上汽超超临界汽轮机汽门快关控制逻辑优化  

Optimization on the Logic of Fast Valving System of Ultra-Supercritical Unit of Shanghai Turbine Company

作　　者：樊印龙[1] 张宝[1] 李蔚[2] 丁阳俊[1] 顾正皓[1] 

机构地区：[1]国网浙江省电力公司电力科学研究院,浙江杭州310014 [2]浙江大学热工与动力系统研究所,浙江杭州310027

出　　处：《中国电力》2017年第9期143-147,共5页Electric Power

摘　　要：为了保障电力系统稳定性,汽轮机组通常设置汽门快关系统,可有效避免机组在电网瞬时故障时跳闸,但国内出现多起因电网瞬时故障导致快关误动引起的机组跳闸事故。在介绍几起汽门快关误动事件基础上,以上汽660 MW超超临界机组为例,建立汽轮机组汽门快关仿真模型,分析汽门快关逻辑。为提高快关系统的可靠性,在原有的快关判断逻辑基础上增加快关延时和转速定量判断,进行优化逻辑仿真。仿真结果显示该优化措施在发挥汽门快关作用的同时避免了快关误动,确保了机组安全稳定运行。In order to guarantee the stability of the power system, fast valving is usually set up for turbine units, which can effectively avoid unit tripping during the transient fault of power grids. However, tripping accidents caused by the misoperation of the fast valving system during the transient fault of power grids have occurred in many units in recent years. In this paper, with the discussion of several such accidents and taking a 660 MW uhra-supercfitical unit made by Shanghai Turbine Company as an example the fast valving model is established and the fast valving logic is analyzed. To improve the reliabilities of the fast valving system, the time delay and the speed quantitation are added to the original logic judgment to carry out simulation for the logic optimization. The simulation results show that the optimization can make the fast valving system work better and avoid its malfunction at the same time, ensuring the safe operation of the units.

关 键 词：超超临界机组 汽轮机 汽门快关 快关延时 逻辑优化 

分 类 号：TM621[电气工程—电力系统及自动化]