The charging of the storage devices will take place in and around the noon period when the generation from PV will be higher than the loads. The PV system will monitor the voltage at the PCC and whenever this voltage is found above a set point and reverse power flow is detected at PCC, the system will command the charge controller to start the battery charging. It is assumed that initially the battery SoC is at a fixed level. As long as the voltage remains higher than the set point at the PCC, charging will continue until the SoC reaches a threshold level, to avoid overcharging. For a given storage capacity of the battery, the rate of charging is to be selected
such that the battery capacity can be effectively used to reduce the voltage rise and also can be charged up to a substantial level to support the load when it is needed. For instance, if the charging rate is too high, the battery SoC may be near its overcharging limit earlier than the expected time, and may not be able to charge any more. This would bring back the voltage rise problem in the feeder. On the other hand, if the rate is too low, the battery may not be charged up to a level by which it can be used for a reasonable amount of peak shaving.
The charging of the storage devices will take place in and around the noon period when the generation from PV will be higher than the loads. The PV system will monitor the voltage at the PCC and whenever this voltage is found above a set point and reverse power flow is detected at PCC, the system will command the charge controller to start the battery charging. It is assumed that initially the battery SoC is at a fixed level. As long as the voltage remains higher than the set point at the PCC, charging will continue until the SoC reaches a threshold level, to avoid overcharging. For a given storage capacity of the battery, the rate of charging is to be selected
such that the battery capacity can be effectively used to reduce the voltage rise and also can be charged up to a substantial level to support the load when it is needed. For instance, if the charging rate is too high, the battery SoC may be near its overcharging limit earlier than the expected time, and may not be able to charge any more. This would bring back the voltage rise problem in the feeder. On the other hand, if the rate is too low, the battery may not be charged up to a level by which it can be used for a reasonable amount of peak shaving.
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