4.5 Peak shaving
The ESS supplies the extra load when the mains import increases to more than the maximum import set point. When the load is less
than the maximum import set point, the ESS recharges.
You can enable the peak shaving charging limit with parameter 10724. When you have enabled this parameter, the ASC uses the
peak shaving set point as the mains charging limit. The ESS can charge from the mains, but if the power from the mains is more
than the peak shaving set point, then the ESS cannot charge from the mains. Use this parameter in peak shaving operations to
optimally load the mains feeder.
AUTO mode
1. Activate a start signal.
• Use a digital input or
• Use a time-dependent start command.
2. The ESS supplies the extra load when the mains import is more than the maximum set point for mains import.
3. The ESS recharges when the load is less than the set point.
SEMI-AUTO mode
1. Push the Start
button on the controller, and then push the Close breaker button to close the ESS breaker.
2. When the ESS is parallel to the mains, the ESS is controlled by the peak shaving set point.
Settings > Power set point > Mains power export and peak shaving > Day/night power set
point
Parameter
Text Range Default
7001 Mains power, Day -20000 to 20000 kW 750 kW
7002 Mains power, Night -20000 to 20000kW 1000 kW
7006 MPE/PS scale
1kW:1kW
1kW:10kW
1kW:100kW
1kW:1000kW
1kW:1kW
OPERATOR'S MANUAL 4189341343A EN Page 22 of 36
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