1.国网重庆市电力公司电力科学研究院;2.重庆大学雪峰山能源装备安全国家野外科学观测研究站;3.重庆地格科技有限责任公司;4.国网重庆市电力公司市北供电分公司
U448.213???????
国网重庆电科院基于电磁脉冲的输电线路地线除冰方法及装置研究服务(SGTYHT/21-JS-223)
1.Institute of Electric Power Science,State Grid Chongqing Electric Power Company;2.Xue feng Mountain Energy Equipment Safety National Observation and Research Station of Chongqing University;3.Chongqing Digitec Technology Co Ltd;4.Shi Bei Power Supply Branch,State Grid Chongqing Electric Power Company
Supported by project of State Grid Chongqing Academy of Electrical Sciences. (SGTYHT/21-JS-223).
架空地线覆冰是目前制约电网冬季可靠运行的主要威胁之一。本文在电脉冲除冰技术基础上，提出将电脉冲力峰值及其冲量作为电脉冲除冰器脉冲线圈形式选择依据，建立除冰器电脉冲力数值计算模型，根据该数值计算模型设计适用于地线的五种线圈形式，仿真分析不同形式下除冰器磁通密度、涡流大小、电脉冲力波形及分布特性。在人工和自然覆冰环境下进行不同形式电脉冲除冰器除冰实验并测量地线除冰长度，结果表明：脉冲力计算模型平均误差小于5%；平板线圈电脉冲力峰值及冲量均为圆弧线圈的1.4倍；人工混合淞覆冰平板除冰器除冰效率是圆弧除冰器的3.1倍；自然雨凇时方形线圈除冰器最大除冰长度为4.2 m，饼式线圈除冰器最大除冰长度为2.73 m。结果证明了后续对平板除冰器进一步优化和进行长档距多脉冲系统除冰研究的可行性。
Overhead ground wire icing is one of the main threats to the reliable operation of power grid in winter. Based on the electric pulse deicing technology, this paper proposes to use the peak value and impulse of the electric pulse force as the basis for the selection of the pulse coil form of the electric pulse deicing device, and establish a numerical calculation model of the electric pulse force of the de-icer. Five types of coils are designed according to the numerical calculation model for the ground line, and the simulation analysis of the magnetic density, eddy current size, electric pulse force waveform and distribution characteristics of the de-icer under different forms. The de-icing experiments of different forms of electric pulse de-icing devices were carried out under artificial and natural icing conditions, and the de-icing length of the ground wire was measured, The results show that the experiment proves that the average error of the pulse force calculation model is less than 5%. The peak electric pulse force and impulse volume of the flat coil are 1.4 times higher than those of the circular coil. The de-icing efficiency of the artificial mixed-song icing plate de-icing device is 3.1 times that of the arc de-icing device. The maximum de-icing length of square coil de-icer is 4.2 m when freezing rain, and the maximum de-icing length of cake coil de-icer is 2.73 m. These results prove the feasibility of further optimizing the flat plate deicer and conducting research on long span multi pulse system deicing in the future.
