江苏电网220千伏三兴输变电工程可行性研究 摘要 随着张家港北部地区的经济发展,现有电网的供电能力已经不能满足当地用户的 用电要求,急需增加新的变电所,此外,目前该地区电网还存在重复变压等问题,也 需要借助新变电所的建设对现有电网进行梳理,220kV三兴输变电工程可行性研究工 作在此背景下展开 根据江苏省电力公司批复,三兴变初步设定了电压等级!主变远景设计规模及本 期规模 本文依据相关标准对系统一次!继电保护!系统通信及系统远动进行了详细的论 证,明确了配置原则 本可行性研究重点突出了变电所选址及进出线路径的确定经过现场勘查和测 算,本文对三个满足基本条件的变电所所址进行多方面论证,最终根据经济最优原则 选出了推荐所址在此基础上,本文对东西两侧的开环路径进行了探讨,并给出了出 线方案 最后,笔者对工程做了详细的项目概算,并进行了社会和经济效益评估 关键词:可行性研究,建设规模,所址选择,路径选择,投资估算 I 乡Abstr朗t江苏电网220千伏三兴输变电工程可行性研究 AbstraCt AstheraPidlydeveloPingofNorthP斌ofZhangJiagang,PowersuPPlyabilityof c叮entPowergriddailydroPsbehindthedemandofeeonomy.Ontheotherhand,Power gridofthisareaalsosufferstheabuseofreduPlieatePowertransforming.Invirtueofthe eonstruetionof220kVSanxingsubstation,weeansolveallthementionedProblemsabove. AeeordingtothesanetionofJiangsuEleet户ePowerComPany,wefixthevoltage gradeofSanxingsubstation,aswellasthefinalsealeandeurrenisealeofdesigned substation. 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Keywords:feasibilitystudy:eonstruetionseale:substationaddressing:routeseleetion: investmentestimations目录江苏电网220千伏三兴输变电工程可行性研究 目录 摘要........................................................................................................I Abstract..../...........................................0......................................11 1总论.......,.......................................................,.........................1 1.1选题来源与工程概述........................................1 1.2设计与研究依据...................................................................#l 1.3设计范围..........................................................................................................l 2建设必要性.0.........//0/.0/........................2 2.1张家港电网现状..................................................................2 2.2建设的必要性.......................................................................,..2 3系统方案.,0.0二0.0,/.,00.00.0.0/............................#......#..#..4 3.1系统一次.......................................................................,............................4 3.1.1建设规模....................................................................,....................4 3.1.2变电所在系统中的作用及地位...........................................................5 3.1.3电气主接线要求...................................................................................5 3.1.4主变选型...............................................................................................5 3.1.5母线穿越功率要求...............................................................................5 3.1.6无功补偿...............................................................................................5 3.2系统继电保护..................................................................................................5 3.2.1一次系统简介.......................................................................................5 3.2.2配置及选型方案...................................................................................5 3.2.3其它.......................................................................................................6 3.3系统远动..............................................................................................,......6 3.3.1本期工程远动设计...............................................................................6 3.3.2远动通道要求.......................................................................................7 3.4系统通信..........................................................................................................7 3.4.1相关通信网现状...................................................................................7 3.4.2配置原则...............................................................................................7 3.4.3调度关系及信息通道需求...................................................................7 3.4.4保护通道组织方案....................#8 3.4.5通信接入系统方案.................................8 3.4.6系统通信设备配置表...........................................................................9 川 3江苏电网220千伏三兴输变电T程可行性研究 4变电所所址选择和工程设想,/./..,/:./.......0,0,//二0二0.,0.10 4.1所址选择...............................................................-..................................10 4.1.1选所经过.............................................................................................10 4.1.2所址技术条件............................................,..................................11 4.1.3主变压器运输.....................................................................................18 4.1.3进所道路及站区上下水.....................................................................20 4.1.4经济性评估................................................,..................................22 4.1.5结论.....................................................................................................23 4.2工程设想........................................................................................................24 4.2.1本期及规划规模.................................................................................24 4.2.2拟定站址及环境障碍清除........................,..................................24 4.2.3电气主接线及主要设备选型.............................................................24 4.2.4总平面及竖向布置.............................................................................24 4.2.5电气二次线(见附图6)..................................................................25 4.2.6建构筑物及结构设想................................,..................................28 4.2.7环境保护.............................................................................................29 5线路路径选择和工程设想...........0/,0../,0.0二0.0,30 5.1线路路径选择................................................................................................30 5.1.1线路概况..............................-..........,................................30 5.1.2变电所及开环点情况.........................................................................30 5.1.3影响路径方案的因素.........................................................................30 5.1.4路径方案.............................................................................................30 5.1.5路径协议情况....................................,..........................................31 5.2线路部分主要工程设想................................................................................31 5.2.1工程规模.............................................................................................31 5.2.2气象条件.............................................................................................31 5.2.3沿线污秽等级.....................................................................................32 5.2.4导!地线选型.....................................................................................32 5.2.5杆塔及基础型式.................................................................................32 5.3主要路径障碍及处理措施............................................................................37 6工程投资估算../../0/../..00,./二0:.00...,000.00////0./.0./././.,.38 6.1项目概况........................................................................................................38 6.2编制原则和依据:........................................................................................38 6.2.1编制依据.............................................................................................38 lV江苏电网220千伏三兴输变电T一程可行性研究 6.2.2机电设备价格和材料价格.................................................................38 6.2.3其他费用.................,.....................................................................38 6.3主要技术经济指标(见表6一1)..................................................................40 6.4220kV三兴变电所总概算表(见表6一2)...................................................41 6.5送电线路工程投资估算(见表6一3)..........................................................44 7社会和经济效益分析,/.....................................................................48 8结论.......................................0,0..0.........................................49 致谢.......0...............0./000................................................56