vlt/SwD/CIM/61968 Common Functions.md

61968 Common Functions

DER Group Formation and Management Functions

Function	Description	Chapter Reference
DER Group Creation	This function allows a software entity to define a logical group of DER and to exchange the definition of this group with other applications or businesses. The purpose of grouping is subsequent monitoring and management at the group level.	Chapter 6
DER Group Member Query	This function allows one entity to inquire from another to learn the current members of a DER Group.	Chapter 9
DER Group Deletion	This function deletes a previously created group	Chapter 10
DER Group Maintenance	This set of functions provides the ability to add, update, or delete members from a group.	Chapter 11

DER Group Capabilities and Monitoring Functions

Function	Description	Chapter Reference
Status Monitoring of DER Groups	This function allows the exchange of real-time status information for DER groups. This function addresses dynamic data, including present value and the present range of adjustability (i.e. the min/max dispatchable range of manageable parameters).	Chapter 13
Capability of DER Groups	This function allows the exchange of information indicative of the installed capability of a DER group in terms of the grid- supportive services that it is capable of supporting. This data is generally static, changing only as equipment changes are made, not varying in real time.	Chapter 12
DER Group Output Forecasting	This function allows the exchange of forecast information regarding the availability of real and reactive power from DER groups. Note: This function does not relate to how forecasts are determined (e.g. weather data, sky-viewing cameras, etc.) but only to how such information might be exchanged between entities.	Chapter 14
DER Group Historical Meter Data	This function allows for exchange of interval meter data that is indicative of the aggregate production of a group of DER.	Chapter 15

DER Group Limitation and Operational Boundary Functions

Function	Description	Chapter Reference
DER Group Maximum Real Power Limiting	This function sets limits on the aggregate power generated and/or absorbed by DER groups	Chapter 16
DER Group Ramp Rate Limit Control	This function sets limits on the rate at which DER group real and reactive power levels may rise and fall	Chapter 17
DER Group Phase Balance Limiting	This function sets limits on the phase imbalance for real and reactive power of DER groups	Chapter 18

DER Group Control Functions

Function	Description	Chapter Reference
Real Power Dispatch of DER Groups	This function allows the dispatch of real power to/from DER groups.	Chapter 19
DER Group Curve Settings	This function manages curve functions (e.g. volt-var control, watt-frequency control) for DER groups.	Chapter 22
Regulation Function	This function allows DER Groups to provide Regulation services to system operators and balancing authorities.	Chapter 24
Schedules for DER Services	As an alternative to real-time requests, this function allows the exchange of schedules for DER group services, such as the Real Power Dispatch function.	Integrated into Each Function
Ride-Through Service	This function allows event ride-through characteristics to be changed for a group of DER.
Energy Price-Based Management	This function enables DER groups to be provided with energy price information and to be configured to provide services based on price.	Chapter 25
Service Cost-Based Management and Bidding	This function (or data-exchange addition to other functions) enables queries regarding the availability of DER services on a cost-basis and also the offer/provision of services based on a cost.	Chapter 26
Voltage Regulation Settings	This function allows for adjustment of a target voltage regulating setting of a group of DER. This could be used, for example, in coordination with a conservation voltage reduction system.	Chapter 21
Connect/Disconnect Control	This function allows for remotely turning groups of systems on or off. Potential uses include maintenance, disabling of malfunctioning equipment, and anti-islanding.	Chapter 28

Potential Additional/Future Functions

Function	Description	Chapter Reference
Fast Up-Down Regulation Services	This function allows groups of DER to be rapidly dispatched (e.g. 4 seconds update rate) both up and down in real power in order to help regulate the system.
Dynamic System Voltage Stabilization Services	This function allows groups of DER to provide real and/or reactive power in response to the rate of change (dV/dt) of the service voltage amplitude at each DER. The behaviors would resist voltage fluctuations.
DER Group Mode Management	This function notifies groups of DER of changes to circuit configuration and other conditions that may merit a change in inverter modes.