Photovoltaic and energy-storage microgrid news

Why is energy storage important in a dc microgrid?

The energy storage unit is essential to maintain the stable operation in the standalone mode of the integrated DC microgrid. When the system power changes, the bus voltage will also change. An effective control strategy for the energy storage unit in the microgrid is needed to stabilize the bus voltage within a specific range.

Can photovoltaic and electric vehicles charge in integrated DC microgrids?

The power of photovoltaic (PV) and electric vehicles (EV) charging in integrated standalone DC microgrids is uncertain. If no suitable control strategy is adopted, the power variation will significantly fluctuate in DC bus voltage and reduce the system’s stability.

Are PEVs a viable energy storage solution for a microgrid?

PEVs offer the advantage of serving as mobile energy storage units, contributing flexibility and resilience to the microgrid 26. However, the charging and discharging of PEVs require careful management to fulfill the energy demands of the microgrid while also addressing the requirements of individual PEV owners 27, 28.

How can a microgrid energy management strategy improve system stability?

Both of these energy management strategies require the use of communication, and too much communication can lead to poor system stability. To avoid excessive communication, Zubieta et al. presented a DC microgrid energy management strategy based on DC bus signals, which took the DC bus voltage as the basis for system operation mode switching.

Which microgrids provide energy resilience?

The 3.1 MW solar and 6.2 MWh battery microgrid portfolio will provide energy resilience as part of the Resilient Municipal Critical Facilities program. A fire station in Fremont is home to a prototype microgrid, developed by Gridscape Solutions. (Image: California Energy Commission) Image: California Energy Commission

What is a low-voltage microgrid?

In this paper, a typical low-voltage (LV) microgrid is considered, incorporating various DGs such as microturbines (MT), low-temperature fuel cells (PAFC), photovoltaic (PV) arrays, wind turbines (WT), and storage devices like lead-acid batteries 78.