摘 要
随着能源需求的日益增长和电力系统的日趋复杂，高压直流（HVDC）输电技术因其长距离、大容量的电能传输优势而备受关注。本文全面综述了高压直流输电系统的基本概念、技术参数、基本原理、控制策略及保护策略，旨在深入理解和分析高压直流输电技术在电力传输领域的应用及其关键技术问题。文章首先介绍了高压直流输电的基本概念和主要技术参数，包括输电电压等级、输电容量、输电距离以及系统效率和可靠性等关键指标，为后续探讨奠定了理论基础。随后，详细阐述了高压直流输电系统的基本原理，包括其物理基础、系统组成及运行特性，重点分析了换流站、直流输电线路以及控制和保护系统在系统中的作用和相互关联。在控制策略方面，文章深入探讨了高压直流输电系统的功率调度与管理、电流与电压控制、故障处理与保护以及系统优化与协调等关键环节，揭示了如何通过科学的控制策略实现系统的稳定运行和高效传输。同时，针对高压直流输电系统在运行过程中可能遇到的各种故障和异常情况，文章还详细阐述了换流站保护、直流输电线路保护、极保护与系统安全以及控制与保护协调等保护策略，确保系统在面对突发状况时能够迅速响应并有效应对。最后，文章总结了高压直流输电系统的技术优势和应用前景，强调了其在远距离、大容量电力传输中的重要作用，并对未来高压直流输电技术的发展方向进行了展望。通过本文的研究，可以为相关领域的技术人员提供参考和借鉴，推动高压直流输电技术的进一步发展和应用。
关键词：高压直流输电；控制策略；系统稳定性
Abstract
With the increasing demand for energy and the growing complexity of power systems, high-voltage direct current (HVDC) transmission technology has attracted much attention due to its advantages of long-distance and large capacity power transmission. This article comprehensively summarizes the basic concepts, technical parameters, basic principles, control strategies, and protection strategies of high-voltage direct current transmission systems, aiming to deepen the understanding and analysis of the application of high-voltage direct current transmission technology in the field of power transmission and its key technical issues. The article first introduces the basic concepts and main technical parameters of high-voltage direct current transmission, including key indicators such as transmission voltage level, transmission capacity, transmission distance, system efficiency and reliability, laying a theoretical foundation for subsequent discussions. Subsequently, the basic principles of the high-voltage direct current transmission system were elaborated, including its physical foundation, system composition, and operational characteristics. The focus was on analyzing the roles and interrelationships of converter stations, direct current transmission lines, and control and protection systems in the system. In terms of control strategies, the article delves into key aspects of high-voltage direct current transmission systems, such as power scheduling and management, current and voltage control, fault handling and protection, and system optimization and coordination. It reveals how to achieve stable operation and efficient transmission of the system through scientific control strategies. At the same time, in response to various faults and abnormal situations that the high-voltage direct current transmission system may encounter during operation, pole protection and system safety.Finally, the article summarizes the technical advantages and application prospects of high-voltage direct current transmission systems, emphasizes their important role in long-distance and high-capacity power transmission, and looks forward to the future development direction of high-voltage direct current transmission technology. Through the research in this article, it can provide reference and inspiration for technical personnel in related fields, and promote the further development and application of high-voltage direct current transmission technology.
Keywords： High voltage direct current transmission; Control strategy; system stability
目 录
摘要 I
Abstract II
一、引言 1
二、高压直流输电系统概述 2
（一）高压直流输电的基本概念 2
（二）系统的主要技术参数 2
三、高压直流输电系统的基本原理 5
（一）高压直流输电的物理基础 5
（二）高压直流输电系统的组成 5
（三）高压直流输电系统的运行特性 6
四、高压直流输电系统的控制策略 8
（一）功率调度与管理 8
（二）电流与电压控制 8
（三）故障处理与保护 8
（四）系统优化与协调 9
五、高压直流输电系统的保护策略 10
（一）换流站保护 10
（二）直流输电线路保护 10
（三）极保护与系统安全 10
（四）控制与保护协调 11
结 论 12
参考文献 13
