What is it about?
In order to improve the computational efficiency of electromagnetic transient simulation in power system, as well as avoiding the numerical oscillation, the high order Radau method and V-transformation is proposed for electromagnetic transient simulation.
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Why is it important?
Because the Radau IIA method is both L-stable and non-linear B-stable, the numerical oscillation can be avoided effectively without any extra detection for sudden changes of variables, which is quite different from traditional numerical integration algorithm. Taking advantage of the important V-transformation feature of high order Radau IIA method, the discrete high-dimension algebraic equation used for solving differential equation can be decoupled into blocks, thus the multi-stage block recursive method can be formed. In this way, we can adopt larger integration step of high order Radau IIA method to acquire faster computational speed in EMT simulations.
Perspectives
The high-order Radau method is a kind of new method that is suitable for electromagnetic transient simulation in power system, and it can effectively avoid the numerical oscillation. Since the V-transformation feature of high-order Radau IIA method, the multi-stage block recursive method can be formed, and the high computational efficiency can be achieved in electromagnetic transient simulation.
Meng Yang
China Three Gorges University
Read the Original
This page is a summary of: Fast electromagnetic transient simulation for over-voltages of transmission line by high order Radau method and V-transformation , IET Generation Transmission & Distribution, November 2016, the Institution of Engineering and Technology (the IET),
DOI: 10.1049/iet-gtd.2016.0476.
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