|
In recent years, with the rapid growth of the national economy, the continuous improvement of the electricity demand, the increase in unit capacity and steam parameters to improve the controllability and safety of the plant operation on the development of the national economy plays a direct role in restricting. Chemical water treatment in power plants is the production process of the thermal power plants, the majority of domestic power plants, chemical water treatment system the widespread low degree of automation, production situation behind the phenomenon, which caused many influencing factors of the entire chemical soda treatment process timely, coordinated and timely response to treatment, often mistakenly opened the valve to have an adverse effect on production. Therefore, in the power plant, in order to improve production efficiency, integrated control system, water treatment work to ensure the safety of the power plant, the economic operation has a very important significance. In this paper, for a water system DCS system transformation in Zhangjiakou Power Plant, comprehensive introduction to the Zhangjiakou power plant chemistry of water conditions, as well as the transformation of the former system the problems of water control system, and elaborated a water DCS transformation necessary and urgency. At the same time, introduced the DCS control system development situation in the country, a brief description of the characteristics of distributed control systems, components, systems and distributed control system block diagram. Zhangjiakou Power Plant chemical treatment process DCS system transformation using the distributed control system, design and production of Quartet, the Quartet DCS system performance parameters of the text. Achieved through the transformation of a system of hydroelectric power plant in Zhangjiakou Power Plant DCS system optimization of chemical water treatment upgrades. The test experimental research for the evaluation of the chemical of water DCS system transformation after the effect of the chemical treatment of the water system has been transformed, the experimental results show that the the the Quartet Company the independently developed CyberControl software and CSC800 control hardware, the whole plant water system, the transformation was complete with automatic water, automatic regeneration, water metering, water quality monitoring, flow control, level control, pressure protection, PC monitoring and auxiliary control centralized control system to achieve the full range of automatic control of the whole plant water craft . Chemical system water DCS system transformation to improve the degree of automatic control and management level of the water treatment process, to promote power generation companies long-term rapid development of great significance, also provided valuable experience for the same type of unit DCS system transformation.
|