A study on safety issues and analytical evaluation of stresses for HVDC cable in electrical vehicle

Bukya, Mahipal; Kumar, Rajesh; Gupta, Ravi

doi:10.1063/5.0031351

Cited by 12 publications

(1 citation statement)

References 9 publications

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“…There are many advantages of converting the non-automated substation to automated substation. IEC61850 is used predominately for faster and reliable communications in the substations [15][16][17][18][19][20][21][22][23]. By assessing the variables impacting the difficulties encountered by water utilities in reducing NRW rates, the study examines the impact of magnetic field, Joule heating, and temperature profiles, as well as the reduction solutions [24][25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

A Novel Method to Improve the Residual Life of Switchgear by Reducing the Impact Caused by Thermal and Mechanical Stresses Produced Due to SLG Cable Faults in Electrical Substations

Babu Naik Gugulothu,

Sanjay Lakshminarayanan,

Madhu Palati

et al. 2023

ARFMTS

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From the studies carried out in the field of power systems, it is found that the single line to ground fault is more common and produces severe electro-mechanical and thermal stress on the connected equipment. In urban areas, power utilities are replacing the overhead conductors with underground cables due to low availability of space for new lines or ROW issues. With the increase in the number of power cables, it is becoming difficult for the utilities to maintain and test the healthiness of the cables. On the other side, due to advances in computational capabilities, the manufacturers are providing an optimized solution which is reducing the fault feeding capability of the equipment and equipment are failed frequently. In this paper, a new advanced method of protecting the power transformers from SLG faults using both conventional and automated techniques is proposed. A combined solution using conventional and automation provides a redundant and robust approach to improve the residual life of equipment. To limit the fault current due to SLG faults neutral grounding reactor (NGR) is proposed, and GOOSE technique is used to isolate the equipment from the fault as soon as possible. The proposed method is simulated using MATLAB/SIMULINK and results obtained are satisfactory.

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