Boundary Protection of HVDC Transmission Lines Based on Generalized S-transform

被引：0
|
作者：
Zhang Y. [1 ]
Li D. [1 ]
Zhang S. [1 ]
Li J. [1 ]
Yin J. [1 ]
机构：
[1] Key Laboratory of Smart Grid of Ministry of Education, Tianjin University, Tianjin
来源：
Gaodianya Jishu/High Voltage Engineering | 2018年 / 44卷 / 10期
关键词：
Boundary protection; Characteristic harmonic; Generalized S-transform; HVDC transmission lines; Time-frequency characteristic;
D O I：
10.13336/j.1003-6520.hve.20180925010
中图分类号：
学科分类号：
摘要：
According to specific signal input and the desired frequency extraction, generalized S-transform can freely adapt Gaussian window function to obtain the optimal time-frequency resolution and the characteristics of different frequency components at different time slots by one calculation and extract 12/24/36th characteristic harmonic at different time. We studied a voltage characteristic harmonic based boundary protection principle for HVDC transmission lines. The operating criterion was proposed, the setting principle was given, and the operating scheme was designed. Through analyzing whether the average voltage characteristic harmonic on the HVDC transmission lines was higher than the setting value during the fault, it could be determined whether the fault was on the line. The fault pole was selected by comparing the voltage characteristic harmonic of two poles. The results from theoretical analysis and simulation demonstrate that the proposed protection scheme can correctly distinguish fault from inside or outside and select the fault pole, which is suitable for the backup protection of HVDC transmission lines. © 2018, High Voltage Engineering Editorial Department of CEPRI. All right reserved.
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页码：3197 / 3206
页数：9
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