Abstract
Voltage instability is considered as one of the main threats to secure operation of power system networks around the world. Grid connected renewable energy-based generation are developing in recent years for many economic and environmental reasons. This type of generation could have significant impact on power system voltage stability given the nature of the primary source of generation and the technology used to energy conversion. This paper examines the impact of large-scale photovoltaic (PV) generation on power system voltage stability. A comprehensive model of large-scale PV generation in IEEE-14 bus test system has been used for the investigation. Various performance measures including critical eigenvalues of Q-V modal matrix, bus participation factor and loading margin (LM), are used to analyze the impact of PV generator on power system static voltage stability.
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