RE: Shipments/EBITDA24 Oct 2021 23:21
Kev, as I Understand things the original power was from the generators.then they got grid connection, which I think was cheaper. Generally, that for those with generation capacity, its not to say that you would solely run from the grid once connected up. I once worked in a place that had two submarine diesels to generate electricity ; these could be used to power the place, partially power the place, or even (if demand was low at the site) sell some back to the grid, also in the world of fluctuating price it could some times jus5 be cheaper to run off the grid.
Sometimes it not just about a generator being a backup to the grid, there’s all sorts of combinations.
However, it might have been (andIreally don’t know) that at Wres they had gone to reliance on the grid, that failed to some extent due to storms ( not uncommon anywhere in the world) and they ran the generators up and did not wrk well. That may have been that if they had not used them for a goodly while and fired them up they did not work correctly(( for number of reasons - wrong buttons pressed, start sequence, load etc etc) or if they were running in parallel with the grid there’s a question of synchronisation together, also you can get issues with power lag where the current is out of phase with the voltage ( where induction or capacitance caused b6 various bits of kit causes problems) or you can get an unbalanced load (by having too much demand on one phase or boosting on one or two phases in generation ) in a three phase system and in that case the neutral which is expected to have next to zero current ( the three phases would cancel each other out in a balanced system) could find itself overloaded by too much current.( gets hot and failure follows) just simply matching the phases from the supply and generator can be tricky
In essence, I have no idea why they had problems with the supply at the time, but I have known generators to have problems, I even remember a generator (used as a 440 converter) blowing up because the technician got the start up sequence wrong. There’s lots that can go wrong when running on a two supply system.
And don’t mention the tailings lol.