地线电磁脉冲除冰系统的振动加速度试验研究  

Vibration Acceleration Experiments of Ground Wire Deicing System With Electromagnetic Pulses

作　　者：胡琴[1] 姜涛 蒋兴良[1] 舒立春[1] 陈宇 李超 HU Qin;JIANG Tao;JIANG Xingliang;SHU Lichun;CHEN Yu;LI Chao(State Key Laboratory of Power Transmission Equipment&System Security and New Technology(Chongqing University),Shapingba District,Chongqing 400044,China)

机构地区：[1]输配电装备及系统安全与新技术国家重点实验室(重庆大学),重庆市沙坪坝区400044

出　　处：《电网技术》2022年第11期4541-4547,共7页Power System Technology

基　　金：南方电网有限责任公司防冰减灾重点实验室支撑项目(GZKJXM20190748)。

摘　　要：架空地线短路融冰技术操作复杂、成本较高且难以实现。该文在分析电磁脉冲除冰原理的基础上,研制了一种可产生高幅值、短时间电脉冲力,使地线上冰层破裂脱落的电磁脉冲除冰系统,同时,以地线振动的峰值加速度作为系统脉冲除冰效果的评价指标。通过在人工气候室搭建短尺寸地线试验平台,测量不同脉冲电压、线圈匝数、倍增器厚度下未覆冰地线不同位置处振动峰值加速度,分析其变化规律,得到最优的除冰系统参数,并在此最优参数配置下进行除冰试验。试验结果表明:地线未覆冰时,峰值加速度随脉冲电压、倍增器厚度及线圈匝数的增加逐渐增加,随离除冰装置距离的增加,峰值加速度增加速度变缓。地线覆冰时,在线圈为60匝,倍增器厚度为5mm,脉冲电压为1300V的条件下进行脉冲除冰试验,地线除冰长度为2.86m,除冰率为90%。It is difficult to realize the short-circuit ice melting of the overhead ground wires because it is complex in operation and high in cost. In this paper, by analyzing the principle of electromagnetic pulse deicing, an electromagnetic pulse deicing system is developed, which is able to produce high amplitudes and short time electric pulse forces to break off the ice on the ground wires. At the same time, the peak acceleration of ground wire vibration is used as the evaluation index of pulse deicing effect of the system. By building a short-lengthed ground wire test platform in the artificial climate chamber, the vibration peak accelerations at different positions of the uniced ground wire under different pulse voltages, coil turns and multiplier thicknesses are measured, analyzing the changing law, obtaining the optimal deicing system parameters, and carrying out the deicing test under the optimal parameter configuration. The test results show: When the ground wire is not covered with ice, the peak acceleration increases with the increase of the pulse voltage, the multiplier thickness and the number of coil turns, while it slows down with the increase of distance from the deicing device. When the ground wire is covered with ice, the pulse deicing test is carried out under the condition that the coil is 60 turns, the thickness of the multiplier is 5 mm and the pulse voltage is 1300 V. In this case, the deicing length of the ground wire is 2.86m and the deicing rate is 90%.

关 键 词：电磁脉冲 地线除冰 脉冲效果 峰值加速度 变化规律 

分 类 号：TM721[电气工程—电力系统及自动化]