Voltage Stability of Low-Voltage Distribution Grid with High Penetration of Photovoltaic Power Units

Majid Ghaffarianfar and Amin Hajizadeh
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Majid Ghaffarianfar: Department of Electrical and Robotic Engineering, Shahrood University of Technology, Shahrood 3619995161, Iran
Amin Hajizadeh: Department of Energy Technology, Aalborg University, 6700 Esbjerg, Denmark

Energies, 2018, vol. 11, issue 8, 1-13

Abstract: Voltage stability analysis of power distribution systems with high photovoltaic (PV) penetration is a challenging problem due to the stochastic generation of a solar power system. Voltage stability is an important benchmark for defining PV’s penetration level in active distribution networks considering loading capacity. The massive integration of PV power units, the effect of distribution system characteristics, like high ratio of R/X, and the reported collapses in power networks come up in serious studies that investigate their impact and upcoming problems on distribution networks. Therefore, this paper proposes analytical voltage stability and it is implemented on IEEE 34 nodes radial distribution systems with 24.9 kV and 4.16 kV voltage levels. In this regard, in addition to given properties in stability and power loss analysis, a penetration coefficient for PVs is considered. Simulation results prove that the applied method can illustrate the positive and negative effects of PV in distribution networks.

Keywords: voltage stability; distribution grids; PV penetration; loading capability (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
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Citations: View citations in EconPapers (9)

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