In the context of current energy structure transformation,conventional thermal power would gradually transform into grid source support and system regulation.Coupling with distributed photovoltaic power is an effective attempt for thermal power enterprises to achieve cost reduction and efficiency improvement.However,due to the lack of relevant guidance for the connection of non centralized power sources for the factory use,there is a lack of evaluation strategies and empirical references for system security and stability.For this purpose,taking the thermal photovoltaic complementary energy supply system of a thermal power plant in northwest China as an example,its operating characteristics are analyzed and a technical framework for stability evaluation is provided.In examples of different power units,grid connection levels,and minimum photovoltaic unit layout,application evaluation issues such as static power flow,transient stability,and power quality are discussed.It is calculated that the power consumption reduction efficiency of thermal power units in this case achieves an improvement of 18％～42％.This conclusion has typical reference significance for the application of the power generation technology model of"distributed photovoltaic access to plant use systems"in thermal power plants.
关键词
分布式光伏/厂用系统/节能降耗/火电厂
Key words
distributed photovoltaic power/auxiliary power system/energy saving and emission conservation/thermal power plant
维普
万方数据