Stabilization Control Strategy for Shore Power System with Surge Loads Based on Virtual Synchronous Generator

  • Wu Cao
  • Kangli LiuEmail author
  • Sheng Xu
  • Haotian Kang
  • Jianfeng Zhao
Original Article


The frequent starting of large capacity lifting machines and other surge ship electrical loads will result in severe impacts on a shipboard power network, such as voltage and frequency fluctuations. Therefore, a novel stabilization control strategy for shore power systems based on virtual synchronous generator is proposed in this paper, so as to improve the power quality and enhance the stability and reliability of shipboard power networks. In this strategy, a reactive power inertia component is embedded into the virtual synchronous generator aiming at shipboard surge reactive powers. On this basis, a voltage and frequency stability control method is presented to improve the static performances of shore power systems. In addition, a d-q decoupling control scheme in synchronous reference frame for the voltage and current double closed-loop control system is designed, and moreover, the influence of different feedback voltages on the output characteristics of shore power supplies is studied. The theoretical analysis, simulation and experiment results show that, the proposed control strategy can effectively attenuate the frequency and voltage fluctuations, eliminate the frequency and voltage steady-state errors, as well as realize the power distribution evenly for modular shore power supplies.


Virtual synchronous generator (VSG) Shore power supply Surge electrical loads D-q decoupling control 



This work was supported in part by grants from the National Natural Science Foundation of China (51607037), the Innovation Foundation for Combination of Industry and Scientific Research of Jiangsu Province, China (2016076-09), and Project funded by China Postdoctoral Science Foundation (2018M642138).


  1. 1.
    Khersonsky Yuri, Islam Moni, Peterson Kevin (2007) Challenges of connecting shipboard marine systems to medium voltage shore-side electrical power. IEEE Trans Ind Appl 43(3):73–78CrossRefGoogle Scholar
  2. 2.
    Kevin LP, Pcniamin BC, Mohammed et al (2009) Tackling ship pollution from shore side. IEEE Trans Ind Appl 41(6):56–60Google Scholar
  3. 3.
    Vaishnav P, Fischbeck PS, Morgan MG, Corbett JJ (2016) Shore power for vessels calling at US ports: benefits and costs. Environ Sci Technol 50(3):1102–1111CrossRefGoogle Scholar
  4. 4.
    Sciberras EA, Bashar Z, Atkinson DJ (2015) Electrical characteristics of cold ironing energy supply for berthed ships. Transp Res Part D Transport Env 39:31–44CrossRefGoogle Scholar
  5. 5.
    Coppola T, Fantauzzi M, Lauria D, Pisani C, Quaranta F (2016) A sustainable electrical interface to mitigate emissions due to power supply in ports. Renew Sustain Energy Rev 54:816–823CrossRefGoogle Scholar
  6. 6.
    Bevrani H, Ise T, Miura Y (2014) Virtual synchronous generators: a survey and new perspectives. Electr Power Energy Syst 54:244–254CrossRefGoogle Scholar
  7. 7.
    Ashabani SM, Mohamed YAI (2012) A flexible control strategy for grid-connected and islanded microgrids with enhanced stability using nonlinear microgrid stabilizer. IEEE Trans Smart Grid 3(3):1291–1301CrossRefGoogle Scholar
  8. 8.
    Soni N, Doolla S, Chandorkar MC (2016) Inertia design methods for islanded microgrids having static and rotating energy sources. IEEE Trans Ind Appl 52(6):5165–5175CrossRefGoogle Scholar
  9. 9.
    Sakimoto K, Miura Y, Ise T (2011) Stabilization of a power system with a distributed generator by a virtual synchronous generator function. In: Proceedings of 2011 IEEE 8th International Conference on Power Electronics and ECCE Asia, Jeju, Korea(South), pp 1498–1505Google Scholar
  10. 10.
    Zhong Q, Weiss G (2011) Synchronverters: inverters that mimic synchronous generators. IEEE Trans Ind Electron 58(4):1259–1267CrossRefGoogle Scholar
  11. 11.
    Beck HP, Hesse R (2007) Virtual synchronous machine. In: Proceedings of 2007 9th international conference on electrical power quality and utilisation, pp 1–6, BarcelonaGoogle Scholar
  12. 12.
    Visscher K, De Haan SWH (2008) Virtual synchronous machines (VSG’S) for frequency stabilization. In: Proceedings of CIRED Seminar 2008: Smart Grids for Distribution, pp 1–4, Frankfurt, GermanyGoogle Scholar
  13. 13.
    Song Y, Xiao L, Ye W (2014) Mobile on-shore marine power supply system for harmonic elimination. Appl Mech Mater 703:290–293CrossRefGoogle Scholar
  14. 14.
    Jia L, Yushi M, Toshifumi I (2016) Comparison of dynamic characteristics between virtual synchronous generator and droop control in inverter-Based distributed generators. IEEE Trans Power Electron 31(5):360–361Google Scholar
  15. 15.
    Andalib-Bin-Karim C, Liang X, Zhang H (2018) Fuzzy-secondary-controller-based virtual synchronous generator control scheme for interfacing inverters of renewable distributed generation in microgrids. IEEE Trans Ind Appl 54(2):1047–1061CrossRefGoogle Scholar
  16. 16.
    Shintai T, Miura Y, Ise T (2014) Oscillation damping of a distributed generator using a virtual synchronous generator. IEEE Trans Power Deliv 29(2):668–676CrossRefGoogle Scholar
  17. 17.
    Wang F, Zhang L, Feng X, Guo H (2018) An adaptive control strategy for virtual synchronous generator. IEEE Trans Ind Appl 54(5):5124–5133CrossRefGoogle Scholar
  18. 18.
    Cao Y, Wang W, Li Y et al (2018) A virtual synchronous generator control strategy for VSC-MTDC systems. IEEE Trans Energy Convers 33(2):750–761CrossRefGoogle Scholar
  19. 19.
    Dou C, Zhang Z, Yue D, Song M (2017) Improved droop control based on virtual impedance and virtual power source in low-voltage microgrid. IET Gener Transm Distrib 11(4):1046–1055CrossRefGoogle Scholar
  20. 20.
    Golsorkhi Mohammad S, Dylan D, Lu C (2015) A control method for inverter-based islanded microgrids based on V-I droop characteristics. IEEE Trans Power Deliv 30:3CrossRefGoogle Scholar

Copyright information

© The Korean Institute of Electrical Engineers 2019

Authors and Affiliations

  • Wu Cao
    • 1
  • Kangli Liu
    • 1
    Email author
  • Sheng Xu
    • 2
  • Haotian Kang
    • 1
  • Jianfeng Zhao
    • 1
  1. 1.School of Electrical EngineeringSoutheast UniversityNanjingChina
  2. 2.Department of Electrical EngineeringTaizhou UniversityTaizhouChina

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