A novel line non-unit protection principle basedon HHT energy spectrum is proposed in the paper. Influnceof line trap and the bus-to-ground capacitance of thetransmission line to high frequency component of faulttraveling wave is analysised, energy of high- frequencycomponent of the traveling wave detected in internal area ismore than that of external area due to the hindrance of linetrap and bus-to-ground Capacitance. The differences betweeninternal and external faults are used in realizing theprotection. HHT is used to get energy spectrum, and theenergy spectrum is used to distinglish. the internal andexternal faults. ATP/EMTP simulation results Show that theprotection can act immediately, it can realize full lineprotection and can distinguish types of fault. It is an effectivenon-unit EHV transmission line Protection method.
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机译：本文提出了一种新型线路非单元保护原理的HHT能谱。分析了线阱的速度线阱和速率转移到过滤波的高频分量的基础电容，在内部区域中检测到的行波的高频频率的能量而不是外部区域由于线圈的阻碍和母线到地电容。间决和外部故障之间的差异用于实现保护。 HHT用于获得能谱，并且Asenergy频谱用于Distringlish。内外断层。 ATP / EMTP仿真结果表明，Protection可以立即采用，它可以实现完整的线路保护，可以区分故障类型。它是一种效果 - 单位EHV传输线保护方法。
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