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A multi-objective reactive power optimization method for a power system based on a DSICA algorithm

A power system and optimization method technology, applied in reactive power compensation, system integration technology, information technology support system, etc., can solve the problems that the algorithm is easy to fall into local optimum, reduce the optimization performance of the algorithm, etc., and achieve the effect of reactive power optimization

Active Publication Date: 2018-12-28
CHONGQING UNIV OF POSTS & TELECOMM
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Problems solved by technology

In the optimization process, the imperialist algorithm updates the position information of the individual through the assimilation process of the colony and the revolution process, but in the process of moving the colony, it only depends on the position of the imperialist country of the empire where the colony is located, and does not consider other countries’ position information. The influence of the algorithm makes the algorithm easy to fall into the local optimum, thereby reducing the optimization performance of the algorithm

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  • A multi-objective reactive power optimization method for a power system based on a DSICA algorithm
  • A multi-objective reactive power optimization method for a power system based on a DSICA algorithm
  • A multi-objective reactive power optimization method for a power system based on a DSICA algorithm

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Embodiment Construction

[0082] The technical solutions in the embodiments of the present invention will be described clearly and in detail below with reference to the drawings in the embodiments of the present invention. The described embodiments are only some of the embodiments of the invention.

[0083] The technical scheme that the present invention solves the problems of the technologies described above is:

[0084] 1) Establish a multi-objective reactive power optimization mathematical model of the power system, and determine the objective function and constraints:

[0085] (1) The multi-objective mathematical model that satisfies certain constraints is:

[0086] minF=(f 1 (x, u), f 2 (x,u),...,f i (x,u),...,f M (x,u))

[0087] s.t.g j (x,u)=0,j=1,2,...,p

[0088] h k (x,u)≤0,k=1,2,...,q

[0089] In the formula, min means to take the minimum value function, F means to participate in the optimization of the objective function, f i (x,u) represents the i-th objective function, M represe...

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Abstract

The invention claims a multi-objective reactive power optimization method for a power system based on a DSICA algorithm. The method comprises the following steps of: establishing a multi-objective reactive power optimization mathematical model of a power system, and setting system parameters and algorithm parameters; initializing the individual country in the algorithm, and getting the target function value by load flow calculation; replicating individual countries to external storage spaces; performing algorithm iteration to update the individual position of the countries by using the proposed individual position updating method and distance strategy; performing non-inferior ranking and crowding distance calculation on the updated individual countries together with the previous generationof individual countries; judging whether the iterative number is satisfied, if so, entering the next step, if not, returning to the iterative number repeatedly; outputting the Pareto optimal solutionset formed by the external storage space, using a fuzzy group decision method to find the optimal compromise solution and outputting the solution. The invention has the advantages of wide searching range, strong searching ability and high solving quality in processing the multi-objective reactive power optimization problem of the electric power system, and proves the effectiveness and superiorityof the invention.

Description

technical field [0001] The invention belongs to the technical field of reactive power optimization of electric power systems, relates to the technical field of multi-objective reactive power optimization solution schemes of electric power systems, and specifically relates to a multi-objective optimization method of electric power systems based on DSICA algorithm. Background technique [0002] The power system is a large-scale and time-varying complex system, and it is a very important basic industry in the national economy. With the development of the power industry, the scale of the power system is getting larger and larger, and the safety, reliability and economy of the system have also received more and more attention. Among them, whether the reactive power optimal control of the power system is reasonable determines the quality of power Good or bad, it is of great significance to the safety, stability and economic operation of the power grid. Power system reactive power...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/18G06Q10/04G06Q50/06G06N3/00
CPCG06N3/006G06Q10/04G06Q50/06H02J3/18H02J2203/20Y02E40/30Y02E40/70Y04S10/50
Inventor 陈功贵曹佳钱洁谭晓霞李志军
Owner CHONGQING UNIV OF POSTS & TELECOMM
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