摘要
冰雪极寒天气引起的严重覆冰可能导致输电线路断裂等事故,随着人工智能技术的发展,除冰机器人成为极寒天气下保障电力线路稳定运行的有效手段。为了提高除冰效率,针对硬度较大的雨凇型覆冰,本文在除冰机器人常规冲击除冰装置基础上,提出了偏心除冰锤敲击式装置的设计方案,利用线路的振动降低覆冰黏附力。同时,本文提出了“敲击式除冰机器人‒架空线路振动数学模型”,分析了机器人除冰时的线路舞动情况以及除冰锤转速与线路位移的关系。针对雪花和雨凇型覆冰,在气候实验室采用敲击式除冰机器人进行除冰作业,得到机器人除冰工作时线路中部振动位移特性,并通过ANSYS仿真对除冰过程进行模拟,对比分析了试验和计算结果。对比分析表明:线路振动位移和频率随除冰锤转速和覆冰厚度的增加而增大;采用除冰刀冲击配合除冰锤敲击旋转除冰效果最佳;为了节约能量,对于雪花型覆冰可只采用除冰锤敲击振落,0 mm~10 mm覆冰只需使用除冰刀冲击铲除,超过10 mm的覆冰则需要二者协同清除。
Severe ice icing caused by extremely cold weather with ice and snow may lead to accidents such as line breakage.With the development of artificial intelligence technology,de-icing robots have become a reliable force to ensure the stable operation of power lines in extremely cold weather.In order to improve the de-icing efficiency,aimed at glaze-type icing with relatively high hardness,based on the conventional impact de-icing device of the de-icing robot,this paper proposes a design scheme of an eccentric de-icing hammer knocking device,which utilizes the vibration of the line to reduce the adhesion force of the icing.At the same time,this paper puts forward a vibration mathematical model of the knocking de-icing robot-overhead line,and analyzes the line galloping situation when the robot is de-icing and the relationship between the rotation speed of the de-icing hammer and the line displacement.For the icing of snowflake and glaze-type icing,the knocking de-icing robot is used for de-icing in the climate laboratory,and the vibration displacement characteristics of the middle part of the line during the de-icing work of the robot are obtained.In addition,the de-icing process is simulated through ANSYS simulation,and the experimental results are compared with the calculation results.The results show that the vibration displacement and frequency of the line increase with the increase of the rotation speed of the de-icing hammer of the robot and the thickness of the ice icing;the de-icing effect is the best when the robot uses the impact of the de-icing knife in cooperation with the striking and rotation of the de-icing hammer for deicing;in order to save energy,for the snowflake icing,the de-icing hammer can be used only for striking and rotating to shake it off.For the ice icing with a thickness of 0 mm~10 mm,only the impact of the de-icing knife can be used for removing it,and for the ice icing with a thickness exceeding 10 mm,the two methods need to be used in coordination for removal.
作者
李高嘉
王旭红
樊绍胜
邢朝慧
LI Gaojia;WANG Xuhong;FAN Shaosheng;XING Zhaohui(School of Electrical&Information Engineering,Changsha University of Science and Technology,Changsha 410114,China)
出处
《电力学报》
2025年第5期315-328,共14页
Journal of Electric Power
基金
国家自然科学基金(62473065)
湖南省自然科学基金(2023JJ50078)
长沙理工大学科研创新项目(CSL⁃GCX23063)。
关键词
配电网
敲击式除冰机器人
偏心除冰锤
冰雪极寒天气
振动特性
线路覆冰
ANSYS仿真平台
distribution network
knocking de-icing robot
knocking de-icing hammer
extreme cold weather with ice and snow
vibration characteristics
ice-covered lines
ANSYS simulation platform
