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Fault Ride-Through Capability Enhancement of PV System with Voltage Support Control Strategy

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DOI: 10.4236/ojapps.2013.32B006    3,887 Downloads   6,274 Views   Citations

ABSTRACT

With continuously increasing of photovoltaic (PV) plant’s penetration, it has become a critical issue to improve the fault ride-through capability of PV plant. This paper refers to the German grid code, and the PV system is controlled to keep grid connected, as well as inject reactive current to grid when fault occurs. The mathematical model of PV system is established and the fault characteristic is studied with respect to the control strategy. By analyzing the effect of reactive power supplied by the PV system to the point of common coupling (PCC) voltage, this paper proposes an adaptive voltage support control strategy to enhance the fault ride-through capability of PV system. The control strategy fully utilizes the PV system’s capability of voltage support and takes the safety of equipment into account as well. At last, the proposed control strategy is verified by simulation.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

D. Zeng, G. Wang, G. Pan and H. Li, "Fault Ride-Through Capability Enhancement of PV System with Voltage Support Control Strategy," Open Journal of Applied Sciences, Vol. 3 No. 2B, 2013, pp. 30-34. doi: 10.4236/ojapps.2013.32B006.

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