Journal of Shanghai Jiao Tong University ›› 2023, Vol. 57 ›› Issue (1): 10-16.doi: 10.16183/j.cnki.jsjtu.2022.017

Special Issue: 《上海交通大学学报》2023年“新型电力系统与综合能源”专题

• New Type Power System and the Integrated Energy • Previous Articles     Next Articles

Optimal Sizing of Grid-Connected Wind-Solar-Biogas Integrated Energy System Considering Demand Response

YU Faqiang1, ZHANG Mingjie1, CHENG Yu2, CHEN Dawei2, YANG Hanyu3(), LI Canbing2   

  1. 1. Qingyuan Power Supply Bureau, Guangdong Power Grid Co., Ltd., Qingyuan 511500, Guangdong, China
    2. Key Laboratory of Power Transmission and Power Conversion Control of the Ministry of Education, Shanghai Jiao Tong University, Shanghai 200240, China
    3. College of Electrical Engineering and Control Science, Nanjing Tech University, Nanjing 211816, China
  • Received:2022-01-24 Revised:2022-03-22 Online:2023-01-28 Published:2023-01-13
  • Contact: YANG Hanyu E-mail:hyang73@outlook.com.

Abstract:

There are abundant biomass resources in China’s rural areas, which can be converted into biogas energy through fermentation systems. However, the rewards of the investments of the pure biogas projects is poor because biogas is a cheap resource. This paper proposes a 100% renewable grid-connected wind-solar-biogas integrated energy system which utilizes the complementarity between solar energy, wind energy, and biogas to provide users with biogas and electricity. The battery-like characteristics of biogas are modeled based on the microbial fermentation kinetic model and the temperature-sensitive characteristics of biogas fermentation. In addition, the demand-side response is considered to further increase the flexibility of the system, and the time-of-use electricity price is used to save power purchase costs, thereby minimizing investment costs and annual operating costs. Case studies show that the wind-solar-biogas micro-energy network can effectively reduce the total investment cost by 3% to 9% while increasing the benefit by 1.27 to 2.40 times.

Key words: integrated energy system, biogas generation, demand response, optimal sizing

CLC Number: