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High voltage sensor

A sensor, high-voltage technology, applied in the direction of only measuring voltage, measuring current/voltage, instruments, etc., can solve the problems of non-isolation of primary and secondary, troubled secondary fusion, etc., to achieve the effect of convenient use

Inactive Publication Date: 2017-11-24
DENGGAO ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the resonance of the electromagnetic voltage transformer, there is a great risk to the operation of the power grid, and the electronic voltage transformer, including the resistance voltage divider, the capacitor voltage divider and the resistance-capacity voltage divider transformer, has the problem of primary and secondary non-isolation. This has always been a problem that has plagued primary and secondary integration

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Embodiment Construction

[0012] refer to figure 1 A high-voltage sensor disclosed by the present invention includes a high-voltage capacitor C1, an isolation sensor TA, and a signal processing unit. The high-voltage capacitor C1 is connected in series with the primary circuit of the isolation sensor TA, and the secondary circuit of the isolation sensor TA is connected to the signal processing unit. Signals from the signal processing unit are sent wirelessly.

[0013] The high-voltage capacitors in the specific embodiments of the present invention are high-voltage ceramic capacitors with long service life.

[0014] The isolated sensor in the specific embodiment of the present invention is a micro current transformer.

[0015] The above is a specific description of the embodiments of the present invention, but the present invention is not limited to the embodiments. Those skilled in the art can make various equivalent deformations or replacements without violating the present invention. These equivalen...

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Abstract

The invention relates to a high voltage sensor. The high voltage sensor includes a high voltage capacitor, an isolation sensor and a signal processing unit, wherein the high voltage capacitor is connected with an input end of the isolation sensor; and an output end of the isolation sensor is connected with the signal processing unit. The high voltage sensor can perform current limiting and voltage reduction on the high voltage alternating current, and then the alternating current after voltage reduction is collected to the signal processing unit through the isolation sensor to carry out signal processing, and the signal is sent out in a wireless mode, so that the high voltage sensor is convenient to use.

Description

technical field [0001] The patent of the present invention relates to a high-voltage sensor for smart cities, in particular to a high-voltage sensor for power systems. Background technique [0002] At present, electromagnetic voltage transformers or electronic voltage transformers are used for high-voltage measurement of my country's power grid. Due to the resonance of the electromagnetic voltage transformer, there is a great risk to the operation of the power grid, and the electronic voltage transformer, including the resistance voltage divider, the capacitor voltage divider and the resistance-capacity voltage divider transformer, has the problem of primary and secondary non-isolation. This has always been a problem that has plagued primary and secondary integration. With the continuous progress of microelectronics and information technology, people began to consider canceling the high-voltage transformer, breaking the "iron triangle", and allowing electronic devices to di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R19/00
CPCG01R19/0084
Inventor 叶有福葛玲玲
Owner DENGGAO ELECTRIC