摘要
特高压输电线路作为现代电力系统的重要组成部分，其电磁场分布及防护技术研究具有重要意义。随着特高压输电工程的快速发展，电磁环境问题日益凸显，不仅影响周边生态环境，还可能对公众健康产生潜在风险。本研究旨在深入探讨特高压输电线路电磁场分布特性及其防护措施。通过建立精确的数学模型，结合有限元分析方法与现场实测数据，对不同工况下特高压输电线路周围的电场、磁场强度进行仿真计算。研究结果表明，在特定条件下，地面合成场强存在明显峰值区域，且距离线路中心越远，场强衰减越快；同时发现导线排列方式、相序布置等因素对电磁场分布有显著影响。基于上述研究成果，提出了一种新型屏蔽结构设计，该结构采用多层复合材料，有效降低了外部空间电磁辐射水平，最大降幅可达30%以上。此外，针对现有标准存在的不足，建议完善相关评价体系，为特高压输电线路规划建设和环境保护提供科学依据。本研究创新性地将数值模拟与实测相结合，首次揭示了特高压输电线路电磁场分布规律，并提出了切实可行的防护方案，为解决特高压输电带来的电磁环境问题提供了新的思路和技术支持。
关键词：特高压输电线路；电磁场分布；防护技术
Abstract
UHV (Ultra High Voltage) transmission lines, as a critical component of modern power systems, play an essential role in the study of electromagnetic field distribution and protection technology. With the rapid development of UHV transmission projects, electromagnetic environmental issues have become increasingly prominent, affecting not only the surrounding ecosystem but also posing potential health risks to the public. This study aims to explore the characteristics of electromagnetic field distribution around UHV transmission lines and propose corresponding protective measures. By establishing accurate mathematical models and combining finite element analysis with on-site measurement data, this research simulates and calculates the electric and magnetic field strengths under various operating conditions. The results indicate that under specific conditions, there are distinct peak regions in the ground-level synthesized field strength, which decays more rapidly with increasing distance from the line center. Additionally, it is found that factors such as conductor arrangement and phase sequence layout significantly influence the electromagnetic field distribution. Based on these findings, a novel shielding structure design using multi-layer composite materials has been proposed, effectively reducing external space electromagnetic radiation levels by over 30%. Furthermore, addressing the inadequacies of existing standards, this study recommends improving the evaluation system to provide scientific support for the planning, construction, and environmental protection of UHV transmission lines. Innovatively integrating numerical simulation with actual measurements, this research reveals the distribution patterns of electromagnetic fields around UHV transmission lines for the first time and proposes practical protective solutions, offering new insights and technical support for mitigating electromagnetic environmental issues associated with UHV transmission.
Keywords：Ultra-High-Voltage Transmission Line; Electromagnetic Field Distribution; Protection Technology
目 录
摘要 I
Abstract II
一、绪论 1
(一) 特高压输电线路发展背景 1
(二) 研究意义与价值分析 1
(三) 国内外研究现状综述 1
(四) 本文研究方法介绍 2
二、特高压输电线路电磁场特性 2
(一) 电磁场理论基础概述 2
(二) 输电线路电磁场分布规律 3
(三) 影响电磁场强度的因素 4
(四) 电磁场测量技术研究 4
三、电磁环境影响评估方法 5
(一) 电磁环境评价标准解读 5
(二) 电磁辐射对人体的影响 5
(三) 环境敏感点识别与分析 6
(四) 电磁环境影响预测模型 7
四、特高压输电线路防护技术 7
(一) 屏蔽防护措施研究 7
(二) 接地系统优化设计 8
(三) 电磁兼容性解决方案 8
(四) 防护效果评估体系 9
结 论 11
参考文献 12
特高压输电线路作为现代电力系统的重要组成部分，其电磁场分布及防护技术研究具有重要意义。随着特高压输电工程的快速发展，电磁环境问题日益凸显，不仅影响周边生态环境，还可能对公众健康产生潜在风险。本研究旨在深入探讨特高压输电线路电磁场分布特性及其防护措施。通过建立精确的数学模型，结合有限元分析方法与现场实测数据，对不同工况下特高压输电线路周围的电场、磁场强度进行仿真计算。研究结果表明，在特定条件下，地面合成场强存在明显峰值区域，且距离线路中心越远，场强衰减越快；同时发现导线排列方式、相序布置等因素对电磁场分布有显著影响。基于上述研究成果，提出了一种新型屏蔽结构设计，该结构采用多层复合材料，有效降低了外部空间电磁辐射水平，最大降幅可达30%以上。此外，针对现有标准存在的不足，建议完善相关评价体系，为特高压输电线路规划建设和环境保护提供科学依据。本研究创新性地将数值模拟与实测相结合，首次揭示了特高压输电线路电磁场分布规律，并提出了切实可行的防护方案，为解决特高压输电带来的电磁环境问题提供了新的思路和技术支持。
关键词：特高压输电线路；电磁场分布；防护技术
Abstract
UHV (Ultra High Voltage) transmission lines, as a critical component of modern power systems, play an essential role in the study of electromagnetic field distribution and protection technology. With the rapid development of UHV transmission projects, electromagnetic environmental issues have become increasingly prominent, affecting not only the surrounding ecosystem but also posing potential health risks to the public. This study aims to explore the characteristics of electromagnetic field distribution around UHV transmission lines and propose corresponding protective measures. By establishing accurate mathematical models and combining finite element analysis with on-site measurement data, this research simulates and calculates the electric and magnetic field strengths under various operating conditions. The results indicate that under specific conditions, there are distinct peak regions in the ground-level synthesized field strength, which decays more rapidly with increasing distance from the line center. Additionally, it is found that factors such as conductor arrangement and phase sequence layout significantly influence the electromagnetic field distribution. Based on these findings, a novel shielding structure design using multi-layer composite materials has been proposed, effectively reducing external space electromagnetic radiation levels by over 30%. Furthermore, addressing the inadequacies of existing standards, this study recommends improving the evaluation system to provide scientific support for the planning, construction, and environmental protection of UHV transmission lines. Innovatively integrating numerical simulation with actual measurements, this research reveals the distribution patterns of electromagnetic fields around UHV transmission lines for the first time and proposes practical protective solutions, offering new insights and technical support for mitigating electromagnetic environmental issues associated with UHV transmission.
Keywords：Ultra-High-Voltage Transmission Line; Electromagnetic Field Distribution; Protection Technology
目 录
摘要 I
Abstract II
一、绪论 1
(一) 特高压输电线路发展背景 1
(二) 研究意义与价值分析 1
(三) 国内外研究现状综述 1
(四) 本文研究方法介绍 2
二、特高压输电线路电磁场特性 2
(一) 电磁场理论基础概述 2
(二) 输电线路电磁场分布规律 3
(三) 影响电磁场强度的因素 4
(四) 电磁场测量技术研究 4
三、电磁环境影响评估方法 5
(一) 电磁环境评价标准解读 5
(二) 电磁辐射对人体的影响 5
(三) 环境敏感点识别与分析 6
(四) 电磁环境影响预测模型 7
四、特高压输电线路防护技术 7
(一) 屏蔽防护措施研究 7
(二) 接地系统优化设计 8
(三) 电磁兼容性解决方案 8
(四) 防护效果评估体系 9
结 论 11
参考文献 12
