摘要
目前,许多大功率机组不得不进行快速深度变负荷运行来缓解风电等新能源电力给电网带来的日益增大的调峰压力,机组调节系统的硬件性能面临极大的挑战,导致其故障率急剧增加。发现了一种顺序阀方式下由于调门硬件连接不紧密问题而导致的汽轮机负荷突变故障,并提出了一种基于高调门开关试验的机组负荷突变故障有效诊断方法:当机组实际运行发生故障时,可以快速对故障进行测试诊断,进而有效判断出故障的类别和原因。此外,还给出了典型的具有4个高调门的亚临界300MW机组实际负荷突变故障的诊断案例,突出了本方法的实际应用推广价值。
At present, many large power units have to operate in variable load condition with rapidity and depth in order to ease the growing peak regulation pressure of daily power grid caused by new energy power liking wind. The hardware of unit regulation system is facing huge challenges ,which make failure rate increase sharply. A turbine load mutation fault is found for the tight linking among hardware connection in sequence valve mode. Then an effective diagnosis method is proposed for load mutation fault on the base of the high-profile door switch tests. When faults occur in a running unit, the method can diagnosis rapidly to find the category and reason. In addition,we give a typical diagnosis case of subcritical 300 MW units with 4 high-profile to highlight the practice value of this method.
出处
《汽轮机技术》
北大核心
2015年第4期241-245,276,共6页
Turbine Technology
基金
哈尔滨市应用技术研究与开发攻关项目(2012DB2CP022)
国家重点基础研究发展计划(973)项目(2012CB215201)
关键词
汽轮机
高调门
硬件故障
负荷突变
开关试验
诊断测试
steam turbine
the high-profile
hardware failure
load mutation
switch experiment
diagnostic test
