A State-Space Based Analysis of Synchronous Condenser Inter-parametric Variations in Wind Integrated Weak Power Grid

In this work, effect of synchronous condenser and its parameters on the stability and oscillation characteristics of wind integrated weak grid systems is investigated. For this analysis, a weak grid model is used that combines a Type 4 wind turbine generator model with a power grid model. The grid is modeled as lumped group of a thermal power station (e.g., exciter system and steam governor) with a variable impedance network. A linearized state-space model is developed to analyze the impact of the synchronous condenser parameters like exciter gain, transient reactance, and inertial constant in detail. The study can be used as a guideline for optimal selection of SC parameters for a given grid condition. The results are then validated using a weak grid model developed in MATLAB Simulink and PSCAD (electromagnetic transient simulation platform).