Power distribution network rapid reconstruction method based on particle swarm and branch exchange method
A distribution network and particle swarm technology, applied to AC networks with the same frequency from different sources, AC networks with energy trade/energy transmission authority, electrical components, etc., can solve the problems of slow solution efficiency and poor convergence , to achieve the effect of improving economy, reducing network loss and saving labor cost
Active Publication Date: 2021-01-05
TIANJIN UNIV
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However, poor convergence and local optimum are important problems that evolutionary algorithms need to solve urgently.
When the general evolution algorithm solves the network reconstruction, it needs to judge the topological radioactivity of the random solution, which greatly slows down the solution efficiency
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[0030] Usually, the distribution network operates in a radial topology. The radial topology can be regarded as a tree, that is, a connected network structure that includes all nodes in the network but does not contain any loops. This patent proposes a rapid reconstruction method of distribution network based on particle swarm and branch exchange method, which combines particle swarm method and branch exchange method. Each dimension of the particle represents a branch exchange operation of the topology structure. , a new radial topology is generated through D branch switching operations on the topology, where D is the number of branches in the topology tree. Include the following steps:
[0031] 3) Initialize the particle swarm: initialize the velocity v of the particle i,j , position x i,j , 1≤i≤N, 1≤j≤D, N is the number of particle populations; D is the particle dimension, which is equal to the number of tree branches in the distribution network, and satisfies v min ≤v i,...
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The invention relates to a power distribution network rapid reconstruction method based on a particle swarm and branch exchange method. A power distribution network is of a radial topological structure and is regarded as a radial tree, namely, a connected network structure containing all nodes in the network and not containing any loop, the particle swarm method and the branch exchange method arecombined, and each dimension of particles is used for representing one branch exchange operation of the topological structure, D represents the number of tree branches of the topological structure, and a new radial topological structure is generated through D times of branch exchange operation of the topological structure; and rapid reconstruction of the power distribution network is performed accordingly.
Description
technical field [0001] The invention belongs to the field of distribution network automation, in particular to a new method for distribution network reconstruction. Background technique [0002] With the rapid development of my country's economy, the power load is increasing year by year, and the construction of urban distribution networks has also developed rapidly. The distribution network is usually designed to operate in a closed loop and open loop. It is an effective means to reduce the loss of the distribution network and improve the power quality, so it has attracted the attention of researchers. [0003] Generally, the algorithms for distribution network reconstruction can be divided into three categories: heuristic methods represented by branch exchange method and optimal flow method, evolutionary algorithms represented by particle swarm method and genetic algorithm, branch and bound as Represents the parsing method. The heuristic method has a fast calculation spee...
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IPC IPC(8): H02J3/00H02J3/06
CPCH02J3/00H02J3/008H02J3/06H02J2203/10H02J2203/20Y04S10/50
Inventor 张旭么莉
Owner TIANJIN UNIV