Members are advised that the updated AS/NZS 4777.2:2020 Grid connection of energy systems via inverters Part 2: Inverter requirements, is now available here on TKB to view.
The differences between this and the previous edition include, but are not limited to, the following:
a) Revision of sustained frequency response.
b) Revised set-points and limits to match electricity distributor and grid operator requirements.
c) Revision of provisions for demand response and power quality response modes.
d) Inclusion of requirements for electrical safety of non-PV energy sources in accordance with IEC 62477-1.
e) Inclusion of requirements for improved withstand capabilities including multiple voltage disturbances, rate of change of frequency and voltage phase shift.
f) Inclusion of requirements for measurement system accuracy and functional prioritization.
g) Inclusion of requirements for stand-alone inverters.
h) Inclusion of requirements for generation limit and export limit control function.
i) Revised and expanded testing procedures.
Please note that AS/NZS 4777.2:2015 will also remain current until 12 months after the date of publication of the 2020 version (ie. December 2021).