Examples - S&C PureWave SMS-250 Operation And Maintenance

Power Scheduling Guide

Examples

20 S&C Instruction Sheet 659-540
Profile 1:
A pro le for charging for 10 minutes at 250 kW and then resting back to 0 kW after this
time would be as follows:
1. Starting Power: -250 kW
2. Section 1 Duration: 10 min
3. Section 2 Power: -250 kW
4. Section 2 Duration: 0min
5. Section 3 Power: 0 kW
6. Section 3 Duration: 0 min
7. End Power: 0 kW
Profile 2:
A pro le for charging for two hours at 250 kW and then immediately discharging at 250
kW for two hours would be as follows:
1. Starting Power: -250 kW
2. Section 1 Duration: 120 min
3. Section 2 Power: -250 kW
4. Section 2 Duration: 0 min
5. Section 3 Power: 250 kW
6. Section 3 Duration: 120 min
7. End Power: 250 kW
Profile 3:
A pro le for charging for two hours at 250 kW and then immediately discharging for
two hours starting at 250 kW and ramping down to 0 kW would be as follows. (Note:
The system would linearly reduce the discharge power from 250 kW to 0 kW over a
two-hour period, so at one hour the discharge power would be 125 kW.)
1. Starting Power: -250 kW
2. Section 1 Duration: 120 min
3. Section 2 Power: -250 kW
4. Section 2 Duration: 0 min
5. Section 3 Power: 250 kW
6. Section 3 Duration: 120 min
7. End Power: 0 kW
After creating the desirable profiles to use, configure the days and times the
particular profiles should run within the Week Setup screen.
Note to User: If the schedule ends in a value different from 0 kW, the schedule
will keep (in the case of the Profile 2 example) discharging until it runs out of
battery power or meets another schedule. To command it to stop, change the power
mode to Commanded Power at 0 kW.
Figures 25 and 26 on page 21 show examples of how the profiles can be created
and seen graphically in any desired fashion. S&C recommends creating different
charging profiles in Profiles 1-10 and different discharging profiles in Profiles 11-20,
each having an End Power value of 0 kW to ensure the system sits in idle—neither
charging or discharging—at the end of a schedule.