郴州桂阳仁义大河升压站～陈溪村汇集站220千伏线路工程环境影响报告表

图7。表7220kV单回线路（15mm冰区）工频电场、工频磁感应强度预测结果一览表距线路中心水平距离（m）工频电场(单位：kV/m)工频磁感应强度(单位：μT)导线对地22m导线对地28m导线对地22m导线对地27m地面1.5m地面1.5m地面5m地面1.5m地面1.5m地面5m00.1620.0750.26010.0316.2138.10910.1870.0900.26510.0146.2068.09720.2450.1240.2789.9626.1848.06130.3170.1640.2989.8766.1488.00240.3920.2060.3239.7576.0977.92150.4640.2470.3509.6076.0347.81860.5320.2870.3799.4295.9587.69670.5930.3230.4069.2265.8717.55580.6460.3570.4328.9995.7727.39890.6900.3870.4558.7535.6647.226100.7260.4140.4768.4905.5487.042110.7540.4370.4938.2155.4246.848120.7730.4560.5087.9315.2946.646130.7840.4710.5187.6405.1596.438140.7880.4830.5267.3475.0196.226150.7850.4910.5307.0534.8776.011160.7770.4960.5316.7614.7335.796170.7640.4980.5306.4744.5895.583180.7470.4980.5266.1924.4445.371190.7270.4950.5205.9184.3005.163200.7040.4900.5125.6534.1574.960210.6800.4830.5025.3974.0164.761220.6540.4740.4915.1513.8784.569230.6270.4640.4794.9163.7434.383240.6010.4540.4674.6913.6114.203250.5740.4420.4534.4763.4824.030260.5470.4290.4394.2723.3583.864270.5210.4170.4254.0783.2373.705280.4960.4030.4103.8953.1203.553290.4710.3900.3963.7203.0083.407300.4480.3770.3823.5552.8993.268310.4250.3630.3673.3992.7943.136320.4040.3500.3533.2512.6943.010330.3830.3370.3403.1112.5972.890340.3630.3240.3262.9782.5052.775350.3450.3120.3132.8532.4162.666360.3270.2990.3012.7352.3312.563370.3100.2880.2892.6232.2492.464380.2950.2760.2772.5162.1712.370390.2800.2650.2662.4162.0962.281400.2660.2540.2552.3212.0242.196410.2520.2440.2442.2311.9552.116420.2400.2340.2342.1451.8892.039430.2280.2250.2252.0641.8261.965440.2170.2160.2151.9871.7661.896450.2060.2070.2071.9141.7081.829460.1960.1980.1981.8451.6531.766470.1870.1900.1901.7791.6001.706480.1780.1830.1821.7171.5491.648490.1700.1760.1751.6571.5011.593500.1620.1690.1681.6001.4541.541图6工频电场强度预测结果图7工频磁感应强度预测结果根据预测结果，可得出如下结论：①线路经过非居民区，本工程220kV单回线路（20mm冰区）地面上方1.5m处最大工频电场强度、工频磁感应强度分别为0.899kV/m、11.420μT；本工程220kV单回线路（15mm冰区）地面上方1.5m处最大工频电场强度、工频磁感应强度分别为0.788kV/m、10.031μT；均能满足《电磁环境控制限值》（GB8702-2014）中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10kV/m的电场强度控制限值要求，也可满足100μT的磁感应强度控制限值要求。②线路经过居民区，本工程220kV单回线路（15mm冰区）地面上方1.5m处最大工频电场强度、工频磁感应强度分别为0.498kV/m、6.213μT，5m处最大工频电场强度、工频磁感应强度分别为0.531kV/m、8.109μT；均能满足《电磁环境控制限值》（GB8702-2014）中4000V/m、100μT的限值要求。（5）敏感目标电磁环境影响预测分析本工程架空线路沿线电磁环境敏感目标共有4处。按照《环境影响评价技术导则输变电》（HJ24-2020）中交流架空输电线路工频电场强度和工频磁感应强度的预测模式，本工程电磁环境敏感目标的预测结果见表8。预测结果表明，本项目电磁环境敏感点的工频电场强度、工频磁感应强度能满足《电磁环境控制限值》（GB8702-2004）规定的4000V/m和100μT公众曝露控制限值要求。表8架空线路电磁环境敏感目标影响预测结果预测点位线路架设形式（m）导线对地高度（m）预测点高度（m）最大工频电场强度（kV/m）最大工频磁感应强度（μT）郴州市桂阳县和平镇上苍村居民点220kV单回线路（15mm冰区）单回路直线塔HA31D-ZBC22×JL3/G1A-630/45分裂数2，分裂间距0.5m约23m约29m1.5（1F）0.2932.267社门村居民点约19m约28m1.5（1F）0.4293.3585（2F）0.4393.864约33m约28m1.5（1F）0.8717.564塘边村居民点约13m约32m1.5（1F）0.3863.433约8m约32m1.5（1F）0.3693.915水盘村居民点约25m约30m1.5（1F）0.3302.526综上所述，评价范围内各电磁环境保护目标的工频电场强度、工频磁感应强度均能满足《电磁环境控制限值》（GB8702-2004）中4000V/m和100μT的公众曝露控制限值要求。4电磁环境影响评价结论（1）线路经过非居民区根据模式预测结果，本工程投运后线路下方地面1.5m高处的工频电场强度、工频磁感应强度分别能满足《电磁环境控制限值》（GB8702-2014）中4000V/m、100μT的公众曝露控制限值要求，也可满足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、道路等场所电场强度控制限值10kV/m的要求。且随着导线对地距离的增加，工频电场强度、工频磁感应强度整体呈衰减趋势。（2）线路经过居民区线路经过居民区，本工程单回架空线路地面上方1.5m、5m处最大工频电场强度、工频磁感应强度分别能