Method for predicting state quantity of cable, and method and device for determining operation state of cable

A state quantity and cable technology, which is applied in the field of cable state quantity prediction and determination of cable operating state

Active Publication Date: 2021-01-22
CHINA ELECTRIC POWER RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention proposes a method for predicting the state quantity of a cable, a method and a device for determining the operating state of the cable, aiming at solving the problem of accurate prediction and evaluation of the cable

Method used

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  • Method for predicting state quantity of cable, and method and device for determining operation state of cable
  • Method for predicting state quantity of cable, and method and device for determining operation state of cable
  • Method for predicting state quantity of cable, and method and device for determining operation state of cable

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Embodiment 1

[0194]Table 3 shows the classification of fault types according to Embodiment 1 of the present invention. As shown in Table 3, each fault type is divided into different fault symptoms, and each fault symptom corresponds to the total number of times a single state quantity exceeds the standard and the number of times a single state quantity exceeds the standard.

[0195]Table 3 Classification of fault types in Example 1

[0196]

[0197]According to the data in Table 3, the weight coefficient is calculated.

[0198]

[0199]

[0200]

[0201]

[0202]Table 4 shows the weight coefficient value of each fault symptom in each fault category calculated by the above formula.

[0203]Table 4 Fault weight coefficient of Example 1

[0204]

[0205]Table 5 shows the relative degradation degree of each failure symptom.

[0206]Table 5 The relative degradation degree of the failure symptoms of Example 1

[0207]

[0208]According to the relative degradation degree and weight coefficient, the following formula is used to calculate the sc...

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Abstract

The invention discloses a method for predicting the state quantity of a cable, and a method and a device for determining the operation state of the cable. The method for predicting the state quantityof the cable comprises the steps of obtaining a time sequence of the state quantity of a to-be-predicted cable; performing data division on the time sequence S of the state quantity to obtain a divided sequence F; and predicting the divided sequence F by adopting a pre-constructed long short term memory LSTM model to obtain a predicted value of the sequence F. According to the cable state quantityprediction method, the method and the device for determining the operation state of the cable, and the cable line multi-operation state deduction method based on the LSTM model provided by the embodiment of the invention, multi-state quantity joint deduction of a single node is carried out for a plurality of state quantity continuous time sequences; big data analysis of the state quantity of thehigh-voltage cable is realized, the accuracy of cable state prediction is improved, technical support is provided for state deduction and evaluation of the high-voltage cable, and the operation reliability of the high-voltage transmission cable is guaranteed.

Description

Technical field[0001]The present invention relates to the field of cable state monitoring, in particular, to a method for predicting the state quantity of a cable, a method and a device for determining the running state of the cable.Background technique[0002]With the economic development, my country's cable construction is in a period of rapid development. However, different cables have different manufacturing processes and different laying conditions. They are subjected to the combined effects of electricity, heat, and machinery during operation, and are also affected by the natural environment (temperature, air pressure, humidity, and pollution, etc.). The long-term operation of the cable will It will cause insulation aging, fatigue, and abrasion, so that the insulation performance of the cable will gradually decline, and the reliability of the equipment will gradually decrease, thereby threatening the operational reliability of the power system. In order to ensure the reliable op...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04G06Q50/06G06K9/62G06N3/04
CPCG06Q10/04G06Q50/06G06N3/049G06F18/241G06F18/214
Inventor 欧阳本红王昱力夏荣王格李文杰邓显波刘松华费雯丽刘宗喜赵鹏张振鹏
Owner CHINA ELECTRIC POWER RES INST
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