Composite insulator icing growth monitoring system based on capacitance effect

A composite insulator and capacitance effect technology, applied in the direction of material capacitance, etc., can solve problems such as the analysis of ice-covered growth of difficult insulators, and achieve good results

Inactive Publication Date: 2019-05-24
XI'AN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As far as the icing monitoring technology is concerned, the image method and the weighing method are relatively mature at present. However, most of the above methods are aimed at measuring the ice growth quality or ice thickness of the wire, and it is difficult to analyze the icing growth of the insulator.

Method used

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  • Composite insulator icing growth monitoring system based on capacitance effect
  • Composite insulator icing growth monitoring system based on capacitance effect
  • Composite insulator icing growth monitoring system based on capacitance effect

Examples

Experimental program
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Embodiment

[0037] The designed composite insulator 10-1 is 4 pieces of insulator sheds, wherein the lower surface of the second insulator shed and the upper surface of the third insulator shed are attached with interdigitated capacitor plates 10-2, which coat the insulators with ice Growth measurement area. In order to be basically consistent with the droplet adhesion characteristics on the surface of the original composite insulator, after the capacitor electrode plate is attached, the surface needs to continue to be coated with anti-fouling flashover paint. The 1st and 4th insulator sheds are mainly used for comparison and reference. They will form another two sets of shed spacing with the 2nd and 3rd insulator sheds (interdigitated capacitor electrodes), so that the ice-covered measurement area is no longer independent. The airflow field and droplet collision characteristics of umbrella spacing used for icing measurement are closer to the actual situation.

[0038] The composite insu...

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Abstract

The invention discloses a composite insulator icing growth monitoring system based on a capacitance effect. The composite insulator icing growth monitoring system comprises a microprocessor and is characterized in that a relay set, a sigma-delta capacitor digital convertor, an A/D convertor, a photoelectric isolation circuit, an RS485 circuit, a storage module, a watchdog, a communication module and a power management module are connected to the microprocessor, an insulator icing sensor is connected to the relay set, a tension sensor is connected to the A/D convertor, the tension sensor is connected with the insulator icing sensor, and the power management module is further connected with the communication module. The composite insulator icing growth monitoring system is capable of achieving the online monitoring of power transmission line icing and the like and providing reference for power transmission line intelligent management.

Description

technical field [0001] The invention belongs to the technical field of state monitoring and diagnosis of transmission lines, and in particular relates to a monitoring system for icing growth of composite insulators based on capacitance effects. Background technique [0002] In the power system, the transmission line is an important part of power transmission, and its safe operation is an important factor to ensure the ability of power transmission. In recent years, with the continuous promotion of ultra-high voltage lines and ultra-high voltage lines, more lines need to pass through heavy ice-covered areas. Incidents such as downed towers, broken lines, and flashovers of transmission lines caused by icing occur from time to time, and they cannot be ignored more and more. Composite insulators are composed of glass fiber epoxy resin lead rods, silicone rubber shed fittings and other components. They are small in size, light in weight, strong in shock resistance and impact res...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/22
Inventor 朱永灿薛智鹏黄新波黄艳琛
Owner XI'AN POLYTECHNIC UNIVERSITY
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