Power Quality Control of a PV-Assisted Realistic Microgrid Structure

The power quality-related challenges in microgrid operation and control are influenced by the voltage sag/swell, frequency, THD, and power factor as per the nature of local loads and the geographical location of distributed energy resources (DERs). The relationship between power quality and the set of these variables is non-linear in nature. To maintain a proper balance among the power quality parameters, conventional and static solutions are available in the power engineering market such as voltage regulators, battery backup, protection devices, uninterruptible power supply (UPS), etc. The biological-inspired techniques are also used to enhance the power quality of the microgrid like artificial neural network (ANN) based control keeping the boundaries of IEEE/IEC standards. The realistic PV-assisted microgrid model is considered in this chapter with the effect of line impedance on the power quality parameters. This model is extended to a large-size realistic microgrid structure for the feasibility of control methodology. The realistic microgrid structure is verified under the variation of load profile, solar irradiance, line impedance, and communication delay in breaker operation. The importance of power quality with protection and reliability is also discussed in this chapter for the motivation of the readers.