Recycling a comment from RobK in a previous thread on the renewable road to ruin. He reports a talk by an electrical engineer, Kate Summers of Pacific Hydro. She has excessive enthusiasm for renewable energy, especially hydro (which is cheating), but the most important take-home that I can understand is the massive spinning turbines are under huge mechanical stresses due to fluctuating voltage that is not being controlled properly in the integrated system. This will increase downtime and unscheduled outages and shorten their working lives.
Comments and further explanation are invited from qualified Cats, I took several pages of notes but will not take the time to listen again or attempt to improve on RobK and any others who are prepared to help.
Part of the problem that will appeal to students of catallaxies is her claim that the centralised control and monitoring in the integrated system fails compared with the decentralised controls in stand-alone systems.
Another vital take-home from the first or second question was the observation that among the 33 senior managers of the four regulatory agencies there are 3 with science or engineering qualifications.
Kate Summers “Power system control or market control of a power system: Is there a fundamental loss of power system control?”
On Wednesday 15th August 2018 I was happy to speak at University of Melbourne’s Climate and Energy College about a topic that I see as a very important one to the ongoing stability of the electricity grid (and hence to the continuation of the energy transition).
As I note during my presentation, it seems to me that we have moved from centralised planning but distributed control, to a market with decentralised planning but centralised control. This is apparent, for instance, in market provisions for ancillary services. I am not sure that we all understand the implications of this.
This is the commentary by RobK.
An interesting 60min presentation looking at an aspect of FCAS dealing with hunting of frequency control partially caused by poor integration of digital and rotory manchine control. Some interesting comments on the lack of engineering input to system design.
Presented by a power engineer with RE background. There are many other issues than mentioned here but interesting insights into the systems workings.
It seems worse than I expected.
At 6am Wind and Other were delivering 13% of the 20GW demand.