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C.22 Event randomization

The following are examples of how to set the randomization parameters to accomplish different randomization strategies. The attributes of an event that define its behavior in time are the “interval” that defines the “start” and “duration” of the event, “randomizeStart”, and “randomizeDuration”. The latter two controlling the randomization behavior. For these examples, we will assume that we are looking at DRLC events and that the events are causing reductions in load over a large population. The graphs are indicating the aggregated load for the entire population for a single event.


C.22.1 Simple event


image

Figure C.21—Simple event, no ramp up, no ramp down


NOTE—This use case is NOT targeted for large population control.


Table C.23—Simple event values


Attribute

Value (seconds)

start

0

duration

3600

randomizeStart

0

randomizeDuration

0


C.22.2 Event with positive randomized duration


image

Figure C.22—Event with positive randomization duration


Table C.24—Positive duration randomization values


Attribute

Value (seconds)

start

0

duration

3600

randomizeStart

0

randomizeDuration

300


C.22.3 Event with positive randomized start


image

Figure C.23—Event with positive randomization start


Table C.25—Positive start randomization values


Attribute

Value (seconds)

start

0

duration

3600

randomizeStart

300

randomizeDuration

0


C.22.4 Event with negative randomized start


image

Figure C.24—Event with negative randomized start


Table C.26—Negative start randomization values


Attribute

Value (seconds)

start

0

duration

3600

randomizeStart

−300

randomizeDuration

0


C.22.5 Event with positive randomization and finishing in one hour


image

Figure C.25—Positive randomization in an hour


Table C.27—Positive randomization in one hour values


Attribute

Value (seconds)

start

0

duration

3300

randomizeStart

300

randomizeDuration

0


C.22.6 Event with negative randomized start and at least one hour duration


image

Figure C.26—Event with negative start in one hour


Table C.28—Negative start in one hour values


Attribute

Value (seconds)

start

0

duration

3900

randomizeStart

−300

randomizeDuration

0


C.22.7 Event with randomized start and long ramp up


image

Figure C.27—Randomized start and long ramp up


Table C.29—Randomized start with long ramp up values


Attribute

Value (seconds)

start

0

duration

3600

randomizeStart

300

randomizeDuration

300


C.22.8 Event with positive randomized start and fixed end time


image

Figure C.28—Randomized start and fixed end time


NOTE—This scenario is NOT possible with the current set of parameters. For grid stability “snap” back on is not a desirable use case.