A neural network-based method and system for double-end distance measurement of cable hybrid lines

Abstract

The invention provides a neural-network-based cable hybrid line double-terminal location method, comprising: acquiring training data; extracting training data meeting first preset conditions from the training data, calculating the extracted data in a double-terminal location mode to obtain a first location result formed between an actual fault point and a first busbar, extracting training data meeting second preset conditions from the training data, and calculating the extracted data in a preset neural network simulation location mode to obtain a second location result formed between the actual fault point and the first busbar; judging whether absolute value of a difference between the first location result and the second location result is less than a preset threshold or not; if yes, outputting the first location result as a final result for cable hybrid line fault location; if not, outputting the second location result as a final result for cable hybrid line fault location. The neural-network-based cable hybrid line double-terminal location method according to the invention is applicable to a complex power transmission line with multiple overhead cable lines alternated, can provide location results simply and reliably.

Description

technical field [0001] The invention relates to the technical field of cable hybrid transmission line fault location technology, in particular to a neural network-based double-end ranging method and system for cable hybrid lines. Background technique [0002] With the rapid development of my country's economy, the power load of cities and towns is increasing. The traditional overhead lines can no longer meet the needs of my country's cities and towns. The main reasons are: On the one hand, the construction of overhead lines will take up a lot of Land resources are not conducive to the rational use of land resources. On the other hand, criss-cross overhead lines occupy urban construction space, which is not conducive to modern urbanization. Power cables have been widely used in power grids because of their safety and reliability, and are conducive to urban modernization. Power lines have also developed from simple overhead lines in the past to overhead line-cable hybrid transm...

AI Technical Summary

Problems solved by technology

Although the double-terminal traveling wave distance measurement using the wave velocity normalization method is the most ideal for cable overhead line hybrid transmission lines, it is only used in small current transmission lines and has not been verified in high-voltage transmission hybrid lines. , which needs to be realized in future research work

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