Automatic voltage control of microgrid

What is microgrid control?

Microgrids’ control purposes are to maintain stable system operation, regulate low voltage, and equalize load sharing among distributed generators per unit under steady-state conditions (DGs). Local control is a good energy management technique in a hybrid microgrid.

What is a dc microgrid?

The DC microgrid also consists of distributed generators, constant power load (CPL), AC loads with the inverter, and resistive loads. Different load variations are executed to validate the performance of the proposed controller in terms of accurate power sharing and voltage control capabilities.

What is a hybrid microgrid controller?

The controllers are designed for application to hybrid microgrids with battery energy system control to enhance the MG voltage and frequency under different system load operations and different solar irradiation.

How to solve dc microgrid control problems in a distributed manner?

A new voltage compensation mechanism is presented in this study to resolve the control issues of DC microgrid in a distributed manner. In this mechanism, a fractional-order voltage compensation term is used in the outer controller loop which eliminates the voltage deviation in the steady-state condition.

Is local control a good energy management technique in a microgrid?

Local control is a good energy management technique in a hybrid microgrid. In low-voltage microgrid applications, however, nominal voltage reference offsets and unequal connecting cable resistances will require a trade-off between voltage regulation and load sharing.

What is microgrid voltage?

The microgrid voltage at the PCC is kept at its rated value as presented in Fig. 21. The microgrid supplies the local load when it is switched to islanded operation due to some network event such as a fault on the utility grid. Once the fault is cleared, the microgrid has to be reconnected to the utility grid to restore normal operation.