Enhanced Reliability Through Short Time Resolution Data

closed

Increased penetration of distributed energy resources (DER) are leaving power system operations vulnerable to the operating behaviour of a multitude of diverse, distributed generators.The Australian Energy Market Operator (AEMO) has identified a need for short time resolution data around voltage disturbances to understand DER behaviour and improve dynamic modelling. In this project, Solar Analytics will work with AEMO (customer) and Wattwatchers (hardware/firmware) to develop automated data acquisition and delivery. The project aims to increase visibility and improve modelling capability in a world-first analysis of individual load and generator responses in the event of short time resolution voltage disturbances.Key resultsThis project aimed to help AEMO manage the transition to an energy system with a high proportion DER. Analysis of data collected through Wattwatchers monitoring devices has resulted in several outcomes of system relevance, including:A new voltage ride-through test which has been incorporated into the new Distributed Energy Resource (DER) technical standardsA change in constraints on the South-Australia – Victoria Heywood InterconnectorA recommendation for managing minimum operational demand in South Australia, which led to the South Australian Smarter Homes regulationsEngagement with inverter manufacturers to review settings in fielded systemsUpdates to system models, including more accurate contingency calculations based on more accurate understanding of DPV responseInitiation of a similar program of analysis in the South-West Interconnected System.The project findings have resulted in significant changes made by AEMO and complementary research programs will help AEMO manage the system without requiring severe limits on DER hosting capacity. It is expected that the probability of a major system outage due to unexpected impacts of DPV has been reduced through the changes made as a result of this project and associated research.

High