Wideband GIS electronic voltage transformer device and measurement method

A voltage transformer and broadband technology, applied in the field of electric power measurement, can solve problems such as large electrode size, and achieve the effect of solving transient problems, increasing time constant, and improving transient characteristics

Active Publication Date: 2019-11-08
CHINA ELECTRIC POWER RES INST +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Disadvantages are large electrode size, often requires a second voltage divider, and transient problems caused by entrapped charges

Method used

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  • Wideband GIS electronic voltage transformer device and measurement method
  • Wideband GIS electronic voltage transformer device and measurement method
  • Wideband GIS electronic voltage transformer device and measurement method

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Embodiment Construction

[0036] Exemplary embodiments of the present invention will now be described with reference to the drawings; however, the present invention may be embodied in many different forms and are not limited to the embodiments described herein, which are provided for the purpose of exhaustively and completely disclosing the present invention. invention and fully convey the scope of the invention to those skilled in the art. The terms used in the exemplary embodiments shown in the drawings do not limit the present invention. In the figures, the same units / elements are given the same reference numerals.

[0037] Unless otherwise specified, the terms (including scientific and technical terms) used herein have the commonly understood meanings to those skilled in the art. In addition, it can be understood that terms defined by commonly used dictionaries should be understood to have consistent meanings in the context of their related fields, and should not be understood as idealized or over...

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Abstract

The invention discloses a wideband GIS electronic voltage transformer device and a measurement method. The device comprises a built-in measurement electrode module, a conditioning module, a sampling module and a control module, wherein a measurement electrode of the built-in measurement electrode module is arranged in a GIS hand hole, and the measurement electrode penetrates through a GIS shell through a wire to be connected with a forward input end of a wideband amplifier of the conditioning module; a conditioning resistor and a conditioning capacitor of the conditioning module are connectedin parallel between a negative input end and a negative output end of the wideband amplifier; the sampling module performs analog sampling and analog-digital conversion to obtain a digital output voltage; and the control module calculates a GIS primary voltage value according to a voltage division ratio and the digital output voltage. Through the device and the method, electrode size miniaturization is realized, measurement bandwidth is expanded, transient characteristics are improved, the voltage transformation ratio is easy to regulate, and it is not needed to set secondary voltage division.

Description

technical field [0001] The invention relates to the field of power measurement, and more specifically, to a broadband GIS electronic voltage transformer device and a measurement method. Background technique [0002] 100V secondary output of traditional voltage transformer or The voltage signal cannot be directly connected to the microcomputer, so it is difficult to adapt to the development trend of automation, digitization and intelligence of the power system. Electronic voltage transformers adopt new sensing technology and have the advantages of small size, wide frequency bandwidth, and digital output, and are widely used in smart substations. There are two types of electronic voltage transformers currently used in GIS substations, one is optical voltage transformers, and the other is coaxial capacitive voltage dividers. [0003] The measuring principle of the optical voltage transformer is based on the principle of the Pockels effect or the principle of the inverse piez...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R15/18G01R19/00
CPCG01R15/18G01R19/0084
Inventor 赵军张建功万保权邹志杨干喆渊张业茂谢辉春刘兴发倪园周兵王延召李妮胡静竹
Owner CHINA ELECTRIC POWER RES INST
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