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Power distribution network reactive power optimization method and device based on data driving

A technology of data-driven and optimization method, which is applied in the direction of circuit devices, reactive power compensation, reactive power adjustment/elimination/compensation, etc., can solve the problem that the measurable node voltage data cannot fully reflect the voltage fluctuation of the target area grid, and achieve the improvement Rationality and accuracy, optimized voltage distribution, effect of simplified model

Pending Publication Date: 2021-12-03
GUANGDONG POWER GRID CO LTD
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Problems solved by technology

[0003] The purpose of the present invention is to provide a data-driven distribution network reactive power optimization method and device to solve the problem in the prior art that the limited measurable node voltage data cannot fully reflect the voltage fluctuation of the target area power grid

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  • Power distribution network reactive power optimization method and device based on data driving
  • Power distribution network reactive power optimization method and device based on data driving
  • Power distribution network reactive power optimization method and device based on data driving

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Embodiment Construction

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0041] It should be understood that the step numbers used herein are only for convenience of description, and are not intended to limit the execution order of the steps.

[0042] It should be understood that the terminology used in the description of the present invention is for the purpose of describing particular embodiments only and is not intended to limit the present invention. As used in this specification and the appended claims, the singular f...

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Abstract

The invention discloses a power distribution network reactive power optimization method and device based on data driving, and the method comprises the steps: inputting historical data into a preset lower-layer neural network for training, and obtaining a lower-layer training model and unmeasurable key node voltage data; inputting a preset upper neural network for training according to the acquired voltage data of the measurable nodes and the non-measurable key nodes of the target regional power grid and a preset switching state of discrete reactive power regulation equipment, and acquiring an upper training model and a switching action instruction of the discrete reactive power equipment; deploying the lower-layer training model and the upper-layer training model to a power distribution network in actual operation, and obtaining an overall operation model; and constructing a target function according to the operation network loss and the switching action instruction of the discrete reactive power equipment, solving the target function by adopting an A2C algorithm, and obtaining a reactive power optimization result of the power distribution network. According to the invention, the voltage distribution is optimized and the network loss is reduced by obtaining the overall operation model and combining the network loss and the switching action instruction.

Description

technical field [0001] The invention relates to the technical field of distribution network optimization, in particular to a data-driven reactive power optimization method and device for a distribution network. Background technique [0002] With the development of new energy and distributed generation technology, a large number of distributed generation (DG) is connected to the power grid, resulting in an increase in the penetration rate of the distribution network and increased uncertainty. According to statistics, only 51% of the DGs in the 10kV distribution network are connected to the dispatching master station, and the connection rate of three remotes and above is less than 10%. The medium-voltage distribution network presents a high DG penetration rate and low perception characteristics. Traditional centralized reactive power and voltage control is mostly based on swarm intelligence optimization algorithm, which requires complex calculations and requires accurate and c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/18H02J3/50
CPCH02J3/1835H02J3/50H02J2203/20Y02E40/30
Inventor 曹华珍高崇陈沛东何璇张俊潇王天霖黄烨罗强程苒黄曜林凌雪
Owner GUANGDONG POWER GRID CO LTD
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