20doi:10.3969/j.issn.1009-3230.2023.10.004应用能源技术2023年第10期（总第310期）660MW超超临界机组大容量旁路的应用研究郭旭超（陕西黄陵发电有限公司，陕西延安727307)摘要：本文围绕660MW超超临界机组大容量旁路（100%旁路设置）的应用进行了深入分析和探讨。超超临界机组因其高效、节能的特点，在现代电力系统中占据重要地位。然而，为了确保系统的灵活性和可靠性，在设计和运行过程中可引入100%大容量旁路系统。介绍了660MW超超临界机组设备设计特性，随后通过对比分析不同旁路设置方案的性能，重点研究了100%大容量旁路系统在超超临界机组中的应用效果和经济性。研究结果表明,100%大容量旁路设置能有效提高机组在负荷波动时的调节能力，保证了机组在各种工况下的稳定运行。此外，该旁路系统还能在机组启动和停机过程中,减少热应力，延长设备寿命。经济性分析进一步证实，尽管初期投资较高，但通过提高运行效率和降低维护成本，长期来看具有明显的经济效益。关键词：超超临界机组；大容量旁路；再热器；机组启动中图分类号：TM621ApplicationResearchonLargeCapacityBypassfor660MW(ShaanxiHuanglingPowerGenerationCo.,Ltd.,Yan'an727307,China)Abstract:Thispaperconductsacomprehensiveanalysisanddiscussionontheapplicationoflarge-capacitybypass(100%bypasssetting)for660MWultra-supercriticalunits.Ultra-supercriticalunits,characterizedbyhighefficiencyandenergy-savingfeatures,playacrucialroleinmodernpowersystems.However,toensuresystemflexibilityandreliability,a100%large-capacitybypasssystemcanbeintroducedduringthedesignandoperationprocesses.Thepaperintroducestheequipmentdesigncharacteristicsof660MWultra-supercriticalunitsandthenfocusesontheapplicationeffectsandeconomicfeasibilityofthe100%large-capacitybypasssystembycomparingandanalyzingdifferentbypasssettingschemes.Theresearchresultsindicatethata100%large-capacitybypasssettingcaneffectivelyenhancetheunit'sregulationcapabilityduringloadfluctuations,ensuringstableoperationundervariousconditions.Additionally,thisbypasssystemcanreducethermalstressduringunitstartupandshutdownprocesses,extendingequipmentlifespan.Economicanalysisfurtherconfirmsthatdespitethehigherinitialinvestment,thesignificantlong-terme...
