GIS loop resistance measuring device and method

A loop resistance and measurement device technology, applied in the direction of impedance measurement, etc., can solve the problems of less data samples, low measurement efficiency, large error, etc., and achieve the effect of improving accuracy, fast switching speed, and good linearity

Pending Publication Date: 2020-09-11
SHANGHAI MUNICIPAL ELECTRIC POWER CO +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] After the capacitor is fully charged, it is discharged to generate an inrush current, and the current waveform and voltage drop waveform of the GIS conductive rod are obtained and the loop resistance of the GIS conductive rod is calculated once. After that, the capacitor needs to be charged to continue the next measurement, and the measurement efficiency is low. , the number of data samples for one measurement is small, and the error of a single test result is relatively large

Method used

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  • GIS loop resistance measuring device and method
  • GIS loop resistance measuring device and method
  • GIS loop resistance measuring device and method

Examples

Experimental program
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Effect test

Embodiment 1

[0042] A GIS loop resistance measurement device, such as figure 1 Including supercapacitor 2, switching element 3, voltage acquisition element 8, current acquisition element 9, discharge branch 4 and controller 6, GIS equipment 5, current acquisition element 9 and supercapacitor 2 and switching element 3 are connected in sequence to form the main discharge circuit, the supercapacitor 2 is connected with a charger 1, the voltage acquisition element 8 is connected with the GIS equipment 5, the discharge branch 4 is connected in parallel with the GIS equipment 5 and the current acquisition element 9 to form a sub-discharge loop, and the controller 6 is connected with the switch element 3 , sending a trigger signal to the switching element 3, the industrial computer is connected with an acquisition card 7, the acquisition card 7 is connected with the voltage acquisition element 8 and the current acquisition element 9, and is used to acquire the voltage signal and the current signal...

Embodiment 2

[0046] A kind of GIS loop resistance measurement method corresponding to embodiment 1, specifically:

[0047] S1: The switching element 3 is disconnected, the charger 1 charges the supercapacitor 2, and the supercapacitor 2 is disconnected from the charger 1 after it is fully charged;

[0048] S2: The switch element 3 is turned on, the supercapacitor 2 discharges the main discharge circuit, the current acquisition element 9 and the voltage acquisition element 8 collect the current signal and the voltage signal of the GIS device 5 respectively, and the current passing through the GIS device 5 reaches a peak value according to the current and Calculate the loop resistance of the GIS equipment by voltage, when the set conditions are met, the switch element 3 is disconnected, the inductance in the GIS equipment 5 discharges the sub-discharge loop, and then calculate the loop resistance of the GIS equipment;

[0049] S3: Repeat step S2 when the repeated measurement condition is sat...

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PUM

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Abstract

The invention relates to a GIS loop resistance measuring device and method. The GIS loop resistance measuring device comprises GIS equipment (5), a current acquisition element (9), a super capacitor (2) and a switch element (3) which are connected in sequence, the super capacitor (2) is connected with a charger (1). The GIS equipment (5) is connected with a voltage acquisition element (8), the GISequipment (5), a current acquisition element (9), a super capacitor (2) and a switch element (3) form a main discharge loop of the device, and the device further comprises a discharge branch (4) which is connected with the GIS equipment (5) and the current acquisition element (9) in parallel to form a branch discharge loop. Compared with the prior art, the device and method have the advantages ofhigh accuracy, high efficiency and the like.

Description

technical field [0001] The invention relates to a GIS state evaluation technology, in particular to a GIS loop resistance measuring device and method. Background technique [0002] Gas Insulated Switchgear (GIS) has the advantages of small footprint, low failure probability, high safety performance, small environmental impact, easy installation and maintenance, etc., which can greatly improve the reliability of power supply. GIS will benefit from its equipment manufacturing Problems in materials, assembly process, equipment transportation and installation, etc., lead to poor internal contact of electrical contacts. GIS conductive loop resistance has always been an important technical indicator for evaluating equipment quality and operating status. In relevant national standards, industry The test items for GIS loop resistance measurement are stipulated in the standards. Through actual measurement, it is determined whether the resistance value of the conductive loop is within...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R27/16
CPCG01R27/16
Inventor 高凯陆启宇胡正勇曹培许侃
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO
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