.根据电厂生产工艺对计算机控制系统的要求及HS2000分布式控制系统的性能指标，结合现场实际情况，采用如下配置：工程师站1套；操作员站5套；打印站1套；网关1套；汉字打印机1台，现场控制站(I/O站)6套(MCS站1套；DAS站5套)。考虑到系统对可靠性的要求，以下3部分采用冗余配置：现场电源、系统电源冗余；通讯网络冗余；MCS站CPU板冗余；模入板冗余。以上冗余配置均可保证无扰切换。此外所有I/O模板均采用智能化设计，板间利用现场总线连接，完全隔离；所有模板均具有在线自诊断功能；可带电直接拔插；系统MTBF>10万小时，MTTR<5< span="">分钟，保证了系统的高可靠性。
系统组态软件可完成以下功能：系统管理组态；引用组态；系统库组态；历史库生成；追忆库生成；图形生成；报表生成；系统登录。
系统在线运行软件的是一套完整的实时监控软件，可完成DAS及控制调节功能。本系统通过网关与厂级信息管理网相连，将#11机组运行的主要参量及相关画面及时传送到信息管理网。
经过几个月的运行，整个系统运行稳定、安全、可靠，仪表参数的采集和显示准确率达到了100%。针对直流锅炉汽温变化快、不稳定的特点，考虑到因燃烧调节系统未投自动造成的各种可能的运行工况，减温自动调节系统的投运，保证机组在55%负荷到满负荷的变化下及启停磨的过程中温度偏差在±5℃范围内。仪表画面显示实用美观；控制框图通俗易懂；系统流程图立体形象。功能完善，操作简便、易懂，极大地减轻了检修、运行人员的监盘、维护工作强度，减少了误操作和人为事故，延长了设备的使用寿命。提高了厂里生产控制和管理水平，培养和锻炼了职工队伍，创造并树立了火力发电企业300MW以上机组应用国产DCS成功的典范，对其他机组今后使用DCS和类似设备具有参考和借鉴作用。According to the requirements of the production process of the power plant for the computer control system and the performance index of HS2000 distributed control system, combined with the actual situation on site, the following configuration is adopted: 1 set of engineer station; 5 sets of operator stations; 1 set of printing station; 1 set of gateway; 1 set of Chinese character printer and 6 sets of field control stations (I / O stations) (1 set of MCS station and 5 sets of Das station). Considering the reliability requirements of the system, the following three parts adopt redundant configuration: field power supply and system power supply redundancy; Communication network redundancy; MCS station CPU board redundancy; Die board redundancy. The above redundant configurations can ensure undisturbed switching. In addition, all I / O templates adopt intelligent design, and the boards are connected by Fieldbus for complete isolation; All templates have online self diagnosis function; It can be plugged in and out directly with electricity; The MTBF of the system is more than 100000 hours and the MTTR is less than 5 < span = "" > minutes, which ensures the high reliability of the system.
The system configuration software can complete the following functions: system management configuration; Reference configuration; System library configuration; Generation of history database; Recall library generation; Graphics generation; Report generation; System login.
The online operation software of the system is a complete set of real-time monitoring software, which can complete the functions of DAS and control regulation. The system is connected with the plant level information management network through the gateway to transmit the main parameters and relevant pictures of #11 unit operation to the information management network in time.
After several months of operation, the whole system is stable, safe and reliable, and the accuracy of instrument parameter acquisition and display has reached 100%. According to the characteristics of rapid and unstable steam temperature change of once through boiler, considering various possible operating conditions caused by non automatic operation of combustion regulation system, the operation of desuperheating automatic regulation system ensures that the temperature deviation of the unit is within ± 5 ℃ under the change from 55% load to full load and in the process of starting and stopping grinding. The instrument screen display is practical and beautiful; The control block diagram is easy to understand; Three dimensional image of system flow chart. It has perfect functions, simple and easy to understand operation, which greatly reduces the supervision and maintenance intensity of overhaul and operation personnel, reduces misoperation and man-made accidents, and prolongs the service life of the equipment. It has improved the level of production control and management in the plant, trained and trained the staff, created and established a successful model of domestic DCS for the first time for units above 300MW in thermal power enterprises, and can be used as a reference for other units to use DCS and similar equipment in the future