Mapping of parameters to IEEE1547-2018

As IEEE 1547-2018 [1] has been widely adopted, Table 3 lists the mapping between the applicable properties from the standard to OpenDSS PVSystem and Storage elements.

Table 3: Mapping of Parameters between OpenDSS and IEEE1547-2018

OpenDSS	IEEE1547-2018	IEEE 1547-2018 Description
kWRated (for Storage)	Nameplate Active Power Rating	Active power rating in watts at unity power factor
kVA	Apparent Power Maximum Rating	Maximum voltamperes	apparent	power	rating	in
kvarMax	Reactive Power Injected Maximum Rating	Maximum injected reactive power rating in vars
kvarMaxAbs	Reactive Power Absorbed Maximum Rating	Maximum absorbed reactive power rating in vars
Not implemented as a specific property in the current version. Assumed equal to kWRated	Active Power Charge Maximum Rating	Maximum active power charge in Watts
Not implemented as a specific property in current version. Assumed equal to kVA	Apparent Power Charge Maximum Rating	Maximum apparent power charge rating in voltamperes. May differ from the apparent power maximum rating
kV	AC Voltage Nominal Rating	Nominal AC voltage rating in RMS volts

Note that for PVSystem element, there is currently no kWRated property. However, the property can be modeled with the “Limit DER Power Function”, by specifying an appropriate value to %Pmpp. Also note that, for Storage, IEEE1547-2018 states that both the active power charge maximum rating and the apparent power charge maximum rating may differ from their discharging/generation equivalent parameters. The current version of OpenDSS accepts only a single kWRated and a single kV A, which are assumed to be the same for charging and discharging states.

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