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.