河津电厂2×350MW机组FCB性能试验分析

sting and analysis of fast cut back (FCB) performance of 2x350 MW generating units in Hejin Power Plant

机组快速甩负荷(FCB)是分散控制系统(DCS)在机组正常运行中,发电机解列时的一种重要保护功能,它可间接考核锅炉燃烧特性及汽轮机调节系统动态特性,作为新机组验收试验的手段之一,有极广泛的应用价值。河津电厂1、2号机组FCB性能试验在山西省尚属首次。通过本次试验,摸索出在FCB试验过程中机组的运行经验。文中详细介绍FCB试验过程中的动作情况,分析总结FCB过程对机组的影响及试验注意事项。

<abstract>st cut back (FCB) is an important protective function of DCS system when the generator is tripped off during the normal operation of unit. It can indirectly examine the combustion characteristics of boiler and the dynamic characteristics of turbine governing system, which can be widely used as a way of acceptance test for new unit. It was the first time in Shanxi Province to carry out the FCB test on No. 1 and No.2 units of Hejin Power Plant. Through this time test, the operation experience of unit during the test of FCB was found out. This paper details the actuating conditions of FCB during test, analyzes and sums up the impact of FCB process on the unit and the matters needing attention during the test.