Study on the Steam Source Selection of Feed Pump Turbine Based on Energy Matching

Jiongming Wang, Feng Wang, Zhenglong Yu, Xiaochen Chen, Xiaojie Lin, Peng Zhang, Zhouyong Lin, Jincheng Chen, Hongyu Guan and Yutong Gong

Energy and Environment Research, 2022, vol. 11, issue 1, 86

Abstract: The first phase of a power plant has two subcritical 300 MW units, and each boiler feed water pump is equipped with two with 50% capacity steam driven feed pumps and one 50% capacity electric start-up feed pump. The two steam pumps are put into operation during normal operation. After the heat supply transformation in the unit of the first phase of this power plant and based on the calculation and analysis of the heat balance of the unit, it is found that there will be insufficient output of the feed pump due to the insufficient steam source after the flow-through transformation, which will affect the water supply of the unit and reduce the energy utilization rate. To avoid this, the steam source of feed pump turbine needs to be selected again. Taking the original steam turbine condition of feed pump and the original steam source of feed pump turbine as the research basis, this paper makes analysis on the steam source transformation, and concludes the scheme of steam source selection and reconstruction based on energy matching. The feasibility of the scheme is tested and verified finally.

Date: 2022
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