Comprehensive optimization operation method for power distribution network
A technology for optimizing operation and distribution network, applied in complex mathematical operations, electrical digital data processing, instruments, etc.
Inactive Publication Date: 2020-10-30
STATE GRID CORP OF CHINA +2
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Problems solved by technology
[0005] The distribution network reconstruction is a nonlinear combination optimization problem, and the reactive power optimization of the distribution network is a nonlinear integer programming problem. The comprehensive optimization of the two will make the solution more difficult and complicated. Traditional mathematical methods have long calculation time and difficult convergence. Therefore, relevant scholars have applied heuristic methods and artificial intelligence methods to the comprehensive optimization of distribution networks.
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[0043] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. The following description of at least one exemplary embodiment is merely illustrative in nature and in no way serves as any limitation of the application, its application or uses. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.
[0044] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, a...
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The invention discloses a comprehensive optimization operation method for a power distribution network, and the method comprises the steps: constructing a high-dimensional random matrix, extracting asystem feature from the operation data of the power distribution network as the input of a model, taking a switching state as the output, training a stage 1 support vector machine, and recognizing thetopological structure of the current power distribution network; and training a support vector machine in the stage 2 by taking the extracted system characteristics and the switch state as input andtaking a reactive power control strategy as output, learning a nonlinear mapping relationship between the input and the output, and establishing a power distribution network comprehensive optimizationmodel based on a two-stage support vector machine combination decision. The method does not depend on the model and parameters of the power distribution network, is high in online decision-making speed and high in adaptability, can effectively cope with inaccuracy of the model and parameters of the power distribution network and uncertainty caused by DG large-scale grid connection, and provides anew way for optimization operation of the complex power distribution network.
Description
technical field [0001] The invention relates to a comprehensive optimization operation method of a distribution network, which belongs to the technical field of power grid operation. Background technique [0002] Distribution network reconfiguration and reactive power optimization of distribution network are important technical means for optimal operation of distribution network. Distribution network reconfiguration is to obtain the network topology under the optimal optimization target value by changing the closure of network switches. Under the premise of higher voltage level, the goal of minimum active power loss is achieved. [0003] Distribution network reactive power optimization refers to the distribution network structure parameters and load conditions given, under the premise of satisfying all constraints, by adjusting the reactive power output of the power supply, transformer transformation ratio and reactive power compensation size to make the distribution network...
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IPC IPC(8): G06K9/62G06F16/2458G06F17/16G06Q50/06
CPCG06F16/2474G06Q50/06G06F17/16G06F18/214G06F18/2411Y02E40/70Y04S10/50Y02T10/40Y02D10/00
Inventor 李振伟王晶丁斌赵天翊马涛李志雷邢志坤
Owner STATE GRID CORP OF CHINA