基于反行波能量熵比较的母线保护新原理

董星星; 吴浩

董星星,吴浩.基于反行波能量熵比较的母线保护新原理[J].电测与仪表,2018,55(12):07-14.
dongxingxing,wuhao.A new principle of busbar protection based on backward traveling wave energy entropy comparison[J].Electrical Measurement & Instrumentation,2018,55(12):07-14.

基于反行波能量熵比较的母线保护新原理

A new principle of busbar protection based on backward traveling wave energy entropy comparison

DOI：

中文关键词: 母线保护反行波 S变换能量熵故障识别

英文关键词:bus protection, backward traveling wave, S-transform, energy entropy, fault identification

基金项目:国家自然科学基金项目（重点项目）；人工智能四川省重点实验室项目

作者中文名	作者英文名	单位
董星星	dongxingxing	四川理工学院
吴浩	wuhao	四川理工学院

摘要点击次数: 1551

中文摘要:

提出了一种基于反行波能量熵比较的快速母线保护新算法。通过对故障反向行波进行S变换求取能量熵，分析母线各条关联线路能量熵变化特征构建保护判据。当母线内部故障时，各条关联线路反行波S变换能量熵相同；母线外部故障时，故障线路与非故障线路的能量熵存在较大差异，由此建立能量熵比值判据识别母线区内外故障。仿真结果表明，所提母线保护方法能灵敏、可靠的识别母线区内外故障。

英文摘要:

A new fast bus protection algorithm based on inverse traveling wave energy entropy is proposed. Based on the S-transform of the backward traveling wave, the energy entropy is obtained and the protection criterion is analyzed. When the bus internal fault occurs, the energy entropy of the inverse wave s transform is the same, and the energy entropy of the fault line and the non fault line is different, and the energy entropy ratio criterion is established to identify the internal and external faults of the bus area. The simulation results show that the busbar protection method can be sensitive and reliable to identify the faults inside and outside the busbar area.

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