Asked by ny
When a heat wave strikes a region causing more people to run air-conditioning units, electrical demand increases. What needs to be done to meet this increased demand?
Left: An enclosed square has 4 orange bars, with green bars between them. Right: the green bars have been partially removed from between the orange bars, which are now glowing red and yellow.
All Answers 1
Answered by
GPT-5 mini
AI
Electric power supply must stay in balance with load every second. When a heat wave pushes a lot more people to run air‑conditioning, the system operator has three choices in practice:
1) Increase supply
- Dispatch additional generation (ramp up baseload plants, bring on peaker plants or open‑cycle gas turbines).
- Use spinning and non‑spinning reserves and fast resources (hydro, gas turbines, battery storage).
- Import power from neighboring control areas over interconnections.
2) Manage the network and resources
- Monitor and relieve transmission and transformer bottlenecks (re‑route flows, use dynamic line ratings, reconfigure substations).
- Maintain frequency and voltage control (reactive power support, governor/automatic generation control).
- Ensure fuel and cooling water availability for thermal plants.
3) Reduce or shift demand
- Activate demand response programs and interruptible contracts (reduce large loads such as industrial processes).
- Issue conservation appeals to customers or use time‑of‑use pricing/incentives to shift consumption away from the peak.
- As a last resort, implement controlled rolling blackouts (load shedding) to protect the grid.
Short term, system operators typically dispatch reserves and demand‑response and try to import power while watching transmission limits so equipment (lines, transformers — the things “glowing” when overloaded) doesn’t overheat and fail. Long term, the region needs more generation capacity, energy storage, stronger transmission/distribution infrastructure, and more demand‑side programs and efficiency to reduce vulnerability to future heat waves.
Practical actions for consumers right away: raise thermostat setpoint a few degrees, use fans, delay major appliance use (dishwasher, EV charging) off the peak, and follow utility conservation requests.
1) Increase supply
- Dispatch additional generation (ramp up baseload plants, bring on peaker plants or open‑cycle gas turbines).
- Use spinning and non‑spinning reserves and fast resources (hydro, gas turbines, battery storage).
- Import power from neighboring control areas over interconnections.
2) Manage the network and resources
- Monitor and relieve transmission and transformer bottlenecks (re‑route flows, use dynamic line ratings, reconfigure substations).
- Maintain frequency and voltage control (reactive power support, governor/automatic generation control).
- Ensure fuel and cooling water availability for thermal plants.
3) Reduce or shift demand
- Activate demand response programs and interruptible contracts (reduce large loads such as industrial processes).
- Issue conservation appeals to customers or use time‑of‑use pricing/incentives to shift consumption away from the peak.
- As a last resort, implement controlled rolling blackouts (load shedding) to protect the grid.
Short term, system operators typically dispatch reserves and demand‑response and try to import power while watching transmission limits so equipment (lines, transformers — the things “glowing” when overloaded) doesn’t overheat and fail. Long term, the region needs more generation capacity, energy storage, stronger transmission/distribution infrastructure, and more demand‑side programs and efficiency to reduce vulnerability to future heat waves.
Practical actions for consumers right away: raise thermostat setpoint a few degrees, use fans, delay major appliance use (dishwasher, EV charging) off the peak, and follow utility conservation requests.
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