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System and method of evaluating state of power frequency communication channel

A channel state assessment and channel state technology, which is applied in transmission systems, character and pattern recognition, transmission monitoring, etc., can solve the problems of less research on power frequency communication channel state assessment methods, high noise in the channel environment, and constant stability. Achieve the effect of ensuring the quality of power line power frequency communication, improving the state of power frequency communication channels, and improving accuracy and intelligence

Active Publication Date: 2017-05-10
STATE GRID JIANGSU ELECTRIC POWER CO LTD TAIZHOU POWER SUPPLY BRANCH +2
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Problems solved by technology

However, since the power distribution network is not a dedicated line erected for communication, its open line environment, complex network structure, and variable load characteristics make the channel environment have characteristics such as high noise, high attenuation, and impedance mismatch.
[0003] At present, the research on the state of the power frequency communication channel mainly focuses on the power line channel noise and channel mathematical modeling, and there are few studies on the evaluation method of the power frequency communication channel state.
Moreover, the conventional channel state assessment method for industrial frequency communication is single and fixed, and cannot continuously learn and optimize the evaluation model according to changes in influencing factors, resulting in large channel state errors

Method used

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  • System and method of evaluating state of power frequency communication channel
  • System and method of evaluating state of power frequency communication channel
  • System and method of evaluating state of power frequency communication channel

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Embodiment 1

[0027] A method for evaluating the state of a power frequency communication channel includes: firstly, by collecting various parameters that affect the state of the power frequency communication channel, such as power line length, power line branch number, branch length, load impedance characteristics, power line type, and power line noise intensity, a large number of power frequency communication channel parameters are established. It is a parameter data storage and sharing platform for the state of the frequency communication channel, providing data support for the application of pattern recognition algorithms based on neural networks and deep learning to evaluate the state of the power frequency communication channel. The system evaluation method specifically uses the integrated learning model AdaBoost with adaptive characteristics to evaluate various power frequency communication channel state evaluation methods (such as expert diagnosis evaluation models based on multivaria...

Embodiment 2

[0030] A method for evaluating the state of a power frequency communication channel includes: first, based on the parameter database of the state of the power frequency communication channel, analyzing data sets such as power line length, number of power line branches, branch length, load impedance characteristics, power line type, and power line noise intensity. The expert evaluation model of variable decision tree uses the rough set theory to divide the data set collected by the power line, selects the most favorable variable set, and constructs a multivariate decision tree; then, studies the error prediction model based on the recurrent neural network (RNN), extracts the power line Features and channel state influencing factors, establish the mapping relationship between the influencing factors and the channel state, and predict the power frequency communication channel state according to the mapping; finally, on the basis of the expert analysis and evaluation results and the...

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Abstract

The invention belongs to the technical field of power frequency communication channel state analysis algorithms, and particularly relates to a method of evaluating the state of a power frequency communication channel. The method comprises steps: through acquiring data influencing the quality of the power frequency communication channel such as lengths of different power lines, the power line branch number, a branch length, load impedance characteristics, power line types and power line noise, a power frequency communication channel quality evaluation data storage and sharing platform is built; on the basis, the data are mined and calculated; and an Adaboost ensemble learning algorithm is used, through an expert analysis system and a neural network algorithm based on deep learning, the state of the power frequency communication channel under multiple parameters is evaluated comprehensively. Compared with the traditional simplex and fixed channel state evaluation method, the method of the invention can continuously learn and optimize the evaluation model according to changes of influence factors, and a more accurate channel state is obtained.

Description

technical field [0001] The invention belongs to the technical field of power frequency communication channel state analysis algorithms, and in particular relates to a power frequency communication channel state evaluation system and method. Background technique [0002] The power line carrier communication uses the existing low-voltage distribution network line as the transmission medium of the communication channel, which effectively reduces the initial erection cost and later maintenance cost of the communication line, and reduces the difficulty of equipment installation and commissioning. However, since the power distribution network is not a dedicated line erected for communication, its open line environment, complex network structure, and variable load characteristics make the channel environment have characteristics such as high noise, high attenuation, and impedance mismatch. [0003] At present, the research on the state of power frequency communication channel mainl...

Claims

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Application Information

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IPC IPC(8): H04B17/00H04B17/309H04B17/373G06K9/62G06N3/02
CPCH04B17/0082H04B17/309H04B17/373G06N3/02G06F18/285
Inventor 季昆玉甄冲杨君中欧阳利剑秦新峰
Owner STATE GRID JIANGSU ELECTRIC POWER CO LTD TAIZHOU POWER SUPPLY BRANCH
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