Microgrids are the keystone as we move toward use of more distributed energy resources (DERs). And they offer a variety of ways to increase your facility’s resiliency, efficiency, and sustainability. But how does it all work, and how can you use this technology to optimize your current existing operation?
Microgrid technologies enable cooperation between DERs. But specific technologies must be incorporated to ensure the highest standard of protection and control. Schneider Electric covered this topic in depth in a recent whitepaper, titled, “How New Microgrid Technologies Enable Optimal Cooperation Between Distributed Energy Resources.”
The report explores how to connect on-site generation and storage assets with traditional grid energy, and delves into specific microgrid technologies.
Microgrids. We often think of them as a group of independent functional componants. But according to the report, they often result from the association of subsystems acting in coordination. These systems include sensors, meters, and network protection, controls at the distributed energy resource (DER) level, and more.
These microgrids are often employed to meet today’s energy expectations, such as resiliency and CO2 reduction. But according to the white paper, “specific performance objectives have to be solved through technical advances in systems’ control and protection innovation such that cooperation of distributed energy resources toward a shared objective can be fulfilled.”
There are also specific constraints for this protection strategy. In fact, microgrids bring up new challenges from protection system designs because of the association of local distributed generation and capability to island from the main grid. Schneider Electric covers a variety of microgrid operating modes in the recent report, including when energy is supplied by the grid only, as well as by a local energy source and storage, and how to address specific challenges within these modes.
And when adopting any new technology, businesses must address the question of quality – in this case, power quality. Since microgrids balance energy generation and demand in real time, “this requires fast and accurate measurements of active and reactive powers, frequency, current, and voltage levels in order to enable proper power quality control and automated operation.” Some of the most important power quality measures include harmonics, frequency variations, transients, and voltage sags and swells.
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