Impact of Solar Photovoltaic Penetration on Voltage Stability of Power Network

摘要

Power system voltage instability is major threats to reliable operation of power system networks. Nowadays maintaining a stable power system is therefore a challenging issue. If we consider economic and environmental concerns, grid tied renewable energy-based generation are growing over the past few years. These kind of generation can have both advantages and disadvantages. The most commonly used renewable energy resource is solar photovoltaic. This paper mainly focuses on voltage stability analysis of power network when penetrated with solar photovoltaic (PV). For the investigation, a comprehensive model of solar PV penetration in IEEE-14 bus test system has been used. Load flow study has been performed to analyse the voltage stability of the system. Critical eigenvalues of Q-V modal matrix is used to examine the effect of PV generator on voltage stability of power system. The effects of scattered and concentrated PV penetration on power network are also analyzed in this paper.