第页某110kV电力系统继电保护设计摘要：本次毕业设计的主要内容是110kV电力系统继电保护的配置，并依据继电保护配置原理，对所选择的保护进行整定和灵敏性校验，确定方案中的保护。设计分为八个章节，第三、四章是计算系统的短路电流，确定运行方式；第五章是各种设备的保护配置。其中变压器保护包括保护原理分析、保护整定计算和灵敏性校验，主保护采用的是纵联差动保护和瓦斯保护，两者结合做到优势互补，后备保护是复合电压启动过电流保护。母线保护包括保护原理分析，采用了完全电流差动保护，简单可靠。110kV侧的输电线路采用了距离Ⅰ、Ⅲ保护，由于它的电压等级较高，还考虑了零序电流Ⅰ、Ⅲ保护。对于发电机主保护采用了纵差动保护，后备保护采用了发电机定子绕组接地保护。关键词：短路电流，整定计算，灵敏度，继电保护，微机保护Abstract:Thistimegraduationdesignofthemaincontentsbethe110kVelectricpowersystemafterrelayprotectionofscheme,andaccordingasrelayprotectionschemeprinciple，Tochoiceofprotectioncarryoncompletecalculatewiththedelicateextentcheckout,toassuranceprojectinofprotection.Thedesignisdividedintoeightchapter,chapter3and4iscalculationsystemofshortcircuitelectriccurrent,assurancecirculateaway;Chapter5isprotectionschemewhichisvariousequipments.Amongthemtransformerprotectionincludeprotectionprincipleanalysis,protectioncompletecalculateanddelicateextentcheckout,centralprotectionislengthwaysassociateddifferentialprotectionandgasprotection,bothcombinetoattainadvantagetowitheachotherrepair,spareprotectioniscompoundelectricvoltagestartconductelectricitytoflowprotection.generatrixlineprotectionincludeprotectionprincipleanalysis,adoptioncompletedifferentialelectriccurrentprotection,simplecredibility.Thepowerlineofthe110kVadoptedistanceⅠ,Ⅲprotection,becauseofitoftheelectricvoltagegradebehigher,alsoconsiderationzeroprefaceelectriccurrentⅠ,Ⅲprotection.Forgeneratorcentralprotectionadoptelengthwaysassociateddifferentialprotection,spareprotectionadoptegeneratorstatorconnectgroundprotection.Keywords:Shortcircuitelectriccurrent,completecalculation,delicateextent,relayprotection,microcomputerprotection目录TOC\o"1-3"\h\z\uHYPERLINK\l"_Toc200558706"1前言PAGEREF_Toc200558706\h1HYPERLINK\l"_Toc200558707"2方案比较PAGEREF_Toc200558707\h2HYPERLINK\l"_Toc200558708"3确定运行方式PAGEREF_Toc200558708\h4HYPERLINK\l"_Toc200558709"3.1标幺值计算PAGEREF_Toc200558709\h4HYPERLINK\l"_Toc200558710"3.2短路电流的计算PAGEREF_Toc200558710\h5H