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Lightning flashover characteristics and lightning resistance level of composite insulated cross-arm for distribution network
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Yunpeng LIU1, Xubin CHEN2, Hechen LIU2, Ping WANG2, Lei LIU3
Insulating Materials | 2023, 56(3) : 107 - 114
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Insulating Materials | 2023, 56(3): 107-114
• Test and Analysis •
Lightning flashover characteristics and lightning resistance level of composite insulated cross-arm for distribution network
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Yunpeng LIU1, Xubin CHEN2, Hechen LIU2, Ping WANG2, Lei LIU3
Affiliations
  • 1State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, China
  • 2Hebei Provincial Key Laboratory of Power Transmission Equipment Security Defense, North China Electric Power University, Baoding 071003, China
  • 3Electric Power Research Institute of China Southern Power Grid, Guangzhou 510000, China
Published: 2023-03-20 doi: 10.16790/j.cnki.1009-9239.im.2023.03.016
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The lightning impulse 50% breakdown voltage (U50%) of the insulators used on the traditional iron cross-arm is relatively low, which leads to lightning breakage of the insulated conductor. Therefore, the composite insulated cross-arm, with good insulation performance, high strength, and light weight, has received significant attention and can help to improve the lightning resistance level of distribution network. In order to further study the lightning protection performance of the composite insulated cross-arm, lightning impulse flashover tests were conducted at different altitudes to obtain the U50% and volt-second characteristic curves of the 10 kV composite insulated cross-arm. On the basis of the tests, a lightning strike simulation model of 10 kV lines was established by using the ATP-EMTP software to calculate the lightning resistance level of the composite insulated cross-arm. The results show that at an altitude of 22 m, the positive and negative polarities of U50% of the composite insulated cross-arm are 415.43 kV and 589.14 kV, respectively, while those of the pin insulator are 151.05 kV and 200.77 kV, respectively. At an altitude of 2 100 m, the lightning resistance level of the composite insulated cross-arm decreases by about 20%, but it is still much higher than that of the pin insulator. Therefore, the composite insulated cross-arm shows excellent lightning protection performance and has broad application prospects.

composite insulated cross-arm  /  lightning impulse flashover test  /  volt-second characteristic  /  lightning resistance level
Yunpeng LIU, Xubin CHEN, Hechen LIU, Ping WANG, Lei LIU. Lightning flashover characteristics and lightning resistance level of composite insulated cross-arm for distribution network[J]. Insulating Materials, 2023 , 56 (3) : 107 -114 . DOI: 10.16790/j.cnki.1009-9239.im.2023.03.016
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Year 2023 volume 56 Issue 3
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Article Info
doi: 10.16790/j.cnki.1009-9239.im.2023.03.016
  • Receive Date：2022-03-29
  • Online Date：2025-11-21
  • Published：2023-03-20
Article Data
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History
  • Received：2022-03-29
  • Revised：2022-05-24
Funding
Affiliations
    1State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, China
    2Hebei Provincial Key Laboratory of Power Transmission Equipment Security Defense, North China Electric Power University, Baoding 071003, China
    3Electric Power Research Institute of China Southern Power Grid, Guangzhou 510000, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
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Genus		 种数
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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