Low Voltage GridLab/District Unit/Demonstration Tool

From GridLab
Jump to: navigation, search

Contents

This article explains the demonstrator of the GridLab three-phase-units used in the projects Inverter2Grid and DG2 Automation. This demonstrator is a tool which auotmates and facilitates the usage of the installation to be able to perform tests within the Gridlab. The demonstrator simulates producers and loads with the given equipements and provides all tools needed to evaluate the different control methods and algorithms within those simulation.

Requirements

Hardware

The usage of the demonstrator requires a complete three-phase unit of the GridLab LV. The following list shows which elements have to be present:

Software

The used PC has to have some tools and drivers installed.

Location of the demonstrator software

The full demonstrator project may be found on the SVN repository of the Gridlab under /implementation/labview/three_phase_unit/gridlab_demonstrator

Developement Log

Version 1.6 / 24.06.2014 / SVN-Revision 141

Structural changes

  • The simeas power meters communicate now over an Ethernet-to-RS485 gateway over the network.

Other

  • The demonstrator was adapted to the changed hardware libraries.

Version 1.5 / 06.02.2014 / SVN-Revision 141

Structural changes

  • The drives are now numbered 3, 2, 1 to be coherent with the other definitions.
  • The execution sequence of the demonstrator was changed from Read-Write-Control to Read-Control-Write which is the correct sequence.

Added features

  • A debug output was added to the algorithm. The value shall be written in output_vect(11) and will be displayed in a graph and a value display in the monitoring section of the scenario I part of the software.
  • Both times in the scenario I tool (control timestep and profile timestep) may now be controlled over the UI.

Bugfixes

  • The power values given to the control algorithm where inverted, which is now corrected.

Version 1.4 / 18.12.2013 / SVN-Revision 113

Structural changes

  • The Measure and the Setup window are now integrated in one window named Setup and Monitoring. This facilitates the error search and other tasks with the ABB ACS800-11 drives since the setup parameter and the measured values are now visible at the same time.
  • The regulation algorithm was moved into the I/O loop to establish a synchronisation between the I/O operation and the regulation loop.

Added features

  • The measure section and the simulator section contains now three more graphs showing the developing of the control values.
  • The transformer measurement is now shown in detail. That means that the value of each phase is shown in addition to the general line value instead of only showing the line value. This addition was made for all measured values of the power meter.
  • The power factor of the transformer measure point is now read from the Siemens Simeas P power meter instead of calculated.
  • All inputs of the simulator section are now disabled while the simulator is running.

Bugfixes

  • Some sign problems of the measurement of the reacitve power and the power factor are resolved. The signs are now correct.
  • The measurement graph of the active power in the measure section took the reactive power values instead of the active power values as input. This issue is fixed now.
  • The x-axis of the simulation section is now named "Simulation steps [s]" which is more accurate.
  • Every plot showed a false 0 at the beginning because of a delay in the measure loop. This issue is now fixed.
  • Other minor bugfixes.

Version 1.3

The regulation algorithm and a simple PID regulator where added to regulate the grid voltage during the injection with the drives.

Version 1.2

Ideal photovoltaic characteristics simulation. Profiles may no be configured and used as control values for the power of the drives.

Version 1.1

First issue of a demonstrator with a section to regulate P and Q with a really simple algorithm.

Version 1.0

First issue with only simple stuff, such as Measure, Setup and State sections. This version served rather to try the different components of the demonstrator environment.

Support

The demonstrator is developped and maintained by Dominic Furrer. If there are any bug reports, question or other remarks feel free to contact Dominic Furrer.

Personal tools
Namespaces
Variants
Actions
Navigation
Browse
Toolbox