Voltage sensor for overhead line fault indicator based on equivalent charge

A fault indicator and voltage sensor technology, applied in the field of sensors, can solve problems such as fuzzy judgment of ground faults, and achieve the effects of easy processing, small size, and convenient live installation

Inactive Publication Date: 2015-05-20
HAIYAN LINGYUNWEI ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] What the present invention aims to solve is the problem that the existing overhead line fault indicator is fuzzy in judging the ground fault

Method used

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  • Voltage sensor for overhead line fault indicator based on equivalent charge
  • Voltage sensor for overhead line fault indicator based on equivalent charge
  • Voltage sensor for overhead line fault indicator based on equivalent charge

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0019] As shown in the figure, the present invention includes a housing 1, at least one printed circuit board 2 disposed in the housing 1, a signal conditioner 5 and a CPU 6, and the printed circuit board 1 is connected to the CPU 6 through the signal conditioner 5. The printed circuit board 2 is a double-sided printed circuit board. The top layer and the bottom layer of the double-sided printed circuit board are respectively provided with multi-circle concentric ring electrodes, and the ring electrodes 23 on the top layer and the ring electrodes 24 on the bottom layer are respectively connected in parallel. The CPU 6 is connected with an A / D converter, and the signal conditioner 5 is provided with a precision differential amplifier. The signal conditioner 5 is connected to the CPU 6 through an A / D converter. The signal conditioner 5 and the C...

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Abstract

The invention discloses a voltage sensor for an overhead line fault indicator based on equivalent charge. The voltage sensor comprises a shell, and is characterized in that at least one printed circuit board, a signal conditioner and a CPU (Central Processing Unit) are arranged in the shell; the printed circuit board is a double-side printed circuit board; multiple circles of concentric annular electrodes are arranged on the top layer and the bottom layer of the double-side printed circuit board respectively; the annular electrodes on the top layer and the bottom layer are connected in parallel respectively. The voltage sensor is added into the fault indicator, so that the ground fault can be effectively judged, and a signal generator on a power distribution transformer can be omitted. A split buckling structure is adopted, so that convenience is brought to field charged installation, the installation stability is enhanced, the influence of wind power is eliminated, the measuring stability is high, and the service life is prolonged. Moreover, the voltage sensor has the advantages of simple process, high consistency, small size, low cost, convenience in machining and suitability for batch production.

Description

technical field [0001] The invention relates to a sensor, in particular to a voltage sensor for an overhead line fault indicator based on equivalent charge. Background technique [0002] The existing overhead line fault indicators either have a vague judgment on the ground fault, or need to add a signal generator on the secondary side of the distribution transformer, but this is costly, and it is unsafe and unscientific to transform the original power supply equipment. Contents of the invention [0003] The object of the present invention is to design a voltage sensor for an overhead line fault indicator based on an equivalent charge. The voltage sensor is installed in the overhead line fault indicator to realize voltage measurement. [0004] The present invention aims to solve the problem that the existing overhead line fault indicator is vague in judging the grounding fault. [0005] The principle that the present invention realizes is: [0006] It can be proved by...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R19/25G01R31/02
Inventor 钱金华
Owner HAIYAN LINGYUNWEI ELECTRONICS
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