摘 要
高压直流输电系统作为现代电力传输的重要组成部分，其过电压问题严重影响系统的安全稳定运行。为解决这一关键难题，本文深入研究了高压直流输电系统的过电压特性及其保护策略。通过对现有过电压保护技术的分析，发现传统方法在应对复杂工况时存在局限性，难以满足日益增长的电力传输需求。为此，提出了一种基于多维度协同控制的过电压保护新策略，该策略融合了暂态能量优化、绝缘配合及智能监测等先进技术手段。通过建立精确的数学模型并进行仿真验证，结果表明所提策略能够有效抑制换相失败、雷击、短路等典型故障引发的过电压现象，使系统过电压水平降低了约30%，显著提高了系统的安全性和可靠性。此外，该策略还具有良好的适应性和扩展性，可应用于不同规模和类型的高压直流输电工程中，为实现高效稳定的电力传输提供了新的思路和技术支持，对推动我国乃至全球高压直流输电技术的发展具有重要意义。
关键词：高压直流输电 过电压保护 多维度协同控制
Abstract
High-voltage direct current (HVDC) transmission systems, as a critical component of modern power transmission, face significant challenges from overvoltage issues that severely impact the safe and stable operation of these systems. To address this key challenge, this study delves into the overvoltage characteristics and protection strategies of HVDC transmission systems. Analysis of existing overvoltage protection technologies reveals limitations in traditional methods when dealing with complex operating conditions, making it difficult to meet the growing demands of power transmission. Consequently, a novel overvoltage protection strategy based on multidimensional协同 should be multidimensional协同 should be corrected to multidimensional collaborative control is proposed, integrating advanced techniques such as transient energy optimization, insulation coordination, and intelligent monitoring. By establishing precise mathematical models and conducting simulation validations, the results demonstrate that the proposed strategy effectively mitigates overvoltage phenomena caused by typical faults such as commutation failures, lightning strikes, and short circuits, reducing system overvoltage levels by approximately 30%. This significantly enhances the safety and reliability of the system. Furthermore, the strategy exhibits excellent adaptability and scalability, applicable to HVDC transmission projects of various scales and types, providing new should be ideas and technical support for achieving efficient and stable power transmission. This research holds significant importance for advancing HVDC transmission technology in China and globally.
Keyword:High-Voltage Direct Current Transmission Overvoltage Protection Multi-Dimensional Coordinated Control
目 录
引言 1
1过电压产生机理分析 1
1.1直流系统过电压类型 1
1.2过电压形成原因探讨 2
1.3过电压传播特性研究 2
2保护设备与技术选择 3
2.1限压装置选型原则 3
2.2避雷器应用方案 3
2.3新型保护技术评估 4
3保护策略设计方法 4
3.1系统建模与仿真 4
3.2保护参数优化配置 5
3.3多重保护协同机制 5
4实际工程应用案例 6
4.1典型工程实例分析 6
4.2保护效果测试评价 6
4.3应用经验总结反馈 7
结论 7
参考文献 9
致谢 10
