Questions and Answers
What is the unit of measure of electric power?
What is the ratio between the power plant's average production compared to its rated capability?
What is the constant part of the total load on an electrical power supply system?
What type of power plant is devoted to the production of baseload supply to meet electrical demand?
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What represents the overall efficiency of a powerplant?
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Study Notes
Electric Power Terminology
- Watt (W) is the basic unit of electric power measurement.
- Watt-hours (Wh) represent the total energy consumed over a period of time.
- One kilowatt (kW) is equal to 1,000 watts.
- One kilowatt-hour (kWh) is the energy consumed by a 1 kW device in one hour.
Electric Load and Capacity
- Demand is the electric power required by an appliance or equipment to operate within its rating.
- Capacity is the maximum electric power that a generator can deliver to meet demand.
- Peak Load is the maximum instantaneous load over a designated time interval.
- Base Load is the constant part of the total load on an electrical power supply system.
- Intermediate Load is the range between base load and peak load.
Power Plant Performance
- Capacity Factor is the ratio of a power plant's average production to its rated capability.
- Load Factor is the measure of a power plant's output compared to its maximum output.
- Installed Capacity is the maximum power output a generator can produce at any given time.
- Dependent Capacity is the capacity that can be relied upon to carry system load, provide reserve, and meet firm power obligations.
Power Plant Types
- Baseload Power Plant: produces baseload supply to meet electrical demand.
- Peaking Power Plant: operates during peak demand for electricity.
Power Plant Efficiency
- Heat Rate is the amount of energy required by fuel to produce a unit of electrical energy, representing overall power plant efficiency.
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Description
Learn key concepts in electric power measurement, including watts, kilowatts, and kilowatt-hours, as well as electric load and capacity fundamentals.
