International Journal of Emerging Electric Power Systems
Editor-in-Chief: Sidhu, Tarlochan
Ed. by Khaparde, S A / Rosolowski, Eugeniusz / Saha, Tapan K / Gao, Fei
CiteScore 2018: 0.86
SCImago Journal Rank (SJR) 2018: 0.220
Source Normalized Impact per Paper (SNIP) 2018: 0.430
Modeling Shaft Damping of Turbine-Generator in Electromagnetic Transient Simulation
To study the torsional oscillation phenomena of turbine-generators, a fundamental approach is by electromagnetic transient simulation. In this paper, the structure of the damping coefficient matrix of the shaft torsional model for turbine-generators is studied, and a method to determine the values of the elements of the damping coefficient matrix is developed. Through the analysis of different damping components, the most concerned damping component is identified. Based on the complex modal analysis method widely used in the mechanical vibration engineering, the relationship between the damping coefficient matrix and the torsional mode damping is established, furthermore, an iterative method to compute the damping coefficient matrix is developed. A test study on the turbine-generator shaft torsional model of the IEEE first SSR benchmark system indicates that the proposed torsional damping modeling technique in electromagnetic transient simulation is valid and effective.