Predictive Model for Equivalent Ice Thickness Load on Overhead Transmission Lines Based on Measured Insulator String Deviations

被引：51

作者：

Jiang, Xingliang ^{[1
]}

Xiang, Ze ^{[1
]}

Zhang, Zhijin ^{[1
]}

Hu, Jianlin ^{[1
]}

Hu, Qin ^{[1
]}

Shu, Lichun ^{[1
]}

机构：

[1] Chongqing Univ, State Key Lab Power Transmiss Equipment & Syst Se, Chongqing 400044, Peoples R China

来源：

IEEE TRANSACTIONS ON POWER DELIVERY | 2014年 / 29卷 / 04期

基金：

中国国家自然科学基金;

关键词：

Angle; correction coefficient of ice shape; icing thickness; mechanical calculation model; overhead transmission line; STATISTICAL-ANALYSIS; ACCRETION;

D O I：

10.1109/TPWRD.2014.2305980

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Transmission-line icing presents a serious threat to the safe operation of power systems. Therefore, the icing condition of overhead transmission lines must be accurately calculated for online monitoring and prewarning systems. Based on the icing data obtained at Xuefeng Mountain Natural Icing Stations (XMNIS), the cross-sectional shape of glaze icing on conductors was studied, and the correction coefficient of the actual nonuniform ice was proposed to provide an accurate and convenient method for field icing measurement. In addition, by analyzing the characteristics of the tension and tilt of the insulator string at the iced tangent tower, a new mechanical calculation model considering the ice and wind loads was established. One-month field observations and experiments were conducted in XMNIS, and it is shown that the calculation results have good agreement with experiment results, which suggests that the model can be used for ice thickness calculation and online monitoring on transmission lines.

引用

页码：1659 / 1665

页数：7

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