Impact of High Penetration Renewable Energy Systems on Low-Frequency Oscillations

The side effects of producing electrical energy by the traditional ways that depend on fossil fuels are increased due to the rapidly rising energy demand in global. In recent decades, attention has shifted to integrating renewable energy systems (RES) to the power systems to reduce environmental side effects. However, this type of integration makes the power system control more complicated due to the volatile and variable nature of the RESs. Moreover, the topological changes of the power systems with the addition of RESs can negatively affect power system stability. Low-frequency oscillation is considered as one of the major concerns in the area of power system stability. This paper aims to investigate the impact of high penetration of RESs with different cases to the power systems. The considered RESs in this work are wind turbine and photovoltaic solar systems. These RESs are installed to 2-area Kundur power system to investigate the effects on low-frequency oscillations such as local and inter-area oscillations.