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| 摘要: |
| 阐述了发电厂厂用电监控系统ECS(Electric Control System)由简易到先进的3个发展阶段,即一对一的控制方式,电气监控纳入集散控制系统(DCS)的控制方式,全数字化的电气监控系统、并为DCS提供所需信息接口和控制接口的控制方式。分析表明DCS和ECS控制层之间的通信介质采用基于TCP/IP的以太网,通信规约采用IEC-104或OPC(OLE for Process Control)是合适的。实例说明了在600 MW等大机组电厂的工程设计中,只要优化好ECS系统的组网方案、选择恰当的通信规约,就能满足DCS通过ECS系统对参与顺序控制的电气量进行软采集和控制的高速要求。 |
| 关键词: 监控系统,用电监控系统,通信技术 |
| DOI： |
| 分类号:TM73 |
| 基金项目: |
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| Discussion on communication technology of power plant ECS |
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QI Jian-zhong
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| Abstract: |
| Three development stages of power plant ECS(Electric Control System) are introduced:one to one control,control integrated in DCS(Distributed Control System) and fully digitalized ECS with information and control interfaces to DCS.It is analyzed and proved applicable to adopt TCP/IP-based Ethernet for the communication between ECS and DCS,as well as IEC-104 or OPC(OLE for Process Control) as communication protocol.With an example of 600 MW power plant ECS design it is shown that,the requirement of DCS for high speed SCADA of ECS can be satisfied in sequential control,if the communication network of ECS is well optimized and the protocol appropriately selected. |
| Key words: control system,ECS,communication technology |
