Schedules use relative time, so that increasing time values are the delta seconds from the initial time value. The actual start date/time replaces the initial time value when the schedule is activated. A ramp rate sets the rate at which the function or mode in one time period moves to the function or mode in the subsequent time period, while the ramp type indicates how the ramp is to be understood. A stop time indicates when the schedule is deactivated. Schedules can be used to allow even more autonomous control of the behavior of DER equipment. They may be sent ahead of time, and then activated at the appropriate time. Schedule components The interrelationship of schedule controllers, schedules, and schedule references, with some example settings are shown in Figure 11. These components are described as: Electrical Connectivity Point (ECP) manager: An ECP manager handles one or more DER unit controllers that provide energy through that ECP. It is expected that the ECP manager will handle the schedule controllers for its interconnected DER units. Schedule controllers: One or more schedule coordinators may be available at the ECP. Each schedule controller can control multiple schedules so long as they are not running at the same time. The schedule controller indicates which schedule is currently or running. For one schedule controller, only one schedule can be running. Schedules: Each schedule must have a non-zero identifier that is a unique schedule identity within the ECP. A schedule consists of time periods of arbitrary length that reference delta time from the initial entry. Schedule references: Each entry in a schedule references a specific value, a mode, or a function. Configuration parameters indicate the units and other characteristics of the entries. Values are direct settings, such as maximum watt output. These are absolute values or a percentage, to be used primarily where specific values are needed. are the settings and arrays of independent and dependent variables that manage output through algorithmic calculations, such as the volt-var modes Functions are the combination of settings for immediate control commands, such as INV3, adjust factor. These usually involve percentages of maximum to allow DER systems with different capabilities to respond appropriately. Figure 11 Interrelationships of schedule components –
Schedules use relative time, so that increasing time values are the delta seconds from the initial time value. The actual start date/time replaces the initial time value when the schedule is activated. A ramp rate sets the rate at which the function or mode in one time period moves to the function or mode in the subsequent time period, while the ramp type indicates how the ramp is to be understood. A stop time indicates when the schedule is deactivated. Schedules can be used to allow even more autonomous control of the behavior of DER equipment. They may be sent ahead of time, and then activated at the appropriate time. Schedule components The interrelationship of schedule controllers, schedules, and schedule references, with some example settings are shown in Figure 11. These components are described as: Electrical Connectivity Point (ECP) manager: An ECP manager handles one or more DER unit controllers that provide energy through that ECP. It is expected that the ECP manager will handle the schedule controllers for its interconnected DER units. Schedule controllers: One or more schedule coordinators may be available at the ECP. Each schedule controller can control multiple schedules so long as they are not running at the same time. The schedule controller indicates which schedule is currently or running. For one schedule controller, only one schedule can be running. Schedules: Each schedule must have a non-zero identifier that is a unique schedule identity within the ECP. A schedule consists of time periods of arbitrary length that reference delta time from the initial entry. Schedule references: Each entry in a schedule references a specific value, a mode, or a function. Configuration parameters indicate the units and other characteristics of the entries. Values are direct settings, such as maximum watt output. These are absolute values or a percentage, to be used primarily where specific values are needed. are the settings and arrays of independent and dependent variables that manage output through algorithmic calculations, such as the volt-var modes Functions are the combination of settings for immediate control commands, such as INV3, adjust factor. These usually involve percentages of maximum to allow DER systems with different capabilities to respond appropriately. Figure 11 – Interrelationships of schedule components
CPUC_Rule_21_Phase_1a_DER_Functions_v1.docx