220 kV升压站SF6断路器改造和应用
2016-01-25姚舜
姚 舜
(广州珠江电厂 检修中心,广东广州511400)
220 kV升压站SF6断路器改造和应用
姚舜
(广州珠江电厂 检修中心,广东广州511400)
摘要:广州珠江电厂220 kV升压站SF6断路器为瑞士ABB公司ELFSP4-1型产品换型改造的杭州西门子高压开关有限公司生产的户外、防污型三相机械联动型或三相电气联动型产品。从主变出口断路器、线路出口断路器、母联分段断路器和启动/备用变出口断路器四类不同断路器分别描述了断路器改造后的功能和现场应用情况,最后就改造和运行中发现和存在的问题进行了简要说明,并提出了今后维护运行中的注意事项。新改造的西门子公司SF6断路器现场运行良好。
关键词:SF6断路器;西门子;三相机械联动;三相电气联动
中图分类号:TM621.3
文献标识码:A
DOI:10.3969/j.issn.1672-0792.2015.03.014
收稿日期:2014-11-13。
作者简介:姚舜(1981-),男,高级工程师,从事发电厂继电保护工作,E-mail:15302530@qq.com。
Abstract:Previously the SF6circuit breakers of ELFSP4-1 type were applied to 220 kV substation in Guangzhou Zhujiang Power Plant, which were imported from the Swiss ABB Company. Now, they are replaced by outdoor, antifouling three-phase mechanical linkage or three-phase electrical linkage SF6circuit breakers which are produced by the Siemens high voltage switch Co. Ltd. in Hangzhou. The breaker’s functions and application after transformation are described in detail from four kinds of circuit breaker, i.e.,the main transformer circuit breaker, the line circuit breaker, the contact circuit breaker and start / spare transformer circuit breaker. Finally, the discovery and the existing problems in the reform and operation are explained briefly. And some matters needing attention in the future are put forward in the operation and maintenance. The SF6circuit breakers are running well in field.
Keywords:SF6circuit breaker; Siemens; three-phase mechanical linkage; three-phase electric linkage

0引言
广州珠江电厂220 kV升压站SF6断路器为瑞士ABB公司ELFSP4-1型产品,从安装投运至今已运行二十年,已达到该设备使用寿命年限的要求,超过了ABB公司对该设备的保障安全年限,且断路器存在合分闸线圈老化、微水试验不合格、SF6气体泄漏[1]、液压储能机构频繁打压[2~7]等现象。为保证系统电网稳定和广州珠江电厂220 kV升压站设备运行安全,需要对该SF6断路器进行换型改造[8~12]。
1断路器功能和现场使用
新改造断路器均为西门子高压开关有限公司(杭州)生产,采用户外、防污型、弹簧操动机构。其中1号~4号机组主变出口断路器(2201,2202,2203,2204)为三相机械联动3AP1 FG-252 kV型,共4组。线路出口断……
