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Current measurement device for high-voltage converter

A current measurement device and converter technology, which is applied in the direction of using digital measurement technology for measurement, instruments, non-electrical signal transmission systems, etc., can solve problems such as rapid current measurement of high-voltage converters, and achieve sampling and overcurrent protection. , Solve the problem of withstand voltage and meet the effect of real-time feedback control of output current

Inactive Publication Date: 2011-01-19
STATE GRID ZHEJIANG ELECTRIC POWER +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a high-voltage converter current measuring device, which overcomes the deficiencies of the prior art and solves the problem of rapid measurement of the high-voltage converter current

Method used

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  • Current measurement device for high-voltage converter
  • Current measurement device for high-voltage converter

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Embodiment Construction

[0014] Such as figure 1 As shown, a high-voltage converter current measurement device of this embodiment is connected to the high-voltage circuit 6, and the high-voltage circuit 6 provides input power to it, and the device includes ( figure 1 In the dotted line frame is the device of the present embodiment): current sensor 1, A / D converter 2, field programmable gate array chip 3, optical fiber driver 4 and isolated regulated power supply 5; Wherein,

[0015] Current sensor 1 is connected with a circuit end of high-voltage circuit 6, and is used to measure the output current of current transformer in high-voltage circuit 6; It is installed in the high-voltage circuit that provides input power for isolated voltage stabilized power supply 5, a circuit of this high-voltage circuit The terminal wires directly pass through the primary measurement hole of the current sensor 1 , and the output signal of the secondary side of the current sensor 1 is connected to the A / D converter 2 . ...

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Abstract

The invention discloses a current measurement device for a high-voltage converter, which is connected with a high-voltage circuit, and the high-voltage circuit supplies input power supply for the device. The device comprises a current sensor, an A / D converter, a field programmable gate array chip, a fiber driver and an isolation voltage stabilizing power supply, wherein the current sensor is connected with a circuit end of the high-voltage circuit, and is connected with the A / D converter; the A / D converter is connected with the field programmable gate array chip; the field programmable gate array chip is connected with the fiber driver; the fiber driver is connected with the isolation voltage stabilizing power supply; and the isolation voltage stabilizing power supply is connected with the high voltage circuit. The device overcomes the defect of the prior art to solve the problem of quick measurement of current of the high-voltage converter.

Description

technical field [0001] The invention relates to a current measuring device for a high-voltage converter, which belongs to the technical field of electrical automation equipment. Background technique [0002] High-voltage converters are widely used in various high-voltage converters, such as high-voltage frequency converters, new static synchronous compensators (STATCOM), new energy power generation inverters, dynamic voltage restorers (DVR), active filters (APF) etc. [0003] Due to the high working voltage level of high-voltage converters, some currents contain DC components, and the Hall current sensor that can measure DC current components is limited by the insulation withstand voltage of the primary and secondary sides, so it cannot directly measure the current of these high-voltage circuits. In addition, this output current may be required for feedback control, requiring a high sampling rate. Therefore, it is necessary to find a high-voltage converter current measurin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R19/25G08C23/06
Inventor 刘文华宋强陈远华赵香花王敏盛晔陈晓宇
Owner STATE GRID ZHEJIANG ELECTRIC POWER
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