富民赤鹫（罗免）光伏电站接网工程环境影响报告表（电磁专题）

专题评价报告项目名称：富民县赤鹫（罗免）光伏电站接网工程建设单位（盖章）：云南电网有限责任公司昆明供电局编制日期：二O二二年五月i -1- -3- -3- -3- -3- -4-3、工程概况及工程分析 -5- -5-3.1.1建设内容及项目组成 -5-3.1.2线路交叉跨越情况 -7- -9- -9-4、评价因子、评价范围、评价标准及评价方法 -11- -11- -11- -11- -11- -12- -12-5、电磁环境影响现状调查与评价 -14- -14- -15- -15- -15-6、电磁环境影响预测与评价 -19- -19-6.1.1架空输电线路电磁环境影响理论预测 6.1.2输电线路电磁环境影响分析小结 -46- -48- -49- -51- -52- -52- -52- -52- -52- -53- -53-2020年中央经济工作会议将“做好碳达峰、碳中和水平面年太阳总辐射资源量1440千瓦时/平米，倾斜面年太阳总辐射资源量1555千瓦时/平米，测算太阳能发电潜力为2400亿千瓦时/年。拥有较好资源“十四五”期间随着云南高载能用户的大量投产和西电东送规模的持续增公司编制了《富民县赤鹫（罗免）光伏电站接网工程可行性研究报告》，同年（HJ24-2020），本工程环境影响评价设置电磁环境影响专题评价报告。接受评2、编制依据2.1相关法律、法规），（5）《建设项目环境影响评价分类管理名录（2021年版）》（生态环境）；（6）《建设项目环境保护管理条例》，中华人民共和国国务院令第6822.2环境影响评价有关标准、技术规程）；）；）；）；）；2.3设计的规程、规范（1）《输电线路对电信线路危险和干扰影响防护设计规程》）；）；）；）；2.4工程技术资料3、工程概况及工程分析3.1.1建设内容及项目组成本工程分为线路工程和对侧变电站间隔两部分：富民县拟建赤鹫(罗免)光伏电站升压站220kV出线构架，终点为昆明市五华区西翥街道平地下村东侧已建500kV厂口变220kV进线构架，线路长度约本期利用500kV厂口变电站内自东向西的第三个220kV预留出线间隔，接注：拟建赤鹫(罗免)光伏电站升压站相关内容另行委托具备环境影响评价能力的单位进行环境影响评价，本次评价不再重复评价。本期新建间隔位置（500kV厂口变）表3-2主要工程内容及规模工程分类工程内容建设规模主体工程线路工程220kV输电线起点为云南省富民县拟建赤鹫(罗免)光伏电站升压站220kV出线构架，终点为昆明市五华区西翥街道平地下村东侧已建500kV厂口变220kV进线构架，单回路架设，线路路径长约46.5km，其中2×300mm²导线段16.4km，2×500mm²导线段30.1km。光缆通信随本次新建线路上方架设两根48芯OPGW光缆。进厂口站约7公里采用2根OPGW-120，其余段采用2根OPGW-100。塔基工程塔基10mm、15mm冰区直线塔采用猫头塔、耐张塔采用干字型塔；20mm冰区直线塔采用酒杯塔、耐张塔采用干字型塔。共新建铁塔150基，其中，直线塔87基、耐张塔63基。对侧变电站工程在500kV厂口变电站内利用220kV出线间隔1个，占用自东向西的第三个220kV预留出线间隔，采用瓷柱式SF6断路器，建设配套继电保护及安全自动装置、调度自动化、电能量计量系统、通信工程等二次设施临时工程料场工程施工过程中使用的混凝土粗、细骨料及块石料从所在镇区合法料场购买，施工现场不设置取土场和砂石料加工系统弃渣场工程施工期产生土石方开挖总量19565m3（其中表土剥离4600m3，一般土石方14965m3产生的表土用于施工后生态恢复使用，其余土石方用于塔基回填、塔基周边护坡使用，无永久弃渣产生，不设置取土场和永久弃渣场施工营地施工现场不设置集中施工生活营地，施工人员生活依托周边集镇、民房自行解决；本工程分段施工，塔基浇筑采用人工现场拌和，拌和点位于各塔基施工点，不设置集中混凝土生产加工营地。根据工程设计，施工期所用铁塔等直接购买供应商生产的成品使用，施工期施工材料堆放塔基施工处，不另设施工营地，施工结束后进行恢复治理临时施工场地本工程设置临时塔基施工区150处、临时牵张场6处、临时跨越施工场地3处。施工结束后进行恢复治理环保工程施工物料采用篷布覆盖、遮挡密目网1500m2，柔性防护网1200m2施工临时截排水等水保措施临时排水沟856m陡坡塔基设置的浆砌石挡土墙、护坡、浆砌石挡土墙、护坡共计2600m2；浆砌排水沟400m排水沟塔基安全警示牌、电力设施保护标识牌塔基安全警示牌45个、电力设施保护标识牌45个临时占地植被恢复塔基施工区、牵张场、跨越施工场地施工结束后进行植被恢复，面积20946m2。表3-2本工程主要技术指标序号项目富民县赤鹫（罗免）光伏电站接网工程1线路长度新建线路全长约46.5km，新建杆塔150基。2线路架设方式单回路架设3面积永久11844m29102m2合计20946m24导线型号2×300导线段采用2×JL/LB20A-300/40铝包钢芯铝绞线，2×500导线段采用2×JL/LB20A-500/45铝包钢芯铝绞线5排列方式三角排列、水平排列6动态投资9663万元3.1.2线路交叉跨越情况表3-3本工程线路主要交叉跨越情况表序号名称跨(穿)越杆号跨(穿)越次数备注地点1±800kV楚穗直流#108-#109石羊厩2500kV厂口至七甸I回线#002-#003秧草塘3500kV龙厂甲线#162-#1634500kV龙厂乙线#164-#1655220kV厂中线（与#18-#19丁家麦塘6220kV厂赤I回线#37-#38何家麦塘7220kV厂新I回线#58-#59鲁世达8220kV赤狮线#26-#27线路远期开断接入拟建三多变，该段拆除荒田村935kV款散线鲁世达35kV崇款白东线莫衣龙、马龙汪表3-4220kV输电线路导线与其它设施交叉时安全距离要求序号线路经过区域/被跨越物名称备注1居民区7.5最大弧垂情况下，导线对地面的最小距离2非居民区6.53交通困难地区5.54步行可以到达的山坡5.5最大风偏情况下，导线与山坡、峭壁和岩石的最小净空距离5步行不能到达的山坡、峭壁和岩石4.06建筑物6.0最大弧垂情况下，导线与建筑物之间的最小垂直距离5.0最大风偏情况下，边导线与建筑物之间的最小净空距离2.5无风情况下，边导线与建筑物之间的水平距离7树木4.5当跨越时，导线与树木之间（考虑自然生长高度）的最小垂直距离4.0最大风偏情况下，输电线路通过公园、绿化区或防护林带，导线与树木之间的最小净空距离8果树、经济作物、城市绿化灌木及街道树3.5输电线路通过果树、经济作物、城市绿化灌木及街道树时，与树木之间的最小垂直距离9铁路8.5至轨顶4.0至承力索或接触线公路（高速公路、一级~四级公路）8.0至路面通航河流7.0至5年一遇洪水位3.0至最高航行水位的最高船桅顶不通航河流4.0至百年一遇洪水位6.5冬季至冰面弱电线路220kV5.0至被跨越弱电线路，电力线路架设在弱电线路上方。电力线路5.0至被跨越电力线路，电压等级较高的线路架设在电压等级较低的线路上方。220kV7.0330kV9.0500kV750kV根据工程拟建线路设计方案，拟建线路与交叉跨越物间最小距离均符合3.3施工设计环保对策措施（3）进行线路路径协调工作，避开城镇规划区、开发区、居民区、军事设施、厂矿、大型采石场等重要区域，将区域环境（5）尽量避开自然保护区、国有林场、水库水源林、风景区等，在路径选（7）根据工程特点合理规划设计使用档距大，根开小的塔型，从而减小线（8）为了保持自然地形、地貌。铁塔采用全方位长短腿设计，配合全方位（9）设计时注意填挖平衡，减少土石方量，减少借土和弃土。基面和基坑4、评价因子、评价范围、评价标准及评价方法表4-1电磁环境公众曝露控制限值时段环境要素评价因子现状评价因子预测评价因子运营期电磁环境影响工频电场强度（kV/m）工频磁感应强度(μT）工频电场强度（kV/m）工频磁感应强度(μT）根据《环境影响评价技术导则输变电》（HJ24-2020），电磁环境评价工表4-2电磁环境评价工作等级划分表分类电压等级工程条件评价等级交流220kV输电线路边导线地面投影外两侧各15m范围内无电磁环境敏感目标的架空线路三级边导线地面投影外两侧各15m范围有电磁环境敏感目标的架空线路二级），表4-3电磁环境公众曝露控制限值频率范围电场强度E（V/m）磁感应强度B(μT）0.025kHz~1.2kHz200/f5/f输电线路工作频率（0.05kHz）4000V/m（4kV/m）100μT（0.1mT）注：1、频率f的取值为0.05kHz。2、架空输电线路线下的耕地、园地、牧草地、畜禽饲养地、养殖水面、道路等场所，其频率50Hz的电场强度控制限值为10kV/m，且应给出警示和防护指示标志。本工程220kV输电线路电磁环境为二级评价，根据《环境影响评价技术导处的典型线位电磁环境现状可实测，也可利用评价范围内已有的最近3年内的本次评价对220kV输电线路电磁环境现状采用现状实测数据进行评价；运营期输电线路电磁环境影响预测采用《环境影响评价技术导则输变电》表4-4电磁环境保护目标一览表层众暴露控制限值4kV/m房房房村房房房房5、电磁环境影响现状调查与评价5.1布点原则及监测布点）：的布点方法以定点监测为主，线路小于100km沿线电磁环境现状监测点位最少表5-1工程现状监测点位布设一览表序号测点位置监测内容1拟建拟建220Kv赤鹫升压站场址中心2500kV厂口变电站东、南、西、北围墙外5m处3秧草塘水泵房1#4丁家麦塘2#5宝石洞水库管理用房3#6石羊厩小村4#7石羊厩5#8鲁世达6#9肖家村种植户看守房7#±800kV楚穗直流交叉处8#500kV厂口至七甸I回线交叉处9#500kV龙厂甲线交叉处10#500kV龙厂乙线交叉处11#220kV厂中线（与220kV厂赤I回线同塔）交叉处12#220kV厂赤I回线交叉处13#220kV厂新I回线交叉处14#220kV赤狮线交叉处15#工程跨越S102省道处16#本工程新增间隔处垂直于500kV厂口变电站址围墙外1m、5m、10m、15m、20m、25m、30m、35m、40m、45m、50m（17＃-28#)注：E－工频电场强度、B－工频磁感应强度。5.2监测布点的合理性、代表性分析本工程输电线路沿线主要为山地和丘陵，沿线电磁环境、声环境处于相当水平。本次监测的监测点位布置于工程起止点及小于100km沿线电磁环境现状监测点位最少为2个要求，能够反映输电线路沿委托监测单位中博源检测（云南）有限公司按照《表5-2监测期间气象条件温度(℃)湿度（RH%）测量高度晴11.5-27.545-52表5-3工频电场强度、工频磁感应强度现状监测结果序号测点位置2022.03.06-07工频电场强度（V/m）工频磁感应强度(μT）1拟建220Kv赤鹫升压站场址中心0.132500kV厂口变电站东围墙外5m处2.43500kV厂口变电站南围墙外5m处3.21500kV厂口变电站西围墙外5m处500kV厂口变电站北围墙外5m处0.643秧草塘水泵房1#4丁家麦塘2#7020.695宝石洞水库管理用房3#4.56石羊厩小村4#2.690.17石羊厩5#0.088鲁世达6#5.819肖家村种植户看守房7#±800kV楚穗直流交叉处8#40.7500kV厂口至七甸I回线交叉处9#3.25500kV龙厂甲线交叉处10#500kV龙厂乙线交叉处11#2.25220kV厂中线（与220kV厂赤I回线同塔）交220kV厂赤I回线交叉处13#220kV厂新I回线交叉处14#0.57220kV赤狮线交叉处15#7260.71工程跨越S102省道处16#本工程新增间隔处垂直于500kV厂口变电站址围2.220本工程新增间隔处垂直于500kV厂口变电站址围墙外5m21本工程新增间隔处垂直于500kV厂口变电站址围墙外10m22本工程新增间隔处垂直于500kV厂口变电站址围墙外15m23本工程新增间隔处垂直于500kV厂口变电站址围墙外20m24本工程新增间隔处垂直于500kV厂口变电站址围墙外25m25本工程新增间隔处垂直于500kV厂口变电站址围墙外30m86226本工程新增间隔处垂直于500kV厂口变电站址围墙外35m78727本工程新增间隔处垂直于500kV厂口变电站址围墙外40m70428本工程新增间隔处垂直于500kV厂口变电站址围墙外45m97429本工程新增间隔处垂直于500kV厂口变电站址围墙外50ma拟建220Kv赤鹫升压站：拟建220Kv赤鹫升压站场址d500kV厂口变电站：500kV厂口变电站界外工频电场强度在1229~本期利用500kV厂口变电站预留间隔处1～50m工频电场强度为704~a拟建220Kv赤鹫升压站：拟建220Kv赤鹫升压站场址b保护目标：工程沿线保护目标工频磁感应值为1.7μT，满足《电磁环境控制限值》（GB8702-2《电磁环境控制限值》（GB8702-2014）中工频磁感应强度公众曝露控制限值d500kV厂口变电站：500kV厂口变电站界外工频磁感应强度在0.64~本期利用500kV厂口变电站预留间隔处1～50m工频磁感应强度为1.45~6、电磁环境影响预测与评价6.1架空输电线路电磁环境影响预测分析6.1.1架空输电线路电磁环境影响理论预测6.1.1.1架空输电线路工频电场预测模型「λλ21「λλ21|2|2|:λ…λ]「Q]λnλ…λ]「Q]λn2…λnn为计算地面电场强度的最大值，通常取设计最大弧垂时导线的最小对地高Ex=Qi(xxi)Ey=Qi(yyi)Li、L'i——分别为导线I及镜像至计算点的距离，m。Ix1x2x3xH=x1x2x3xH=H+H+H xyy1y2 xyH=H2+H2为了与环境标准相对应，需要将磁场强度转B=μ0H；μ0——常数，真空中磁导率(μ0=4π×10-7H/m）。6.1.1.2工程输电线路模式预测参数表6-1工程塔型一览表铁塔塔型导线截面积导线直径分裂分裂方式排列方式设计最低呼高/m10mm冰区2C1Y5-ZM12×300mm²23.9mm400mm双分裂三角2C1Y5-ZM22C1Y5-ZM32C1Y5-ZM42C1Y5-J12C1Y5-J22C1Y5-J32C1Y5-J42E1Y5-ZMH12×500mm²30mm500mm2E1Y5-ZMH22E1Y5-ZMH32E1Y5-ZMH42E1Y5-J12E1Y5-J22E1Y5-J32E1Y5-J415mm冰区2E1Y6-ZMH12×500mm²30mm500mm三角2E1Y6-ZMH22E1Y6-ZMH32E1Y6-ZMH42E1Y6-J12E1Y6-J22E1Y6-J32E1Y6-J420mm冰区2C1Y3-Z12×300mm²23.9mm400mm水平2C1Y3-Z22C1Y3-J12C1Y3-J22C1Y3-J3综合对比分析，三角排列电磁最不利影响塔型为间距最大的2E1Y6-J4塔型，水），表6-2理论计算选择导线及参数线路参数富民县赤鹫（罗免）光伏电站接网工程线路220KV800A导线型式JL/LB20A-500/45铝包钢芯铝绞线2×JL/LB20A-300/40铝包钢芯铝绞线直径3023.9分裂间距500400排列方式三角排列水平排列导线对地高度非居民区6.5m居民区7.5m、8m、9m非居民区6.5m居民区7.5m、9m、10m主要塔型2E1Y62C1Y3平）），表6-2工频电场预测计算结果距离线路对地6.5m时地面高度1.5m处工频电场综合强度（kV/m）线路对地净空7.5m时地面高度1.5m处工频电场综合强度（kV/m）线路对地净空8m时地面高度1.5m处工频电场综合强度（kV/m）线路对地净空9m时地面高度1.5m处工频电场综合强度（kV/m）-500.06990.07080.07250.0739-490.07280.07380.07570.0772-480.07580.07710.07900.0807-470.07910.08060.08260.0845-460.08270.08430.08640.0886-450.08650.08840.09060.0931-440.09060.09280.09500.0979-430.09500.09750.09990.1031-420.09980.10270.10520.1088-410.10490.10830.11090.1150-400.11060.11450.11720.1218-390.11680.12130.1293-380.12350.12870.13170.1376-370.13100.13700.14020.1468-360.13930.14620.14950.1570-350.14850.15640.15990.1684-340.15870.16800.17160.1812-330.17030.18090.18480.1956-320.18330.19560.19970.2119-310.19820.21240.21660.2304-300.21520.23160.23600.2516-290.23490.25370.25840.2758-280.25760.27940.28420.3037-270.28430.30930.31420.3360-260.31570.34440.34930.3735-250.35310.38580.39060.4173-240.39770.43500.43940.4686-230.45160.49370.49750.5289-220.51700.56410.56690.6001-210.59710.64910.65010.6843-200.69570.75220.75050.78410.81810.87760.87180.90260.97071.03081.01881.04331.16211.21811.19701.20971.40291.44731.41251.40581.70621.72651.67191.63462.08752.06441.89802.56302.46732.34352.19483.14652.93672.75702.51863.84143.46263.20922.85534.62634.01603.67193.18025.43394.54054.09613.45786.13244.95074.41363.64446.53775.14754.54993.69716.48785.05424.45023.58655.94714.65584.10393.30805.03654.00923.55202.88543.95363.21792.87292.36782.89002.40542.16881.8283-12.04761.73811.59121.388701.76301.51081.40751.254712.24341.90001.76271.527923.17472.63492.41382.030534.26713.46173.13592.585845.33384.23483.80323.095556.17904.83594.32133.495166.61425.16954.61963.742076.55235.19484.66843.818786.06644.94384.48983.736195.33264.50184.14513.52744.52533.96663.70833.23633.75913.41663.24322.90493.08802.90112.79392.56622.52652.44402.38482.24252.06852.05222.02611.94631.69991.72331.71901.68311.40501.45071.45991.45371.16951.22601.24321.25630.98111.04131.06291.08770.82980.88960.91300.9445200.70770.76470.78840.8230210.60860.66150.68460.7201220.52780.57600.59780.6328230.46130.50480.52510.5586240.40640.44520.46390.4954250.36060.39510.41220.4413260.32230.35270.36830.3950270.28990.31660.33080.3552280.26230.28580.29860.3208290.23870.25940.27090.2909300.21840.23650.24690.2650310.20080.21660.22600.2423320.18540.19920.20770.2223330.17190.18400.19170.2048340.15990.17060.17750.1893350.14930.15860.16500.1755360.13990.14800.15380.1632370.13140.13850.14380.1522380.12370.13000.1348390.11680.12230.12670.1335400.11050.11530.11930.1255410.10470.10900.11270.1182420.09940.10320.10660.1115430.09460.09790.10100.1055440.09010.09300.09600.1000450.08600.08860.09130.0949460.08220.08440.08690.0902470.07860.08060.08300.0859480.07530.07700.07920.0819490.07220.07370.07580.0782500.06930.07060.07260.0748图6-1导线对地净空高度6.5m时线下工频电场强度分布曲线（距地1.5m）图6-2导线对地净空高度7.5m时线下工频电场强度分布曲线图（距地1.5m）图6-3导线对地净空高度8m时线下工频电场强度分布曲线图（距地1.5m）图6-4导线对地净空高度9m时线下工频电场强度分布曲线图（距地1.5m）在地面1.5m高度处产生的最大工频电场强6.66142kV/m，满足线路为此，本次评价要求：工程下步施工设计时，三角排列架空输电线路经过），表6-3工频磁场预测计算结果距离（m）线路对地6.5m时地面高度1.5m处工频磁感应综合强度(μT）线路对地净空7.5m时地面高度1.5m处工频磁感应综合强度(μT）线路对地净空8m时地面高度1.5m处工频磁感应综合强度(μT）线路对地净空9m时地面高度1.5m处工频磁感应综合强度(μT）-505.60355.58835.57985.5612-495.72035.70415.69515.6754-485.84215.82495.81545.7944-475.96925.95105.94085.9184-466.10216.08266.07186.0479-456.24106.22036.20876.1833-446.38656.36436.35206.3247-436.53916.51536.50206.4728-426.69916.67366.65936.6280-416.86736.83986.82456.7908-407.04437.01466.99816.9618-397.23077.19867.18087.1416-387.42737.39267.37337.3308-377.63517.59747.57647.5303-367.85507.81397.79107.7408-358.08818.04328.01827.9634-348.33568.28638.25908.1990-338.59898.54478.51478.4488-328.87968.81988.78668.7141-319.17959.11339.07658.9963-309.50069.42699.38619.2970-299.84539.76299.71739.6180-2810.216210.123610.07259.9614-2710.616410.512010.454310.3294-2611.049610.931010.865810.7246-2511.520011.384511.310211.1499-2412.032411.876611.791411.6084-2312.592612.412312.314112.1038-2213.207612.997212.883112.6401-2113.885313.637913.504313.2215-2014.635514.341714.184113.852815.469615.117414.929914.538916.401215.974415.749415.284517.446216.923316.650716.093918.623017.974817.641516.970119.952119.138918.727817.913421.454120.422119.911418.919223.146121.823621.185719.975225.032223.326622.529621.057627.085224.886923.897822.125729.213726.416325.210323.119231.216227.767826.346523.958832.746828.739927.153524.556633.367729.123227.484624.838532.759828.794327.262024.773830.983027.806226.532424.397328.503726.394125.470023.809525.939524.886824.320023.151623.810723.599023.325922.5701-122.461422.767022.678722.1860022.078922.529122.492922.0751122.713022.923022.800322.2585224.280323.885823.548222.7010326.557125.254324.601723.3144429.155326.769325.753923.9689531.516428.104626.754624.5161633.031728.943827.369424.8218733.320129.091827.452524.8004832.432128.544526.991324.4344930.743827.456926.087023.768228.683126.043824.893322.881926.559824.495423.557121.863024.543222.943122.189120.786422.704721.462720.859419.707621.061320.090019.606518.662319.604418.836918.447117.671418.315417.701817.385016.744817.173316.676916.417315.885416.158315.752015.537215.092215.252514.916214.736914.36192014.440614.159414.008313.69002113.709513.472113.343713.07162213.048312.846112.736212.50192312.447712.274012.179311.97632411.900011.749711.667411.49052511.398711.267711.195811.04062610.938010.823210.760010.62312710.513410.412110.356210.23502810.120910.03109.98139.8734299.75689.67679.63239.5357309.41829.34659.30679.2200319.10269.03819.00238.9240328.80778.74948.71708.6462338.53158.47868.44938.3849348.27238.22428.19748.1388358.02857.98467.96017.9066367.79887.75867.73627.6871377.58217.54517.52457.4794387.37717.34317.32427.2826397.18317.15177.13427.0958406.99926.97016.95396.9183416.82456.79756.78246.7494426.65846.63336.61936.5885436.50036.47696.46386.4352446.34956.32776.31556.2888456.20576.18536.17396.1489466.06836.04926.03856.0150475.93695.91895.90895.8869485.81125.79435.78485.7641495.69075.67475.66595.6464505.57515.56015.55175.5333图6-6导线对地高度6.5m时线下工频磁场强度分布曲线图（距地1.5m）图6-7导线对地净空高度7.5m时线下工频磁场强度分布曲线图（距地1.5m）图6-8导线对地净空高度8m时线下工频磁场强度分布曲线图（距地1.5m）图6-9最导线对地净空高度9m时线下工频磁场强度分布曲线图（距地1.5m）线路产生的工频电场强度最不利塔型为2C1Y3-Z2，根据《110kV～750kV表6-4工频电场预测计算结果距离（m）线路对地6.5m时地面高度1.5m处工频电场综合强度（kV/m）线路对地净空7.5m时地面高度1.5m处工频电场综合强度（kV/m）线路对地净空9m时地面高度1.5m处工频电场综合强度（kV/m）线路对地净空10m时地面高度1.5m处工频电场综合强度（kV/m）-500.09450.10610.12260.1330-490.10050.11280.1303-480.10710.12010.13860.1501-470.12810.14760.1597-460.13680.15750.1702-450.13070.14630.16820.1817-440.14010.15670.18000.1942-430.15050.16820.19280.2078-420.16190.18080.20700.2228-410.17450.19480.22260.2393-400.18860.21020.23970.2574-390.20410.22730.25870.2774-380.22150.24630.27980.2994-370.24090.26750.30310.3239-360.26270.29130.32920.3510-350.28730.31790.35820.3812-340.31500.34790.39080.4148-330.34640.38190.42730.4525-320.38220.42030.46850.4946-310.42320.46410.51500.5420-300.47010.51410.56770.5954-290.52440.57150.62760.6556-280.58720.63750.69580.7236-270.66050.71400.77370.8008-260.74630.80280.86310.8884-250.84740.90630.96570.9879-240.96721.02771.08381.1010-231.17051.21991.2296-221.33901.37691.3755-211.48721.53841.55761.5406-201.73671.77491.76521.72642.03992.05512.00241.93382.40882.38602.27092.16242.85702.77402.57042.40973.39743.22242.89702.67024.03843.72763.24112.93414.77464.27353.58523.18635.57184.82373.90203.40636.34645.31504.15533.56966.95425.66114.30513.65187.22055.77504.31823.63507.03025.60954.18213.51476.42045.19183.91593.30605.58164.62883.57303.04444.78524.08373.23492.78284.31583.73872.99352.58034.36463.71832.91382.48024.87463.99392.99092.48505.57894.39893.14972.5533-16.16874.73883.29372.625806.39774.86983.35042.655716.16874.73883.29372.625825.57894.39893.14972.553334.87463.99392.99092.485044.36463.71832.91382.480254.31583.73872.99352.580364.78524.08373.23492.782875.58164.62883.57303.044486.42045.19183.91593.306097.03025.60954.18213.51477.22055.77504.31823.63506.95425.66114.30513.65186.34645.31504.15533.56965.57184.82373.90203.40634.77464.27353.58523.18634.03843.72763.24112.93413.39743.22242.89702.67022.85702.77402.57042.40972.40882.38602.27092.16242.03992.05512.00241.9338201.73671.77491.76521.7264211.48721.53841.55761.5406221.33901.37691.3755231.17051.21991.2296240.96721.02771.08381.1010250.84740.90630.96570.9879260.74630.80280.86310.8884270.66050.71400.77370.8008280.58720.63750.69580.7236290.52440.57150.62760.6556300.47010.51410.56770.5954310.42320.46410.51500.5420320.38220.42030.46850.4946330.34640.38190.42730.4525340.31500.34790.39080.4148350.28730.31790.35820.3812360.26270.29130.32920.3510370.24090.26750.30310.3239380.22150.24630.27980.2994390.20410.22730.25870.2774400.18860.21020.23970.2574410.17450.19480.22260.2393420.16190.18080.20700.2228430.15050.16820.19280.2078440.14010.15670.18000.1942450.13070.14630.16820.1817460.13680.15750.1702470.12810.14760.1597480.10710.12010.13860.1501490.10050.11280.1303500.09450.10610.12260.1330图6-11导线对地高度6.5m时线下工频电场强度分布曲线（距地1.5m）图6-12导线对地净空高度7.5m时线下工频电场强度分布曲线（距地1.5m）图6-13导线对地净空高度9m时线下工频电场强度分布曲线（距地1.5m）图6-14导线对地净空高度10m时线下工频电场强度分布曲线（距地1.5m）为此，本次评价要求：工程下步施工设计时，水平排列架空输电线路经过居民区时，导线对地净空高度应不低于10m；经过非居民区时，导线对地净空表6-5工频磁场预测计算结果距离线路对地6.5m时地面高度1.5m处工频磁感应综合强度(μT）线路对地净空7.5m时地面高度1.5m处工频磁感应综合强度(μT）线路对地净空9m时地面高度1.5m处工频磁感应综合强度(μT）线路对地净空10m时地面高度1.5m处工频磁感应综合强度(μT）-505.71145.69425.66355.6400-495.83535.81695.78425.7592-485.96485.94525.91035.8835-476.10036.07936.04206.0134-466.24236.21996.17986.1492-456.39136.36726.32426.2912-446.54786.52186.47556.4401-436.71246.68436.63446.5962-426.88586.85546.80146.7601-417.06867.03576.97716.9323-407.26187.22597.16227.1136-397.46617.42707.35757.3046-387.68277.63997.56397.5061-377.91277.86577.78237.7190-368.15748.10558.01387.9443-358.41838.36098.25968.1829-348.69718.63338.52108.4362-338.99568.92458.79948.7053-329.31629.23649.09668.9917-319.66149.57159.41449.2971-3010.03419.93239.75509.6231-2910.437910.321810.12069.9717-2810.876710.743510.513910.3450-2711.355311.201510.937910.7453-2611.879311.700311.395811.1750-2512.455412.245411.891211.6367-2413.091412.842912.428012.1330-2313.796813.500013.010312.6664-2214.582814.224613.642113.2390-2115.462615.025714.327213.8522-2016.451915.912815.068614.506117.568516.895315.867315.198618.831817.981016.721015.924420.260419.173417.621816.672921.867620.466218.552717.426423.649721.834819.483618.158225.564923.222820.366518.830527.497524.526421.133719.395329.212025.582821.700419.798230.337226.185121.977819.987330.457626.139821.897419.926329.345425.360521.437119.607027.155123.929220.636119.055824.340722.067619.587018.329721.386520.039718.409617.504718.629618.069517.223516.660616.249516.311816.130015.870714.329914.864015.206515.195512.916513.787614.509314.6811-112.046814.076014.3597011.752512.899813.929114.2504112.046814.076014.3597212.916513.787614.509314.6811314.329914.864015.206515.1955416.249516.311816.130015.8707518.629618.069517.223516.6606621.386520.039718.409617.5047724.340722.067619.587018.3297827.155123.929220.636119.0558929.345425.360521.437119.607030.457626.139821.897419.926330.337226.185121.977819.987329.212025.582821.700419.798227.497524.526421.133719.395325.564923.222820.366518.830523.649721.834819.483618.158221.867620.466218.552717.426420.260419.173417.621816.672918.831817.981016.721015.924417.568516.895315.867315.19862016.451915.912815.068614.50612115.462615.025714.327213.85222214.582814.224613.642113.23902313.796813.500013.010312.66642413.091412.842912.428012.13302512.455412.245411.891211.63672611.879311.700311.395811.17502711.355311.201510.937910.74532810.876710.743510.513910.34502910.437910.321810.12069.97173010.03419.93239.75509.6231319.66149.57159.41449.2971329.31629.23649.09668.9917338.99568.92458.79948.7053348.69718.63338.52108.4362358.41838.36098.25968.1829368.15748.10558.01387.9443377.91277.86577.78237.7190387.68277.63997.56397.5061397.46