Condition assessment of medium voltage underground cables based on tangent delta and partial discharge measurements

Pertti Pakonen; Juha Keränen; Tuomo Heinonen; Pekka Verho

Condition assessment of medium voltage underground cables based on tangent delta and partial discharge measurements

Pertti Pakonen, Juha Keränen, Tuomo Heinonen, Pekka Verho

Electrical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Scientific › peer-review

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Abstract

The suitability of 0.1 Hz VLF tangent delta (TD) and three different partial discharge (PD) measurement methods for condition assessment and commissioning measurements of MV underground cable systems were studied. On-site measurements were conducted in MV networks of 12 Finnish distribution network operators (DNOs) on a total of 100 three phase cable systems of different ages and 5 different cable types. Based on the TD measurement results the limits given in IEEE Std400.2-2013 seem too high for Finnish cable systems. No clear correlation between the PD and TD measurement results or the age of the cable and TD was observed. It could be concluded that the measurements complement each other revealing different degradation mechanisms. TD measurement does not reliably reveal the presence of PD and thus, for cable commissioning, PD measurement is recommended.

Original language	English
Title of host publication	25th International Conference on Electrical Distribution
Publisher	CIRED
Number of pages	5
ISBN (Electronic)	978-2-9602415-0-1
Publication status	Published - 2019
Publication type	A4 Article in conference proceedings
Event	International Conference on Electricity Distribution - IFEMA Convention Center, Madrid, Spain Duration: 3 Jun 2019 → 6 Jun 2019 Conference number: 25 http://www.cired2019.org/

Publication series

Name	CIRED conference proceedings
ISSN (Electronic)	2032-9644

Conference

Conference	International Conference on Electricity Distribution
Abbreviated title	CIRED 2019
Country/Territory	Spain
City	Madrid
Period	3/06/19 → 6/06/19
Internet address	http://www.cired2019.org/

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Publication forum level 1

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title = "Condition assessment of medium voltage underground cables based on tangent delta and partial discharge measurements",

abstract = "The suitability of 0.1 Hz VLF tangent delta (TD) and three different partial discharge (PD) measurement methods for condition assessment and commissioning measurements of MV underground cable systems were studied. On-site measurements were conducted in MV networks of 12 Finnish distribution network operators (DNOs) on a total of 100 three phase cable systems of different ages and 5 different cable types. Based on the TD measurement results the limits given in IEEE Std400.2-2013 seem too high for Finnish cable systems. No clear correlation between the PD and TD measurement results or the age of the cable and TD was observed. It could be concluded that the measurements complement each other revealing different degradation mechanisms. TD measurement does not reliably reveal the presence of PD and thus, for cable commissioning, PD measurement is recommended.",

author = "Pertti Pakonen and Juha Ker{\"a}nen and Tuomo Heinonen and Pekka Verho",

note = "jufoid=84298; International Conference on Electricity Distribution, CIRED 2019 ; Conference date: 03-06-2019 Through 06-06-2019",

year = "2019",

language = "English",

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publisher = "CIRED",

booktitle = "25th International Conference on Electrical Distribution",

url = "http://www.cired2019.org/",

}

Pakonen, P, Keränen, J, Heinonen, T & Verho, P 2019, Condition assessment of medium voltage underground cables based on tangent delta and partial discharge measurements. in 25th International Conference on Electrical Distribution., 1866, CIRED conference proceedings, CIRED, International Conference on Electricity Distribution, Madrid, Spain, 3/06/19. <http://urn.fi/URN:NBN:fi:tuni-202001301672>

Condition assessment of medium voltage underground cables based on tangent delta and partial discharge measurements. / Pakonen, Pertti; Keränen, Juha; Heinonen, Tuomo et al.

25th International Conference on Electrical Distribution. CIRED, 2019. 1866 (CIRED conference proceedings).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Scientific › peer-review

TY - GEN

T1 - Condition assessment of medium voltage underground cables based on tangent delta and partial discharge measurements

AU - Pakonen, Pertti

AU - Keränen, Juha

AU - Heinonen, Tuomo

AU - Verho, Pekka

N1 - Conference code: 25

PY - 2019

Y1 - 2019

N2 - The suitability of 0.1 Hz VLF tangent delta (TD) and three different partial discharge (PD) measurement methods for condition assessment and commissioning measurements of MV underground cable systems were studied. On-site measurements were conducted in MV networks of 12 Finnish distribution network operators (DNOs) on a total of 100 three phase cable systems of different ages and 5 different cable types. Based on the TD measurement results the limits given in IEEE Std400.2-2013 seem too high for Finnish cable systems. No clear correlation between the PD and TD measurement results or the age of the cable and TD was observed. It could be concluded that the measurements complement each other revealing different degradation mechanisms. TD measurement does not reliably reveal the presence of PD and thus, for cable commissioning, PD measurement is recommended.

AB - The suitability of 0.1 Hz VLF tangent delta (TD) and three different partial discharge (PD) measurement methods for condition assessment and commissioning measurements of MV underground cable systems were studied. On-site measurements were conducted in MV networks of 12 Finnish distribution network operators (DNOs) on a total of 100 three phase cable systems of different ages and 5 different cable types. Based on the TD measurement results the limits given in IEEE Std400.2-2013 seem too high for Finnish cable systems. No clear correlation between the PD and TD measurement results or the age of the cable and TD was observed. It could be concluded that the measurements complement each other revealing different degradation mechanisms. TD measurement does not reliably reveal the presence of PD and thus, for cable commissioning, PD measurement is recommended.

M3 - Conference contribution

T3 - CIRED conference proceedings

BT - 25th International Conference on Electrical Distribution

PB - CIRED

T2 - International Conference on Electricity Distribution

Y2 - 3 June 2019 through 6 June 2019

ER -

Condition assessment of medium voltage underground cables based on tangent delta and partial discharge measurements

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