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Power line channel distribution parameter identification method and system based on improved fish swarm algorithm

A power line channel and distribution parameter technology, which is applied in the direction of electrical digital data processing, calculation, calculation model, etc., to reduce redundant search steps, improve accurate search results, and facilitate implementation.

Inactive Publication Date: 2018-10-19
STATE GRID SHANDONG ELECTRIC POWER +2
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Problems solved by technology

[0005] Aiming at the attenuation problem of China's smart grid broadband power line carrier communication channel, the present invention provides a power line channel distribution parameter identification method and system based on the improved fish swarm algorithm

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  • Power line channel distribution parameter identification method and system based on improved fish swarm algorithm
  • Power line channel distribution parameter identification method and system based on improved fish swarm algorithm
  • Power line channel distribution parameter identification method and system based on improved fish swarm algorithm

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Embodiment Construction

[0033] In order to illustrate the present invention and / or the technical solutions in the prior art more clearly, the specific implementation manners of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention, and those skilled in the art can obtain other accompanying drawings based on these drawings and obtain other implementations.

[0034] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0035] The specific implementation manners of the present invention will be described below in conjunction with the accompanying dr...

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Abstract

The invention discloses a power line channel distribution parameter identification method based on an improved fish swarm algorithm. The method at least comprises the following steps: S100 obtaining atransmission attenuation model reflecting the corresponding relationship between the distribution parameter and the transmission attenuation characteristic of the power line channel based on the transmission line theory; S200 pre-measuring the transmission attenuation characteristic of the power line channel to obtain the pre-measured data of the transmission attenuation characteristic; S300 taking the sum of the square of the theoretical simulation value of the transmission attenuation characteristic and the square of the error value of the pre-measured data as the objective function, takingthe reciprocal of the objective function as the fitness function, and substituting the distribution parameter as the fish swarm coordinates into the fish swarm algorithm for optimization. The theoretical simulation value of the transmission attenuation characteristic is obtained by using the transmission attenuation model. The invention can improve search efficiency brought by clustering behavior, reduce redundant search steps of the fish swarm at a local optimum value, improve accurate search results, and accurately reflect attenuation characteristics of signals in a low-voltage broadband power network environment.

Description

technical field [0001] The invention relates to the technical field of power line carrier communication, in particular to a power line channel distribution parameter identification method and system based on an improved fish swarm algorithm. Background technique [0002] Power line carrier communication is a communication method that uses power lines as the information transmission medium for voice or data transmission. Low-voltage broadband power line carrier communication can effectively solve the "last mile" broadband access problem and meet the development needs of "four networks in one". Due to the complex line topology in the broadband power line communication channel environment, numerous branch lines and distribution transformers will affect the transmission of the carrier signal on the distribution line, making it difficult to guarantee the transmission requirements. Based on this scenario, only by fully studying the power line channel model and establishing a unif...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50G06N3/00
CPCG06N3/006G06F30/18G06F30/20
Inventor 徐晓寅刘志永李伟马帅苑超冯希军赵子齐吕志勇段义勇
Owner STATE GRID SHANDONG ELECTRIC POWER
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