Design and dispatching of all-clean energy producing-consuming system with six-energy coupling. (July 2021)

• Record Type: Journal Article
• Authors: Feng, Zhongnan; Lin, Xiangning; Wang, Zhixun; Sui, Quan; Xu, Shihong; Li, Zhengtian; Wu, Chuantao
• Is Part Of: International journal of electrical power & energy systems. Volume 129(2021)
• Publication Date: 2021-07
• Subjects: Offshore island -- Renewable energy consumption -- Six-energy coupling -- Producing-consuming self-consistent -- Energy hub -- Day-ahead scheduling; Electrical engineering -- Periodicals; Electric power systems -- Periodicals; Électrotechnique -- Périodiques; Réseaux électriques (Énergie) -- Périodiques; Electric power systems; Electrical engineering; Periodicals; 621.3
• DOI: 10.1016/j.ijepes.2021.106801
• Languages: English
• ISSNs: 0142-0615

Abstract

Highlights: Proposing a generalized multi-energy producing-consuming self-consistent framework. A rigorous mathematical paradigm is designed in the energy-coupled system. Introducing multiple storage media under an ordinary scenario of offshore island. The multi-energy community maximize the efficiency of clean energy utilization. Abstract: The installed capacity of wind power and photovoltaic (PV) has grown up in recent years due to the requirement of developing green power. However, the curtailment of wind power and PV becomes serious as well owing to the relatively limited adjusting capability of the power grid, leading to tremendous waste of energy. Meanwhile, besides electricity, the requirement on other energy grows up gradually as well, resulting in remarkable pressure on the corresponding energy supply systems. On the other hand, the coupling and storage of multi-energy cannot only promote the consumption of renewable energy greatly but mitigate the pressure of various energy supply systems by replenishing various styles of energy. In this paper, taking offshore island as an example, a model of six-energy producing-consuming self-consistent (SEPCSC) system is put forward in the first. Further, by using the concept of energy hub, this model can be divided into supply side, conversion side and load side, each of which can be analyzed and modeled respectively. On this basis, a day-ahead dispatching model is established, which takes minimizing the total cost of purchasing energy from the external network as the objective function. Further, various appropriate constraints are designed correspondingly. The necessity of multi-energy coupling and introducing multiple storage media is validated with the simulation comparison to those cases of loose-coupling or battery only. In addition, the impact of various energy prices under the style of multi-energy coupling is investigated. It can be proven with case studies that the proposed SEPCSC system is capable of promoting the consumption of renewable energy, accompanied by the decrease in the total cost of system dispatching.