What term is used to describe the ability of a power system to return to steady state after a disturbance?

Power system stability

Which type of stability refers to a system's ability to return to steady state after small disturbances?

Steady state stability

True or False: Transient stability involves small disturbances and uses linearized equations for analysis.

False. Transient stability deals with large disturbances and requires nonlinear equations.

Riddle: I am the stability type that handles large disturbances and can be measured in a matter of seconds. What am I?

Transient stability

The maximum power permissible without loss of steady state stability is referred to as ______.

Steady state stability limit

Which equation relates angular momentum, moment of inertia, and angular velocity in a power system?

Swing equation

What is the inertia constant (H) defined as in terms of stored energy?

Stored energy in megajoule = G × H

MCQ: What is the primary purpose of the Equal Area Criterion? A) To solve linear equations B) To determine stability without solving swing equations C) To calculate power losses D) To measure voltage levels

B) To determine stability without solving swing equations

Fill-in-the-blanks: The ability of a system to sustain small disturbances lasting about 10 to 30 seconds is known as ______.

Dynamic stability

True or False: Dynamic stability is concerned with large disturbances lasting several minutes.

False. Dynamic stability is concerned with small disturbances lasting about 10 to 30 seconds.

What happens to a synchronous generator's load angle during a sudden load increase?

The load angle increases.

MCQ: When a generator is supplying power to an infinite bus over two parallel transmission lines, what happens if one line opens? A) Increase in maximum power transfer B) Decrease in equivalent reactance C) Loss of synchronism D) No effect on stability

C) Loss of synchronism

Riddle: I help analyze the relationship between accelerating power and kinetic energy changes in power systems. What method am I known for?

Equal Area Criterion

The critical clearing angle is expressed in ______.

Radians

What is the maximum power permissible through a system without loss of steady state stability called?

Steady state stability limit