Dynamic Stability Analysis

The dynamic behaviour of power systems subjected normal power impacts is influenced by the following factors:

• The system load level.
• The network characteristics.
• The Generator and its controller characteristics.
• The load characteristics.

The system is dynamically stable if the oscillatory response following a perturbation quickly settles down to a new stable operating point without sustained oscillations. These studies are typically carried out using linearized model of the system.

General Features of Dynamic Stability Analysis

• Component modelling similar to Transient Stability Studies.
• Linearized model of network algebraic equations and first order differential equations used at an operating point.
• Eigen values analysis used for the evaluation of the system stability.
• Option for time domain simulation with the linearized model and with specified perturbation.
• Transfer function approach with single machine, infinite bus models.
• Can be executed for multiple islanded systems and for multiple load flow study cases.
• Options for root locus plots, Bode plots for simple single machine infinite bus models.