CAJ | 학술논문

本文根据电力系统故障录波文件的特点，提出一种全新的、无损的、压缩率高的数据压缩的方法。该方案根据comtrade的特点，将需要压缩的内容解析为数据基本信息、模拟通道数据和状态量通道数据三个部分，根据每部分自身的数据特点分别用不同的数据压缩算法进行相应的数据预处理。根据预处理之后的数据的特点和字典压缩的分析能力，将预处理压缩数据再进行一次字典压缩，大大提高了数据压缩率。与该压缩方法对应有一套特定的解压缩方法，该解压缩的流程与压缩流程相反，是一个信号重构的过程，解压后最终得到的文件既是压缩之前的源文件，数据信息完全没有损失。本算法保证了故障录波文件的无损性和高压缩率，有利于故障录波数据的储存、传输以及数据重现分析。
본문근거전력계통고장록파문건적특점，제출일충전신적、무손적、압축솔고적수거압축적방법。해방안근거comtrade적특점，장수요압축적내용해석위수거기본신식、모의통도수거화상태량통도수거삼개부분，근거매부분자신적수거특점분별용불동적수거압축산법진행상응적수거예처리。근거예처리지후적수거적특점화자전압축적분석능력，장예처리압축수거재진행일차자전압축，대대제고료수거압축솔。여해압축방법대응유일투특정적해압축방법，해해압축적류정여압축류정상반，시일개신호중구적과정，해압후최종득도적문건기시압축지전적원문건，수거신식완전몰유손실。본산법보증료고장록파문건적무손성화고압축솔，유리우고장록파수거적저존、전수이급수거중현분석。
In this paper, based on the characteristics of electric power system fault wave record file, put forward a kind of brand-new, nondestructive, high compression ratio method of data compression. Through the compression before the comtrade files can be divided into three parts:Basic information data , analog and digital data, according to the characteristics of each part of your own data with different data compression algorithm to the corresponding data preprocessing, experiments and comparison analysis, so as to choose better compression performance combination plan, improve the compression efficiency. According to the characteristics of the data after pretreatment and dictionary compression analysis ability, the pretreatment of compression again compressed data dictionary, data compression ratio was improved greatly.In contrast to the compression process,There is a specific set of decompression of the decompression process,it is a process of reconstructing signal, the resulting files after decompression is not only the source files before compression, data information no damage at al .The algorithm guarantees the fault wave record files intact and high compression rate,andadvantageous to the fault wave record data storage, transmission and data analysis.