具备SF_(6)泄漏预警功能的SF_(6)数字密度继电器设计  

Design of a Digital Protective Relay of SF_(6) Density with Leakage Alarm Function

作　　者：黄珠羡 朱榜超 HUANG Zhuxian;ZHU Bangchao(Guangxi Power Grid Corporation Baise Power Bureau,Baise 533000,China)

机构地区：[1]广西电网有限责任公司百色供电局,广西百色533000

出　　处：《电工技术》2024年第5期137-140,共4页Electric Engineering

基　　金：广西电网公司科技项目资助(编号041300KK5222-0002)。

摘　　要：SF_(6)气体的绝缘性能和灭弧性能取决于SF_(6)气体的密度。SF_(6)泄漏不仅会导致SF_(6)气体密度值下降,还会带来其他危害。现有SF_(6)气体密度检测主要使用机械式SF_(6)数字密度继电器,但机械式SF_(6)密度继电器存在许多不足之处,如读数不准确、报警功能滞后等。针对机械式SF_(6)密度继电器的缺点,设计了一种SF_(6)数字密度继电器,可实现SF_(6)气体密度在线监测,并提出了SF_(6)泄漏判别算法,可实现SF_(6)泄漏预警功能,避免由于SF_(6)泄漏发现不及时导致的电网安全事故发生。The insulation and arc quenching properties of SF_(6) gas depend on its density.SF_(6) leakage brings about not only decrease of SF_(6) gas density but also other hazards.At present,SF_(6) gas density detection mainly relies on mechanical relays which have many shortco mings,such as inaccurate reading,untimely alarm and so on.min In view of these shortco mings,this paper designs a digital relay of SF_(6) density capable of achieving on-line monitoring of SF_(6) gas density.The SF_(6) leakage min deter mination algorithm is proposed,which can realize SF_(6) leakage alarm function and facilitate avoiding grid accidents due to untimely discovery of SF_(6) leakage.

关 键 词：SF_(6)泄漏 数字密度继电器 泄漏判别 

分 类 号：TM58[电气工程—电器]