Detecting device for surface charge of high-voltage direct-current composite insulator

A technology of composite insulators and detection devices, which is applied in the field of power systems to achieve the effects of data transmission and reception, leakage prevention, and improved mobility

Inactive Publication Date: 2019-03-19
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the above two methods have certain limitations for measuring the charge distribution of special structure insulation

Method used

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  • Detecting device for surface charge of high-voltage direct-current composite insulator
  • Detecting device for surface charge of high-voltage direct-current composite insulator
  • Detecting device for surface charge of high-voltage direct-current composite insulator

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Embodiment Construction

[0023] The invention provides a surface charge detection device for a high-voltage direct-current composite insulator. The invention will be further described in detail below in conjunction with the accompanying drawings.

[0024] like figure 1 , shows a schematic diagram of the module of the high-voltage DC composite insulator surface charge detection device of the present invention, including a measurement and detection system, a probe control mechanism, a data transmission system, and a data receiving and processing system based on the LabVIEW software system.

[0025] Described measurement detection system mainly comprises mainly by introducing shielding cover on the basis of traditional electrostatic capacitance probe, and carries out the capacitive probe of hole design and DC operational amplifier to form; The selection input impedance of described frontal operational amplifier is The AD549LH of AD549LH, its measurement circuit adopts the form of the non-inverting input...

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Abstract

The invention provides a detecting device for surface charge of a high-voltage direct-current composite insulator. The detecting device can be particularly used for conducting surface charge detectionon the insulator of an umbrella skirt structure. The detecting device is mainly composed of four parts which include a measurement detecting system, a control mechanism, a data transmission system and a data receiving and processing system, wherein the measurement detecting system is mainly composed of a capacitance probe and a direct-current operational amplifier, and a shielding case holing design is introduced based on a traditional static capacitance probe; the control mechanism mainly comprises a direct-current stepping motor, a rotary stepping motor and a control circuit with a PIC16F877A chip being a core; the data transmission system is provided with a PIC16F877A single chip microcomputer with AD of ten digits to conduct conditioning and AD conversion on signals, a GPRS communication module and an AD conversion module are connected, and a GPRS public network platform of a mobile phone network operator is adopted for realizing wireless data transmission; the data receiving andprocessing system is based on an LabVIEW software system, a software interface mainly comprises a serial port state, a probe output value and others, and a probe output result is displayed in real time in a curve form.

Description

technical field [0001] The invention belongs to the field of power systems, in particular to the technical field of electrical detection, in particular to a surface charge detection device for a high-voltage direct-current composite insulator. Background technique [0002] With the continuous improvement of my country's transmission voltage level, composite insulators are increasingly used in transmission lines. Compared with traditional porcelain and glass insulators, composite insulators have the advantages of light weight, high strength, strong pollution flashover resistance, and convenient manufacturing and maintenance. Especially in heavily polluted areas, composite insulators will be preferred. However, if the insulator operates under the action of DC high voltage for a long time, a large amount of charge will accumulate on the surface. The surface charge distorts the original electric field of the insulator, making the distribution of the electric field extremely une...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R29/24
CPCG01R29/24
Inventor 李卫国黄晓义高泽盟杨洪达陈艳
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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