Photovoltaic (PV) systems face several storage issues due to their intermittent nature. These issues include stability, voltage regulation, and other power quality problems. To mitigate these challenges, energy storage systems are widely utilized in power systems.
The major challenge faced by the energy harvesting solar photovoltaic (PV) or wind turbine system is its intermittency in nature but has to fulfil the continuous load demand , , , .
The challenges of large-scale energy storage application in power systems are presented from the aspect of technical and economic considerations. Meanwhile the development prospect of global energy storage market is forecasted, and application prospect of energy storage is analyzed.
The present paper aims at reviewing some technical issues on the current state of PV systems. These issues include energy policies, various cell technologies, MPPT and converter/inverter technology, energy management and scheduling techniques, reliability, power quality and control systems. 1. Introduction
Solar PV introduces potential unbalances in generation and demand, especially during off-peak periods when it generates more energy and peak periods when load demand rises too high. This intermittent and irregular nature of PV generation makes grid management a difficult task.
Photovoltaic (PV) systems have reliability issues that can negatively impact the distribution grid, especially when the PV penetration level increases.