Research on External Insulation Characteristics of Composite Cross-Arm of 10 kV Distribution Network Based on Multi-Factor Aging
With the application of the composite cross-arm in power systems, comprehensive anti-aging performance is a key factor to determine whether it can operate safely. In order to study the influence of the operating environment on the external insulation characteristics of composite cross-arms of distri...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-03-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/14/7/1403 |
| _version_ | 1797437962202382336 |
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| author | Zhongyuan Zhang Junwei Qi Hechen Liu Wanxian Wang Mingjia Zhang Xuan Wu |
| author_facet | Zhongyuan Zhang Junwei Qi Hechen Liu Wanxian Wang Mingjia Zhang Xuan Wu |
| author_sort | Zhongyuan Zhang |
| collection | DOAJ |
| description | With the application of the composite cross-arm in power systems, comprehensive anti-aging performance is a key factor to determine whether it can operate safely. In order to study the influence of the operating environment on the external insulation characteristics of composite cross-arms of distribution networks, various aging conditions such as voltage, rain, temperature, humidity, salt fog and ultraviolet light were simulated in a climate chamber based on the real operation conditions of the 10-kV composite cross-arm. A multi-factor aging test of composite cross-arms with two kinds of cross-section shapes (T-shaped and square) was carried out for 5000 h. The change trends of leakage current and flashover voltage of the composite cross-arms before and after aging were analyzed. Finally, the aging mechanism of the silicone rubber sheaths was analyzed to further explain the reasons for the change of external insulation performance of composite cross-arms. The results show that the leakage current rising rate of T-shaped and square composite cross-arms after aging increases significantly, and the minimum flashover voltage decreases to 58.3 kV and 49.502 kV, respectively. The results of FTIR, SEM and hydrophobic angle tests show that, after aging, the performance of the silicone rubber outer sheath material decreases in varying degrees. In general, UV aging has the greatest influence on the external insulation characteristics of composite cross arms. Generally speaking, after 5000 h of multi factor aging, although the external insulation characteristics of the 10-kV composite cross-arm decreases to a certain extent, there is still enough margin to meet the normal operation. |
| first_indexed | 2024-03-09T11:29:10Z |
| format | Article |
| id | doaj.art-1221d27b84534494a1ff9016d67c1f8a |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-09T11:29:10Z |
| publishDate | 2022-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-1221d27b84534494a1ff9016d67c1f8a2023-11-30T23:53:57ZengMDPI AGPolymers2073-43602022-03-01147140310.3390/polym14071403Research on External Insulation Characteristics of Composite Cross-Arm of 10 kV Distribution Network Based on Multi-Factor AgingZhongyuan Zhang0Junwei Qi1Hechen Liu2Wanxian Wang3Mingjia Zhang4Xuan Wu5Hebei Provincial Key Laboratory of Power Transmission Equipment Security, School of Electrical Engineering, North China Electric Power University, Baoding 071003, ChinaHebei Provincial Key Laboratory of Power Transmission Equipment Security, School of Electrical Engineering, North China Electric Power University, Baoding 071003, ChinaHebei Provincial Key Laboratory of Power Transmission Equipment Security, School of Electrical Engineering, North China Electric Power University, Baoding 071003, ChinaHebei Provincial Key Laboratory of Power Transmission Equipment Security, School of Electrical Engineering, North China Electric Power University, Baoding 071003, ChinaHebei Provincial Key Laboratory of Power Transmission Equipment Security, School of Electrical Engineering, North China Electric Power University, Baoding 071003, ChinaHebei Provincial Key Laboratory of Power Transmission Equipment Security, School of Electrical Engineering, North China Electric Power University, Baoding 071003, ChinaWith the application of the composite cross-arm in power systems, comprehensive anti-aging performance is a key factor to determine whether it can operate safely. In order to study the influence of the operating environment on the external insulation characteristics of composite cross-arms of distribution networks, various aging conditions such as voltage, rain, temperature, humidity, salt fog and ultraviolet light were simulated in a climate chamber based on the real operation conditions of the 10-kV composite cross-arm. A multi-factor aging test of composite cross-arms with two kinds of cross-section shapes (T-shaped and square) was carried out for 5000 h. The change trends of leakage current and flashover voltage of the composite cross-arms before and after aging were analyzed. Finally, the aging mechanism of the silicone rubber sheaths was analyzed to further explain the reasons for the change of external insulation performance of composite cross-arms. The results show that the leakage current rising rate of T-shaped and square composite cross-arms after aging increases significantly, and the minimum flashover voltage decreases to 58.3 kV and 49.502 kV, respectively. The results of FTIR, SEM and hydrophobic angle tests show that, after aging, the performance of the silicone rubber outer sheath material decreases in varying degrees. In general, UV aging has the greatest influence on the external insulation characteristics of composite cross arms. Generally speaking, after 5000 h of multi factor aging, although the external insulation characteristics of the 10-kV composite cross-arm decreases to a certain extent, there is still enough margin to meet the normal operation.https://www.mdpi.com/2073-4360/14/7/1403multi-factor aging systemcomposite cross-arms of distribution networkselectrical external insulation characteristicssilicone rubber sheathhydrophobicityscanning electron microscope |
| spellingShingle | Zhongyuan Zhang Junwei Qi Hechen Liu Wanxian Wang Mingjia Zhang Xuan Wu Research on External Insulation Characteristics of Composite Cross-Arm of 10 kV Distribution Network Based on Multi-Factor Aging Polymers multi-factor aging system composite cross-arms of distribution networks electrical external insulation characteristics silicone rubber sheath hydrophobicity scanning electron microscope |
| title | Research on External Insulation Characteristics of Composite Cross-Arm of 10 kV Distribution Network Based on Multi-Factor Aging |
| title_full | Research on External Insulation Characteristics of Composite Cross-Arm of 10 kV Distribution Network Based on Multi-Factor Aging |
| title_fullStr | Research on External Insulation Characteristics of Composite Cross-Arm of 10 kV Distribution Network Based on Multi-Factor Aging |
| title_full_unstemmed | Research on External Insulation Characteristics of Composite Cross-Arm of 10 kV Distribution Network Based on Multi-Factor Aging |
| title_short | Research on External Insulation Characteristics of Composite Cross-Arm of 10 kV Distribution Network Based on Multi-Factor Aging |
| title_sort | research on external insulation characteristics of composite cross arm of 10 kv distribution network based on multi factor aging |
| topic | multi-factor aging system composite cross-arms of distribution networks electrical external insulation characteristics silicone rubber sheath hydrophobicity scanning electron microscope |
| url | https://www.mdpi.com/2073-4360/14/7/1403 |
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