A Flexible Control Strategy for Shore-to-Ship Power System in Terms of Grid-Connected and Off-Grid Switch

Abstract

There are promising application prospects for applying the shore power technology to the ships in the port for the purpose of pollution prevention. However, the grid-connection of the shore power supply to the ship power grid leads to current surges, damages the ship power consumption equipment, and results in the instability of the ship power grid system, which will seriously affect the reliability of the operation of the ship power grid system. In order to address this problem, the mathematical model of virtual synchronous generator is introduced in this paper. Then, a control method for the flexible grid-connection of the shore power supply to the ship power grid based on the virtual synchronous generator is proposed. Next, the output characteristics of the shore power supply are optimized to match the characteristics of the ship generator, which contributes to the flexible grid-connection of the shore power supply to the ship power grid system. The effectiveness and the feasibility of this method are verified by simulation and experiments.

Onshore power supply–trends in research studies

“…The need for financial support for OPS from public funds (Wang et al, 2021a) is also raised, because of the environmental benefits for the region and local communities (Ballini and Bozzo, 2015). Moreover, a valuable source of information for stakeholders includes studies devoted to building strategy for OPS System (Yu et al, 2017) and control strategy for OPS (Ji et al, 2018) presenting also barriers and drivers to the implementation of OPS (Williamsson et al, 2022). Finally, there are also works related to energy management in seaports (Acciaro et al, 2014) including the management of OPS systems and optimization of daily use of OPS (Yu et al, 2022).…”

“…Reducing shipboard emissions Environmental Ben46efits of OPS Legal analysis (legal standards, law regulations, etc.) Regulation strategy for OPS Standardization in the Design of OPS Source: own elaboration on the base of: (IMO, 2015; Innes and Monios, 2018;IAPH, 2010;Winkel et al, 2016;Stolz et al, 2021;Bakar et al, 2022;Bullock et al, 2023;Hulme, 2006;AAPA, 2007;Haddadian and Haddadian, 2011;Acciaro et al, 2014;Qiong and Xiao, 2015;Sciberras et al, 2015;Yang and Chai, 2016;Atallah et al, 2017;Yu et al, 2017;Chengdi et al, 2018;He et al, 2018;Ji et al, 2018;Tarnapowicz and German-Galkin, 2018;Gutierrez-Romero et al, 2019;Kumar et al, 2019;Sun et al, 2019;Vlachokostas et al, 2019;Zis, 2019;Colarossi and Principi, 2020;He et al, 2020;Wang et al, 2020;Wang et al, 2021a;Jung and Schindler, 2021;Kizielewicz and Skrzeszewska, 2021;Martínez-Lopez et al, 2021;Ortiz-Imedio et al, 2021;Peng et al, 2021;Spengler and Tovar, 2021;Badakhshan et al, 2022;Farrukh et al, 2022;Galkin and Tarnapowicz, 2022;Karimi et al, 2022;Qiu et al, 2022;Williamsson et al, 2022;…”

Research on Comprehensive Control of Power Quality of Port Distribution Network Considering Large-Scale Access of Shore Power Load

“…In terms of power management of port distribution network, literature [15] summarized the comprehensive management method of shore power system from three aspects: insulation monitoring, shore power equipment safety improvement technology and fault diagnosis, so as to improve the safety and stability of shore power system. Aiming at the problem that the connection of shore power to the ship's power grid causes current surges, damages the ship's electrical equipment, and leads to the instability of the ship's power grid system, literature [16] proposed a flexible grid-connected control method for shore power based on virtual synchronous generators. The output characteristics of the shore power supply can match the characteristics of the ship's generator, so as to realize the smooth operation of the shore power system.…”