IEC SRD 63443-1 This part of IEC SRD 63443 covers the terms and definitions, system architecture, and service scenarios of distributed energy resource aggregation business (ERAB), whose definition is to restrain or elevate the power generation of distributed energy resources (DERs) and power demands of controllable loads (CLs) at customer premises in accordance with the performance measurement by the metering device at the point of common coupling (PCC), allowing real-time data access from customer premises and the request of the transmission service operator (TSO), distribution system operator (DSO), electricity supplier, and energy exchange.

In conventional power systems, the balance between supply and demand is adjusted by the transmission service operator (TSO) and distribution system operator (DSO) controlling the power generation facilities on the supplier side, enforcing the same amounts of demand and supply at the same time on TSO and DSO. However, the widespread use of DERs and CLs with network access has enabled them to be configured as virtual systems on the demand-side. In addition, real-time data access to a metering device allows measurement of the performance of aggregating these devices using trustworthiness data. Similar to the drastic changes in the electricity system, the ERAB provides a new service scenario that contributes to the balance of supply and demand within the electricity system. The ERAB coordinates the requests and reports from/to ERAB participants, such as the TSO, DSO, and electricity supplier, and manages the remote control of the DERs and CLs executed through the ERAB controller that provides site-specific DER management. The ERAB provides two types of services: "demand restraint" and "demand increase." The former model removes tight supply and demand by effectively shaving or shifting the peak demand. The latter model contributes to the effective use of energy by shifting the demand against the excessive power supply owing to the expansion of the introduction of renewable energy, as well as to the improvement of energy autonomy by aggregating the DERs and CLs with a power storage function.

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