Hi Trelax
My experience in Power Plants was back in the seventies and eighties, mainly in France where the whole power grid network
is totally inter connected, each point having at least two or more links which makes almost impossible the kind of situations still seen recently in USA. I beleive this has to do with our French production and distribution network being nationalised back in 1945 while in USA production and distribution remain private network not yet fully interconnected. My work was the commissioning of turbo generators in the range of 250MW up to 1,200 MW. I also worked as consulting Engineer for Liquified Natural Gas from 1969 until 1982 for Sonatrach in Algeria and Total France in Indonesia. For Total plants in Indonesia we bought our gas turbines and gas compressors from SOLAR in Sand Diego and YORK. I enjoyed several meetings with Engineering teams from KELLOG, CHEMICO, BECHTEL, TECHNIP, PRITCHARD RHODES and made evaluations on machines offered by A.B.B., Sultzer, A.E.G., Siemens, G.E., Brown & Roots, Mitsubishi, RR, York, Carrier.
Although I did not work with SCADA I understand that it is basically a data acquisiton and data management system allowing at given time to make the right decision. For instance in a production and distribution electrical power network make the most economical, yet safest choice on which power plant to boost or reduce power output at a given time. At 18:00 in summer all consumer are back home and will switch on cooking and TV and aircon there is a peak in demand. All power production will be called on, hydraulic, conventional steam power generators, nuclear generators, gasturbine combined cycles and so on, at 22:00 the foottball macth is over the whole america goes to sleep, surge in power available on the grid and depression in the water distribution system since all houses will flush the toilets litterally at the same time. The power generation company has a choice to lower the power output, depending on the seasons they may choose to shut down the hydraulic power plant and let the water level raise during the night, they will also shut down the gas turbines since they have more economical production plants, they will not reducte the power output from the nuclear generators since the nuclear plants have a very high inertia factor and a slow response time. So many parameters for each production plant and also taking proximity and transportation cost can be feeded to a SCADA system to make the best economical and safest decision at each moment of the 24 hours day/night cycles. Adding the seasons effect it becomes very complex.
SCADA can solve in real time this complex equation based on parameters it has been programmed with.
Oufff sorry for my long blabla,
Happy Easter to all HIET shareholders
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