the judgment of whether the network is a radial network or not; 4, by the adoption of the network sub-dividing ring method, sub-dividing is conducted on rings based on the current network state; 5, real-number encoding is conducted on the rings sub-divided in the fourth step; 6, the real-number encoding of all the ring sections are sequentially edited to be a chromosome, wherein correction of the chromosome is included; 7, a solution is obtained, and parameters such as size of network loss and on-off times are given. The distribution network reconfiguration algorithm based on the network sub-dividing ring method has the advantages that branch overloading and voltage exceeding are eliminated, feeder load is balanced, and the network loss is minimized.

Description

technical field [0001] The invention relates to a distribution network reconfiguration algorithm, in particular to a distribution network reconfiguration algorithm based on a network split ring method. Background technique [0002] Most of the existing algorithms take the minimum network loss as the objective function. Under various operating conditions, the distribution network reconfiguration with the minimum network loss as the objective function is still a nonlinear hybrid optimization problem. Due to the nonlinear characteristics of distribution network reconfiguration, each iteration of optimization requires a distribution network power flow calculation, and continuous distribution network power flow calculation requires a lot of computing time. In order to improve the calculation speed and ensure the global optimal or suboptimal distribution network structure, the current main reconstruction algorithms are as follows: branch exchange method, optimal flow mode method, ...

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Problems solved by technology

Moreover, the solution space is too large, so that the calculation amount is very large in the direct mathematical solution, so it takes a lot of computer time, and the reliability of convergence cannot be guaranteed

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