公开(公告)号：US20030174074A1

公开(公告)日：2003-09-18

申请号：US10099209

申请日：2002-03-14

Applicant: ABB Inc.

Inventor： Thomas M. LoCasale ,  Joel A.B. Elston ,  Ismail I. Jouny

IPC: H03M007/00

CPC classification number: H03M7/30 ,  H02H7/261

Abstract: Waveform information is transmitted from the ends of a protection zone by first compressing the information using a lossy compression technique such as wavelets and then compressing the lossy compressed waveform information using a loss-less compression technique such as the Burrows-Wheeler transform. Status information is transmitted from the ends of the protection zone by compressing that information using the loss-less technique. The time for transmission can be less than, equal to or greater than the time for one cycle of the power line frequency.

Abstract translation: 通过首先使用诸如小波之类的有损压缩技术对信息进行压缩，然后使用诸如Burrows-Wheeler变换的无损压缩技术压缩有损的压缩波形信息，从保护区的端部发送波形信息。 通过使用无损技术压缩该信息，从保护区的端部发送状态信息。 传输时间可以小于，等于或大于电力线频率的一个周期的时间。