Multi-objective optimal planning of the stand-alone microgrid system based on different benefit subjects

• Published in: Energy (Oxford) Vol. 116; pp. 353 - 363
• Main Authors: Guo, Li, Wang, Nan, Lu, Hai, Li, Xialin, Wang, Chengshan
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.12.2016
• Subjects: absorption; control methods; Different benefit subjects; Dispatch control method; energy; Energy management; islands; Multi-objective optimal planning; planning; prices; renewable resources; Stand-alone microgrid system; Voltage regulation strategy; Dispatch control method; Multi-objective optimal planning; Voltage regulation strategy; Different benefit subjects; Energy management; Stand-alone microgrid system
• ISSN: 0360-5442
• DOI: 10.1016/j.energy.2016.09.123

As an important means to realize the energetic complementarity and improve the efficiency of renewable resources, the stand-alone microgrid (SAMG) system gains attention increasingly, especially in islands and remote areas. In this paper, considering the interest conflict of the distribution company and the distributed generation owner, a new multi-objective optimal planning model is formulated for medium voltage SAMG. Besides, to avoid the power constraint of distributed generation (DG) once the over-limit voltage occurs, a novel two-step power dispatch control method including the voltage regulation strategy is proposed, in which the absorption of distributed power by energy storage system (ESS) and the reactive power adjustment though its power control system are used to regulate voltage. The goal of this paper is to search the Pareto-optimal front of the site and capacity of DG as well as the contract price between both parties, and thus can provide effective references for practical planning of SAMG. Considering the high cost of ESS, the investment analysis of ESS is also discussed in the paper. •A multi-objective planning model based on different benefit subjects is proposed.•A two-step power dispatch method including the voltage regulation is proposed.•The economical efficiency of the proposed model is analyzed.•The effective reference for the stand-alone microgrid planning is provided.