人民长江
人民長江
인민장강
YANGTZE RIVER
2014年
17期
52-53,88
,共3页
纯机械过速保护%飞逸事故%铜街子水电站
純機械過速保護%飛逸事故%銅街子水電站
순궤계과속보호%비일사고%동가자수전참
purely mechanical over-speed protection%runaway accident%Tongjiezi Hydropower Station
铜街子水电站2号机组原有过速保护系统已运行多年，存在影响机组安全运行的隐患。为杜绝飞逸事故的发生，提高过速保护动作的可靠性，在2012~2013年度检修中，对2号机组的纯机械保护系统进行了改造。在原有纯机械过速保护系统的基础上新增加了一套纯机械过速保护装置，同时改造了原有的液压控制回路。改造后2套纯机械过速保护装置关联运行，可有效提高机组的安全性。详细介绍了改造过程，可供同类工程参考。
銅街子水電站2號機組原有過速保護繫統已運行多年，存在影響機組安全運行的隱患。為杜絕飛逸事故的髮生，提高過速保護動作的可靠性，在2012~2013年度檢脩中，對2號機組的純機械保護繫統進行瞭改造。在原有純機械過速保護繫統的基礎上新增加瞭一套純機械過速保護裝置，同時改造瞭原有的液壓控製迴路。改造後2套純機械過速保護裝置關聯運行，可有效提高機組的安全性。詳細介紹瞭改造過程，可供同類工程參攷。
동가자수전참2호궤조원유과속보호계통이운행다년，존재영향궤조안전운행적은환。위두절비일사고적발생，제고과속보호동작적가고성，재2012~2013년도검수중，대2호궤조적순궤계보호계통진행료개조。재원유순궤계과속보호계통적기출상신증가료일투순궤계과속보호장치，동시개조료원유적액압공제회로。개조후2투순궤계과속보호장치관련운행，가유효제고궤조적안전성。상세개소료개조과정，가공동류공정삼고。
The original over -speed protection system of No. 2 unit of Tongjiezi Hydropower Station has been operated for years, so there are hidden dangers that may affect the safe operation of the units. In order to avoid runaway accident and improve the reliability of over-speed protection system, the purely mechanical over-speed protection system of No. 2 unit was reformed during the maintenance of 2012 to 2013. A set of purely mechanical over-speed protection device was added to the original sys-tem and the original hydraulic control circuit was reformed as well. The two purely mechanical over-speed devices were parallel-ly connected after reformation, which could improve the safety of the units. The reformation process was introduced in detail.
