COMTRADE容错解析算法

A Fault-tolerance Parsing Algorithm of COMTRADE

针对当前电力系统内由于电力系统暂态数据转换通用格式(COMTRADE)标准不一致,远程传输产生乱码、数据不全等原因造成的解析困难,研究了一种可最大限度地正确解析COMTRADE文件的算法。此算法包含错误预分析和容错解析2部分;错误预分析部分通过跳行解析并验证的方法,逐一寻找能影响正确解析的各种错误,最终形成一个错误信息表;容错解析部分采用查询错误信息表和COMTRADE外延字符表,以提前解析数据文件和获取校验信息的方法,实现了可靠的COMTRADE文件容错解析。大量的现场数据测试结果表明该算法的实用性和可靠性,为各种第三方电力系统暂态数据分析软件的研发提供了技术参考。

To solve the parsing problems due to the difference among COMTRADE standards, unreadable code in remote transmission and incompleteness of data in the power system, this paper presents an algorithm that can correctly parse the file in the COMTRADE format to the greatest extent. The algorithm includes the error pre-analysis part and the fault-tolerance parsing part. With the method of line-skipping parsing and validation, the error pre-analysis part can find all sorts of error that can influence the proper parsing and ultimately form an error information table. By inquiring the error information table and COMTRADE extension character table to parse the data file and obtain the validation information in advance, the faulttolerance parsing part will reliably realize fault-tolerance parsing of file in the COMTRADE format. Plentiful testing results of field data show that the new algorithm is practical and reliable, which can provide technical references to the development of any third-party transient data analysis software in a power system.