摘要
提出一种电压波形压缩记录技术。该技术基于"点相似"的数据处理方法,实时处理高速采样所得数据,对点相似的数据进行压缩,波形片段的等值频率越低,数据压缩效果越好。文章通过实测数据说明了压缩效果和波形复现效果,证明在应用该压缩存储技术后,记录设备存储容量的利用率提高了上千倍,这使得记录持续时间长并带有很高频率分量的暂态电压波形成为可能。该技术特别适用于波形等值频率随时间变化较大的情况,压缩存储技术也大幅度减轻了后期数据的处理量,并明显改善了测量仪器的显示效果。
A compressing storage technique for wave recording, which can process high-speed sampling data in real-time mode and compress the point-similar data, is proposed. The lower the equivalent frequency of wave segment, the better the effect of data compression. By means of measured data, the effects of data compression and waveform recurrence are demonstrated successfully and it is proved that using the proposed compressing storage technique the utilization rate of memory capacity in recording equipment can be raised up to thousand times, thus the proposed technique make it possible to record transient voltage waveform with very high frequency components and long time duration. The proposed technique is especially suitable to the condition that the equivalent frequency of the waveform severely varies with time and data processing burden in late stage is lightened considerably, besides, the display effect of measuring instrument is improved obviously.
出处
《电网技术》
EI
CSCD
北大核心
2009年第7期90-93,98,共5页
Power System Technology
关键词
电力系统
暂态电压
压缩存储
点相似
power system transient voltage compressing storage point-similarity
