GE新华推出了新的DCS系统NG DCS.doc

GE新华推出了新的DCS系统:NG DCSNG DCS is a new generation of Distributed Control System by GE Energy, which based on OC 4000 and Mark Vie systems and combines with years of XinHua DCS engineering experience. GE Energy has more than 100 years of experience in the area of electricity. Since 1884 GE Energy provided the first turbine generator, GE Energy constantly develops new technology, the product line covers steam turbine, gas turbine, generator, wind generator, water turbine and so on. At the same time, GE Energy provides auxiliary control systems for all main equipments, such as the Mark series controller, Woodward controller, the Bently conditioning monitor equipment, EX2100 excitation controller etc. NG DCS system is an integrated control platform with high-performance and highly reliability. It highlights the following technical features in the system design:1. The Brand new controller and I/O module design Adopting high performance 667 MHz controller - UCSA, the controllers software platform adopts the QNX real-time operating system and achieves high-speed logic operation and the millisecond clock timing function. 2. High-efficient network communication and time correction function NG DCS control network and I/O network are 100 M high-speed Ethernet. Controller and the I/O modules communicate via Ethernet directly to reduce the number of intermediaries and the time delay. At the same time I/O network is based on the IEC1588 protocol, achieves 1ms accuracy of time synchronization between all I/O modules. 3. Compact system layout The new I/O module and terminal board combines to a whole set of component, the filed signal cables connect directly to the terminals of I/0 components. The reduction of the cabinets number lowers the requirements of central control room, thus reducing the total cost of customer installation. 4. The reliability of system design In order to improve the reliability of the system, the methods of reliability design and relevant experimental verification are widely used in the system development and the manufacturing process. Each module before the stereotypes has to undergo a rigorous test of the HALT (highly accelerated life test) to ensure the module design reliability. System design complies with CE, CSA certification and other related requirements. At present, the certification process is gradually proceeding. 5. The compatible integration platform NG DCS is compatible with GE Energy Control Products integration solutions. Embodies the integration and integration features. Firstly, the control network adopts the EGD protocol by GE standard, GE Energys different control products can be unified communication protocol to exchange data. Secondly, NG DCS software integrates with optimization interface, which makes it adoptable to connect with optimization software in plant-level and unit-level. Thirdly, IOnet and IO module are fully hot swap; Fourthly, NG DCS software is capable of configuration of Mark VIe and NGDCS. NG DCS system architecture is divided into three levels: human-machine interface level, process control level and the process of input/output (I/O) level. Human-machine interface level Human-machine interface is human machine stations of the Windows-based platform, including operator station, engineer station, historical data station and process optimization station. All human-machine interface stations are backups to each other; users can modify the software settings and user privileges to change the man-machine interface functions. Human-machine interface level and control level through the redundancy process real-time control network. This is called UDH network. All nodes on the network use NTP protocol. A NTP server is connect on UDH and usually connected to a GPS receiver. Process control level Process control level is the redundant controller based on the QNX platform, which Effectively integrates main existing products of GE Energy in a public platform and offers solutions for the integration of plant. Process input/output (I/O) level I/O level by using distributed modules and via high-speed Ethernet is connected to process control directly. Distributed architecture enables users according to the physical location of the object distribution to place the I/O modules flexibly in the factory, thus shortening the length of the scene signal cable, reducing installation costs, and effectively reducing the electromagnetic interference capable of existing in long-distance signal. All I/O modules adopt no-jumper design concept, module configuration are operated by software, which improves the reliability and user-friendly to users. NG DCS and Mark VIe system use the same controller. Both systems I/O modules in the I/O network level is fully compatible mutually, capable of swap. (Physical size and appearance are different) The triple redundancy control to the high security requirements of the occasion, users can choose Mark VIe triple redundant modules to control the critical targets. The original system installed with Mark Vie, NGDCS is capable of connecting with easily. I/O level provides field bus access capability. NG DCS I/O level will support ProfiBus, HART, Modbus, FF bus and DeviceNet etc.The Modbus communication interface has been completed in HMI. HART signal can be accessed using Mark Vie HART module. NG DCS software inherited OC4000 system softwares features of intuitive and easy-to-use, through a unified system software to achieve the integrity of the system configuration and logic configuration. Users will only need to use a software system