DIGSILENT POWERFACTORY TUTORIAL PDF

DIgSILENT PowerFactory Application Guide Dynamic Modelling Tutorial DIgSILENT Technical Documentation DIgSILENT GmbH Heinrich-Hertz-Str. 9 PowerFactory is easy to use and fully Windows compatible and can be integrated DIgSILENT YouTube channel; Interactive introductory tutorial and various. PowerFactory is a leading integrated power system analysis software, which covers the full range of functionality from standard features to highly sophisticated .

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The input g, however, is unknown and needs to be initialised manually. Automatic calculation of initial conditions option in block definition The feature is located in the block definition dialog see Figure 4. Consider the powerffactory generation system shown in Figure 2. Construct a composite frame showing how the slots are interconnected 3.

Returns the internal logical state: A composite frame contains the definitions of each slot, indicating the type of object that should be assigned to the slot. Step response of first-order lag differentiator 4. An example of a composite frame for a synchronous generator Figure 3. We still have to define the individual dynamic models for the governor, turbine and voltage controller.

Refer to Chapters The user must define what type of object the slot represents. There are three iterative search algorithms available in PowerFactory: This can be summarised by a block diagram as shown Figure 2. A composite model references a composite frame and inherits its structure i.

For example, Figure 5. The output pt is therefore known and we need to manually initialise the input g. Firstly, the equation for pw must be rearranged so that it is evaluated in terms of vw: Block definitions can be built from both equations and graphical block diagrams. This can be done using the inc0 statement, which allows us to initialise a disconnected signal.

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Multiple transformer elements can use the same type, and changing the type parameters will affect all of the transformers that inherit or reference this type. Generator Control System The built-in synchronous machine model ElmSym is shipped by default without any tutodial. We can first create a composite model and poweffactory it to the composite frame we defined earlier see Figure 2.

Built-in grid elements such as synchronous generators can be digsiletn by powerfavtory drawing tools in the PowerFactory GUI. Wind Turbine Block Let us revisit the wind turbine example in Section 4. StationWare is based on. Both diagrams depict two generators network elements 1 and 2each connected to a voltage controller common models 1 and digsillent. Tdelay in seconds and larger than 0.

In this case, we can initialise one of the variables x1 or powerfavtory with incfix to a fixed value, and put an arbitrary starting estimate for the other variable, i. The external event must be stored locally in the DSL model. Step response of integrator 4. DIgSILENT is staffed with experts of various disciplines relevant for performing consulting services, research activities, and user training. PowerFactory does not check the initial conditions for a macro since they are assumed to be defined elsewhere i.

In the end, the complete composite model is shown in Figure 2. Some dummy initialisation values i. The input signal is a clock signal with the time period Tclock. Hydro tktorial common model and parameters Figure 5.

Suppose that the frame represents the connections of a generator Slot A to a voltage controller Slot B.

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Power System Software & Engineering

It is recom- mended that the steady-state load flow poweffactory configured correctly before running a time-domain simulation. A voltage controller is also connected to the generator, controlling the terminal voltage of the machine by regulating rotor excitation. The general rule is that in the steady state, all derivates are zero, i.

Create a composite model and fill the slots with the relevant grid elements, e. Model definition for a simple voltage controller for the governor, turbine and voltage controller, the built-in model for the generator and how they are all connected together the composite frame. The state variable for the integrator block also needs to be initialised, and digssilent will have the steady state value U.

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The difference is that composite frames can only contain slots and con- nectors, whereas model definitions can contain blocks, summation points, multipliers, etc but not slots. This becomes an issue when exporting the model and importing it to different PowerFactory databases.

The step response of the integrator block is shown in Figure 4. The state variable x should therefore be initialised to zero. Create each of the model definitions and set appropriate initial conditions see Section 4 4.

From this steady-state representation, we can work backwards from the known output pt and calculate an initial value for the input g: The turbine is coupled to a synchronous generator, which is then connected to the network.