并联电抗器输电线路中基于极化电流行波定向继电器的特性

Q1 Engineering

电力系统自动化 Pub Date : 2013-01-01 DOI:10.7500/AEPS20130328009

Li Ren, Xinzhou Dong, Shenxing Shi, Bin Wang, D. Bak

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引用次数: 0

摘要

传统的光纤电流差动保护不能直接应用于无补偿的并联电抗器输电线路。针对并联电抗器线路中使用的极化电流行波定向继电器，基于小波变换深入分析了行波通过并联电抗器的过程、并联电抗器的传输频域以及对极化电流行波定向继电器的影响。结果表明，有并联电抗器的线路不会影响暂态行波头的方向，也不会影响波频线的提取。因此，基于极化电流行波的定向继电器可以直接应用于带并联电抗器的输电线路。EMTP仿真和实际装置试验结果均表明，并联电抗器线路具有良好的保护特性。

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Characteristics of Polarized Current Travelling Wave-based Directional Relay in Transmission Lines with Shunt Reactors

It’s known that traditional fiber current differential protection cannot be directly applied to transmission lines with shunt reactors without compensation.In view of polarized current travelling wave-based directional relay used in lines with shunt reactors,an in-depth analysis is made of the process of travelling wave through shunt reactors,the transmission frequency domain with shunt reactors and the impact on polarized current travelling wave-based directional relay based on wavelet transform.The results show that lines with shunt reactors will not affect the direction of the transient traveling wave head nor the extraction of the wave-frequency line.Therefore,polarized current travelling wave-based directional relay can be directly applied to transmission lines with a shunt reactor.Both EMTP simulation and actual device test results show the excellent characteristics of the protection in lines with shunt reactors.

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来源期刊

电力系统自动化 Energy-Energy Engineering and Power Technology

CiteScore

8.20

自引率

0.00%

发文量

15032

期刊介绍： Founded in 1977, Power System Automation is a well-known journal in the discipline of electrical engineering in China. At present, it has been issued to all provinces, cities, autonomous regions, Hong Kong, Macao and Taiwan, and abroad to dozens of countries in North America, Europe and Asia-Pacific region, with a large number of readers at home and abroad. Power System Automation takes “based on China, facing the world, seeking truth and innovation, promoting scientific and technological progress in the field of electric power and energy” as the purpose of the journal, mainly for the professional and technical personnel, teachers and students engaged in scientific research, design, operation, testing, manufacturing, management and marketing in the electric power industry and higher education institutions as well as electric power users, and focuses on hotspots of the industry's development and the It focuses on the hot and difficult issues of the industry. It focuses on the hot and difficult issues of the industry, both academic and forward-looking, practical and oriented, and at the same time emphasizes and encourages technical exchanges of experiences, improvements and innovations from the front line of scientific research and production.