CN-122026950-A - Attention mechanism-based power line communication sensing method and system

CN122026950ACN 122026950 ACN122026950 ACN 122026950ACN-122026950-A

Abstract

The invention provides a power line communication sensing method and a system based on an attention mechanism, which are characterized in that an impedance disturbance array is used for executing disturbance on a power line channel and recording channel response, a channel perception report is generated according to the channel response, a disturbance response base dictionary is constructed, double attention distribution is obtained through a real-time channel perception report, information to be transmitted and a historical disturbance effect, a disturbance strategy matrix is generated according to the double attention distribution, a disturbance mode combination is obtained by combining the disturbance response base dictionary, disturbance is executed on the power line channel through the disturbance strategy matrix and the disturbance mode combination, an updated channel perception report is obtained, and power line communication perception is carried out according to the updated channel perception report.

Inventors

YU HAIWEI
LIN JIAYI
DENG QINGTANG
Jiang Weihuang
HAN CHAO
TANG MUSEN

Assignees

南方电网数字电网研究院股份有限公司

Dates

Publication Date: 20260512
Application Date: 20260211

Claims (9)

1. The power line communication perception method based on the attention mechanism is characterized by comprising the following steps: Performing disturbance on a power line channel based on the impedance disturbance array, recording channel response, generating a channel perception report based on the channel response, and constructing a disturbance response base dictionary; acquiring double-attention distribution based on a real-time channel perception report, information to be transmitted and a historical disturbance effect, generating a disturbance strategy matrix based on the double-attention distribution, and acquiring a disturbance mode combination by combining a disturbance response base dictionary; performing disturbance on the power line channel based on the disturbance strategy matrix and the disturbance mode combination to acquire an updated channel perception report; And carrying out power line communication sensing based on the updated channel sensing report.
2. The attention mechanism based power line communication awareness method of claim 1 wherein performing perturbation on a power line channel based on an impedance perturbation array and recording channel responses, generating a channel awareness report based on the channel responses and constructing a perturbation response base dictionary, comprising: Arranging an impedance disturbance array in a power line network by adopting distributed port layout; Changing the impedance state of the power line port based on the impedance disturbance array, and carrying out utilization disturbance and exploratory disturbance on the intrinsic transmission mode of the power line channel; Recording the power line channel port parameter change corresponding to each disturbance in real time, and obtaining channel response data; and generating a channel perception report based on the channel response data, and arranging the corresponding relation between the disturbance mode and the channel response to construct a disturbance response base dictionary.
3. The power line communication sensing method based on the attention mechanism according to claim 2, wherein the utilitarian disturbance is represented by disturbance of a frequency band and a position in a power line channel, which adapt to disturbance communication and sensing requirements, and the exploratory disturbance is represented by disturbance of a frequency band and a position in the power line channel, which have large fluctuation and undefined disturbance effect.
4. The power line communication sensing method based on an attention mechanism of claim 1, wherein obtaining a dual attention distribution based on a real-time channel sensing report, information to be transmitted and a history disturbance effect, generating a disturbance strategy matrix based on the dual attention distribution, and obtaining a disturbance pattern combination in combination with a disturbance response base dictionary, comprises: inputting a real-time channel perception report, information to be transmitted and a historical disturbance effect into a dual-attention disturbance strategy engine, and acquiring frequency domain attention distribution and spatial attention distribution based on the dual-attention disturbance strategy engine; generating a disturbance strategy matrix based on the frequency domain attention distribution and the spatial attention distribution, wherein elements in the disturbance strategy matrix represent disturbance intensity of each position in each frequency band; And setting a screening threshold value, screening a disturbance mode combination with high disturbance intensity from a disturbance strategy matrix based on the disturbance response base dictionary by combining the screening threshold value.
5. The attention mechanism based power line communication awareness method of claim 4 wherein the dual attention perturbation based strategy engine obtains a frequency domain attention profile and a spatial attention profile comprising: the dual attention perturbation strategy engine comprises a frequency domain attention subnet and a spatial attention subnet; the frequency domain attention distribution is acquired based on the frequency domain attention sub-network, and the spatial attention distribution is acquired based on the spatial attention sub-network.
6. The attention mechanism based power line communication awareness method of claim 1 wherein performing perturbation to a power line channel based on a perturbation strategy matrix and perturbation pattern combination to obtain an updated channel awareness report comprises: The impedance disturbance array executes differential disturbance on the disturbance mode combination according to the disturbance intensity of the disturbance strategy matrix; Measuring scattering parameters of a power line network port in real time, acquiring scattering parameters under a non-disturbance reference, and acquiring scattering parameter variation; and updating channel state data of each frequency band and each position based on the scattering parameter variation, and generating an updated channel perception report.
7. The attention mechanism based power line communication awareness method of claim 6 wherein the impedance perturbation array performs differential perturbation on the perturbation pattern combinations in accordance with the perturbation intensities of the perturbation strategy matrix, comprising: setting a disturbance intensity threshold, defining disturbance intensity which is larger than or equal to the disturbance intensity threshold as high disturbance intensity, and combining disturbance modes with the high disturbance intensity to use disturbance parameters of multistage impedance switching; and positioning the disturbance dynamic intensity smaller than the disturbance intensity threshold value to low disturbance intensity, and combining disturbance modes of the low disturbance intensity to use disturbance parameters of binary impedance switching.
8. The power line communication perception method based on an attention mechanism according to claim 1, wherein the power line communication perception is performed based on an updated channel perception report, comprising: filtering the variation of the scattering parameter in the updated channel perception report; Projecting the filtered scattering parameter variation to a disturbance response base dictionary, and carrying out information decoding by combining a sparse decomposition algorithm to obtain a decoding result, a projection coefficient and a residual error; acquiring a channel perception state based on the projection coefficient and the residual error, and performing multidimensional analysis on the residual error to acquire a channel perception position; And performing power line communication sensing based on the decoding result, the channel sensing state and the channel sensing position.
9. A power line communication awareness system based on an attention mechanism for implementing the method of any of claims 1-8, comprising: The disturbance module is used for executing disturbance on the power line channel based on the impedance disturbance array, recording channel response, generating a channel perception report based on the channel response, executing disturbance on the power line channel based on a disturbance strategy matrix and disturbance mode combination, and acquiring an updated channel perception report; the construction module is used for constructing a disturbance response base dictionary; The processing module acquires double-attention distribution based on a real-time channel perception report, information to be transmitted and a historical disturbance effect, generates a disturbance strategy matrix based on the double-attention distribution, and acquires a disturbance mode combination by combining a disturbance response base dictionary; and the sensing module is used for sensing power line communication based on the updated channel sensing report.

Description

Attention mechanism-based power line communication sensing method and system Technical Field The invention relates to the technical field of power communication, in particular to a power line communication sensing method and system based on an attention mechanism. Background Along with the deep penetration of the Internet of things technology to the power system, the cooperative communication and perception of the power line communication system becomes a key direction for improving the reliability of data transmission, accurately grasping the channel state and optimizing the power resource scheduling. However, the conventional power line communication sensing scheme often has some problems, the conventional experience-driven communication sensing design depends on manual disturbance mode selection and channel adaptation, is not suitable for a complex power line interference environment, and is easy to cause problems of mismatching of disturbance and channel characteristics, low sensing precision and the like, so that the scheme is poor in feasibility, and secondly, the problem of poor quantization cooperativity exists, namely, only the communication rate or cost control is concerned to ignore channel sensing requirements, or a dynamic adaptation mechanism for frequency band and position difference is lacked, so that the system resource waste and the communication sensing stability are insufficient. Therefore, a technical solution with dual-attention dynamic adaptation and differential interference capability is needed, so as to improve the accuracy and stability of power line communication perception in a complex interference environment. Disclosure of Invention In view of the above-mentioned problems, in combination with the first aspect of the present invention, an embodiment of the present invention provides a power line communication sensing method based on an attention mechanism, the method including: Performing disturbance on a power line channel based on the impedance disturbance array, recording channel response, generating a channel perception report based on the channel response, and constructing a disturbance response base dictionary; acquiring double-attention distribution based on a real-time channel perception report, information to be transmitted and a historical disturbance effect, generating a disturbance strategy matrix based on the double-attention distribution, and acquiring a disturbance mode combination by combining a disturbance response base dictionary; performing disturbance on the power line channel based on the disturbance strategy matrix and the disturbance mode combination to acquire an updated channel perception report; And carrying out power line communication sensing based on the updated channel sensing report. In still another aspect, an embodiment of the present invention further provides a power line communication sensing system based on an attention mechanism, including: The disturbance module is used for executing disturbance on the power line channel based on the impedance disturbance array, recording channel response, generating a channel perception report based on the channel response, executing disturbance on the power line channel based on a disturbance strategy matrix and disturbance mode combination, and acquiring an updated channel perception report; the construction module is used for constructing a disturbance response base dictionary; The processing module acquires double-attention distribution based on a real-time channel perception report, information to be transmitted and a historical disturbance effect, generates a disturbance strategy matrix based on the double-attention distribution, and acquires a disturbance mode combination by combining a disturbance response base dictionary; and the sensing module is used for sensing power line communication based on the updated channel sensing report. Compared with the prior art, the method has the advantages that the attention weight is calculated from the frequency domain and the space by the double-attention sub-network, channel characteristic differences of different frequency bands and different positions are accurately identified, a disturbance strategy matrix is generated, the time-varying characteristics of a power line channel can be dynamically adapted by adopting a differential disturbance strategy, targeted noise suppression is realized by combining attention filtering, redundant noise components are automatically removed by a sparse decomposition algorithm, so that accuracy of communication decoding and accuracy of perception are improved, and accuracy and stability of power line communication perception in a complex interference environment are improved by the technical scheme with double-attention dynamic adaptation and differential disturbance capability. Drawings FIG. 1 is a flow chart of steps of a power line communication awareness method based on an attention mechanism of the present invention;