中短波发射台站防雷接地装置电阻值智能检测研究  

Research on intelligent detection of resistance value of lightning protection grounding device in medium and short wave transmitting station

作　　者：冉亮[1] 许伟 曾祥平 何静[1] 李艳虹 RAN Liang;XU Wei;ZENG Xiangping;HE Jing;LI Yanhong(Chonqing Lightning Protection Center,Chongqing 401147,China;Chongqing University of Posts and Telecommunications,Chongqing 400065,China)

机构地区：[1]重庆市防雷中心,重庆401147 [2]重庆邮电大学,重庆400065

出　　处：《自动化与仪器仪表》2022年第5期218-222,共5页Automation & Instrumentation

基　　金：重庆市气象局2021年业务技术攻关项目,《重庆防雷装置智能在线监测技术研究与示范应用》(YWJSGG-202148)。

摘　　要：为避免中短波发射台站出现继电跳闸动作,从而使得接地装置可更好地抵御雷电波的侵入影响,针对中短波发射台站防雷接地装置电阻值智能检测方法展开研究。按照接地装置的频域响应能力,计算反击过电压的具体数值,再联合大量的电压与电流传输数据,建立等值化电路模型,完成中短波发射台站防雷接地装置的精确建模处理。在此基础上,提出耦合地线假设条件,通过约束电阻串片数值的方式,得到最终的智能耐电参量结果,实现电阻值智能检测方法的顺利应用。与ATP/EMTP程序支持下的电阻值检测手段相比,智能型检测方法可在继电跳闸电压高于360 V的情况下应用,且应用过程中能够有效阻止雷电波物理电流的上升变化趋势,不仅避免了中短波发射台站继电跳闸动作的出现,也可抵御雷电波对接地装置的侵入影响。In order to avoid relay tripping in medium and short wave transmitting stations,so that the grounding device can better resist the intrusion of thunder wave,the intelligent detection method for the resistance value of lightning protection grounding device of medium and short wave transmitting stations is studied.According to the frequency domain response capability of the grounding device,the specific value of the counter-attack overvoltage is calculated,and then a large amount of voltage and current transmission data are combined to establish an equivalent circuit model to complete the accurate modeling of the lightning protection grounding device of the medium and short wave transmitting station.On this basis,the hypothetical condition of the coupled ground wire is proposed,and the final intelligent resistance parameter result is obtained by restricting the value of the resistor string,and the smooth application of the intelligent detection method of the resistance value is realized.Compared with the resistance value detection method supported by the ATP/EMTP program,the intelligent detection method can be applied when the relay trip voltage is higher than 360V,and it can effectively prevent the rising trend of the lightning wave physical current during the application process.It avoids the occurrence of relay tripping actions of medium and short wave transmitting stations,and can also resist the intrusion of lightning waves on the grounding device.

关 键 词：中短波发射台站 防雷接地装置 电阻值检测 频域响应 耦合地线 

分 类 号：TP206[自动化与计算机技术—检测技术与自动化装置]