Submission to Standards Australia on the proposed amendments to AS4777. 2 Grid connection of energy systems via inverters Inverter requirements

摘要: Determining appropriate default setpoints for voltvar and volt-watt response modes is complex and impacts on a diverse range of electricity industry stakeholders, and will ultimately require trade-offs across effectiveness, efficiency and equity grounds. In our view, volt-var and volt-watt set points should be conservative (that is, they only operate near the upper limit of the statutory voltage range) until and unless a robust evidence base is established that argues otherwise.We therefore suggest that the current power quality modes as specified in AS4777. 2-2015 should be retained under this current revision. However contrary to the current AS4777. 2-2015, we suggest that the volt-var mode should be enabled be default. Given that it doesn’t appear critical that these PQ response modes are updated under the current revision, we suggest that these modes could instead be reconsidered in the next revision of AS4777. 2. We understand that this next revision is intended to run in 2021 with a focus including cyber security