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On-site measurement device and a measurement method for surface charges of high-voltage direct-current bushing

A high-voltage direct current and surface charge technology, which is used in measurement devices, electrostatic field measurement, and electrical variable measurement.

Pending Publication Date: 2021-08-06
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] For this reason, an object of the present invention is to propose a kind of on-the-spot measurement device of high-voltage DC bushing surface charge, and this device can overcome the shortcoming that prior art can't measure accurately on-site, high voltage, uneven surface and large-scale structure

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  • On-site measurement device and a measurement method for surface charges of high-voltage direct-current bushing
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  • On-site measurement device and a measurement method for surface charges of high-voltage direct-current bushing

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Embodiment Construction

[0052] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0053] The on-site measurement device and method for measuring the surface charge of a high-voltage DC bushing according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0054] First, the on-site measurement device for the surface charge of a high-voltage DC bushing proposed according to an embodiment of the present invention will be described with reference to the accompanying drawings.

[0055] figure 1 It is a structural schematic diagram of an on-site measuremen...

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Abstract

The invention discloses an on-site measurement device and a measurement method for surface charges of a high-voltage direct-current bushing. The on-site measurement device comprises: a lifting platform and a stepping unit, wherein the lifting platform and the stepping unit are used for carrying out radial and axial two-dimensional stepping scanning on the high-voltage direct-current bushing; an epoxy frame which is installed on the lifting platform and the stepping unit and moves along with the lifting platform and the stepping unit, wherein the high-voltage direct-current sleeve penetrates through the center of the epoxy frame; and a plurality of induction electrodes and a signal acquisition module in the electrostatic probe scanning unit which are mounted in holes reserved in the epoxy frame. Radial and axial two-dimensional stepping scanning is carried out on the high-voltage direct-current bushing through the lifting platform and the stepping unit, the sensing electrode generates sine-rule displacement relative to the surface of the high-voltage direct-current bushing, the signal acquisition device is used for sensing sine-rule changing current, signal conversion is carried out on the current, then processing is carried out, and the surface charge density distribution of the high-voltage direct-current bushing is calculated. The device is suitable for field test, and can rapidly, safely and accurately measure the surface charge distribution condition of the high-voltage direct-current bushing.

Description

technical field [0001] The invention relates to the technical field of high voltage and surface charge measurement of insulating materials, in particular to an on-site measurement device and method for measuring the surface charge of a high-voltage DC bushing. Background technique [0002] Due to the characteristics of reverse distribution of resources and electricity demand in our country, in order to solve the problem of energy distribution and unbalanced demand and realize the optimal allocation of national energy, it is necessary to implement the development of national networking, west-to-east power transmission, north-to-south power supply, and energy optimal allocation. strategy. With the continuous development of the DC transmission system, the converter transformer, as the key power equipment to complete the AC-DC conversion, needs to carry the full voltage and full current of the system, and is at the core of the entire power grid. Converter transformer valve side...

Claims

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Application Information

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IPC IPC(8): G01R29/24G01R29/14
CPCG01R29/24G01R29/14
Inventor 周远翔张云霄王雪伟张征辉白正张灵陈健宁滕陈源黄欣
Owner TSINGHUA UNIV
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