Converter transformer oil paper insulation surface charge measurement device

A converter transformer and oil-paper insulation technology, applied in measuring devices, measuring electrical variables, instruments, etc., can solve problems such as complex design and manufacture of converter transformers

Active Publication Date: 2016-11-09
ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This makes the converter transformer more complex than ordinary power transformers both in design and in manufacturing.

Method used

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  • Converter transformer oil paper insulation surface charge measurement device
  • Converter transformer oil paper insulation surface charge measurement device
  • Converter transformer oil paper insulation surface charge measurement device

Examples

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Embodiment Construction

[0025] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0026] It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as...

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Abstract

The invention relates to an oil paper insulation surface charge measurement device, which comprises a supporting mechanism, a charge injection mechanism and a surface potential measurement mechanism, wherein the supporting mechanism is an engineering insulation and comprises a platform for placing a to-be-measured oil paper insulation and a support arranged above the platform, and is provided with a mobile sample loading table; one end of an output power supply is connected with a needle electrode via a wire, and the other end is grounded via the wire; the needle electrode is fixed on the support and a preset distance is kept with the to-be-measured oil paper insulation; an earthing electrode is arranged at the lower side of the oil paper insulation and is grounded via a wire; one end of a surface potentiometer is connected with a detection probe and the other end is connected with a data collector; the detection probe is fixed on the support and a preset distance is kept with the to-be-measured oil paper insulation. Through using the oil paper insulation surface charge measurement device, a test sample can be moved quickly, surface voltage and surface charge change features of the insulation oil paper in various voltage conditions can be quickly and conveniently detected, and the charge transport features are understood more profoundly.

Description

technical field [0001] The invention relates to the technical field of charge measurement, in particular to a device for measuring surface charge of oil-paper insulation of a converter transformer. Background technique [0002] The main insulation inside the converter transformer is generally oil-paper composite insulation. Although the insulation structure adopts a conservative design, insulation failures often occur in the main insulation of the valve side in actual operation. This is due to the particularity of the working conditions. The converter transformer is the core equipment connecting the converter station and the inverter station at both ends of the AC and DC transmission system. The excitation voltage type of the valve side winding is very different from that of the ordinary power transformer: except In addition to withstanding AC voltage, lightning impulse and operating overvoltage, it also withstands voltage effects such as DC, DC superimposed AC, and polarity...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R29/24
CPCG01R29/24
Inventor 侯帅傅明利杜伯学李进田野卓然惠宝军韩涛
Owner ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD
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