600MW空冷机组夏季优化运行试验与分析.pdfVIP

内蒙 古 电力技 术 NER M0NGOL1A E1ECTRIC 103 2012年第3O卷第 1j9J IN 600MW空冷机组夏季优化运行试验与分析 孔昭文，焦晓峰，樊泽国，李文艳，张锋锋 (内蒙古电力科学研究院，内蒙古 呼和浩特 010020) 摘要：介绍了某600MW超临界直接空冷机组夏季优化运行试验项 目、方法及步骤，通过 试验获得了负荷、背压、环境温度、风机转速、机组热耗、供电煤耗等参数关系及机组低负荷下 的滑压运行曲线。对试验结果进行了分析，认为机组负荷在500MW 以上时，空冷风机超频 运行机组背压会有较大幅度的下降；在设计背压附近运行时，提高空冷风机运行频率对机组 背压的影响很小而风机功耗却较大幅度地增加 ；低负荷滑压运行时，2阀全开比3阀运行的经 济性会有较大幅度提高。给出了直接空冷机组夏季运行的注意事项及建议。 关键词：600MW超临界机组；直接空冷；热耗率；煤耗率；滑压运行；优化运行 文献标志码 ：B 文章编号：1008—6218(2012)01—0103一O4 AnalysisofTesting on SummerOptimization Operation of600MW AirCooled PowerUnit KongZhaowen，JiaoXiaofeng，FanZeguo，LiWenyan，ZhangFengfeng (InnerMongoliaElectricPowerScience ResearchInstitute．InnerMongolia Hohhot 010020) Abstract：It is introduced thatoperation items，methodsand procedure in optimization operation in summer on one certain 600 MW supercritical directair cooled power unit． Through testing，some parameters and itsrelationship，such asload，backpressure，ambient temperature，fan turn speed，heatconsumption ofunit，coalconsumption，aswellas sliding pressure operation curve under low load ofunit，are obtained．Analysisto testing results showswhen unitoperates in more than 500MW operation load，backpressure ofunitwill be relatively substantially drop with air cooled fan oveffrequency operation；when unit operatesadjacenttodesignedbackpressure，itinfluencesmorelessonbackpressureofunit underoveffrequency operation ofaircooled fan，butpowerconsumption ofairfan willbe sharply increased．Under slide pressure operation with low loads，economicalefficiencywill be tremendously improved underoperation with