摘要
针对北京市轨道交通3号线全自动运行模式下的高可靠性要求,对TTAS(行车综合自动化系统)主用和备用的运营控制中心濒据同步进行方案设计。对传统的TIAS主备中心数据在完整性和一致性上存在的问题进行剖析。结合全自动运行TIAS的实际情况,确认主用中心或者备用中心内部采用ORACLE RAC(数据库的实时应用集群)技术实现历史数据的唯一性,保证数据来源可靠;在主用中心和备用中心间通过数据库层面,使用ORACLE数据库的ADG(主从数据复制)技术来实现主备中心数据的一致性。通过这两种方式的结合,确保全自动运行模式下TIAS主备中心的数据一致,极大地提升了HAS系统的可用性。
According to the high reliability requirements for Bering rail transit Line 3 fully automatic operation(FAO)mode,a synchronous design scheme for the main and backup center data of train integrated automation system(TIAS)is conducted,the data integrity and consistency of the traditional TIAS system main and backup centers are analyzed.Combined with the actual situation of TIAS in FAO mode,it is confirmed that Oracle RAC(real application clusters)technology is adopted in the main and backup centers to realize the uniqueness of historical data and ensure the reliability.The active data guard(ADG)technology of the Oracle database is used to achieve data consistency in the main and backup centers.Through the combination of the above two modes,the data consistency of the main and backup centers of TIAS system in FAO mode could be guaranteed,the availability of TIAS system be greatly improved.
作者
李冰
周映江
LI Bing;ZHOU Yingjiang(NARI Group Corporation(State Grid Electric Power Research Institute),210003,Nanj ing,China)
出处
《城市轨道交通研究》
北大核心
2019年第S02期31-34,共4页
Urban Mass Transit
