An astute reader noted to me about the Central-to-Southern constraint binding today in Queensland, one of the rare days where I did not have an ez2view dashboard display alerting me to its occurrence.
However I do have a brief period now to wind back the clock through “Time Travel” in the software to snapshot the 12:25 dispatch interval as an example of what happened:
The particular constraint bound (Q_CS_1750) is of the form Left Hand Side (LHS) ≤ Right Hand Side (RHS), with the Left Hand Side containing all the terms that NEMDE (the dispatch engine) tries to optimize – which in this case means reduce or “constrain down” the output:
Paul was one of the founders of Global-Roam in February 2000. He is currently the CEO of the company and the principal author of WattClarity. Writing for WattClarity has become a natural extension of his work in understanding the electricity market, enabling him to lead the team in developing better software for clients.
Before co-founding the company, Paul worked as a Mechanical Engineer for the Queensland Electricity Commission in the early 1990s. He also gained international experience in Japan, the United States, Canada, the UK, and Argentina as part of his ES Cornwall Memorial Scholarship.
A starting list of a number of factors that combined to deliver sustained higher wholesale electricity prices in the Queensland region across the weekend of Saturday 12th January and Sunday 13th January 2013.
Queensland LNG exports are now in full swing. At the time of writing (18 December) QCLNG has exported 79 LNG cargoes comprising 5.2 million tonnes (Mt) of LNG since the first cargo in January 2015.
Spot prices spiked across mainland regions this evening – firstly at 17:55 (above $1,000/MWh). and then at 18:00 (up towards $15,000/MWh). Here’s a first look.
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