Electrical Tree Initiation in LDPE under Positive DC Stresses Superimposed with AC Ripples

F. Liu; S. M. Rowland; V. Peesapati; H. Zheng

doi:10.1109/icd46958.2020.9341913

Electrical Tree Initiation in LDPE under Positive DC Stresses Superimposed with AC Ripples

F. Liu, S. M. Rowland, V. Peesapati, H. Zheng

EEE - Academic & Research

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

Abstract

Electrical tree initiation in LDPE under positive DC stresses with controlled AC ripple is investigated. Needle-plane geometries were used and partial discharge (PD) signals recorded. Tree initiation occurred around +45 kV, and the initial growth within the first second was long compared to the more gradual processes seen with AC excitation. In each case, when the first tree image was captured, they were of the branch type and at least one order of magnitude longer than those seen under pure AC stresses. 5 kV peak AC superimposed onto +45 kV led to rapid sample failure. Unlike in pure AC cases, PD detection did not correlate well with the progress of electrical treeing (initiation, growth or breakdown) under pure DC stresses. Phase resolved PD analysis did however provide useful information in the presence of an AC ripple.

Original language	English
Title of host publication	2020 IEEE 3rd International Conference on Dielectrics (ICD)
Publisher	IEEE
Pages	21-24
Number of pages	4
ISBN (Electronic)	9781728189833
ISBN (Print)	9781728189840
DOIs	https://doi.org/10.1109/icd46958.2020.9341913
Publication status	Published - 4 Feb 2021
Event	3rd IEEE International Conference on Dielectrics, ICD 2020 - Virtual, Valencia, Spain Duration: 5 Jul 2020 → 9 Jul 2020

Conference

Conference	3rd IEEE International Conference on Dielectrics, ICD 2020
Country/Territory	Spain
City	Virtual, Valencia
Period	5/07/20 → 9/07/20

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10.1109/icd46958.2020.9341913

Cite this

@inproceedings{d6c810f13f66471e99d29a93b3a2a17f,

title = "Electrical Tree Initiation in LDPE under Positive DC Stresses Superimposed with AC Ripples",

abstract = "Electrical tree initiation in LDPE under positive DC stresses with controlled AC ripple is investigated. Needle-plane geometries were used and partial discharge (PD) signals recorded. Tree initiation occurred around +45 kV, and the initial growth within the first second was long compared to the more gradual processes seen with AC excitation. In each case, when the first tree image was captured, they were of the branch type and at least one order of magnitude longer than those seen under pure AC stresses. 5 kV peak AC superimposed onto +45 kV led to rapid sample failure. Unlike in pure AC cases, PD detection did not correlate well with the progress of electrical treeing (initiation, growth or breakdown) under pure DC stresses. Phase resolved PD analysis did however provide useful information in the presence of an AC ripple.",

author = "F. Liu and Rowland, \{S. M.\} and V. Peesapati and H. Zheng",

year = "2021",

month = feb,

day = "4",

doi = "10.1109/icd46958.2020.9341913",

language = "English",

isbn = "9781728189840",

pages = "21--24",

booktitle = "2020 IEEE 3rd International Conference on Dielectrics (ICD)",

publisher = "IEEE",

address = "United States",

note = "3rd IEEE International Conference on Dielectrics, ICD 2020 ; Conference date: 05-07-2020 Through 09-07-2020",

}

TY - GEN

T1 - Electrical Tree Initiation in LDPE under Positive DC Stresses Superimposed with AC Ripples

AU - Liu, F.

AU - Rowland, S. M.

AU - Peesapati, V.

AU - Zheng, H.

PY - 2021/2/4

Y1 - 2021/2/4

N2 - Electrical tree initiation in LDPE under positive DC stresses with controlled AC ripple is investigated. Needle-plane geometries were used and partial discharge (PD) signals recorded. Tree initiation occurred around +45 kV, and the initial growth within the first second was long compared to the more gradual processes seen with AC excitation. In each case, when the first tree image was captured, they were of the branch type and at least one order of magnitude longer than those seen under pure AC stresses. 5 kV peak AC superimposed onto +45 kV led to rapid sample failure. Unlike in pure AC cases, PD detection did not correlate well with the progress of electrical treeing (initiation, growth or breakdown) under pure DC stresses. Phase resolved PD analysis did however provide useful information in the presence of an AC ripple.

AB - Electrical tree initiation in LDPE under positive DC stresses with controlled AC ripple is investigated. Needle-plane geometries were used and partial discharge (PD) signals recorded. Tree initiation occurred around +45 kV, and the initial growth within the first second was long compared to the more gradual processes seen with AC excitation. In each case, when the first tree image was captured, they were of the branch type and at least one order of magnitude longer than those seen under pure AC stresses. 5 kV peak AC superimposed onto +45 kV led to rapid sample failure. Unlike in pure AC cases, PD detection did not correlate well with the progress of electrical treeing (initiation, growth or breakdown) under pure DC stresses. Phase resolved PD analysis did however provide useful information in the presence of an AC ripple.

UR - https://www.scopus.com/pages/publications/85101283680

U2 - 10.1109/icd46958.2020.9341913

DO - 10.1109/icd46958.2020.9341913

M3 - Conference contribution

SN - 9781728189840

SP - 21

EP - 24

BT - 2020 IEEE 3rd International Conference on Dielectrics (ICD)

PB - IEEE

T2 - 3rd IEEE International Conference on Dielectrics, ICD 2020

Y2 - 5 July 2020 through 9 July 2020

ER -

Electrical Tree Initiation in LDPE under Positive DC Stresses Superimposed with AC Ripples

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