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　2015年9月28日，国神集团神东电力河曲发电公司2×350兆瓦低热值煤发电工程1号机组顺利通过168小时满负荷试运行并正式投入商业运营中。在项目1号机组进入168小时试运期间，机组负荷率达99.9%，机组运行平稳，各项指标优良，达到山西省超低排放指标。
　　该项目是神华集团投产的首台、世界上投产的第2台350兆瓦超临界循环流化床机组，对循环流化床技术的可持续发展具有里程碑意义。
　　工程概况
　　该项目属山西省重点建设项目，以资源综合利用、发展循环经济为标志，充分利用当地煤矸石、煤泥等低热值煤及城市中水，具有节能、节水、环保等特点。该项目DCS系统包括两台主机、公用、辅网，实现全厂一体化控制。
单元机组和公用系统I/O点：
　　总计点数：6945*2+970=14860点(两台机组及公用点数)
　　系统配置
　　神华神东河曲工程包括#1机组和#2机组，其分散控制系统的控制范围包括单元机组、机组脱硫系统、辅网系统和公用系统。整个DCS系统按照HOLLiAS MACS的网络结构划分为#1机组、#2机组脱硫以及公用系统共四个域，并且与电厂管理信息系统(MIS)、监控信息系统(SIS)等留有通讯接口。
　　和利时控制系统具有模拟量控制(MCS)、顺序控制(SCS)、锅炉安全监视保护(FSSS)、电气控制(ECS)、数据采集(DAS)、汽机旁路控制(BPC)等系统功能，以满足各种运行工况的要求，确保机组安全、高效运行。
　　DCS控制系统硬件配置示意图(单元机组和公用系统)如下：
　DCS网络结构
　　HOLLiAS MACS分散控制系统，可以划分为监控层和控制层两个层次。监控层的设备主要包括工程师站、操作员站、通讯站等;控制层的设备主要包括实现各种控制功能的控制站(包括远程控制站和远程I/O站)。工程师站、操作员站和通讯站等与系统服务器的互连，通过监控网(M-NET)使用以太网协议通讯，通讯速率100Mbps。控制站与系统服务器的互连，通过系统网(S-NET)使用HSIE网络协议，通讯速率10/100M自适应。HSIE网络协议基于可靠的工业以太网通讯协议，信息传输实时、可靠。控制站内部的数据通讯网络称为控制网(C-NET)，控制网采用Profibus现场总线。使用Profibus-DP协议，通讯速率500Kbps，实现控制器与过程I/O模块的通讯，符合IEC61158国际标准。所有支持Profibus-DP协议的控制器(如PLC)和智能仪表只要提供相应的GSD设备文件，都能作为主控的从站与HOLLIAS MACS系统进行通讯。

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