The relationship between photovoltaic and microgrid

How can a microgrid improve the reliability of solar PV?

In order to overcome the problems associated with the intermittency of solar PV and enhance the reliability, energy storage systems like batteries and/or backup systems like diesel generators are commonly included in the microgrids [11, 12].

Do PV based microgrids have a negative environmental impact?

Moreover, battery energy systems are also reported to have negative environmental impacts, which is also required to be taken into consideration while sizing/designing a PV-based microgrid [48 - 50]. In Figure 3, the common design considerations for PV based microgrids have been summarised.

Why do we need a PV-based microgrid?

The increasing demand for reliable and clean energy promotes the installation of PV-based microgrids. Appropriate sizing of microgrid components, that is, number and size of PV modules, batteries, DGs and associated power electronic devices determines the efficient and economic design of the microgrid.

Can a microgrid be supported from the grid?

This allows the microgrid to be supported from the grid in critical situations, although supplying loads from the RES has priority, regardless of whether the system will demand energy from the grid and/or the amount of energy to be demanded from the grid can be configured with the proposed energy management method.

Are microgrids a viable alternative to the power grid?

Apart from the grid connected ones, microgrids are becoming an alternative means for electrifying rural communities where the extension of the power grid are not possible and the transport of the fuels is costly and difficult [6, 7].

How does a microgrid system work?

The DC bus is connected to the AC bus through the DC/AC inverter. The energy management system tracks load demand, available PV power and battery energy level, and it controls charge/discharge status of the battery and decides whether to demand energy from the grid. Figure 2. The architecture of the microgrid system.