直流泄漏试验间隙屏蔽装置的研制与应用  

Development and Application of the Gap Shield of DC Leakage Test

作　　者：吴悦园 林丽霞 康钱江 李华轩 廖志峰 WU Yue-yuan;LIN Li-xia;KANG Qian-jiang;LI Hua-xuan;LIAO Zhi-feng(Zhanjiang Power Supply,Guangdong Electric Power Network Co.Ltd.,Zhanjiang 524005,China)

机构地区：[1]广东电网有限责任公司湛江供电局,广东湛江524005

出　　处：《电气开关》2025年第2期80-82,共3页Electric Switchgear

摘　　要：传统试验方法需要操作人员在高海拔反复拆卸安装变压器中性点避雷器放电间隙接地极,存在安全风险高、资源成本高等问题。因此,设计了一种新型直流泄漏试验间隙屏蔽装置,利用屏蔽间隙间的电场防止放电间隙击穿,从而顺利完成直流泄漏试验。该装置由高压绝缘套管模块、泄漏电流监测模块、连接固定模块三部分组成,操作人员可在地面操作伸缩绝缘杆便可安装间隙屏蔽装置,既能够彻底消除高空作业风险,还可以实时监测装置内部泄漏电流情况,确保了试验数据的准确性。经测试,实际应用效果良好。In the paper,design a new kind of DC Leakage test gas shield.Use electric field of the gap shield to prevent dischange gap breakdown,thus smoothly finishing DC leakage test.The device is made up of high voltage insulating bush module,leakage current check module and fixed connecting module.Operating staff can install the gas shield on the ground with an extension insulation bar,which not only completely cancel overhead job changer,but also can monitor in real-time device inner leakage current condition,ensuring the test data accuracy.By testing,actual use effect is better.

关 键 词：变压器 中性点避雷器 直流泄漏试验 间隙屏蔽装置 泄漏电流 

分 类 号：TM854[电气工程—高电压与绝缘技术]