DynaFlow

DynaFlow is a new steady-state simulation tool that aims at calculating the steady-state point by using a simplified time-domain simulation, guaranteeing the correctness of the solution found. You can find more information about it here.

• Installation
• Configuration
  • Specific parameters
  • Generic parameters
  • Example

Installation

You may download DynaFlow release packages from here.

Configuration

You need to tell powsybl where to find DynaFlow, by adding this into you configuration file:

dynaflow:
    homeDir: /path/to/dynaflow  # Directory obtained by unzipping the package, should contain "bin"
    debug: false

To use DynaFlow as a default for all power flow computations, you may configure the load-flow module in your configuration file:

load-flow:
    default-impl-name: "DynaFlow"

Specific parameters

svcRegulationOn
The svcRegulationOn is an optional boolean property that defines if SVCs (Static Var Compensator) take part in the voltage regulation. The default value of this parameter is false.

shuntRegulationOn
The shuntRegulationOn is an optional boolean property that defines if Shunts take part in the voltage regulation. The default value of this parameter is false.

automaticSlackBusOn
The automaticSlackbusOn is an optional boolean property that defines if DynaFlow computes the slack bus (phase reference bus) by itself or if the slack bus is provided. The default value of this parameter is true.

vscAsGenerators The vscAsGenerators is an optional boolean property that defines if VSCs (Voltage Source Converters) are modeled as generators. The default value of this parameter is true.

lccAsLoads
The lccAsLoads is an optional boolean property that defines if LCCs (Line Commutated Converters) are modeled as loads. The default value of this parameter is true.

Generic parameters

Furthermore, DynaFlow only supports two of the generic parameters:

• noGeneratorReactiveLimits
• phaseShifterRegulationOn

You may have a description of these parameters here. The other parameters are ignored.

Example

You may define those parameters in your configuration file:

dynaflow-default-parameters:
    svcRegulationOn: false
    shuntRegulationOn: false
    automaticSlackBusOn: false
    vscAsGenerators: false
    lccAsLoads: true

Alternatively, you can provide parameters as a JSON file where supported (for example when using itools loadflow command):

{
  "version" : "1.4",
  "phaseShifterRegulationOn" : false,
  "noGeneratorReactiveLimits" : false,
  "extensions" : {
    "DynaflowParameters" : {
      "svcRegulationOn": true,
      "shuntRegulationOn": false,
      "automaticSlackBusOn": true,
      "vscAsGenerators": false,
      "lccAsLoads": true
    }
  }
}