Optimization on Recirculation Control of Feedwater Pump System in the Power Plant

doi:10.11930/j.issn.1004-9649.2014.9.11.6

Abstract

Abstract: The feedwater pump is one of the most important auxiliary equipments of thermal power plants. It constitutes the water supply system which is essential to the unit safe and economic operation. In order to improve the secure and economic operation level of the water supply system, in combination with the analysis of the related fault mechanism, the optimized control strategy of the feedwater pump recirculation system is put forward after systematic research and testings. This optimized strategy is established according to the relationship between the speed and flow of the feedwater pump on the basis of the new PID control with three-layer coordinated controls. The implementation of the optimized PID closed-loop control strategy can not only improve the security of the unit, but also reduce the energy consumption of the recirculation system as well as the valve repair costs. The security and economics of the system with optimized control is verified through testing.

Key words: thermal power plant, feedwater pump, feedwater pump recirculation control, optimization, control strategy, auxiliary equipment, PID control, coordinated control

CLC Number:

TK323

YUE Jian-hua, XIE Jian-min, ZHU Yan-hai, MA Tian-ting, HU Yi-qun, MA Ji-ming. Optimization on Recirculation Control of Feedwater Pump System in the Power Plant[J]. Electric Power, 2014, 47(9): 11-17.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.2014.9.11.6

https://www.electricpower.com.cn/EN/Y2014/V47/I9/11

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