Active power response following frequency drop (49Hz) and raise (51Hz) with a 4Hz ROCOF for a synchronous generator

Frequency response of PSS transfer functions for small signal tuning

Rotor angles of various synnchronous generating units across the network following a critical contingency

PSSE SMIB model testing for under voltage between 70% and 80% of normal voltage for period of 2s monitored at Point of Connection

​The graph above was derived based on half hourly operational demand from July 2019 to June 2020. The graph shows the maximum demand profile for each month over a 24-hour period. For each month, the demand increased during the morning and evening peaks. For morning peaks, the demand increased at a more or less similar rate for each month. However, during summer, the evening peaks started to increase earlier and over a longer period as compared to other seasons.
 

The graph above was derived from the Victorian Regional Reference Prices (RRP) from July 2019 to June 2020. The NEM dispatch price changes every 5 minutes and settled on every 30 minutes. From July to mid October 2019, the average prices between 17:30 and 21:30 are above $150/MWh. Whereas during summer 2019/20 (Dec 2019 to Feb 2020), the window of average prices above $150/MWh has been brought forward to between 14:30 and 19:30. 
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Generally speaking, the variables that can cause the trading price to go up are high demand due to ambient temperature (hot summer day or cold winter day), generator outages, network outages, low wind and solar generation.