摘要
国内外针对输电线路覆冰观测,采取的有效且能直接掌握线路覆冰类型的方式是通过部署模拟导线观冰方式,但由于目前有效观测资料较少,由模拟导线冰厚折算至导线实际位置冰厚时可采用的规程中高度变化指数取值较单一,没有区分不同地形区域,导致折算出的冰厚与实际情况仍存在较大差异。为此,分别选取一般地形、微地形、极微地形三个典型代表区域覆冰观测资料,建立不同地形区域,模拟导线2 m、5 m高度冰厚与实际覆冰厚度之间关系模型,并给出不同微地形区域高度变化指数细化取值。研究结果可为优化现有覆冰观测规程规范参数取值提供参考。
For transmission line icing observation at home and abroad,the effective and direct way to master the type of line icing is to deploy simulated conductor ice observation.However,due to the lack of effective observation data at present,the height change index in the regulations that can be used to convert the ice thickness from the simulated conductor ice thickness to the actual position ice thickness of the conductor is relatively single,and different terrain areas are not distinguished,resulting in great differences between the converted ice thickness and the actual situation.Therefore,the ice cover observation data of three typical representative areas of general terrain,micro terrain and very micro terrain are selected to establish different terrain areas.The relationship model between the ice thickness at the height of 2 m and 5 m of the simulated conductor and the actual ice thickness is established,and the refined value of the height change index in different micro terrain areas is given.The results can provide a reference for optimizing the parameters of the existing icing observation regulations.
作者
何思阳
HE Siyang(Duyun Power Supply Bureau of Guizhou Power Grid Co.,Ltd.,Duyun 558000,China)
出处
《电工技术》
2022年第1期69-70,72,共3页
Electric Engineering
关键词
模拟导线
折算
高度
指数
最小二乘法
analog conductor
conversion
height
index
least square method
