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Ring main unit cable joint state judgment method

A technology for cable joints and state discrimination, applied in the field of electric power information, can solve problems such as power accidents, insulation performance degradation, and influence on normal power supply, and achieve the effect of timely warning and prevention of electric power accidents

Inactive Publication Date: 2021-11-12
BAIHE POWER SUPPLY BUREAU OF GUANGXI POWER GRID CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the loss of electrical equipment, cable overload, product quality, and irregular installation, etc., the cable joint will be discharged and overheated, and the temperature state of the cable joint cannot be effectively evaluated. If the temperature of the cable joint is too high , easily lead to insulation performance degradation, damage, etc., and then lead to electrical accidents and affect the normal power supply

Method used

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  • Ring main unit cable joint state judgment method
  • Ring main unit cable joint state judgment method
  • Ring main unit cable joint state judgment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Such as figure 1Shown:

[0044] S101. The data collection terminal collects the current signal and the temperature signal of the cable joint, and sends them to the monitoring terminal;

[0045] The data collection terminal collects the first current signal, the second current signal, the third current signal...the Nth current signal of the cable joint, and sends it to the monitoring terminal; the data collection terminal collects the first temperature signal, the second temperature signal, the Three temperature signals...the Nth temperature signal, and sent to the monitoring terminal; the first current signal corresponds to the first temperature signal, the second current signal corresponds to the second temperature signal, the third current signal corresponds to the third temperature signal...the Nth current The signal corresponds to the Nth temperature signal.

[0046] S102. The monitoring terminal receives the current signal and the temperature signal sent by the d...

Embodiment 2

[0055] Such as figure 2 Shown:

[0056] S201. The data collection terminal collects the current signal and the temperature signal of the cable joint, and sends them to the monitoring terminal;

[0057] The data collection terminal collects the first current signal, the second current signal, the third current signal...the Nth current signal of the cable joint, and sends it to the monitoring terminal; the data collection terminal collects the first temperature signal, the second temperature signal, the Three temperature signals...the Nth temperature signal, and sent to the monitoring terminal; the first current signal corresponds to the first temperature signal, the second current signal corresponds to the second temperature signal, the third current signal corresponds to the third temperature signal...the Nth current The signal corresponds to the Nth temperature signal.

[0058] S202. The monitoring terminal receives the current signal and the temperature signal sent by the...

Embodiment 3

[0067] Such as image 3 Shown:

[0068] S301. The data collection terminal collects the current signal and the temperature signal of the cable joint, and sends them to the monitoring terminal;

[0069] The data collection terminal collects the first current signal, the second current signal, the third current signal...the Nth current signal of the cable joint, and sends it to the monitoring terminal; the data collection terminal collects the first temperature signal, the second temperature signal, the Three temperature signals...the Nth temperature signal, and sent to the monitoring terminal; the first current signal corresponds to the first temperature signal, the second current signal corresponds to the second temperature signal, the third current signal corresponds to the third temperature signal...the Nth current The signal corresponds to the Nth temperature signal.

[0070] S302. The monitoring terminal receives the current signal and the temperature signal sent by the ...

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Abstract

The invention discloses a ring main unit cable joint state judgment method, which comprises the following steps that a data acquisition terminal acquires a current signal and a temperature signal of a cable joint and sends the current signal and the temperature signal to a monitoring terminal; the monitoring terminal receives the current signal and the temperature signal sent by the data acquisition terminal, and searches the same current signal in a current-temperature database; temperature signal difference calculation is carried out on the collected temperature signal and the temperature signal corresponding to the searched same current signals; in unit time, if the temperature signal difference value is continuously smaller than a first temperature difference value threshold value, it is judged that the temperature signal is normal; and the monitoring terminal displays that the temperature signal difference value of the cable joint is normal. According to the invention, the temperature state of the cable joint of the ring main unit is distinguished, so that timely early warning is achieved, and electric power accidents are prevented.

Description

technical field [0001] The invention relates to the field of electric power information, in particular to a method for judging the state of a cable joint of a ring network cabinet. Background technique [0002] There are a large number of power ring network cabinets with a wide range of distribution. They are important components and control contacts of urban power supply networks. The operating status of ring network cabinets is directly related to the reliability of urban power supply systems. The cable connector is an important component of the ring network cabinet, and the temperature state of the ring network cabinet connector is a key indicator to measure whether the ring network cabinet is running normally. Due to the loss of electrical equipment, cable overload, product quality, and irregular installation, etc., the cable joint will be discharged and overheated, and the temperature state of the cable joint cannot be effectively evaluated. If the temperature of the ca...

Claims

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Application Information

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IPC IPC(8): G01D21/02
CPCG01D21/02
Inventor 尚淑宁刘长华陈金商琼玲梁广生肖蔚农谢潘冬秋陈霄
Owner BAIHE POWER SUPPLY BUREAU OF GUANGXI POWER GRID CO LTD
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