Research And Application Of The Automatic Control System For Condensation Water Treatment In Yangcheng Power Plant

Condensation water as boiler feed water main water source, the water quality will directly influence the operation of the comprehensive performance index. In this paper, Datang Yangcheng Power Plant2×600MW unit condensate polishing treatment control system in the actual operation process problems, through the analysis and comparison of the traditional relay control scheme, the programmable logic controller control scheme and decentralized control system scheme, combined with the field equipment and the actual situation, decided to adopt the T-XP2000system as new scheme of control system, realize the power plant condensate fine treatment system of full automatic control.This paper introduces the condensate fine treatment system in power plant and its role in the control system’s application present situation and development trend, at the same time, detailed elaborated fine treatment process. Focus on the analysis of the working principle of the control system and control method, and according to the condensate polishing treatment control system requirements, define the control system scheme. According to the transformation scheme of control system network structure and hardware structure design as well as the part of hardware equipment selection and control system control logic configuration design and debugging. After the transformation of the system after the scene debugging, performance indicators to meet the transformation requirements, also verified the correctness of design scheme. The final conclusion of the thesis, and the condensed water fine treatment control system development.