A Temporary Overvoltages Mitigation Strategy for Grid-Connected Photovoltaic Systems Based on Current-Source Inverters

  • M. Ali Azghandi
  • S. Masoud BarakatiEmail author
Research Paper


Temporary overvoltages (TOVs) typically caused by short-circuit faults and switching events can impose considerable damage on power system equipment. Furthermore, the penetration of distributed generations into the utility grids may intensify the problem arising from the TOVs. Despite recent research advancements, the TOV problems with current-source inverter (CSI)-based photovoltaic (PV) systems have not been investigated comprehensively. This paper proposes a combination of virtual impedance and modified switching strategy for grid-connected CSI-based PV systems. The virtual impedance-based control damps current and voltage oscillations. On the other hand, the proposed pulse width modulation strategy restricts power injection during the fault conditions. Simulation results confirm that the proposed approach effectively mitigates the TOV without controller mode switching between the standard and fault conditions.


Current-source inverter (CSI) Distributed generation (DG) Photovoltaic (PV) Temporary overvoltage (TOV) Virtual impedance 


  1. Aapro A, Messo T, Roinila T, Suntio T (2017) Effect of active damping on output impedance of three-phase grid-connected converter. IEEE Trans Ind Electron 64(9):7532–7541CrossRefGoogle Scholar
  2. Bloemink JM, Iravani MR (2012) Control of a multiple source microgrid with built-in islanding detection and current limiting. IEEE Trans Power Deliv 27(4):2122–2132CrossRefGoogle Scholar
  3. Chen L et al (2014) Reducing the fault current and overvoltage in a distribution system with distributed generation units through an active type SFCL. IEEE Trans Appl Superconduct 24(3):1–5MathSciNetGoogle Scholar
  4. Dash PP, Kazerani M (2011) Dynamic modeling and performance analysis of a grid-connected current-source inverter-based photovoltaic system. IEEE Trans Sustain Energy 2(4):443–450CrossRefGoogle Scholar
  5. Didier G, Lévêque J (2014) Influence of fault type on the optimal location of superconducting fault current limiter in electrical power grid. Int J Electr Power Energy Syst 56:279–285CrossRefGoogle Scholar
  6. Etemadi AH, Iravani R (2013) Overcurrent and overload protection of directly voltage-controlled distributed resources in a microgrid. IEEE Trans Ind Electron 60(12):5629–5638CrossRefGoogle Scholar
  7. Geng Y, Yun Y, Chen R et al (2018) Parameters design and optimization for LC-type off-grid inverters with inductor-current feedback active damping. IEEE Trans Power Electron 33:703–715CrossRefGoogle Scholar
  8. Ghanbari T, Farjah E (2013) Unidirectional fault current limiter: an efficient interface between the microgrid and main network. IEEE Trans Power Syst 28(2):1591–1598CrossRefGoogle Scholar
  9. Ghoddami H, Yazdani A (2015) A mitigation strategy for temporary overvoltages caused by grid-connected photovoltaic systems. IEEE Trans Energy Convers 30(2):413–420CrossRefGoogle Scholar
  10. Hwang J et al (2013) Validity analysis on the positioning of superconducting fault current limiter in neighboring AC and DC microgrid. IEEE Trans Appl Superconduct 23(3):5600204CrossRefGoogle Scholar
  11. Liu T, Liu J, Liu Z, Liu Z (2019) A study of virtual resistor-based active damping alternatives for LCL resonance in grid-connected voltage source inverters. IEEE Trans Power Electron 35:247–262CrossRefGoogle Scholar
  12. Lu X, Wang J, Guerrero J, Zhao D (2018) Virtual-impedance-based fault current limiters for inverter dominated AC microgrids. IEEE Trans Smart Grid 9:1599–1612CrossRefGoogle Scholar
  13. Miao Z, Yao W, Lu Z (2019) Single-cycle-lag compensator-based active damping for digitally controlled LCL/LLCL-type grid-connected inverters. IEEE Trans Ind Electron 67:1980–1990CrossRefGoogle Scholar
  14. Moon W et al (2013) A study on the application of a superconducting fault current limiter for energy storage protection in a power distribution system. IEEE Trans Appl Superconduct 23(3):5603404CrossRefGoogle Scholar
  15. Plet CA et al (2010) Fault response of grid-connected inverter dominated networks. In: IEEE PES general meeting, IEEEGoogle Scholar
  16. Radwan AAA, Mohamed YAI (2013) Analysis and active suppression of AC-and DC-side instabilities in grid-connected current-source converter-based photovoltaic system. IEEE Trans Sustain Energy 4(3):630–642CrossRefGoogle Scholar
  17. Rangarajan S, Collins E, Fox J (2018) Smart PV and SmartPark inverters as suppressors of TOV phenomenon in distribution systems. IET Gener Trans Distrib 12:5909–5917CrossRefGoogle Scholar
  18. Robert M, Sakib M, Succar S (2017) Impacts of substation transformer backfeed at high PV penetrations. In: IEEE power & energy society general meeting, IEEEGoogle Scholar
  19. Ropp ME, Schutz D, Cozine S (2011) Temporary overvoltage issues in distribution-connected photovoltaic systems and mitigation strategies. In: Proceedings of 47th Minnesota power systems conferenceGoogle Scholar
  20. Saad H, Dennetière S (2019) Study on TOV after fault recovery in VSC based HVDC systems. In: 2019 IEEE milan powertech. IEEE, pp 1–6Google Scholar
  21. Schauder C (2011) Impact of FERC 661-A and IEEE 1547 on photovoltaic inverter design. In: 2011 IEEE power and energy society general meeting, IEEEGoogle Scholar
  22. Schork F, Brocke R, Rock M (2018) Analysis of temporary overvoltages in AC-grids. In: NEIS 2018; conference on sustainable energy supply and energy storage systems. VDE, pp 1–6Google Scholar
  23. Wieserman L, McDermott TE (2014) Fault current and overvoltage calculations for inverter-based generation using symmetrical components. In: 2014 IEEE energy conversion congress and exposition (ECCE), IEEEGoogle Scholar
  24. Zamani MA, Yazdani A, Sidhu TS (2012) A control strategy for enhanced operation of inverter-based microgrids under transient disturbances and network faults. IEEE Trans Power Deliv 27(4):1737–1747CrossRefGoogle Scholar

Copyright information

© Shiraz University 2020

Authors and Affiliations

  1. 1.Department of Electrical and Computer EngineeringUniversity of Sistan and BaluchestanZahedanIran

Personalised recommendations