电流速断保护在高压输电线路中的应用研究 -电气工程及其自动化专业

摘要

电流速断保护作为电力系统中一种重要的继电保护方式，在高压输电线路中的应用具有重要意义。随着电力系统的不断发展，高压输电线路的规模逐渐扩大，其面临的故障类型也日益复杂多样，这对电流速断保护提出了更高的要求。本研究旨在深入探讨电流速断保护在高压输电线路中的应用效果，通过理论分析与实际案例相结合的方法，对不同类型的高压输电线路进行建模，基于现有电流速断保护原理，引入新的算法优化传统保护策略。研究结果表明，改进后的电流速断保护能够更准确地识别故障位置，缩短故障切除时间，提高保护动作的选择性和可靠性。特别是在处理复杂电网结构下的多点故障时，该方法展现出显著优势。此外，通过对多个实际工程案例的验证，证明了所提方法的有效性和实用性，为高压输电线路的安全稳定运行提供了有力保障，也为后续相关研究奠定了基础，主要贡献在于提出了一种适应现代复杂电网环境的电流速断保护优化方案，提升了电力系统的整体安全性与稳定性。

关键词：电流速断保护；高压输电线路；故障识别

Research on the application of current current break protection in high voltage transmission lines

ABSTRACT

Current current break protection is an important relay protection method in power system, and its application in high voltage transmission lines is of great significance. With the continuous development of power system, the scale of high-voltage transmission lines is gradually expanding, and the types of faults it faces are becoming more and more complex, which puts forward higher requirements for current current break protection. This study aims to deeply explore the application effect of current velocity break protection in high voltage transmission lines. Through the combination of theoretical analysis and practical cases, different types of high voltage transmission lines are modeled. Based on the existing current velocity break protection principle, new algorithms are introduced to optimize traditional protection strategies. The results show that the improved current velocity break protection can identify the fault location more accurately, shorten the time of fault removal, and improve the selectivity and reliability of the protection action. Especially when dealing with multi-point faults in complex power grid structure, this method shows significant advantages. In addition, through the verification of several practical engineering cases, the effectiveness and practicability of the proposed method are proved, which provides a strong guarantee for the safe and stable operation of high-voltage transmission lines, and also lays a foundation for subsequent relevant studies. The main contribution is to propose an optimization scheme for current flow rate break protection that ADAPTS to the modern complex power grid environment. Improve the overall safety and stability of the power system.

KEY WORDS：current velocity off protection; High-voltage transmission lines; Fault identification

第1章绪论 1

1.1 研究背景与意义 1

1.2 国内外研究现状 1

第2章电流速断保护原理分析 3

2.1 电流速断保护基本原理 3

2.2 保护定值整定原则 3

2.3 保护动作特性分析 4

第3章高压输电线路故障特性 5

3.1 常见故障类型统计 5

3.2 故障电流特征分析 5

3.3 故障定位方法研究 6