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| 高寒地区330 kV输电线路电磁环境水平分析及监测评价 |
| Analysis and Evaluation of Electromagnetic Environment Level of 330 kV Transmission Lines in Alpine Region |
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| DOI： |
| 中文关键词: 电磁环境 输电线路 高寒地区 工频电场强度 工频磁感应强度 |
| 英文关键词: Electromagnetic environment Transmission line Alpine region Power frequency electric field intensity Power frequency magnetic induction intensity |
| 基金项目:国家重点研发计划基金资助项目（2018YFE0205100）；甘肃省科技计划基金资助项目（22JR11RA309） |
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| 中文摘要: |
| 为掌握甘肃高寒地区典型330 kV输电线路电磁环境水平特征，选取某输电线路单回、双回部分进行理论计算，分析当导线距地面85 m及16 m时工频电场强度、工频磁感应强度分布趋势，给出满足《电磁环境控制限值》（GB 8702—2014）要求的最低导线对地高度。按照输电线路工程运行后实际工况开展电磁环境监测，并与西北区域低海拔地区相同参数输电线路电磁环境水平进行对比。结果表明：电磁环境水平实际测量结果低于理论计算结果，分布趋势具有一致性；在相同参数输电线路条件下，电磁环境水平高寒地区高于低海拔地区，电磁环境水平与线路所处自然环境因素有关。 |
| 英文摘要: |
| In order to grasp the electromagnetic environment level characteristics of typical 330 kV transmission lines in alpine region of Gansu， theoretical calculation was conducted on single and double circuit parts of a certain transmission line for analyzing the distribution trends of power frequency electric field intensity and power frequency magnetic induction intensity when the wire was 85 m and 16 m above the ground， and obtaining the minimum height of wire to ground that met the requirements of “Controlling limits for electromagnetic environment”（GB 8702—2014）. The electromagnetic environment level of transmission lines was monitored under actual operating conditions， and compared with that of the transmission lines with the same parameters in the low altitude areas of the northwest region. The results showed that the actual measurements of the electromagnetic environment level were lower than theoretical calculation results， but the distribution trends were consistent. Under the same transmission line parameters， the electromagnetic environment level in alphine region was higher than that in low altitude areas. The electromagnetic environment level was related to natural environmental factors where the transmission lines were located. |
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