### Do you have an example of an intermittent phase-to-ground fault on a cable?

You will need to perform an EMT-type simulation for this purpose. To replicate the fault on the cable insulation, the cable must be explictly divided in two sections at the point where the faulty…
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### Do you have an EMT model for a surge arrester?

The surge arrester model consists of a non-linear resistance that can be entered point by point.  The surge arrester is connected to Bus B and the element input characteristic is governed by…
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### How can I implement a load with constant power demand for varying voltage in the simulation?

For RMS simulations the load type has to be set to 100% dynamic load, this means constant impedance Z. Additionally in the RMS dialogue of the load type the voltage dependency of P and Q can be set.…
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### Do you have an example for an EMT simulation using stochastic switching?

The attached example demonstrates the use of stochastic switching in PowerFactory, including a description on how to use it. The study case contains a DPL script "Stochastic Switching" which…
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### How can I model a lightning current source in PowerFactory EMT simulation?

A lightning event can be modelled in PowerFactory in two ways: using the built-in impulse source element (ElmImpulse) - recommended approach. using a detailed, user defined DSL model. The first method…
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### How can I assign a voltage dip of pre-defined characteristic to a busbar in my system?

Refer to the ]attached example for a measured voltage at a bus bar. The inputs of the voltage source are named U_A, U_B, U_C, as you can see in the composite model. These inputs represent the…
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### I want to model the residual voltage for capacitor switching. Can you help me?

To model the initial conditions (voltage) of a capacitor bank, you should use a "parameter event" (SetParam) on the variables "uC_a", "uC_b", "uC_c" (signals of the "ElmShnt"). Please find attached an…
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### How can I define harmonic background voltages in EMT simulations?

To define harmonic background voltages you have to link a voltage source with a DSL model or a fourier source. Refer to the example in the attached file.…
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### Do you have an example in EMT simulation of harmonic currents injection?

In the attached PowerFactory project, a current source is configured to inject fundamental frequency and harmonic currents into the system. The simple network model contains a current source which is…
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### Would you have an example for a wind turbine driving asynchronous machine?

Refer to the attached example. It describes an induction generator with the necessary dynamic models. The reactive power is balanced using a switched capacitor. The dynamic models are a shaft model…
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