Electrical Trees and Their Growth in Silicone Rubber at Various Voltage Frequencies
The insulation property at high voltage frequencies has become a tough challenge with the rapid development of high-voltage and high-frequency power electronics. In this paper, the electrical treeing behavior of silicone rubber (SIR) is examined and determined at various voltage frequencies, ranging...
Main Authors: | , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
MDPI AG
2018-02-01
|
Series: | Energies |
Subjects: | |
Online Access: | http://www.mdpi.com/1996-1073/11/2/327 |
id |
doaj-de62b0eeae944c70bc424c62396e88cc |
---|---|
record_format |
Article |
spelling |
doaj-de62b0eeae944c70bc424c62396e88cc2020-11-24T22:53:44ZengMDPI AGEnergies1996-10732018-02-0111232710.3390/en11020327en11020327Electrical Trees and Their Growth in Silicone Rubber at Various Voltage FrequenciesYunxiao Zhang0Yuanxiang Zhou1Ling Zhang2Zhongliu Zhou3Qiong Nie4State Key Lab of Electrical Power System, Department of Electrical Engineering, Tsinghua University, Beijing 100084, ChinaState Key Lab of Electrical Power System, Department of Electrical Engineering, Tsinghua University, Beijing 100084, ChinaState Key Lab of Electrical Power System, Department of Electrical Engineering, Tsinghua University, Beijing 100084, ChinaState Key Lab of Electrical Power System, Department of Electrical Engineering, Tsinghua University, Beijing 100084, ChinaAC Project Construction Branch, State Grid Corporation of China, Beijing 100052, ChinaThe insulation property at high voltage frequencies has become a tough challenge with the rapid development of high-voltage and high-frequency power electronics. In this paper, the electrical treeing behavior of silicone rubber (SIR) is examined and determined at various voltage frequencies, ranging from 50 Hz to 130 kHz. The results show that the initiation voltage of electrical trees decreased by 27.9% monotonically, and they became denser when the voltage frequency increased. A bubble-shaped deterioration phenomenon was observed when the voltage frequency exceeded 100 kHz. We analyze the typical treeing growth pattern at 50 Hz (including pine-like treeing growth and bush-like treeing growth) and the bubble-growing pattern at 130 kHz. Bubbles grew exponentially within several seconds. Moreover, bubble cavities were detected in electrical tree channels at 50 Hz. Combined with the bubble-growing characteristics at 130 kHz, a potential growing model for electrical trees and bubbles in SIR is proposed to explain the growing patterns at various voltage frequencies.http://www.mdpi.com/1996-1073/11/2/327silicone rubberelectrical treebubblehigh frequencyinitiation voltagegrowing model |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Yunxiao Zhang Yuanxiang Zhou Ling Zhang Zhongliu Zhou Qiong Nie |
spellingShingle |
Yunxiao Zhang Yuanxiang Zhou Ling Zhang Zhongliu Zhou Qiong Nie Electrical Trees and Their Growth in Silicone Rubber at Various Voltage Frequencies Energies silicone rubber electrical tree bubble high frequency initiation voltage growing model |
author_facet |
Yunxiao Zhang Yuanxiang Zhou Ling Zhang Zhongliu Zhou Qiong Nie |
author_sort |
Yunxiao Zhang |
title |
Electrical Trees and Their Growth in Silicone Rubber at Various Voltage Frequencies |
title_short |
Electrical Trees and Their Growth in Silicone Rubber at Various Voltage Frequencies |
title_full |
Electrical Trees and Their Growth in Silicone Rubber at Various Voltage Frequencies |
title_fullStr |
Electrical Trees and Their Growth in Silicone Rubber at Various Voltage Frequencies |
title_full_unstemmed |
Electrical Trees and Their Growth in Silicone Rubber at Various Voltage Frequencies |
title_sort |
electrical trees and their growth in silicone rubber at various voltage frequencies |
publisher |
MDPI AG |
series |
Energies |
issn |
1996-1073 |
publishDate |
2018-02-01 |
description |
The insulation property at high voltage frequencies has become a tough challenge with the rapid development of high-voltage and high-frequency power electronics. In this paper, the electrical treeing behavior of silicone rubber (SIR) is examined and determined at various voltage frequencies, ranging from 50 Hz to 130 kHz. The results show that the initiation voltage of electrical trees decreased by 27.9% monotonically, and they became denser when the voltage frequency increased. A bubble-shaped deterioration phenomenon was observed when the voltage frequency exceeded 100 kHz. We analyze the typical treeing growth pattern at 50 Hz (including pine-like treeing growth and bush-like treeing growth) and the bubble-growing pattern at 130 kHz. Bubbles grew exponentially within several seconds. Moreover, bubble cavities were detected in electrical tree channels at 50 Hz. Combined with the bubble-growing characteristics at 130 kHz, a potential growing model for electrical trees and bubbles in SIR is proposed to explain the growing patterns at various voltage frequencies. |
topic |
silicone rubber electrical tree bubble high frequency initiation voltage growing model |
url |
http://www.mdpi.com/1996-1073/11/2/327 |
work_keys_str_mv |
AT yunxiaozhang electricaltreesandtheirgrowthinsiliconerubberatvariousvoltagefrequencies AT yuanxiangzhou electricaltreesandtheirgrowthinsiliconerubberatvariousvoltagefrequencies AT lingzhang electricaltreesandtheirgrowthinsiliconerubberatvariousvoltagefrequencies AT zhongliuzhou electricaltreesandtheirgrowthinsiliconerubberatvariousvoltagefrequencies AT qiongnie electricaltreesandtheirgrowthinsiliconerubberatvariousvoltagefrequencies |
_version_ |
1725662179500228608 |