电力系统暂态数据交换 （COMTRADE）共用格式 i 目 录 电力系统暂态数据交换（COMTRADE）共用格式..................................................................... 2 1 范围 ........................................................................................................................................... 2 2 定义 ........................................................................................................................................... 2 2.1 数据表示 Data Representation ........................................................................... 2 2.1.1 二进制数据 Binary Data ............................................................................ 2 2.1.2 ASCII（美国国家信息交换标准代码）数据 ASCII（AmericanNational Standard Code for Information Interchange）Data .......................................................... 2 2.2 必需的/非必需的 Critical/Non-Critical ................................................................. 2 2.3 一次/二次比 Primary /secondary Ratios ............................................................. 2 2.4 浮点记数法 Floating Point Notation ............................................................... 3 2.5 文件范畴Categories of Files .............................................................................. 4 2.5.1 可执行文件 Ex ecu table Files ..................................................................... 4 2.5.2 文本文件 Tex t Files .................................................................................... 4 2.5.3 数据文件Data Files....................................................................................... 4 2.6 文件的存取方法Methods of Accessing data in files ................................ 5 2.6.1 随机存取文件 Random Access Files ...................................................... 5 2.6.2 顺序文件 Seqnential Files .........................................................
