GIS智能控制柜温度均衡及电磁屏蔽技术研究

耿飞 刘露旋 戴本圣

摘要：用于气体绝缘金属封闭开关设备（Gas-insulated metal-enclosed switchgear，GIS）的智能控制柜内通常安装有智能终端、合并单元、测控装置、交换机等多种智能电子设备，如何保障这些智能电子设备的正常运行对于GIS设备乃至整个变电站的正常运行具有重要意义。现有GIS智能控制柜一般可以实现IP55的防尘、防水性能，但在柜内温湿度控制性能及电磁屏蔽性能方面还存在不足，需要研究改进。本研究分析了现有GIS智能控制柜低温环境下柜内温差较大的原因，研究了智能控制柜温度均衡关键技术；分析了现有智能控制柜电磁屏蔽性能不良的原因，研究了智能控制柜电磁屏蔽效能提升关键技术；研制了双舱结构GIS智能控制柜样机，并进行了高低温试验和电磁屏蔽效能实验。实验结果表明：智能控制柜温度均衡关键技术和电磁屏蔽关键技术效果良好，可以推广使用。

关键词：智能控制柜；温度均衡技术；电磁屏蔽技术

中图分类号：TN03文献标识码：A文章编号：1003-5168（2021）35-0036-04

Research on Temperature Equalization and Electromagnetic Shielding Technology of GIS Intelligent Control Cabinet

GENG FeiLIU LuxuanDAI Bensheng（Henan Pingzhi High-Voltage Switchgear Co.， Ltd.， Pingdingshan Henan 467000）

Abstract： Intelligent control cabinets for gas-insulated metal-enclosed switchgear （GIS） are usually equipped with switchgear controller， merging units， measurement and control devices， switches and other intelligent electronic equipment. How to ensure the normal operation of these intelligent electronic devices is of great significance to the normal operation of GIS equipment and even the entire substation. The existing GIS intelligent control cabinet can generally achieve IP55 dustproof and waterproof performance， but there are still shortcomings in the temperature and humidity control performance and electromagnetic shielding performance in the cabinet， and research and improve？ ment are needed. The reasons for the large temperature difference in the GIS intelligent control cabinet under the low temperature environment are analyzed. The key technologies of temperature equilibrium in intelligent control cabinet are researched. The reasons for the poor electromagnetic shielding performance of intelligent control cabinet are ana？ lyzed. The key technologies to promote intelligent control cabinet electromagnetic shielding effectiveness are re？ searched. Developed a dual-cabin structure of GIS intelligent control cabinet prototype， and carried out high and low temperature test and electromagnetic shielding effectiveness experiment. The experimental results show that the key technologies of temperature equilibrium and the key technologies of electromagnetic shielding are effective and can be widely used.

Keywords： intelligent control cabinet；temperature equalization technology；electromagnetic shielding technology

智能控制柜（匯控柜）是智能变电站功能实现的关键设备之一，对现场环境条件、电磁环境的耐受能力会直接影响智能变电站的安全运行。《智能变电站智能控制柜技术规范》（Q/GDW 1430—2015）增加了智能控制柜温湿度调节性能和电磁屏蔽效能的要求。关于温湿度调节性能，规范要求智能控制柜内上部、中部、下部温度差值不大于10℃；关于电磁屏蔽效能，规范要求其符合《电子设备机械结构公制系列和英制系列的试验第3部分：机柜、机架和插箱的电磁屏蔽性能试验》（GB/T 18663.3—2007）的1级要求[1]。……