Probabilistic Dispatch Assessment.
Half-hourly security-constrained dispatch for a full year, with the grid treated as a real constraint.
A security-constrained dispatch that finds the cheapest way to run the system each half hour, within thermal, voltage and N-1 limits. When a circuit overloads it redispatches straight away, with batteries, electrolysers and interconnectors in the same solve.
Why it matters nowOn saturated networks, curtailment is no longer occasional. A project's value depends on how it actually runs once the grid binds, not on its nameplate. PDA shows how it runs, half hour by half hour.
The generation stack, resolved every half hour.
A representative week of security-constrained dispatch. When a monitored circuit binds, SCED picks the cheapest redispatch over involuntary load shedding, every time.
Figures from an example run on a test network.
SCED chooses redispatch over load shedding every time, and the slack variables show where new transmission, flexibility or interconnection pays back fastest.