| 引用本文: | 周 蠡,鲁铁成,罗容波,张 博,万家伟,余光凯,胡泰山.基于千安级冲击电流的回路电阻测量系统[J].电力自动化设备,2015,35(1): |
| ZHOU Li,LU Tiecheng,LUO Rongbo,ZHANG Bo,WAN Jiawei,YU Guangkai,HU Taishan.Loop resistance measuring system based on kA-level impact current[J].Electric Power Automation Equipment,2015,35(1): |
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| 摘要: |
| 精确测量气体绝缘组合电器（GIS）触头的回路电阻，有利于降低GIS故障的发生概率，因此提出了一种基于千安级冲击电流的回路电阻测量系统。该系统的硬件主要由工控机、充电模块、主放电回路、电压隔离传感器以及数字信号处理模块构成，给出了系统的软件流程图。某500 kV变电站内GIS设备的现场试验表明，该系统能够在现场产生千安级的冲击电流，与常规直流回路电阻测试仪相比，其灵敏度和测量精度更高。 |
| 关键词: 千安级冲击电流 超级电容器 GIS 导电连接件 测量 回路电阻 |
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| Loop resistance measuring system based on kA-level impact current |
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ZHOU Li1, LU Tiecheng1, LUO Rongbo2, ZHANG Bo1, WAN Jiawei1, YU Guangkai1, HU Taishan1
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1.School of Electrical Engineering，Wuhan University，Wuhan 430072，China;2.Foshan Power Supply Bureau，Guangdong Power Grid Corporation，Foshan 528000，China
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| Abstract: |
| Since the accurate loop resistance measuring of GIS（Gas Insulated Switchgear） contacts is helpful to reduce GIS failure probability，a loop resistance measuring system based on kA-level impact current is proposed. Its hardware consists of IPC（Industrial Personal Computer），charging module，main discharging circuit，voltage sensor and digital signal processor. The flowchart of its software is given. The field tests for the GIS equipments of a 500 kV substation show that，the system can generate kA-level impact current on field and its sensitivity and accuracy are higher than those of traditional DC loop resistance tester. |
| Key words: kA-level impact current super-capacitor gas insulated switchgear contactor measurements loop resistance |
