Timeline for Producers consumers balance in the grid
Current License: CC BY-SA 4.0
16 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Oct 28, 2019 at 0:43 | comment | added | Peteris | If we're talking about 10 second response, then I'd say that yes, for normal operation that (steam pressure in thermal or nuclear, water kinetic energy in a hydro plant) would be the "reservoir of power" from which the balance would be maintained, in addition to pure mechanical rotational inertia - in the case of major mismatches we'd see some other balance mechanisms triggered such as disconnecting parts of the grid; and for "fast balancing" on the scale of 5 minutes or on the scale of milliseconds again different physical aspects would dominate. | |
| Oct 28, 2019 at 0:18 | comment | added | curiousguy | @Peteris So the fast balancing is obtained by the difference between electric power and heat/pressure power? | |
| Oct 27, 2019 at 22:48 | comment | added | Peteris | @curiousguy almost but not exactly - in the short run there's a difference between instantaneous produced electricity (how much the generator is converting from mechanical energy to electric power at this very moment) and the generating capacity in the sense of how much extractable power is being produced by whatever is driving the turbine (steam, water, etc); a turbine might produce slightly less or more electricity than capacity temporarily as it speeds up/slows down; but changing generating capacity requires changes to the physical process that drives the turbine or adding new generators. | |
| Oct 27, 2019 at 16:22 | answer | added | Harper - Reinstate Monica | timeline score: 1 | |
| Oct 27, 2019 at 12:00 | history | tweeted | twitter.com/StackElectronix/status/1188425159088234498 | ||
| Oct 27, 2019 at 6:33 | history | became hot network question | |||
| Oct 27, 2019 at 0:29 | comment | added | curiousguy | @BrianDrummond Is "generating capacity" the same as produced energy? | |
| Oct 26, 2019 at 23:58 | answer | added | Dan Mills | timeline score: 11 | |
| Oct 26, 2019 at 23:20 | comment | added | user16324 | Nobody stores it : the frequency is slightly high and so is the voltage. (Or low, at other nimes) It's monitored, and generating capacity is added or removed to keep the drift within close limits. | |
| Oct 26, 2019 at 23:20 | answer | added | Transistor | timeline score: 5 | |
| Oct 26, 2019 at 22:59 | comment | added | curiousguy | @Hearth I mean in a pure simple grid w/ no fancy electric stuff, e-devices, smart-something-something... just a few industrial motors, lifts, and lights. Go back to the 50ties grid if you want. If perfect balance is not accomplished, it implies net energy level changes. Like an out of balance filling up emptying bathtub. | |
| Oct 26, 2019 at 22:51 | comment | added | Hearth | @curiousguy No one stores it, outside of comparatively tiny amounts stored in the capacitance and inductance of transmission lines and larger amounts stored in the rotational kinetic energy of turbines. Edit: Well, there are also the batteries used with PV arrays, I guess, and electric vehicles. | |
| Oct 26, 2019 at 22:39 | comment | added | curiousguy | Where does it go? Who stores it? | |
| Oct 26, 2019 at 22:32 | comment | added | user16324 | TL/DR : the supply frequency is a good indicator of the state of balance. In the UK right now it's 50.035 Hz, so lightly loaded (more supply than demand) | |
| Oct 26, 2019 at 22:30 | review | First posts | |||
| Oct 27, 2019 at 12:03 | |||||
| Oct 26, 2019 at 22:27 | history | asked | curiousguy | CC BY-SA 4.0 |