In terms of Grid connection compliance, the power plant owner together with the construction company are responsible to ensure the conformity of the power plant with the grid code requirements before its connection to the electrical network.
Ynni Consulting provides analytic grid connection compliance studies by numerical simulations, considering the requirements of the Grid code and local & international standards.
Depending on the type of power plants (Wind, Solar, Thermal, …), the studies to be conducted to demonstrate the conformity with grid requirements can be
(P, Q, U) capability curves
LFRT “Line-fault ride-through” analysis
Steady state analysis
Small signal stability study
Transient stability study
Insulation coordination studies
Harmonic studies
Regulation modeling and validation
The grid compliance studies are to be completed by simulations, and then to be validated during commissioning tests. If non-compliance becomes apparent, then we can advise design modifications or recommend some actions to resolve the issue, including supporting discussions with the Grid operator.
TOOLS
Different tools can be used according to the subject to be studied and customer requirements.
For steady state and dynamic studies
DigSilent Power Factory
ETAP
CYME Int’l
For transient insulation coordination studies
PSCAD
EMTP-RV
ATP – EMTP