The Design And Research On Distributed Control System In Zhangwan Hydropower Station

With the rapid development of economy and anabiosis of the traditional industry,The demand of electric power becomes more and more great. So,how to use the resource of electric power effectively is the chief problem to solve. Promoted by the development of automation and information technologies toward opening,standardization and network etc, computer control system in electric industry develops rapidly.the computer-based automatic power dispatching system is playing a more important role in the safe, economical and stable operation process of the power system. Based on the design and implementation of DCS system of the Zhangwan hydropower station which is the key project in Jiangxi province, the dissertation brings forward in-depth analysis on the characteristics and requirements of the DCS system of medium & pint-sized hydropower station, and sets forth the scheme of system structure. By layering system structure and functions, the paper correspondingly presents the whole software system.The main issue of the paper is : To make the system has some?virtues such as visual goodness, stability, easy to maintain etc., it should put forward a reasonable blue print of hardware and software, and implement the latter by using?object- oriented programming technology, based on the analysis on the usual structure and functions DCS system. After analyzing the efficiency of the system, the paper presents some improvement on the communication protocol in the end. Finally,the writer analyses the whole system at large and brings forward the expectation of the DCS。Integrating all kinds of devices with various functions and different communication protocols and then making them as a whole by uniform software driver platform, the DCS system of Zhangwan levels a high automatic performance in total.The system innovates in using the Internet Communication Controller I-7188E5 to realize extending serial interface and transmitting data,using Touch Screen to realize watching and controlling the system locally, which can be referrible in the development of the similar control systems, and deserves further application.