Conductor Galloping Distribution Map of Liaoning Province Developed with Specific Return Period
The galloping distribution map plays a key role for anti-galloping design of overhead transmission lines, it is thus urgent to scientifically develop a regional galloping distribution map dedicated for the power grid. Based on the historical meteorological data of 62 meteorological stations in Liaon...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
State Grid Energy Research Institute
2022-08-01
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| Series: | Zhongguo dianli |
| Subjects: | |
| Online Access: | https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.202011010 |
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| Summary: | The galloping distribution map plays a key role for anti-galloping design of overhead transmission lines, it is thus urgent to scientifically develop a regional galloping distribution map dedicated for the power grid. Based on the historical meteorological data of 62 meteorological stations in Liaoning Province for the winter of 1999-2020, the number of extremum galloping days with the return period of 30a, 50a and 100a is achieved respectively using the generalized extreme value distribution model. The principles for grading conductor galloping are proposed, and the extremum galloping days with a specific return period in the areas around the meteorological stations are obtained with the Krieger interpolation method. Finally, according to the galloping grading principles, the distribution maps of Liaoning Province with the return period of 30a, 50a and 100a are developed respectively, which are suitable for 110-220 kV, 330-750 kV, and UHV AC and DC lines. The developed galloping distribution map with a specific return period is basically consistent with the historical galloping record in Liaoning Province, which is of great significance to improve the ability and level of the power grid to resist the galloping disaster. |
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| ISSN: | 1004-9649 |