凌杰
【摘 要】秦二廠1/2號機組在正常運行時,由發電機經廠變向廠內的設備供電,輔變處于熱備用狀態,當主電網或者廠內的變壓器(主變、廠變)故障時,則四條廠用6.0kV母線將會自動切向輔變供電,機組進入事故規程。在核電廠技術規格書中僅對兩臺輔變不可用做出明確的規定,并未對單臺輔變的不可用做出明確的規定,本論文詳細分析當機組出現主變向輔變切換的情況下,單臺輔變運行將會做機組產生的影響。
【關鍵字】單臺輔變;容量;事故;技術規格書
中圖分類號: TM623 文獻標識碼: A 文章編號: 2095-2457(2018)04-0146-001
Single auxiliary operation of the crew on the impact
Ling Jie
(Nuclear Nuclear Power Operations Management Co.,Ltd.,Jiaxing,Zhejiang 314300,China)
【Abstract】During the normal operation of No.1/2 plant of Qin Plant,the power supply in the plant is changed from generator to plant. The auxiliary transformer is in hot stand-by state.When the main power grid or the transformer (main transformer, factory transformer) Failure, then the four plants with 6.0kV bus will be automatically tangential auxiliary power supply, the crew into the accident rules. In the technical specification of nuclear power plant, only two sets of auxiliary variable are not available to make a clear provision, not a single auxiliary variable is not available to make a clear provision, the paper detailed analysis of the main unit when the auxiliary transformer switch The case of a single auxiliary operation will be the impact of generating units.
【Key words】Single auxiliary change; Capacity; Accident; Technical specifications
秦二廠1/2機組在正常滿功率運行時,由發電機經廠變向廠內的設備供電,當主電網故障或廠內的變壓器(主變、廠變)故障時,則四條廠用6.0kV母線將會自動切向輔變供電,機組進入事故規程。
在核電廠技術規格書中對輔變的可用性有著明確的要求:當僅廠外輔助電源不可運行則必須在36小時內修復,并且補充要求:假如廠區內附加柴油機可運行則退防時限延長至7天,否則機組退防到RRA投入的雙相中間停堆狀態。技術規格書中僅對兩臺輔變不可用做出明確的規定,并未對單臺輔變的不可用做出明確的規定。所以說,現在單臺輔變的檢修等原因造成的不可用并不能劃入廠外輔助電源不可運行這一條,而且在技術規格書中也找不到相應的規定。輔助電源系統在正常運行時,有兩條6.0kV母線分別向1、2號機組的四條6.0kV母線供電,并且各自帶一臺升壓變壓器供給25MW的電鍋爐,兩條母線之間設有母聯開關?!?br>