Chapter 31
Transient Stability and System Controls
The Swing Equation
The Swing Equation is crucial for understanding the dynamics of generating units, such as a three-phase synchronous generator.
It describes rotor motion ...
Simplified Synchronous Machine Model
The Synchronous Machine Model is crucial in transient stability studies.
It represents a synchronous machine with a constant internal voltage behind its ...
Multimachine Stability
In an N-bus power system with M synchronous machines, loads are modeled as constant admittances, and network nodal equations are formulated.
The ...
Wind Turbine Machine Models
There are four types of wind turbines. Types 1 and 2 are induction machine models, where stator windings induce AC rotor currents via relative motion ...
Generator Voltage Control
In synchronous generators, the exciter delivers DC power to the rotor's field winding.
Older models use a rotor-driven DC generator as the exciter, ...
Turbine-Governor Control
Turbine-generator units in power systems store kinetic energy due to their rotation, which is released when the load increases.
The electrical torque of ...
Load-frequency control
In sudden power surges, load-frequency control stabilizes the grid. LFC's goals are to nullify steady-state frequency error after load changes and ...
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