摘 要
高压直流输电系统作为现代电力传输的重要技术手段，因其高效、灵活和长距离输电能力而受到广泛关注。本文针对高压直流输电系统的控制与保护策略展开研究，旨在提升系统的稳定性和可靠性。研究基于现有直流输电技术的不足，提出了一种改进型双闭环控制方法，并结合智能算法优化控制器参数，以增强系统动态响应性能。同时，设计了一种基于故障特征提取的保护策略，通过引入深度学习模型对故障类型进行精准分类与定位，显著提高了保护动作的速动性和选择性。仿真结果表明，所提出的控制策略能够有效抑制系统暂态振荡，提高功率传输稳定性；而新型保护方案在多种复杂工况下均表现出优异的适应性。本研究的创新点在于将智能优化算法与传统控制理论相结合，实现了控制性能的全面提升，并通过数据驱动的方法改进了保护系统的灵敏度与准确性，为高压直流输电系统的实际应用提供了有价值的参考。研究成果对推动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；双闭环控制；智能优化算法；故障特征提取；深度学习保护策略
Abstract
High-voltage direct current (HVDC) transmission systems, as a crucial technological means in modern power transmission, have garnered significant attention due to their efficiency, flexibility, and capability for long-distance power delivery. This study focuses on the control and protection strategies of HVDC transmission systems with the aim of enhancing their stability and reliability. Based on the limitations of existing DC transmission technologies, an improved dual-loop control method is proposed, and intelligent algorithms are employed to optimize controller parameters, thereby strengthening the dynamic response performance of the system. Additionally, a protection strategy based on fault feature extraction is designed, incorporating deep learning models for precise classification and localization of fault types, which significantly improves the speed and selectivity of protective actions. Simulation results demonstrate that the proposed control strategy effectively suppresses transient oscillations in the system and enhances the stability of power transmission. Moreover, the novel protection scheme exhibits excellent adaptability under various complex operating conditions. The innovation of this research lies in the integration of intelligent optimization algorithms with traditional control theory, achieving a comprehensive improvement in control performance, and the application of data-driven methods to enhance the sensitivity and accuracy of protection systems. This study provides valuable references for the practical application of HVDC transmission systems and holds significant implications for advancing the development of HVDC transmission technology.
Keywords: High Voltage Direct Current Transmission；Dual Closed-loop Control；Intelligent Optimization Algorithm；Fault Feature Extraction；Deep Learning Protection Strategy
目 录
摘 要 I
Abstract II
一、绪论 1
（一）高压直流输电系统的研究背景与意义 1
（二）国内外研究现状分析 1
（三）本文研究方法与技术路线 2
二、高压直流输电系统的控制策略研究 2
（一）控制策略的基本原理与分类 2
（二）基于模糊控制的高压直流输电优化 3
（三）自适应控制在高压直流输电中的应用 3
三、高压直流输电系统的保护策略研究 4
（一）保护策略的核心需求与挑战 4
（二）故障检测与定位技术分析 4
（三）新型保护算法的设计与实现 5
四、控制与保护策略的协同优化研究 5
（一）协同优化的理论基础 5
（二）控制与保护的交互影响分析 6
（三）基于仿真平台的协同优化验证 6
结 论 7
致 谢 8
参考文献 9
