High voltage ceramic capacitance couple sensor with low partial discharge magnitude

A partial discharge, high-voltage ceramic technology, applied in the direction of testing dielectric strength, can solve problems such as space cramps, and achieve the effect of low partial discharge

Inactive Publication Date: 2012-07-11
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Domestic generator manufacturing and operation departments basically cannot accept the method of coupling signals with built-in sensors, and considering the high-frequency transmission attenuation of partial discharge signals of generato

Method used

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  • High voltage ceramic capacitance couple sensor with low partial discharge magnitude
  • High voltage ceramic capacitance couple sensor with low partial discharge magnitude
  • High voltage ceramic capacitance couple sensor with low partial discharge magnitude

Examples

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Embodiment Construction

[0028] Such as figure 1 The shown high-voltage ceramic capacitive coupling sensor with low partial discharge includes a metal base 11, a ceramic capacitor core 5, an upper electrode 3, a metal electrode 2 and an external lead 1, the metal base 11 is a copper base, and the metal electrode 2 is Copper electrodes, the external lead wire 1 is used to firmly connect with the generator outlet busbar, so that the sensor and the generator busbar are connected together. The ceramic capacitor core 5 has two upper and lower copper electrodes, which are respectively the upper copper electrode 5a and the lower copper electrode 5b A metal rod 4 is installed between the upper copper electrode 5a of the ceramic capacitor core body 5 and the upper electrode 3, the metal rod 4 is preferably a copper rod, and the lower copper electrode 5b of the ceramic capacitor core body 5 is connected with the lead bolt 8 by a metal strip 6, The metal strip 6 is a copper strip, the lead bolts 8, the metal strip

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PUM

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Abstract

The invention discloses a high voltage ceramic capacitance couple sensor with low partial discharge magnitude, which comprises a metal base, a ceramic capacitance core, a top electrode, a metal electrode and an external lead. The ceramic capacitance core is provided with a top copper electrode and a bottom copper electrode, a metal rod is arranged between the top copper electrode on the ceramic capacitance core and the top electrode, the bottom copper electrode on the ceramic capacitance core is connected with a lead bolt through a metal belt, the lead bolt, the metal belt, the ceramic capacitance core, the metal rod and the top electrode are connected successively from bottom to top and molded through epoxy resin casting, casting epoxy resin forms an encircling-coating-shaped epoxy resin coating shell, the top electrode is embedded in the upper portion of the epoxy resin coating shell, the lead bolt is embedded in the lower portion of the epoxy resin coating shell, the metal electrode is arranged on the top electrode, the external lead is connected with the metal electrode, the metal base is connected with the lower portion of the epoxy resin coating shell fixedly, and sampling impedance and a coaxial wire base are arranged inside the metal base. The sensor has a compact structure and the partial discharge magnitude of the sensor is low.

Description

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Claims

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Application Information

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Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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