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Power distribution network reactive power optimization method and device based on immune genetic algorithm

A technology of immune genetic algorithm and optimization method, applied in the field of reactive power optimization of distribution network based on immune genetic algorithm, to achieve good safety and stability, reasonable reactive power distribution, and small reactive power capacity

Pending Publication Date: 2022-01-07
GUANGDONG POWER GRID CO LTD +1
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Problems solved by technology

[0005] The invention provides a distribution network reactive power optimization method and device based on the immune genetic algorithm to solve the problem of reactive power optimization of the power system in nonlinear mathematical programming, realize a more reasonable distribution of reactive power in the distribution network system, and improve the efficiency of the distribution network. terminal voltage and power factor while enhancing power system safety and stability

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  • Power distribution network reactive power optimization method and device based on immune genetic algorithm
  • Power distribution network reactive power optimization method and device based on immune genetic algorithm
  • Power distribution network reactive power optimization method and device based on immune genetic algorithm

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Embodiment 1

[0035] Please refer to figure 1 , figure 1 An immune genetic algorithm-based reactive power optimization method for a distribution network provided for an embodiment of the present invention includes steps S1 to S3; wherein,

[0036] Step S1, obtain the node voltage of the generator, the switching gear of the reactive power compensation device and the adjustable gear of the transformer tap according to the preset distribution network system parameters, and calculate the node voltage of the generator, the switching gear of the reactive power compensation device The switching gear and the adjustable gear of the transformer tap serve as the initial antibody.

[0037] In this embodiment, the distribution network system parameters are input, and the distribution network system parameters include generator parameters, line parameters, transformer parameters, load parameters, reactive power compensation equipment parameters and constraints corresponding to all variables. These para...

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Abstract

The invention provides a power distribution network reactive power optimization method and device based on an immune genetic algorithm. The method mainly comprises the steps of: obtaining initial antibodies according to preset power distribution network system parameters and immune genetic algorithm parameters, and carrying out the iterative calculation of the initial antibodies; updating the affinity of each initial antibody through a preset power flow algorithm in iterative calculation, and performing evolution operation on the initial antibodies according to the updated affinity until the number of times of iterative calculation reaches a preset value to obtain iterative antibodies; and calculating a reactive power optimization result of the power distribution network according to the iterative antibodies, and performing reactive power optimization on the power distribution network according to the reactive power optimization result. The antibodies are iterated and the power distribution network is optimized through the improved immune genetic algorithm, so that the reactive capacity is minimum while the voltage loss of a compensation line is ensured. Compared with the prior art, the method and device make the reactive power distribution of the power distribution network system more reasonable, and have better safety and stability.

Description

technical field [0001] The invention relates to the field of reactive power optimization of distribution networks, in particular to a method and device for reactive power optimization of distribution networks based on immune genetic algorithm. Background technique [0002] At present, power system voltage control is largely constrained by reactive power optimization control problems. For the distribution network, the root cause of the low voltage at the user end is that the voltage is greatly lost during the transmission of the transmission line, and the voltage delivered to the user end is lower than the specified voltage. Only by finding out the factors that affect the voltage loss on the distribution network line can the current situation of low voltage at the end of the distribution network be solved. [0003] A large number of power users use induction motors and other inductive electrical equipment, which requires the power system to supply a large amount of reactive ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/18H02J3/46H02J3/06G06N3/12
CPCH02J3/18H02J3/46H02J3/06G06N3/126Y02E40/30
Inventor 李经儒潘峰杨雨瑶蔡永智危阜胜
Owner GUANGDONG POWER GRID CO LTD
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