GAO Chunyu, ZHOU Qian, YANG Shang. Analysis and optimization of RB control strategy for a sub-critical 300MW unit[J]. Thermal power generation, 2013, 42(9): 121-124.
GAO Chunyu, ZHOU Qian, YANG Shang. Analysis and optimization of RB control strategy for a sub-critical 300MW unit[J]. Thermal power generation, 2013, 42(9): 121-124.DOI:
亚临界300MW机组RB控制策略优化
摘要
以某300MW机组为例
在分析机组原辅机故障减负荷(RB)控制策略的基础上
对100%汽动给水泵RB时联锁启动电动给水泵、送/引风机RB等控制逻辑进行了优化
如在RB工况时根据总燃料量设定总风量
在一次风机RB控制逻辑中设计一次风动叶超驰开和炉膛压力优降回路等。试验结果表明
该方案使机组能够在RB时稳定、快速地减负荷。
Abstract
The original run back(RB)control strategy of a 300MW unit was analyzed.On this basis
the logic of interlock start motor driven feed water pump during RB control of the 100%steam driven feed water pump was optimized.Moreover
optimization on RB control logic of the forced draft fan and induced draft fan were also performed
such as setting the gross input air volume according to the total fuel amount under the RB condition
designing the primary air fan override open and furnace press priority low circuit in primary air fan RB control logic.The results showed that
the optimized unit can lower the load steadily and promptly during RB.