DANSK DSF/IEC TR 61850-90-23 ED1 PDF

This technical report, which is part of the IEC 61850 series, describes some use cases to support monitoring and control of microgrids. The information requirements to support these use cases are listed with a mapping to existing or proposed data elements. Microgrids considered in this document are alternating current (AC) electrical systems with loads and distributed energy resources (DER) at low or medium voltage level. According to IEC 62898-1, microgrids are classified into isolated microgrids and non-isolated microgrids. Isolated microgrids have no electrical connection to a wider electric power system. Non-isolated microgrids can act as controllable units to the electric power system and can operate in either grid-connected mode or island mode. From a grid operation perspective, when it is connected to the grid, a microgrid has many similarities with a connected distributed energy resource. From an information modelling perspective, a microgrid can be considered as a specific type of DER that has additional capabilities. These additional capabilities include those needed to run in an isolated, island mode; and the capability to potentially connect and disconnect from an area electric power system.