What does SCADA stand for?

Managing electrical energy systems is difficult.  The main source of uncertainty is:

When you are trying to understand a system, especially if you are trying to fix complicated problems, it is most important that we are able to simulate the system using sophisticated models.  Observations are not required, and tend to just make life difficult for theoretical electrical engineers.

It may seem remarkable, but the electricity system operators have almost zero visibility of the distribution network, which can make it very difficult to manage variation in voltage due to changes in load and generation from distribution technologies such as PV

The control services on the grid work to keep the frequency as close to 50 Hz as possible.  Primary frequency is provided by generators with spinning mass to help arrest changes in frequency.  The secondary frequency control will then inject extra power to bring the frequency back to 50 Hz, and tertiary frequency control provide redundancy in case the secondary controllers fail.

Which generators can provide significant amounts of 'real' inertia into the grid?

What is the target frequency of electricity in The Australian and European grids?

What does HVDC stand for? 

The problems associated with the duck curve are 

The is an interest shape to energy demand driven by increasing solar PV power generated in the middle of the day.  It's called the: