Performance analysis of a solar-aided power generation(SAPG) plant using specific consumption theory  

作　　者：HOU HongJuan WANG MengJiao YANG YongPing CHEN Si HU Eric 

机构地区：[1]National Thermal Power Engineering and Technology Research Center, North China Electric Power University [2]University of Kentucky, Power and Energy Institute of Kentucky [3]School of Mechanical Engineering,University of Adelaide

出　　处：《Science China(Technological Sciences)》2016年第2期322-329,共8页中国科学（技术科学英文版）

基　　金：supported by the National Basic Research Program of China("973"Project)(Grant No.2015CB251505);the National Natural Science Foundation of China(Grant No.51206049);the National Hi-Tech Research and Development Program of China("863"Project)(2012AA050604);the 111 Project(Grant No.B12034);the Fundamental Research Funds for the Central Universities(Grant No.2014XS29)

摘　　要：In contrast to a traditional coal-fired power generation plant where steam extracted from a turbine is used to preheat the feedwater in all preheating stages, a solar-aided power generation(SAPG) plant uses solar heat to replace a part or all of the extracted steam in one or more preheating stages. The performance of an SAPG plant with different replacements is investigated in this study by using specific consumption theory(SCT). Fuel-specific and cost-specific consumption models for SAPG plants are built based on the SCT. A typical 330 MW coal-fired power plant is used as the study case. The performance of the SAPG plant in terms of specific consumption, with steam obtained from the first through the eighth(except for the fourth) stages of extraction replaced by solar heat, is compared with that of the reference coal-fired power plant. The fuel-specific consumption of the SAPG plant is determined to be lower than that of the reference coal-fired power plant. The fuel-specific consumption accrual distribution in SAPG plants is used to assess the effect of each individual replacement. Effective strategies to reduce the specific costs of the SAPG and coal-fired power plants are proposed based on the results of this study.

关 键 词：solar-aided power generation specific consumption theory fuel-specific consumption cost-specific consumption 

分 类 号：TM61[电气工程—电力系统及自动化]