鄱阳湖物理模型测控系统综合防雷设计与应用  

Comprehensive lightning protection design and application for Poyang Lake physical model measurement and control system

作　　者：万浩平 WAN Haoping(Jiangxi Academy of Water Science and Engineering,Nanchang 330029,China;Jiangxi Provincial Technology Innovation Center for Ecological Water Engineering in Poyang Lake Basin,Nanchang 330029,China)

机构地区：[1]江西省水利科学院防灾减灾与水工程安全研究所,江西南昌330029 [2]江西省鄱阳湖流域生态水利技术创新中心,江西南昌330029

出　　处：《水利信息化》2024年第5期82-87,共6页Water Resources Informatization

基　　金：江西省水利厅科技项目(201820YBKT13)。

摘　　要：针对室外大型河工物理模型测控系统可能遭受雷击损坏的问题,结合测控设备的具体布设位置,提出包含内部和外部防雷措施的系统综合防雷设计方案。以鄱阳湖物理模型测控系统为应用对象,内部防雷方面,针对测控中心电源、弱电信号等系统,提出具体的防雷措施;外部防雷方面,仿真分析直击雷击中室外就地监控箱避雷装置时,电流在电源线缆与接地系统的比例分配情况,设计监控终端设备数字水位仪、尾门控制器、湖区就地监控箱、摄像头等设备的防雷接地方案,以及整个测控系统的接地与屏蔽措施。综合防雷系统建成后,测控系统未遭受雷电袭击,系统防雷效果良好。综合防雷技术大大提高系统综合雷电防护能力,为模型试验的顺利开展提供很好的技术支撑,同时对后续开展系统雷电防护研究具有较好的借鉴意义。Addressing the potential issue of lightning damage to outdoor large-scale river engineering physical model measurement and control systems,and considering the specific layout of measurement and control equipment,a comprehensive lightning protection design scheme incorporating both internal and external lightning protection measures is proposed.Taking Poyang Lake physical model measurement and control system as the application subject,for internal lightning protection,specific protective measures are proposed for the power system and lowvoltage signal system of the measurement and control center.For external lightning protection,a simulation analysis of the proportionate distribution of current between power cables and grounding systems when direct lightning strikes outdoor local monitoring boxes equipped with lightning protection devices is conducted.Lightning protection grounding schemes are designed for monitoring terminal devices such as digital water level meters,tailgate controllers,local monitoring boxes in the lake area,cameras,and other equipment,along with grounding and shielding measures for the entire measurement and control system.After the implementation of the comprehensive lightning protection system,the measurement and control system were not subjected to lightning strikes,indicating good lightning protection effects.The comprehensive lightning protection technology significantly enhances the system's overall lightning protection capability,provides solid technical support for the smooth progress of model tests,and holds valuable reference significance for subsequent studies on system lightning protection.

关 键 词：测控系统 防雷 电源系统 信号系统 仿真 接地 屏蔽 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置] TM862[自动化与计算机技术—控制科学与工程]