A switch integrated medium voltage electronic voltage transformer

A voltage transformer and electronic technology, which is applied in the field of high voltage measurement, can solve problems such as low precision and complex structure, and achieve the effects of avoiding measurement errors, high measurement precision and high degree of functional integration

Active Publication Date: 2020-11-24
WUHAN WUCHANG ELECTRIC CONTROL EQUIP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the method of the technical solution of the present invention, aiming at the complex structure and low precision of the current electromagnetic voltage transformer, a simple and compact electronic voltage transformer is designed based on the principle of capacitive voltage division, which can accurately and effectively measure the two terminal voltage

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  • A switch integrated medium voltage electronic voltage transformer
  • A switch integrated medium voltage electronic voltage transformer
  • A switch integrated medium voltage electronic voltage transformer

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Embodiment Construction

[0026] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other. The present invention will be further described in detail below in combination with specific embodiments.

[0027] Such as figure 1 Shown is the electronic voltage transformer circuit structure diagram of the embodiment of the technical solution of the present invention. It includes two capacitors in series, and as a whole, it includes a high-voltage arm capacitor C1 and a low-voltage arm capaci...

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Abstract

The invention discloses a switch integrated medium-voltage electronic voltage transformer comprising a breaker switch body and an external capacitor; the features are that a wire inlet / outlet metal pole plate is in a cylinder structure with two opening ends, and coaxially sleeved on the breaker wire inlet / outlet periphery; an insulation gap is formed between the wire inlet / outlet metal pole plateand the breaker inlet wire, thus forming a wire inlet / outlet capacitor; the wire inlet / outlet capacitor is connected in series with the external capacitor via a wire, and grounded, thus enabling the wire inlet / outlet capacitor and the external capacitor to cascade and form a breaker wire inlet / outlet voltage divider, and enabling the breaker wire inlet / outlet voltage divider and the breaker switchbody to form an integrated structure. An existing electromagnetic sensor is complex in structure and low in precision; the method can solve said problems, and uses a capacitance dividing potential drop principle to design the compact electronic voltage transformer with a simple structure, thus accurately and effectively measuring the voltage on two ends of the breaker.

Description

technical field [0001] The invention belongs to the technical field of high-voltage measurement, and in particular relates to an integrated medium-voltage electronic voltage transformer. Background technique [0002] In the power system, the measurement part of the medium-voltage circuit breaker mainly includes voltage measurement and current measurement. Accurately obtaining circuit breaker voltage and current is of great significance for relay protection and circuit breaker operation monitoring. Among them, the input and output line voltage of the intelligent circuit breaker is an important operating parameter. In the distribution network, a smart power distribution network can be composed of multiple smart circuit breakers. Each intelligent circuit breaker can quickly judge the type of fault and the location of the fault according to the primary voltage and current data in the power distribution network, realize accurate positioning and isolation of the fault, and improv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H33/02
CPCH01H33/027
Inventor 沈祥裕刘春杨勇
Owner WUHAN WUCHANG ELECTRIC CONTROL EQUIP
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