安全仪表系统(SIS)后备冗余技术叠加双环冗余技术的研究与应用
Research and Application of Backup Redundancy Technology for Safety Instrumented Systems(SIS)Combined with Dual Loop Redundancy Technology
崔强1
作者信息
- 1. 国家管网集团北海液化天然气有限责任公司 广西北海 536000
- 折叠
摘要
某LNG接收站DCS/SIS系统投用两年以来多次发生系统故障引发现场联锁,造成装置停车、生产波动.由于该接收站DCS/SIS系统通讯共用一个环网,整个网络架构采用单环网冗余结构,SIS系统安全通讯未完全独立.当网络架构中一个环节出现问题时,两个系统同时失效,SIS系统安全功能得不到有效发挥.本研究对系统进行重构后,将SIS系统安全通讯部分单独剥离,环网内部具有后备冗余自动切换的能力,同时外部形成内外双环网冗余.该系统的优化弥补了 DCS/SIS系统共用环网在使用中遇到的各种缺陷,解决了该LNG接收站联锁保护系统不稳定的重大难题.
Abstract
Since the DCS/SIS system of a certain LNG receiving station was put into operation for two years,there have been multiple system failures that have caused on-site interlocking,resulting in device shutdown and production fluctuations.Because the DCS/SIS system communication at the receiving sta-tion shares a ring network,the entire network archi-tecture adopts a single ring network redundancy struc-ture,and the SIS system's secure communication is not completely independent.When a problem occurs in one link of the network architecture,both systems fail simultaneously,and the security function of the SIS system cannot be effectively utilized.After the system was restructured in this study,the security communication part of the SIS system was separated,and the internal ring network had the ability to auto-matically switch backup redundancy.At the same time,external dual ring network redundancy was formed.The optimization of this system has made up for various defects encountered in the use of the shared ring network of the DCS/SIS system,and solved the major problem of instability in the interloc-king protection system of the LNG receiving station.
关键词
安全仪表系统(SIS)/后备冗余/叠加/双环冗余/技术/研究/应用Key words
Safety Instrumented System(SIS)/backup redundancy/stacking/dual loop redundan-cy/technical research/application引用本文复制引用
基金项目
国家石油天然气管网集团有限公司科学研究与技术开发项目(CLZB 202302)
国家自然科学基金青年基金(52201064)
出版年
2024
NETL
NSTL
万方数据