Initialization of EMT Generalized SSN Components #462
Description
Is your feature request related to a problem? Please describe.
#406 added EMT generalized SSN components, i. e. components that can be parametrized by state-space A, B, C, D matrices and solved by MNA Solver. But now the initialization of these components is not yet implemented.
Describe the solution you'd like
The initialization procedure is described in section II. D of the the paper.
When it comes to implementation in DPsim, I'd propose the following:
- Add SP domain generic SSN component, that could be used in PF Solver. The component would model an admittance calculated according to the equation (19) in the paper.
- Implement initialization in EMT domain generic SSN components. We can use the equation (9) in the paper to initialize the state vector.
Additional context
- I am not yet sure if in Step 1 we need to consider I-Type and V-type SSN components separately.
- Usually the components in DPsim are initialized from the known voltage and current at the terminals. To use the equation (9) for generic SSN we also need to know the previous state. I assume that the phasor value of the state can be calculated in SP component and then need to be made available within EMT component for initialization.