Experimental research of the developed method to determine the network insulation for ungrounded AC systems in laboratory conditions

Tatkeyeva, Galina; Kurabayev, Iskander; Ataullaev, Nodir; Murodov, Xasan

doi:10.1109/icecet55527.2022.9873012

Cited by 2 publications

(1 citation statement)

References 5 publications

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“…1 was used as an additional susceptance. A capacitor bank is used to connect an additional susceptance to one of the phases of the electrical network and to the earth, while the capacitor connection circuit is made in a parallel scheme, which makes it possible, to sum up, the capacitances of the capacitors, thereby achieving the necessary change in phase voltages necessary for the accuracy of calculations [11].…”

Section: Methodsmentioning

confidence: 99%

"Approbation of the developed method for determining network insulation parameters on an operating excavator"

Kurabayev¹,

Tatkeyeva²

2023

BTOUEn

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"One of the factors that determine the safety of electrical installations in ungrounded AC systems is the insulation resistance to earth. Early recognition and fault clearance, accompanied by a change in the active and reactive components of the insulation conductivity in ungrounded AC systems, will ensure work safety in electrical installations. Due to the fact the scale of cases of electrical injuries continues to remain significant, despite the tightening of the requirements of regulatory and technical documentation and the creation of newer effective methods and protection equipment against electric shock, therefore, increasing the level of electrical safety in the operation of mining machines and complexes is an urgent task. The article depicts the results of the approbation of the developed method for determining network insulation parameters on an operating excavator. The developed method is based on measuring phase voltages and angles of their vectors before and after connecting an additional capacitance to the phase of the electrical network and to the earth. According to the developed method, numerical data of the insulation condition in an electrical network with a voltage up to 1000 V and the single-phase earth fault current were calculated. During the approbation of the developed method, the lack of the existing protective residual current device was identified. Keywords: network insulation, admittance, susceptance, neutral shift, zero-sequence voltage. "

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Section: Methodsmentioning

confidence: 99%