416NHM30030.20200826_115127自动化设备模块

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目前，我国火力发电企业应用的DCS系统绝大部分是从国外引进的，技术成熟，功能全面，在生产中发挥了突出作用，但也有一些不足，主要表现在：系统价格高，约为国内同等系统的几倍；开放性和可扩展性不好，互不兼容，不能互联；备品备件短缺，维修成本高，售后服务差；无汉化功能，不易培训，难以掌握。国产HS2000分布式控制系统在技术上已达到九十年代国际先进水平，可与世界产品相比。
主要优点有：
1．系统网络采用令牌工业总线网，分3层网络结构，传输速率达2.5Mbps，实时性好；网络采用冗余配置，保证数据传输的准确性；且上可连入厂级信息管理网，下可挂接各种PLC及智能仪表，开放性好。
2．I/O站上所有模板采用智能形式，可实现冗余、故障自诊断等功能，均可带电拔插，维护方便省时；操作员站采用高可靠工业PC机，市场货源丰富，易升级。
3．速度快，精度高。扫描周期0.5s，SOE分辨率￡1ms，回路控制周期0.2、0.5、1s可选，模入信号误差<±0.2%< span="">，键盘画面响应时间￡1s。
4．系统软件功能丰富，可生成各种应用系统，完成各种功能；基于Windows风格的全汉化界面，更易被中国用户所接受，操作简便、直观。
5．价格合理，用户培训全面，售后服务周到；备品备件齐全，更适合中国国情。At present, most of the DCS systems applied in China's thermal power enterprises are imported from abroad, with mature technology and comprehensive functions. They have played a prominent role in production, but there are also some deficiencies, which are mainly reflected in: the system price is high, which is about several times that of the same system in China; Poor openness and scalability, incompatibility and interconnection; Shortage of spare parts, high maintenance cost and poor after-sales service; Without Chinese function, it is difficult to train and master. The technology of domestic HS2000 distributed control system has reached the international advanced level in the 1990s, which can be compared with world famous brand products.
The main advantages are:
1. The system network adopts token industrial bus network, which is divided into three-tier network structure, with a transmission rate of 2.5mbps and good real-time performance; The network adopts redundant configuration to ensure the accuracy of data transmission; The upper part can be connected to the plant level information management network, and the lower part can be connected to various PLC and intelligent instruments, with good openness.
2. All templates on the I / O station adopt intelligent form, which can realize redundancy, fault self diagnosis and other functions, and can be plugged in and out with power, which is convenient and time-saving for maintenance; The operator station adopts highly reliable industrial PC, which is rich in market supply and easy to upgrade.
3. Fast speed and high precision. Scanning cycle: 0.5s, SOE resolution: £ 1ms, loop control cycle: 0.2, 0.5 and 1s, analog input signal error: < ± 0.2% < span = "" >, keyboard picture response time: £ 1s.
4. The system software has rich functions, which can generate various application systems and complete various functions; The fully Chinese interface based on Windows style is more easily accepted by Chinese users, and the operation is simple and intuitive.
5. Reasonable price, comprehensive user training and considerate after-sales service; The spare parts are complete, which is more suitable for China's national conditions.