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Capacitance apparatus and system for measuring high voltage element voltage and gas insulated transformer substation

A technology of high-voltage components and capacitive equipment, which is applied in the direction of measuring electrical variables, measuring current/voltage, measuring devices, etc., to achieve the effect of low cost

Inactive Publication Date: 2010-09-08
ALSTOM TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Furthermore, such equipment must be selective: if there is more than one conductor, the measurement signal must depend primarily on the conductor being monitored, with less than 10% influence due to other conductors

Method used

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  • Capacitance apparatus and system for measuring high voltage element voltage and gas insulated transformer substation
  • Capacitance apparatus and system for measuring high voltage element voltage and gas insulated transformer substation
  • Capacitance apparatus and system for measuring high voltage element voltage and gas insulated transformer substation

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Embodiment Construction

[0056] The device 10 of the present invention, such as figure 1 shown, consists of a printed circuit board consisting of three layers:

[0057] a first layer 11 is a conductive layer;

[0058] a second layer 12, made of insulating material, preferably epoxy, with a thickness of very high precision; and

[0059] A third layer 13 is a conductive layer.

[0060] The third layer 13 includes a plurality of conductive parts, such as figure 1 Four sections 14 , 15 , 16 and 17 are shown, each of which is arranged to be connected to at least one of two signal output cables 20 and 21 .

[0061] This first layer 11 is usually connected to ground potential. The third layer 13 faces a high voltage electrode 22, for example a conductor whose high voltage is to be measured. Due to the influence of the electric field generated by the high voltage electrode 22, this third layer 13 is connected to a voltage level slightly higher than ground potential.

[0062] The device 10 of the present...

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Abstract

The invention relates to a capacitance apparatus and system for measuring the voltage of a high voltage element (22) and a gas insulated transformer substation utilizing the capacitance apparatus. The apparatus has a conductive surface of the high voltage element, the conductive surface comprises at least two conductive parts (14, 15, 16, 17) which are separated mutually and are adapted to be connected to an indicator and a control device (25, 26) in parallel by at least one output cable. The apparatus comprises a conductive first layer (11) which is connected to a ground potential; an insulated second layer (12); a third layer (13) comprising at least two separated conductive parts; and at least one bridge contact unit for permitting at least one conductive part to be connected to the output cable.

Description

technical field [0001] The present invention relates to a capacitive device and system for measuring the voltage of a high-voltage component, and a gas-insulated substation using the capacitive device. Background technique [0002] The field of the invention is that of measuring the voltage of high voltage components. This field refers in particular to capacitive devices designed for use in shielded electrical equipment, as well as insulating substances provided in gaseous form, such as sulfur hexafluoride (sulfur hexafluoride) or SF 6 . [0003] This device can be used to measure the voltage of a busbar carrying a current in a Metal Composite Switcher (MCS) or Gas Insulated Substation (GIS). The equipment must meet the following criteria: it must be simple and reliable, it must be able to be manufactured at low cost, it must take up little space, and it must be a dual Remain. Furthermore, the characteristics of the device, especially its transfer ratio, must be easily a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R19/00
CPCG01R15/165H02B13/0356
Inventor 罗伯特·吕舍尔卡斯腾·波林克雨果·希尔特布龙纳赫拉尔多·帕尔米耶
Owner ALSTOM TECH LTD
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