Overhead Transmission Lines Deicing under Different Incentive Displacement
Overhead transmission line icing is one of the main factors affecting safety and reliability of power grid. This paper proposed an excitation deicing method of iced wire and theoretically revealed the ice removal mechanism under displacement excitation conditions, by taking the LGJ-70/10 glaze icing...
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| Format: | Article |
| Language: | English |
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Wiley
2014-01-01
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| Series: | Journal of Applied Mathematics |
| Online Access: | http://dx.doi.org/10.1155/2014/872198 |
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| author | Qing He Xi-feng Lv Xiao-tong Zhao |
| author_facet | Qing He Xi-feng Lv Xiao-tong Zhao |
| author_sort | Qing He |
| collection | DOAJ |
| description | Overhead transmission line icing is one of the main factors affecting safety and reliability of power grid. This paper proposed an excitation deicing method of iced wire and theoretically revealed the ice removal mechanism under displacement excitation conditions, by taking the LGJ-70/10 glaze icing wire as the 3D model and analyzing and studying its dynamic response under the effect of displacement excitation. The simulation results show that the stress of wire icing area is enlarged with the increase of excitation displacement and frequency. Through the comparison of the compression strength experimental results on a series of different iced wires in low temperature environment, the authors found out that the stress generated from the wire icing area is greater than the crushing strength of the ice within the scope of the calculation parameters, which proved the validity and the feasibility of the method, and finally the suitable excitation displacement is determined. Following studies show that, as far as possible, it is necessary to reduce the incentive displacement and also to select the appropriate constraint length in order to avoid the line jumping that may be caused by large span ice shedding. |
| format | Article |
| id | doaj-art-027a3078d29f4b6dbfe1199ad83a4505 |
| institution | Kabale University |
| issn | 1110-757X 1687-0042 |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Applied Mathematics |
| spelling | doaj-art-027a3078d29f4b6dbfe1199ad83a45052025-02-03T00:59:47ZengWileyJournal of Applied Mathematics1110-757X1687-00422014-01-01201410.1155/2014/872198872198Overhead Transmission Lines Deicing under Different Incentive DisplacementQing He0Xi-feng Lv1Xiao-tong Zhao2School of Energy Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, ChinaSchool of Energy Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, ChinaDivision of Electric Power System, China Electric Power Research Institute, Beijing 100192, ChinaOverhead transmission line icing is one of the main factors affecting safety and reliability of power grid. This paper proposed an excitation deicing method of iced wire and theoretically revealed the ice removal mechanism under displacement excitation conditions, by taking the LGJ-70/10 glaze icing wire as the 3D model and analyzing and studying its dynamic response under the effect of displacement excitation. The simulation results show that the stress of wire icing area is enlarged with the increase of excitation displacement and frequency. Through the comparison of the compression strength experimental results on a series of different iced wires in low temperature environment, the authors found out that the stress generated from the wire icing area is greater than the crushing strength of the ice within the scope of the calculation parameters, which proved the validity and the feasibility of the method, and finally the suitable excitation displacement is determined. Following studies show that, as far as possible, it is necessary to reduce the incentive displacement and also to select the appropriate constraint length in order to avoid the line jumping that may be caused by large span ice shedding.http://dx.doi.org/10.1155/2014/872198 |
| spellingShingle | Qing He Xi-feng Lv Xiao-tong Zhao Overhead Transmission Lines Deicing under Different Incentive Displacement Journal of Applied Mathematics |
| title | Overhead Transmission Lines Deicing under Different Incentive Displacement |
| title_full | Overhead Transmission Lines Deicing under Different Incentive Displacement |
| title_fullStr | Overhead Transmission Lines Deicing under Different Incentive Displacement |
| title_full_unstemmed | Overhead Transmission Lines Deicing under Different Incentive Displacement |
| title_short | Overhead Transmission Lines Deicing under Different Incentive Displacement |
| title_sort | overhead transmission lines deicing under different incentive displacement |
| url | http://dx.doi.org/10.1155/2014/872198 |
| work_keys_str_mv | AT qinghe overheadtransmissionlinesdeicingunderdifferentincentivedisplacement AT xifenglv overheadtransmissionlinesdeicingunderdifferentincentivedisplacement AT xiaotongzhao overheadtransmissionlinesdeicingunderdifferentincentivedisplacement |