Considerations for the Application of an MV High-Speed Grounding Switch for Arc Flash Mitigation of LV Equipment

Catlett, Raymond; Lang, Mike; Scala, Steve

doi:10.1109/tia.2016.2619331

Cited by 10 publications

(9 citation statements)

References 6 publications

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“…The power industry on economic grounds incorporates automation of small hydropower plants, and the same is managed through remote sensing and control application . During this, several small power relay arrangements are inevitably used for controlling purposes.…”

Section: Discharge Assessment In High‐voltage Accessoriesmentioning

confidence: 99%

“…In case of damage, exercising the usual inspections is very hard and practically unable to locate the fault . In a period of regular maintenance, if the functional tests of relay are normal, the status of relay contacts are taken for granted as they do not form the main equipment . Enough attention is provided only when relay suffers severe failure which reflects an abnormality in the plant control program.…”

Section: Discharge Assessment In High‐voltage Accessoriesmentioning

confidence: 99%

“…Enough attention is provided only when relay suffers severe failure which reflects an abnormality in the plant control program. Subsequent maintenance procedure demands for an immediate shut down resulting in compromise of efficiency and raising severe economic constraints . So, it becomes important to do a risk assessment on small power relays despite the fact that the procedure outweighs the financial factor.…”

Section: Discharge Assessment In High‐voltage Accessoriesmentioning

confidence: 99%

“…However, the other accessories, which are used for power control and testing purposes, are not provided with equal attention. In particular, the partial discharge (PD) reliability of high‐voltage switching relays and connecting cables, which are popularly used for testing/controlling underwater high‐voltage applications, is either neglected or the sensitive data are not available in the public domain . Considering the material used, it is presumed that the device itself is practically suitable for the application.…”

Section: Introductionmentioning

confidence: 99%

“…Considering the material used, it is presumed that the device itself is practically suitable for the application. In particular, the imperfections in the structural design and the positioning of the high‐voltage conductor in a relay switch and micro‐discharges in the cavities of connecting cables cause stronger electrical discharges which in turn compromises the lifetime and reliability of the device itself . In other words, the discharges cause the relay switch and/or the connecting cable to suffer a premature failure.…”

Section: Introductionmentioning

confidence: 99%

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Understanding partial discharges in low-power relay and silicone cable modified to suit high-voltage requirement of deep sea electrical system

Arumugam

Haba

Koerner³

et al. 2018

Int Trans Electr Energ Syst

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Modern trend in the ocean engineering sector focuses on improvising the existing technology and enhancing the cost-cutting measures to meet the economic constraints. In addition, the safety and reliability of the applied technique must be increased. A possible way to achieve this is by suitably modifying the existing low-cost devices to meet the requirements of underwater application. At any cost, the reliability of such modified devices has to be ensured well before their underwater deployment. Currently, the most attention is provided to the high-power apparatus such as submarine power cables, structural components, etc., while the reliability of the other supporting components, ie, high-voltage relay switches and connecting cables, is provided with scanty attention or at least, the sensitive data are not made available in the public domain. Considering this, an experimental investigation on understanding the reliability of a standard high-voltage relay switch and its high-voltage connecting cable, modified to suit the requirement of 20 kV deep-sea switching application, is initiated. The reliability of the chosen components is assessed through partial discharge measurements. First, a high-voltage relay and connecting cable are selected and suitably modified to meet the underwater condition. Later, the chosen samples are emulated at underwater conditions and subjected to conventional and non-conventional partial discharge test methods. Depending on the level of discharge, the modification made on the standard relay and connecting cable, is validated and subsequently deployed in an underwater application.

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Section: Discharge Assessment In High‐voltage Accessoriesmentioning

confidence: 99%

Section: Discharge Assessment In High‐voltage Accessoriesmentioning

confidence: 99%

Section: Discharge Assessment In High‐voltage Accessoriesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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