Electrical Power Systems - Generation Flashcards

Flashcards covering the principles of AC voltage generation, generator components, power plant types, and hydroelectric system specifics based on the lecture material.

According to __________, a changing magnetic field produces a voltage (EMF).

Faraday’s Law of Electromagnetic Induction

__________ states that a current flowing through a conductor creates a magnetic field.

Ampere’s Law

In a single-phase AC generator, changing the magnets' speed changes the __________ of the sine wave.

frequency

To increase the resulting output voltage in a coil, one must increase the __________ of conductor or wire in the coil.

number of turns (loops)

Three-phase AC voltage is produced when three coils are spaced __________ degrees apart in a $360$ degree circle.

$$120$$

The three basic components of large and small generators connected to the power system are the __________, __________, and __________.

stator, rotor, and exciter

In a three-phase AC generator, the __________ contains three single-phase windings physically spaced $120^\text{o}$ apart.

stator

The __________ is the rotating center component of a generator that moves the magnetic field across the stator windings.

rotor

While rotors can be permanent magnets, an __________ is more common in large power plants because it allows the magnetic field strength to be varied.

electromagnet

The __________ is the voltage source for the rotor field coil.

exciter

Stationary exciter sources are connected to the rotating rotor coil via __________.

slip rings

When a load is added to a generator, the rotor speed tends to __________ due to magnetic interaction.

decrease

The __________ is a mechanical device that turns the generator’s rotor by converting an energy source into mechanical motion.

prime mover

Hydroelectric power plants are categorized into three main types: Run-of-River, __________, and Tidal.

Dam-Type

Because it has no water storage, a Run-of-River hydroelectric power plant is also referred to as a __________ plant.

depolamasız (non-storage)

Dams are structures built to store water and are typically higher than __________ meters.

$$15$$

A __________ reduces pressure fluctuations in the pipeline and protects the system from water hammer.

surge tank

The __________ is a large pipe that carries high-pressure water from the dam to the turbine.

penstock

A __________ type turbine is characterized by high head and low flow (debi).

Pelton

A __________ type turbine is characterized by medium head and medium flow (debi).

Francis

A __________ type turbine is characterized by low head and high flow (debi).

Kaplan

The hydroelectric production potential in the world is significant; developing even half of it would reduce greenhouse gas emissions by __________%.

$$13$$

The height from the foundation (Temelden Yüksekliği) of the Yusufeli Hydroelectric Power Plant is __________ meters.

$$275$$

The annual energy production of the Yusufeli Hydroelectric Power Plant is __________ GWh/yıl.

$$1888$$

In Example 4, a pump provides a water discharge of $Q = 17.1$ __________.

$$\text{liters/second}$$