在核电站的光纤通信网络中,冗余设计能保障系统可靠性和数据传输稳定性。软件定义网络(Software Defined Network,SDN)技术将控制平面与数据平面分离,提供了高度灵活的网络管理能力。深入探讨了SDN技术在核电站冗余光纤通信网络中的应用...在核电站的光纤通信网络中,冗余设计能保障系统可靠性和数据传输稳定性。软件定义网络(Software Defined Network,SDN)技术将控制平面与数据平面分离,提供了高度灵活的网络管理能力。深入探讨了SDN技术在核电站冗余光纤通信网络中的应用,阐述SDN技术的基本原理,并设计核电站光纤通信组网方案。同时,详细分析了OpenFlow交换机结构、简单网络管理协议(Simple Network Management Protocol,SNMP)以及集群技术SDN控制方案对网络性能的影响。最后,通过实验验证基于SDN技术的网络在故障恢复、流量调度、资源利用方面的优势。展开更多
This paper deals with an integration of directly measured electrical parameters with data acquired by data communication from protections and terminals into an advanced monitoring system. Based on the periodic test, t...This paper deals with an integration of directly measured electrical parameters with data acquired by data communication from protections and terminals into an advanced monitoring system. Based on the periodic test, the authors of this paper present the possibility of an extended evaluation and more accurate analysis of transient and failure events. For periodical testing, as implemented during the commissioning of power plants in the Czech Republic, a monitoring system of electrical equipment has been used, to record the courses of important electrical parameters and thus, proving the proper functioning of complex technological systems in various operation modes. Data from monitoring system were used to prove the successful results of the test or as a base data for further analysis of failures. The monitoring system has proved itself as a very useful device also when recording unexpected failure events, the cause of which was very quickly and accurately detected by the follow-up analysis. Initially, only the voltage and current data from measuring transformers, analogue transducers and contact relays were used as input data for the monitoring system. After the implementation of new digital protection technology and controlling terminals with inner data recorder, the data from digital devices could be also utilized for the monitoring system.展开更多
文摘This paper deals with an integration of directly measured electrical parameters with data acquired by data communication from protections and terminals into an advanced monitoring system. Based on the periodic test, the authors of this paper present the possibility of an extended evaluation and more accurate analysis of transient and failure events. For periodical testing, as implemented during the commissioning of power plants in the Czech Republic, a monitoring system of electrical equipment has been used, to record the courses of important electrical parameters and thus, proving the proper functioning of complex technological systems in various operation modes. Data from monitoring system were used to prove the successful results of the test or as a base data for further analysis of failures. The monitoring system has proved itself as a very useful device also when recording unexpected failure events, the cause of which was very quickly and accurately detected by the follow-up analysis. Initially, only the voltage and current data from measuring transformers, analogue transducers and contact relays were used as input data for the monitoring system. After the implementation of new digital protection technology and controlling terminals with inner data recorder, the data from digital devices could be also utilized for the monitoring system.
