New Zealand Power Grid Simulation

At the outer edges of the grid, we have the generation sources which keep the lights on. They are split into two main categories:

• Baseload Generation (Hydro & Coal): On the left, a Hydro Dam feeds two independent turbines. On the far right sits a heavy-duty Coal Power Station. These are your reliable, dispatchable power sources. The water reserves in the dam and the fuel pile must be managed for the coal plant to ensure they don't run dry during peak hours.

• Renewable Energy (Solar & Wind): On the right, feeding into the network, are a Solar Farm and a Wind Farm. These provide excellent clean energy to the grid, but they are entirely at the mercy of the weather. If the wind dies down or cloud cover rolls in, their output will drop, the operator spin up the hydro or coal plants to compensate.

Power generated at the edges of the map must be routed and transformed before it can be used.

• Substation 1 & Substation 2: Think of these as the main traffic hubs of the grid. Substation 1 handles the influx of power from the Hydro Dam, while Substation 2 acts as the gathering point for the Coal, Wind, and Solar generation. These substations monitor the total load passing through them; if too much power is forced through a single substation at once, its primary transformer will overload and trip the entire hub offline.

The center and bottom right of the board represent the communities and businesses relying on the grid.

• Towns 1, 2, and 3: These represent residential and commercial zones. Their power demand fluctuates naturally as citizens wake up, go to work, and turn on appliances during the evening peak. Power is delivered to them via local transformers (the overlapping circle symbols), which step the voltage down for safe neighborhood use.

• Large Factory: Connected directly to Substation 2, this represents a massive industrial load. When the factory shifts into production, it pulls a massive amount of power, putting sudden, heavy strain on the grid.

A good grid isn't just about making power; it is about surviving faults and managing bottlenecks. This is where the operator's strategy comes into play.

• Grid Switches (The Lines & Gaps): The diagram features multiple switches (e.g., Town 1, Town 2, Sub 2 - Town 1). These allow the operator to physically open or close circuits.

• Tie-Lines (Town 1 & 2, Town 2 & 3): These are vital parallel feeds. If a direct line to a town fails, an operator can close a tie-line to "backfeed" power from a neighboring town's circuit. Furthermore, the cross-ties (Sub 2 - Town 1, Sub 2 - Town 3) allow Substation 2 to send power across the map to rescue Substation 1's towns if the Hydro dam fails.

• Berm Batteries: Scattered strategically across the network are utility-scale battery banks. These charge up automatically when the grid has excess power (like on a sunny, windy day). When demand spikes or a generator trips, these batteries rapidly discharge their stored energy back into the network to prevent a blackout, buying the operator precious time to fire up another turbine.