摘要
时间统一是分布式控制系统(DCS)中至关重要的部分。在DCS系统的长时间运行中,可能会发生GPS时钟源的网线光口组件老化、B码线连接掉落或者接触不良、GPS时钟源硬件故障等等故障类型。本文提出了DCS时间同步系统退防策略,在出现故障的情况下,仍保证系统中在线设备的时间一致性。
Time synchronization is an important part of distributed control system (DCS). In the long-term operation of DCS system, there may be some types of faults, such as aging of network optical port components of GPS clock source, dropping or poor contact of B code line connection, hardware failure of GPS clock source, etc. In this paper, a defense strategy for DCS time synchronization system is proposed. In case of failure, the time consistency of on-line equipment in the system is guaranteed.
作者
张颖颖
余冠华
郭欧杰
ZHANG Ying-ying;YU Guan-hua;GUO Ou-jie(China Nuclear Control System Engineering CO,LTD,Beijing 102488,China)
出处
《电脑知识与技术》
2019年第4X期49-50,共2页
Computer Knowledge and Technology
关键词
DCS
时钟源
退防
故障量化
基准控制器
DCS
Clock Source
Defense
Fault Quantization
Benchmark Controller
