Transients Induced on Control Cables and Secondary Circuit of Instrument Transformers in a GIS During Switching Operations

The paper analyzes the condition of electrical grids in the west of the Republic of Sakha (Yakutia); data sampled for the last 10 years. It demonstrates the geographic location of grids, which defines the scale of the study. Technical indicators are presented for 10 years; they reflect an increase in the fixed assets. The paper derives mathematical models of the wear of transmission equipment used in the western grids. It proves that the condition of equipment will deteriorate further unless its maintenance is properly funded. The paper analyzes the prospects of electrical grids in the Republic of Sakha (Yakutia). It presents a program for local energy optimization. The costs associated with five alternative development scenarios are calculated and presented in a tabular format.

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“…The obtained mathematical models indicate that the probability of WEG increase in wear is 95% [22][23][24][25].…”

Section: Grids and Renewable Energymentioning

confidence: 94%

Structure, condition, and prospects of electrical grids in the Republic of Sakha (Yakutia)

et al. 2019

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“…Successively apply Equations (5) (6) ( 7) and ( 9) into Equation (10). Then the n th breakdown voltage can be derived as follows:…”

Section: Breakdown Voltage At Breakmentioning

confidence: 99%

“…RAO and others measured the disturbance voltage on the cable in the secondary control circuits under switching operations in a 245 kV GIS substation. The influence of cable length and the inductance of the secondary winding on the disturbance voltage was also analysed [10]. Limin FENG and others measured the electromagnetic disturbance to electronic transformers under the operation of a GIS isolator and circuit breaker in a 500 kV intelligent substation in southern Changchun.…”

Section: Introductionmentioning

confidence: 99%

A quantitative research on the level of disturbance to secondary signal ports of electronic voltage transformers under the operation of gas‐insulated switchgear

Wang¹,

Fu²,

Chu³

et al. 2021

High Voltage

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The collectors of electronic transformers has the problem of electromagnetic incompatibility under the operation of disconnecting switches, which limits their wide application in smart grids. To evaluate the maximum level of disturbance that collectors are able to withstand in the stochastic process of switching operation, this work introduces a quantitative approach based on limited test measurements, which can quantify the level of disturbance in the signal acquisition ports of electronic voltage transformers (EVT) in different gas-insulated switchgears (GIS). Based on large numbers of experimental statistical data of the true type simulation experimental platform, the Spearman rank correlation coefficient is used to prove that the amplitude of the disturbance voltage pulse at the secondary side port and the breakdown voltage between the primary side fracture approximately satisfy a linear relationship. Subsequently, the quantile regression model is used to quantify and verify the maximum disturbance level of the secondary side port. Moreover, a solution is proposed to tackle the difficulty in obtaining the breakdown voltage at breaks in the GIS substation field applicatvion, under which the quantified maximum disturbance voltage deviation of secondary ports is only −4.34% by comparison. The research work can further explore the practical value of the measured data in a few tests under GIS substation field conditions and provide references for the subsequent revision of EVT-related standards.This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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“…These disturbances affect the normal operation of electronic products and the electromagnetic environment in coal mines. In recent years, there have been several studies conducted on switching operation transient electric field in power substations [1–3]. The researchers who conducted these studies analysed the problem of electromagnetic interference and its suppression of EMC testing systems [4].…”

Section: Introductionmentioning

confidence: 99%

Research on switching operation transient electromagnetic environment of substations in a coal mine

Feng

Lan

et al. 2016

IET Generation, Transmission & Distribution

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Transients Induced on Control Cables and Secondary Circuit of Instrument Transformers in a GIS During Switching Operations

Cited by 32 publications

References 7 publications

Structure, condition, and prospects of electrical grids in the Republic of Sakha (Yakutia)

Structure, condition, and prospects of electrical grids in the Republic of Sakha (Yakutia)

A quantitative research on the level of disturbance to secondary signal ports of electronic voltage transformers under the operation of gas‐insulated switchgear

Research on switching operation transient electromagnetic environment of substations in a coal mine

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