DIgSILENT

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How is the external grid modelled for RMS simulation?

It is modelled as a voltage source with an internal impedance. The mechanical equations are equivalent as those for the synchronous machine. The Acceleration Time Constant (in s) represents the…

Do you have an example for changing a parameter of a DSL model using DPL?

The attached project contains a small DPL example, where a parameter of a DSL model is changed using a DPL script. The DPL script is located inside the Scripts library. The name of the DSL model and…

Do you have an example for FACTS, e.g. a TCSC model (Thyristor Controlled Series Capacitor)?

Attached is an example (ExampleTCSC.pfd) of a Thyristor Controlled Series Capacitor (TCSC) including a control for power oscillation damping (POD) to be used with RMS simulations.…

What options are available to implement a measurement in a dynamic simulation?

The options available are the following: Voltage  Measurement Device and Current Measurement Device (StaVmea and StaImea). These elements implement the measurement of time-dependent data of a…

Do you have an example for modelling a SVS/SVC (Static var system/compensator)?

The attached files illustrate two model implementations (SVCExampleWithoutSVSInterface.pfd and SVCExampleWithInterface.pfd): individual control or synchronized control of parallel SVS devices: 1.…

Do you have an example for a wind turbine driving an asynchronous machine?

In the attached example (FixedSpeedWTG.pfd) an induction generator with the necessary dynamic models is shown. The reactive power is balanced using a switched capacitor. The dynamic models are a shaft…

How can I visualise the Cp-Lambda-Curve of a wind turbine?

The attached example (WindCpLambda.pfd) visualises the aerodynamic efficiency cp of the wind turbine, which can be found in the DFIG (doubly fed induction generator) template. Here the cp-lambda…

How can I encrypt DSL models to protect these models against unauthorised access?

The encrypt module can be applied using the Pack -> Macro button followed by the Encrypt button in the block definition basic data page. The Pack -> Macro option copies all equations to the…
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Is it possible to exchange signals between two composite models?

Yes, it is possible to exchange variables between two composite models in the same way as it is done between two common models. It is only necessary to set up a frame in which the two frames are…

Do you have an example about the event DSL function?

In the attached example a counter is implemented in DSL using the event function. This function creates in this case a parameter event over the same DSL model every time the input signal changes sign…
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