The trough concentrating solar thermal power generation system is suitable for energy recovery of medium and low temperature heat sources with poor meteorological resources.In this paper

the whole system of low-temperature trough concentrating solar thermal power generation is taken as the research object.Based on the typical annual meteorological data of a certain area in Beijing

the mathematical model of three key links of the trough-type concentrating heat collection system

heat storage system and thermal power conversion system was established.Finally

study on operating characteristics of the system under the four conditions of the solar terms "spring equinox"

"summer solstice"

"autumn equinox" and "winter solstice" was carried out based on the EBSILON simulation software

and the comprehensive performance including four indicators such as the generating output power of the unit was analyzed as well.The results show that

the output power of the typical year to end and the hourly efficiency of the basic cycle thermal power conversion system are both higher on the spring equinox day

while the optical efficiency of the trough concentrator and the photothermal conversion efficiency of the whole system are higher on the autumn equinox day.The research results can provide a reference for the operation of medium and low temperature trough type concentrating solar power plants.