Volume 59

Assessment, Optimization and Validation Study of Integrated Energy System in Hot Summer and Warm Winter Zone Chengliang Lu,Yingjun Ruan, Hua Meng, Tingting Xu, Yuting Yao, Chaoliang Wang, Wei Liu

Abstract

Aiming at the low operational efficiency and equipment redundancy of the energy system in an industrial park in a hot summer and warm winter zone of China, this paper firstly assesses the current state of the energy system, then based on the assessment results and the actual situation of the park, the energy system is optimized by using the typical day optimization, and finally, the operating benefits under the year-round scenario are verified. The results show that the optimized photovoltaic capacity is increased to the upper limit, the capacity of the energy storage equipment is increased accordingly, the capacity of the cooling equipment is reduced by 22.8%, and the dynamic payback period is 3.6 years, which can effectively reduce the redundancy of the equipment, improve the operational efficiency, and enhance the economy. However, under the year-round scenario validation, the typical day optimization does not consider enough the extreme cold load and PV output fluctuation, resulting in 2.9% of the cold load not being satisfied in the whole year. The dynamic payback period is extended to 7.1 years, with a significant decrease in the stability and economy of the system. This study provides a theoretical basis for the comprehensive energy system planning of industrial parks in hot summer and warm winter areas.

Keywords hot summer and warm winter zone,integrated energy system,assessment and optimization,analysis of operational benefits