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a7、aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaahF-1-1.工程概述1.1 工程概述1.1.1 110kV 商业中心变电工程本所址位于冷水滩城市中心区冷水滩面粉厂内，珊瑚东路以南 33米、零陵北路以北约 350 米处，处于负荷中心。变电站参照国家电网公司输变电工程典型设计 110kV 变电站分册（湖南电力公司实施方案）的 B-3 方案设计,10kV 出线全部采用电缆。变电站 110kV 配电8、装置采用 GIS 设备，扩大内桥接线方案，所有110kV 配电装置本期全部上齐。110kV 出线终期 2 回，本期 2 回接曲珍线。主变压器本期1台,容量为50000kVA，终期3台，容量3X50000kVA；10kV 出线本期 12 回，终期 36 回。10kV 配电装置采用户内中置式开关柜,本期采用单母线接线，终期采用单母线断路器四分段，本期不上分段开关，只上一面隔离柜。本变电站的建设方案与永州电网“十一五”规划和 2020 年远景目标网架展望（以下简称十一五规划）有一定的偏差：十一五规划中，商业中心变的 110kV 线路共有两回，分别至冷水滩北 220kV 变和 T 接冷水滩北 220k9、V 变至曲河 220kV 变的 110kV 联络线上；本期商业中心变的接入系统方案为，接曲河变到珍珠塘变的 110kV 线路，在冷水滩北 220kV 变建成后，将商业中心变到珍珠塘变的 110kV 线路剖进冷水滩北 220kV 变，由冷水滩北 220kV 变带珍珠塘和商业中心变的负荷。1.1.2 110kV 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aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaahF-2-本工程为曲珍16、线剖进冷水滩商业中心变工程。线路采用双回路共塔架设，本工程一次性架设完成。本线路起自曲珍线 N28-N29 号杆之间，止于商业中心变 110kV 龙门架，线路全长 23.6km。导线采用 LGJ-300/25 型钢芯铝铰线，地线采用 XGJ-50（17-8.7-1270-B）型锌铝稀土合金镀层钢绞线，地线逐基直接接地。1.1.3 10kV 配电线路10kV 出线终期 36 回，本期出线 12 回。采用电缆出线。10kV 出线列入永州市城区中低压配电网规划。1.1.4 工程建设时序及投资估算110kV 商业中心输变电工程为特事特办项目（发展200750 号文）已于 2007 年 7 月开工，预计17、于 2008 年 6 月建成投产，工程总投资约为 3777.923777.92 万元。1.2 编制范围110kV 商业中心输变电工程包含如下子项目：序号分类项目名称1变电部分110kV 商业中心变电所工程2线路部分110kV 商业中心变接曲珍线3光纤配套架设曲河变到商业中心变到珍珠塘变的 24芯 ADSS 光缆及相关配套设备上述项目的费用均列入本工程。Selection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.Paragraaaaa18、aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphForm Selection.ParagraphFormaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselect19、ion.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2Selection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Sele20、ction.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphF aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaahFSelection.ParagraphFormat.LineSpacingLinesToPoints(2)Select21、ion.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphForm Selection.ParagraphFormaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesTo22、Points(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2Selection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLines23、ToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphF aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa24、aaahF-3-1.3 设计水平年鉴于冷水滩商业中心 110kV 变电站 2008 年 6 月投产运行,根据永州电网规划,选择 2008 年作为冷水滩商业中心 110kV 变电工程接入系统设计水平年。2.工程建设必要性2.1 电力系统概况永州冷水滩区城市 110110kV 高压配电网目前是曲河横冲白竹亭下河线竹塘曲河单环网结构，该环网负荷已经达到 80MW 以上。由于短线路多，保护配合比较困难，正常运行方式时只能开环运行，供电可靠性低。2007 年珍珠塘变电站建成投产后,将形成曲河珍珠塘横冲曲河环网,使冷水滩城区西北部电网结构得到加强。冷水滩商业中心及其邻近区域目前由下河线 110kV 变电站25、主供，白竹亭、横冲 110kV 变电站带部分负荷。其中由竹塘和横冲变供电区域因其处于供电线路的末端，供电电压低，供电可靠性得不到保障，客户对供电质量反映强烈。下河线变电站现有变电容量 231.5MVA，2006 年最大负荷已经超过 35MW，而商业中心之一的舜德城市摩尔第一期工程用电容量就将达到 15MVA，其终期用电容量将超过 30MVA，下河线变将面临增容压力。冷水滩城区电网结构示意图见附图 1Selection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPo26、intselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphForm Selection.ParagraphFormaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineS27、pacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2Selection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpa28、cingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphF aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaahFSelection.ParagraphFormat.LineSpaci29、ngLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphForm Selection.ParagraphFormaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa30、aaaat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2Selection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.Paragrap31、hFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphF aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa32、aaaaaaaaaaaaaaaaaaaaaaaaaaahF-4-2.2 负荷预测冷水滩城区为永州市市政府驻地，随着市政府招商引资工作的不断推进，冷水滩城区的经济发展迅速，城市基础设施建设加快，大型超市、酒店不断落成，房地产业在中国经济高速发展的热潮中也非常火爆，如舜德城市摩尔、万喜登酒店、超市、中粮国际等一系列工程正在修建当中，这当中的一部分工程即将投产，使得该片区域用电负荷急骤增长，冷水滩商业中心变建成后将主要带复兴片和凤凰园南片的负荷，冷水滩区各片区负荷分布见 表 21。表 21冷水滩负荷分布及增长预测表 单位：万千瓦片区功能区域07年08年09年10年递增20年递增滨江片区沿江风光带区033、.490.580.730.9719.5%2.07.5%河东片区行政、文化体育、居住2.512.823.423.8415.1%6.04.6%复兴片区居住及繁华商业功能区2.713.13.473.8313.9%6.04.6%凤凰园南片工业、行政、文化体育、居住1.311.421.551.699.0%3.05.9%凤凰工业区工业仓储1.541.681.842.09.0%4.07.2%Selection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselectio34、n.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphForm Selection.ParagraphFormaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLines35、ToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2Selection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesTo36、Points(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphF aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaahFSelection.ParagraphFormat.LineSpacingLinesToPo37、ints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphForm Selection.ParagraphFormaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineS38、pacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2Selection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.Lin39、eSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphF aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa40、aaaaaaaaaaaaaaaahF-5-火车西站片商贸物流、居住0.830.911.11.2211.7%2.05.1%百花塘片区居住生态1.221.481.611.7511.9%4.08.6%长丰片区工业、居住1.92.072.262.469.0%6.09.3%城郊片区建材、冶炼1.582.232.934.1352.6%7.05.4%合计14.116.318.921.915.8%40.06.2%2.3 建设必要性2.3.1 满足用电发展的需要冷水滩地处湖南省西南部，湘江上游，素有“湘西南门户”和“潇湘第一城”之称，是永州市委市政府所在地，是地级永州市的政治、经济、信息中心。已经初步形成了河东41、城南、城北、凤凰工业园和城西新城区等五区连接功能配套的工商城市。永州市在全面建设小康社会中，加快了中心城市市政基础设施建设的力度，以大投入带动大发展，中心城市建设全面提速。市委市政府确定“坚持以提质扩容为主线，以改善人居环境为根本，以基础设施配套为重点，完善规划体系，加快建设进程，增强城市功能，提升城市品位”的中心城市发展思路，使得冷水滩城区的城市建设与发展Selection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.Paragra42、aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphForm 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线路提高供电能力不太现实。由49、预测表可知 2007年复兴片和凤凰园南片的负荷总计 4.02 万千瓦，到 2008 年两片的用电负荷将增至 4.52 万千瓦，现有各变电站对其无供电能力，所以急需建设 110kV 变电站，以满足城市中心用电负荷增长的需要。2.3.1 提高供可靠性、保证电能质量、改善城区电网结构冷水滩城区以曲河变为主电源点形成了曲河竹塘下河线白竹亭横冲曲河和曲河珍珠塘横冲曲河两个环网。但是环网结构可靠性不强。正常情况下，这个环网均开环运行。第一个环网在白竹亭变开环，白竹亭变由曲河竹塘下河线白竹亭的线路供电，只有当这条线路出线故障停电时，白竹亭变才会接入曲河横冲白竹亭的线路。而曲河珍珠塘横冲曲河的环网，正常情况下50、也是由曲河珍珠塘变的线路供电。故障情况下，珍珠塘变由曲河横冲Selection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphForm 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线路供电区域分布不均匀，各变电站之间的 10kV 线路联络点较少，不具备负荷转供能力，故障情况下，不能保证供电可靠性。在某些繁华的商业中心，因用电负荷大，其 10kV 线路过载严重，用电负荷过于集中某条 10kV 线路上，线路结构不合理。3.系统方案3.1 接入系统方案方案一、新建的商业中心 110kV 变电58、站，拟从曲珍线接。此方案需新建从接点到变电站的 110kV 线路约 2X3.6 公里，线径与曲珍线相同为 LGJ-300/25。曲珍线是为配套珍珠塘 110kV 变电站于 2006年开始新建的 110kV 线路，到现在为止运行状况良好。将此线路进Selection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.Li59、neSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphForm 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LGJ-300。此方案新建的线路长度较短，也不需与其他线路交叉，但此线路为目前冷水滩城区的主供线路，其环网负荷已达到80MW以上，其正常运行运行方式为开环运行，电源由曲河 220kV 变66、经曲竹线、竹下线、下白线送至白竹亭变，而白竹亭变又正在增容，将城市摩尔 110kV变电站接在此回线路上，必会引起曲竹线、竹下线过载，使线路不能安全稳定运行，势必要对城市摩尔 110kV 变电站到曲河变的 110kV 线路进行改造，线路资大、建设周期长，线路改造过程中调度较为困难。3.2 方案比较从以上叙述容易看出，两个方案中方案一的投资最省，线路建设周期短,较优方案。方案二在变电站投运之前就需要对曲竹线、竹下线进行改造，否则不能满足稳定运行的要求。综上所述，推荐方案一为本所接入系统方案。Selection.ParagraphFormat.LineSpacingLinesToPoints(2)S67、election.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphForm 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变光纤通信站，扩建永州局、珍珠塘变、曲河变、冷水滩局光纤站。光纤电路采用本所配置一套 155M 的 SDH 光设备，曲河变、珍珠塘变在现有的 SDH 设备上增加一块光板，网络组织为商业中心变通信站以两点接入的方式进入城区中兴传输系统，电路容量按 155Mbit/s 配置。本所、永州局和冷水滩局各配置 1 台永州地网层 NOKIA 的 PCM 接入设备，相应话路按照实际需要配置。建设的光缆路由为：曲河变商业中心变珍珠塘变，二段长度分别为：12.16Km、18.78Km。光缆总长约为 30.94kM。光缆124、为 24 芯 ADSS 光缆。Selection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphForm 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Selection.Par139、agraphFormaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2Selection.Paragra140、phFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphF aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa141、aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaahFSelection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.Parag142、raphFormat.LineSpacingLinesToPoction.ParagraphForm 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Selection.ParagraphFormaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacin162、gLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2Selection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToP163、oints(2)Selection.ParagraphF aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaahFSelection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.Paragraaaaaaaaaaaaaaaaaaaaaaaa164、aaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphForm Selection.ParagraphFormaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat165、.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2Selection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphForm166、at.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphF aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaahF-21-所址北向围墙 58.0m、拆除所址东、北向挡土墙 450 方。所址周围目前无可见污染源，清洁度较好。根据永州地区污秽图，永州为户外 III级，由于本167、变电所采用半户内布置，污秽等级考虑采用室内 II 级，设备定货时公称爬电比距应取瓷质材料1.8cm/kV，有机材料2.0cm/kV（按系统最高运行电压取）。所址进所道路可从东面的冷水滩面粉厂仓库环形道路引接，需建进所道路约为 30m。4.4 建筑规模及结构设想根据国家质量技术监督局 2001 年 2 月颁布的中国地震动参数区划图，本所区地震动峰值加速度757.结论本工程项目技术经济评价较优,具有可行性。永州电力勘测设计院有限公司冷水滩商业中心 110kV 输变电工程可行性研究报告-46-435-B0801K-10435-B0801K-10冷水滩商业中心冷水滩商业中心 110kV110kV 输变168、电工程输变电工程可行性研究报告可行性研究报告永州电力勘测设计院有限公司永州电力勘测设计院有限公司二七年七月二日二七年七月二日等级：乙级等级：乙级设计证书设计证书编号：编号：182067-sy182067-sy批批准：准：审审核：核：校校核：核：编编写：写：会会签签：目目录录1.1.工程概述工程概述.1 11.1 工程概述.11.2 编制范围.21.3 设计水平年.32.2.工程建设必要性工程建设必要性.3 32.1 电力系统概况.32.2 负荷预测.42.3 建设必要性.53.3.系统方案系统方案.7 73.1 接入系统方案.73.2 方案比较.83.3 系统一次部分.93.4 系统二次部分.169、123.5 系统通信.144.4.所址选择及工程设想所址选择及工程设想.20204.1 商业中心变电站站址选择.204.2 电气总平面布置.204.3 配电装置及竖向布置.204.4 建筑规模及结构设想.214.5 环境保护.235.5.输电线路工程输电线路工程.24245.1 总述.245.2 路径方案.275.3 设计气象条件.315.导线、地线选型.325.5 绝缘配合.335.绝缘子串及金具.345.7 杆塔与基础.366.6.投资估算及技术经济评价投资估算及技术经济评价.37376.1 投资估算.386.2 技术经济评价.387.7.结论结论.4545附附录录附图：附图：1、电网地理接线现状图2、本期工程接入系统地理接线图3、电力系统远景规划图4、光纤通信网络图5、变电所电气主接线图6、变电所电气总平面布置图7、110kV 进线路径方案图8、杆塔一览图9、基础一览图