Microgrid Concepts
A Microgrid is a combination of interconnected loads and DER within clearly defined electrical boundaries, controlled as a single entity, and operating in parallel with the grid or in an intentional islanded mode.
A Microgrid provides a decentralized, digitized, and decarbonized alternative to expensive and polluting fuels.
A Microgrid is composed of:
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Electrical network: medium and/or low voltage, with the related protective and measuring devices.
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Microgrid management and control solution (such as EMS, PMS, SCADA)
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Grid
NOTE: The grid may not be present in case of pure islanded application, called as off - grid Microgrid. -
DER (such as PV, Storage, wind turbines, Genset and CHP)
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Loads
Microgrid Management System
Microgrid Management System consists of two major subsystems:
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Energy Management System (EMS): EMS is a software-based control system that oversees the operation of the entire Microgrid when the site is connected to the grid and optimizes the utilization of various DER within the system. The main goal of the EMS is to ensure efficient and reliable energy supply while managing the energy demand in the Microgrid.
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Power Management System (PMS): PMS is responsible for the real-time control and coordination of power flow within the Microgrid by managing the switching and islanding operations. The PMS manages the real-time control and coordination of power flow to ensure safe and stable operation.
In this guide, the EMO-L solution which is the PMS dedicated to large and critical Microgrid application is described. EMO-L is based on EcoStruxure Power Automation System solution (EPAS). For further information about the EPAS solution please contact Schneider Electric or consult the website to get more detailed information.