Electric Field Distribution and AC Breakdown Characteristics of Polluted Novel Lightning Protection Insulator under Icing Conditions

As a result of lightning strikes, pollution, and ice, overhead distribution wires might be short-circuited and trip. As a result, researchers have developed a new lightning protection composite insulator. There is still a need to test its pollution and icing performance. Based on the finite element...

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Autores principales:	Jiazheng Lu, Jianping Hu, Zhen Fang, Xinhan Qiao, Zhijin Zhang
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	AC breakdown characteristics arresters lightning protection insulator electric field calculation icing conditions Technology T
Acceso en línea:	https://doaj.org/article/72270e0514824d8592134fa1d6530a46
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spelling	oai:doaj.org-article:72270e0514824d8592134fa1d6530a462021-11-25T17:25:59ZElectric Field Distribution and AC Breakdown Characteristics of Polluted Novel Lightning Protection Insulator under Icing Conditions10.3390/en142274931996-1073https://doaj.org/article/72270e0514824d8592134fa1d6530a462021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1073/14/22/7493https://doaj.org/toc/1996-1073As a result of lightning strikes, pollution, and ice, overhead distribution wires might be short-circuited and trip. As a result, researchers have developed a new lightning protection composite insulator. There is still a need to test its pollution and icing performance. Based on the finite element and field test method, this paper studies the electric field distribution and AC (Alternating Current) breakdown characteristics of polluted novel lightning protection insulators under icing conditions. Firstly, the finite element calculated results show that this novel insulator’s electric field distribution is different from that of a conventional insulator. The locations with sizeable electric fields are located in the insulation section, and the electric field in the arrester section is tiny. In addition, when the insulator surface is covered with ice, there is an increase in the electric field along the surface and pin electrodes. Compared with the dry conditions, when there is an ice layer and icicle, electric field peaks increase by 48.85% and 46.08%, respectively. Secondly, the test results show that there are three types of arc paths in different pollution levels. The arc paths are related to ESDD (equivalent salt deposit density) under icing conditions. <i>U<sub>f</sub></i> shows a downward trend with increased pollution levels, and the maximum flashover voltage is 2.70 times more than the minimum. Finally, four fitting methods are proposed in this paper. After comparing the goodness of fit of different functions, the quadratic function and negative power function with the constant term are recommended as empirical formulas for calculating flashover voltage of novel insulators under icing conditions in different pollution levels. The research results of this paper have a specific guiding role for the selection of the external insulation of transmission lines and structural optimization of novel insulators.Jiazheng LuJianping HuZhen FangXinhan QiaoZhijin ZhangMDPI AGarticleAC breakdown characteristicsarresterslightning protection insulatorelectric field calculationicing conditionsTechnologyTENEnergies, Vol 14, Iss 7493, p 7493 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	AC breakdown characteristics arresters lightning protection insulator electric field calculation icing conditions Technology T
spellingShingle	AC breakdown characteristics arresters lightning protection insulator electric field calculation icing conditions Technology T Jiazheng Lu Jianping Hu Zhen Fang Xinhan Qiao Zhijin Zhang Electric Field Distribution and AC Breakdown Characteristics of Polluted Novel Lightning Protection Insulator under Icing Conditions
description	As a result of lightning strikes, pollution, and ice, overhead distribution wires might be short-circuited and trip. As a result, researchers have developed a new lightning protection composite insulator. There is still a need to test its pollution and icing performance. Based on the finite element and field test method, this paper studies the electric field distribution and AC (Alternating Current) breakdown characteristics of polluted novel lightning protection insulators under icing conditions. Firstly, the finite element calculated results show that this novel insulator’s electric field distribution is different from that of a conventional insulator. The locations with sizeable electric fields are located in the insulation section, and the electric field in the arrester section is tiny. In addition, when the insulator surface is covered with ice, there is an increase in the electric field along the surface and pin electrodes. Compared with the dry conditions, when there is an ice layer and icicle, electric field peaks increase by 48.85% and 46.08%, respectively. Secondly, the test results show that there are three types of arc paths in different pollution levels. The arc paths are related to ESDD (equivalent salt deposit density) under icing conditions. <i>U<sub>f</sub></i> shows a downward trend with increased pollution levels, and the maximum flashover voltage is 2.70 times more than the minimum. Finally, four fitting methods are proposed in this paper. After comparing the goodness of fit of different functions, the quadratic function and negative power function with the constant term are recommended as empirical formulas for calculating flashover voltage of novel insulators under icing conditions in different pollution levels. The research results of this paper have a specific guiding role for the selection of the external insulation of transmission lines and structural optimization of novel insulators.
format	article
author	Jiazheng Lu Jianping Hu Zhen Fang Xinhan Qiao Zhijin Zhang
author_facet	Jiazheng Lu Jianping Hu Zhen Fang Xinhan Qiao Zhijin Zhang
author_sort	Jiazheng Lu
title	Electric Field Distribution and AC Breakdown Characteristics of Polluted Novel Lightning Protection Insulator under Icing Conditions
title_short	Electric Field Distribution and AC Breakdown Characteristics of Polluted Novel Lightning Protection Insulator under Icing Conditions
title_full	Electric Field Distribution and AC Breakdown Characteristics of Polluted Novel Lightning Protection Insulator under Icing Conditions
title_fullStr	Electric Field Distribution and AC Breakdown Characteristics of Polluted Novel Lightning Protection Insulator under Icing Conditions
title_full_unstemmed	Electric Field Distribution and AC Breakdown Characteristics of Polluted Novel Lightning Protection Insulator under Icing Conditions
title_sort	electric field distribution and ac breakdown characteristics of polluted novel lightning protection insulator under icing conditions
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/72270e0514824d8592134fa1d6530a46
work_keys_str_mv	AT jiazhenglu electricfielddistributionandacbreakdowncharacteristicsofpollutednovellightningprotectioninsulatorundericingconditions AT jianpinghu electricfielddistributionandacbreakdowncharacteristicsofpollutednovellightningprotectioninsulatorundericingconditions AT zhenfang electricfielddistributionandacbreakdowncharacteristicsofpollutednovellightningprotectioninsulatorundericingconditions AT xinhanqiao electricfielddistributionandacbreakdowncharacteristicsofpollutednovellightningprotectioninsulatorundericingconditions AT zhijinzhang electricfielddistributionandacbreakdowncharacteristicsofpollutednovellightningprotectioninsulatorundericingconditions
_version_	1718412355929374720

Electric Field Distribution and AC Breakdown Characteristics of Polluted Novel Lightning Protection Insulator under Icing Conditions

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