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首页> 外文期刊>Power Delivery, IEEE Transactions on >A New Whole-Line Quick-Action Protection Principle for HVDC Transmission Lines Using One-End Current
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A New Whole-Line Quick-Action Protection Principle for HVDC Transmission Lines Using One-End Current

机译：一种采用单端电流的高压直流输电线路全线速动保护新原理

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摘要

HVDC transmission systems have found wide applications in modern power systems and have produced a useful influence on the stability and security of power systems. The currently used protections for HVDC systems operate on the principles which have poor reliability and inadequate sensitivity. To overcome these problems, this paper presents a new whole-line quick-action protection principle for HVDC transmission lines. The proposed method, based on the boundary characteristics of the line, can distinguish internal faults from external ones using single-terminal current measurements only. The criterion of this protection has been formulated. Simulations on frequency-dependent parameter-line model and the field-recorded data of a 500-kV HVDC system show that this method is valid and feasible. The proposed protection, sound and clear in principle and easy to implement, can be expected to become a primary protection of HVDC transmission.
机译：高压直流输电系统已在现代电力系统中得到广泛应用，并且对电力系统的稳定性和安全性产生了有益的影响。当前用于HVDC系统的保护器以可靠性差且灵敏度不足的原理运行。为克服这些问题，本文提出了一种新的高压直流输电线路全线速动保护原理。所提出的方法基于线路的边界特性，仅使用单端电流测量就可以将内部故障与外部故障区分开。已经制定了这种保护的标准。通过对频率相关的参数线模型和500 kV HVDC系统的现场记录数据进行仿真，结果表明该方法是有效可行的。所提出的保护原则上清晰明确且易于实施，有望成为高压直流输电的主要保护措施。

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