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摘要: |
高压输电线路发生故障后的暂态电压或电流分量中含比工频分量更多的故障信息,充分利用这一信息是构成具有绝对选择性单端无通信保护的前提,对目前基于暂态量的无通信保护的研究进行了对比和分析,并提出了目前基于暂态量的高压线路无通信保护的发展方向。 |
关键词: 无通信保护 暂态量 超高压输电线路 继电保护 |
DOI: |
分类号:TM773 |
基金项目:中华电力基金许继奖教金课题资助金 |
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Superpressure Power Transmission Line Non-Communication Protection Based on Transient Component |
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Abstract: |
During the fault period,transient component of fault current or voltage which consists of large amount of high frequency components is mainly due to the current travelling wave and nonlinear arc fault resistance at fault position.Moreover,it is the basis of constructing a new non communication protection through absolutely utilizing the fault information which is comprised in transient component of fault current or voltage.This paper explains all principles of transient protection and directs the way of non communication protection development. |
Key words: non communication protection,travelling wave,wavelets,transient component |