Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A device for monitoring a gas-insulated high-voltage substation by measuring partial discharges and the gas-insulated high-voltage substation using the device

A technology for gas-insulated and switchgear, which is applied in the field of monitoring gas-insulated high-voltage switchgear, and can solve problems such as inability to use closed-form methods, results that do not conform to theoretical formulas, and spurious

Inactive Publication Date: 2012-11-28
ALSTOM TECH LTD
View PDF5 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be shown that the influence of the environment of the antenna (e.g. circular base plate) is so large that the closed-form approach of conventional antenna theory cannot be used
By performing measurements, it was observed that the sensitivity of the sensor can be adapted to the environment by means of the cone angle, but the results do not fit the theoretical formula mentioned in reference (2), due to the spur between the recess of the sensor and the head capacitance

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A device for monitoring a gas-insulated high-voltage substation by measuring partial discharges and the gas-insulated high-voltage substation using the device
  • A device for monitoring a gas-insulated high-voltage substation by measuring partial discharges and the gas-insulated high-voltage substation using the device
  • A device for monitoring a gas-insulated high-voltage substation by measuring partial discharges and the gas-insulated high-voltage substation using the device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] Standard gas insulated high voltage switchgear comprises at least one conductor arranged in an enclosure 11 . The housing may contain openings, especially for fastening safety devices, and windows.

[0028] Such as figure 1 For the first embodiment and figure 2 As shown for the second embodiment in , the device of the invention comprises: an electric field sensor (E field sensor) 10 comprising a metal plate 13 adapted to be fastened to a wall 11 of an enclosure of a high voltage electrical switching apparatus; a tapered metal portion 12 , the open part of which is closed by the cover, the open end of the other end extends into the bushing 14 passing through the metal plate 13, which serves as the base plate of the resulting conical antenna; and the connector 15, which is connected to the bushing 14. This connector 15 is used to connect the bushing 14 via a coaxial cable (not shown in the figure) to the measurement and display device.

[0029] Figure 5 Another emb...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention relates to a device for monitoring a gas-insulated high-voltage substation by measuring partial discharges, the substation including an enclosure (11); an electrical field sensor (10) comprising a metal plate (13) attached to the wall of the enclosure (11); a conical metal part (12) closed with a cover at the flared portion thereof, the other end of same extending into the enclosure and opening into a bushing (14) that extends through the metal plate (13) which serves as a back-plane for the conical antenna thus formed; and a connector (15) connected to the bushing (14), which can be used to connect the bushing (14) to a measurement and display device via a coaxial cable.

Description

technical field [0001] The invention relates to a device for monitoring a gas-insulated high-voltage switchgear by measuring partial discharges, and also to a gas-insulated high-voltage switchgear using said device. Background technique [0002] The field of the invention is that of monitoring shielded electrical switchgears insulated by gases such as sulfur hexafluoride. [0003] Monitoring gas-insulated high-voltage switchgear by measuring partial discharges is widely used. However, there is currently a need for low-cost, high-gain sensors with wider bandwidths, eg, from 100 megahertz (MHz) to 2 gigahertz (GHz). There is also a need to simultaneously measure ultra high frequency (UHF) signals as well as signals at power frequencies. [0004] Reference (1) (see list at the end of the description) describes a device for measuring voltage pulses caused by partial discharges in gas-insulated electrical switchgear by means of a capacitive voltage divider, said device being ar...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01R29/08G01R31/12
CPCG01R29/0878G01R31/1254
Inventor 戴维・高奇
Owner ALSTOM TECH LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com