Built-in high voltage side electronic current transformer and circuit breaker

An electronic current, high-voltage side technology, applied to circuit breakers, inductors, transformer/inductor coils/windings/connections with excessive current, etc. The effect of breakdown and easy energy extraction

Active Publication Date: 2011-05-25
PINGGAO GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a built-in high-voltage side electronic current transformer and circuit breaker to solve the problems of inconvenient use and low safety of the existing electronic current transformer signal processing unit

Method used

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  • Built-in high voltage side electronic current transformer and circuit breaker
  • Built-in high voltage side electronic current transformer and circuit breaker
  • Built-in high voltage side electronic current transformer and circuit breaker

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Embodiment Construction

[0020] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0021] Embodiments of the electronic current transformer of the present invention are as follows:

[0022] Such as figure 1 , Figure 4 A built-in electronic current transformer on the high-voltage side is shown, including a Rogowski coil 1, a low-power coil 2, and an energy-taking coil 3 stacked up and down coaxially on the high-voltage side. The Rogowski coil 1 and the low-power coil 2 are connected with signal processing The circuit 14 and the output of the energy-taking coil 3 are connected to the power supply circuit 15 , and the power supply circuit 15 supplies power to the signal processing circuit 14 . Three coils and a metal support base 4 are coaxially threaded on an inner tube frame 5, the inner hole of the metal support base 4 is screwed to the inner tube frame 5, and the connecting flange at the lower end of the metal support base 4 is installe...

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PUM

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Abstract

The invention relates to a built-in high voltage side electronic current transformer and a circuit breaker. The built-in high voltage electronic current transformer, which comprises high voltage side coaxially stacked Rogowski coil and low power coil; and the two coils are connected with a signal processing circuit. The built-in high voltage electronic current transformer is characterized in that: an energy taking coil is coaxial with the two coils, and the output of the energy taking coil is connected with a power circuit for supplying power to the signal processing circuit. The energy taking coil is arranged, the signal processing circuit and a power supply thereof are integrally arranged on the high voltage side of the transformer, and the power is directly taken from a bus, so that resources are saved, the operation is convenient to implement and the application is safe. For the circuit breaker with the built-in transformer and the electronic current transformer, the processing circuit and the power supply thereof are integrally arranged on the high voltage side, the energy is convenient to take, and the coils are suspended to prevent breakdown.

Description

technical field [0001] The invention relates to the field of electronic current transformers, in particular to a built-in high-voltage side electronic current transformer and a circuit breaker built with the transformer. Background technique [0002] In power systems, current transformers are widely used as output devices for energy metering and relay protection signals. With the continuous improvement of the voltage level of the power system and the increasing transmission capacity, the traditional transformer presents many problems such as easy saturation, low precision, small dynamic range, and narrow frequency response. With the development of intelligent technology, it is the general trend to replace traditional current transformer coils with electronic current transformer coils, and electronic current transformers have obvious advantages. There are two types of current electronic current transformers: active type and passive type. This article deals with active elect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F38/28H01F38/32H01F27/28H01F27/36H01H73/00
Inventor 袁端磊林飞王红庆毕迎华张炜李冬焱苏永华裴韶光
Owner PINGGAO GRP
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