The lack of competing grids is itself the result of regulation.
No, it's a consequence of physics.
Do you know what happens when two alternating current systems which are not in phase exist in close proximity to one another?
They fight. Literally. The phase angle between the two power signals resists each other. They don't even have to be physically attached, simply running two out of phase ac systems close to each other will cause some induced load from the opposed phases because wires are not perfect conductors.
If they connect, well...
Whichever system has more inertia will win (assuming the contact point survives for more than a few milliseconds). The other system's phase angle will be physically (violently) dragged up or down to the phase angle of the system that has more spinning mass. In effect, the generators which are out of phase will cease to be generators and momentarily become electric motors. This has profoundly bad consequences for both systems. In extreme cases it can cause turbine blades to fucking snap. Although realistically all it will do is cause a whole lot of breakers and safety relays to operate and cause a blackout.
Because they cannot coexist out of phase. As long as the phase angle isn't in sync, they aren't "powering" things, they're fighting each other.
This is why the proposed junction between the three grids (Tres Amigas Superstation) is designed around these giant fucking 20 mile long superconductive HVDC cables. Because to even think about having the grids coexist with each other, you first have to strip out phase angle entirely and convert the energy to DC.
No, it's a consequence of physics.
Do you know what happens when two alternating current systems which are not in phase exist in close proximity to one another?
They fight. Literally. The phase angle between the two power signals resists each other. They don't even have to be physically attached, simply running two out of phase ac systems close to each other will cause some induced load from the opposed phases because wires are not perfect conductors.
If they connect, well...
Whichever system has more inertia will win (assuming the contact point survives for more than a few milliseconds). The other system's phase angle will be physically (violently) dragged up or down to the phase angle of the system that has more spinning mass. In effect, the generators which are out of phase will cease to be generators and momentarily become electric motors. This has profoundly bad consequences for both systems. In extreme cases it can cause turbine blades to fucking snap. Although realistically all it will do is cause a whole lot of breakers and safety relays to operate and cause a blackout.
Because they cannot coexist out of phase. As long as the phase angle isn't in sync, they aren't "powering" things, they're fighting each other.
This is why the proposed junction between the three grids (Tres Amigas Superstation) is designed around these giant fucking 20 mile long superconductive HVDC cables. Because to even think about having the grids coexist with each other, you first have to strip out phase angle entirely and convert the energy to DC.