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Low residual inductance shunt for transient current measurement

A transient current and shunt technology, applied in the measurement of electrical variables, measurement devices, voltage/current isolation, etc., can solve the problems of lack of sensor assessment and equivalence verification, and reduce residual inductance and self-inductance components. The effect of reduction, length reduction

Pending Publication Date: 2022-04-22
JIANGSU ELECTRIC POWER CO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the lack of corresponding detection equipment, the step response characteristic test of the DC current transformer and the accuracy test under high current are all carried out by incomplete measurement method, lacking the assessment and equivalence verification of the sensor

Method used

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  • Low residual inductance shunt for transient current measurement
  • Low residual inductance shunt for transient current measurement
  • Low residual inductance shunt for transient current measurement

Examples

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Embodiment

[0018] The low residual inductance shunt used for transient current measurement provided by this embodiment, such as figure 1 with figure 2 As shown, it includes: a first current terminal 1, a second current terminal 2, a first voltage terminal 3, a second voltage terminal 4 and several shunt resistors; both the first current terminal 1 and the second current terminal 2 have protrusions on the edges The rings of the first current terminal 1 and the second current terminal 2 overlap, the protrusions face different directions, there are several openings with different shapes on the ring, and there are also several openings on the protrusions; the first current An insulating plate 13 is laid between the rings of the terminal 1 and the second current terminal 2 .

[0019] The shunt resistor is a resistor sheet folded into a U shape. The U-shaped opening faces the first current terminal 1. The shunt resistor is vertically installed and inserted into the first current terminal 1. ...

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Abstract

The invention relates to a low residual inductance shunt for transient current measurement. The low residual inductance shunt comprises a first current terminal, a second current terminal, a first voltage terminal, a second voltage terminal and a number of shunt resistors. The low-residual inductance shunt for transient current measurement provided by the invention can be used for transient current measurement and transient characteristic test verification of a direct current transformer.

Description

technical field [0001] The invention relates to a low residual inductance shunt used for transient current measurement, and belongs to the technical field of DC transmission engineering. Background technique [0002] In the flexible DC transmission project, in order to realize the ultra-high-speed protection of the flexible DC grid, compared with the conventional DC project, the DC current measurement in the flexible DC grid system puts forward higher requirements. Accurate measurement of current change rate and amplitude is crucial for fast, reliable and accurate protection of flexible DC grids. The current transformer with wide measurement range, fast transmission characteristics, and low delay time can measure a wide range of system rated parameters and fault parameters, and has relatively accurate measurement accuracy, low delay characteristics, and can accurately measure faults after a fault occurs. traveling wave process. The above requirements require DC current tra...

Claims

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Application Information

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IPC IPC(8): G01R15/14
CPCG01R15/146
Inventor 张勇吴辉汪本进吴士普陈寿龙徐涛王海威
Owner JIANGSU ELECTRIC POWER CO
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