PD behaviour of basic test arrangements under different measurement and evaluation conditions

Haller, Rainer; Pihera, Josef; Mráz, Petr; Kornhuber, Stefan; Boltze, Matthias

doi:10.1109/ceidp.2011.6232650

Cited by 4 publications

(2 citation statements)

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“…In the second case (400-800 kHz) "rabbit ears" shows higher charge level and PD intensity is also higher in the lower part of PD cluster. It would be caused by the increased cut-off frequency of the high-pass filter to 400 kHz which was observed already in previous paper [4]. In the third case (100-1000 kHz) there is interesting that 10 kV rabbit ear has distinguished higher level of apparent charge than the rest.…”

Section: Fig 5: H-n(q) Diagram For Investigated Internal Cavitymentioning

confidence: 72%

PD behaviour of basic test arrangements under different measurement conditions

Kornhuber¹,

Boltze²,

Haller

et al. 2012

2012 IEEE International Conference on Condition Monitoring and Diagnosis

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The PD behaviour of so-called basic test arrangements as for corona discharge or other discharge sources seems to be well known from the physical point of view. On the other hand the measurement results and, in the same manner, their identification and interpretation can be different, because this is depending on the measurement or evaluation conditions. Therefore some typical basic arrangements representing corona discharges as needle-plane, needle-plane with insulating sheet and needle -sphere as well as artificial cavity into insulating material were investigated. In a previous paper the pd behaviour of the corona set-ups in air were already discussed. Additional to that the pd behaviour of typical internal pd source under different measurement condition is described. In this paper the most recognized values are compared at the well defined laboratory set ups as defined. During these investigations the standard evaluation methods according to IEC 60270, PRPD pattern and pulse sequence analysis is done. By comparing these three evaluation types the most significant method for the classification of failure types is discussed. For closer evaluation of image based evaluation methods like PRPD pattern and pulse sequence analysis different methods of classification are discussed. The presented results show surprisingly characteristic shapes of the PD pattern, which allow the better classification of the types of PD sources and their identification respectively.

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Section: Fig 5: H-n(q) Diagram For Investigated Internal Cavitymentioning

confidence: 72%

PD behaviour of basic test arrangements under different measurement conditions

Kornhuber¹,

Boltze²,

Haller

et al. 2012

2012 IEEE International Conference on Condition Monitoring and Diagnosis

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“…In order to demonstrate the influence of the filter, the basic corona PD test was performed [ 29 ]. The classical test needle-plane arrangement ( Figure 14 ) was used for this purpose.…”

Section: Methodsmentioning

confidence: 99%

Low-Pass Filter for HV Partial Discharge Testing

Kindl

Skala

Pechánek

et al. 2018

Sensors

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The most common cause of high voltage electric machine malfunction is an electrical failure of the insulation system due to extreme partial discharges activity. The paper discusses the methodology for the construction of a low-pass high voltage filter for partial discharge measurement. It focuses mainly on the shape optimization, using an analytical approach with subsequent verification using the finite element method. The experimental verification is given together with important conclusions.

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