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Intelligent power distribution network random power flow method based on imperialism competition algorithm

A technology of smart distribution network and imperialism, applied in the field of power system, can solve problems such as single power flow algorithm

Active Publication Date: 2016-06-01
JIANGSU ELECTRIC POWER RES INST +3
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Problems solved by technology

[0003] Power flow calculation is the basis of power system operation analysis and planning and design. Traditional power flow methods such as the forward-backward generation method suitable for radial networks and the N-R method for ring structures cannot fully reflect the influence of system uncertainties, and a large number of DG connections Therefore, it is of great significance to study the power flow calculation method that adapts to the characteristics of the future smart distribution network.

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  • Intelligent power distribution network random power flow method based on imperialism competition algorithm
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  • Intelligent power distribution network random power flow method based on imperialism competition algorithm

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Embodiment Construction

[0073] The technical solution of the present invention will be further introduced below in combination with specific embodiments.

[0074] The invention discloses a random power flow method for intelligent distribution network based on Imperialist Competitive Algorithm (ICA), which is used to solve the uncertainty caused by the access of a large number of DGs in the future intelligent distribution network by the existing power flow algorithm Due to the increase of factors and the change of network topology, the idea of ​​cloning evolution is introduced on the basis of the original ICA, which strengthens the information exchange between empires and can adapt to pure radiation type, weak ring type and pure ring type under different DG penetration rates distribution network, and has good convergence.

[0075] The application principle of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0076] like figure 1 , figure 2 Sho...

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Abstract

The invention discloses an intelligent power distribution network random power flow method based on an imperialism competition algorithm. The intelligent power distribution network random power flow method comprises the following steps of S1, establishing random models of load, a wind power generation system and a solar photovoltaic power generation system, and generating samples for inputting random variables; S2, initializing a voltage amplitude value and a phase angle; calculating a value of a fitness function F, and determining an initial imperial; S3, performing imperial assimilation and revolution operations; S4, comparing fitness functions Fimp and Fcol of imperials and colonies, and exchanging the positions of the imperials and colonies; S5, calculating the fitness function of the overall imperial and performing imperial merging; and S6, introducing a clonal evolution operator to speed up the convergence rate of the algorithm to obtain probability distribution of output variables. According to the intelligent power distribution network random power flow method, the uncertainty of a large number of systems under DG (distributed generation) access can be reflected; pure radiation type, weak-ring type and pure annular power distribution networks under different DG permeability can be adapted; and high convergence is achieved.

Description

technical field [0001] The invention relates to the technical field of electric power systems, in particular to a random power flow method for an intelligent distribution network based on an imperialist competition algorithm. Background technique [0002] Distributed generation (Distributed generation, DG) is an effective means to solve the current energy crisis and environmental pollution problems. With the continuous reduction of unit electric energy production costs and the strong support of policies, the micro-grid with distributed power generation will be the future smart distribution network. important parts of. Due to the great uncertainty of renewable energy such as wind energy, solar energy, and load power, the operation control of the microgrid will face new challenges. [0003] Power flow calculation is the basis of power system operation analysis and planning and design. Traditional power flow methods such as the forward-backward generation method suitable for r...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/06
CPCH02J3/06H02J2203/20
Inventor 刘建坤卫鹏周前陈静徐青山黄煜
Owner JIANGSU ELECTRIC POWER RES INST
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