Working with large generating plants is where our strengths lie!

DC source 3 MVA, 1000 V and programmable loads: R 600 kW, L 600 kvar, C 600 kvar

LVRT Test Container 6 MVA and grid simulator 1.0 MVA, 100-900 V

Low voltage test bus bar and tap transformer 1.25 MVA, 254 to 690 V

Testing Grid Characteristics

Fraunhofer IEE core competencies include the measurement and modeling of generation units. This enables us to offer you a comprehensive service in verifying grid compliance requirements for inverters and CHP units.

We perform measurements up to 1 MW of rated power AC and 3 MW DC. The
verification of the behavior during voltage dips (LVRT) is possible up to 6 MVA. We are also able to develop validated models of generating units for simulation purposes.

Grid Characteristics of Photovoltaic Inverters

Fraunhofer IEE offers compliance verification measurements for the grid connection requirements of inverters with 1 MW of rated power AC and up to 3 MW DC.

In addition, a mobile grid decoupling unit up to 6 MVA is available for the verification of the behavior during voltage dips (LVRT).

Our staff has experience in certification measurements according to national and international requirements and is actively involved in the committees responsible for developing these testing standards and guidelines.

 

On-Site Measurements

With the LVRT testing container, on-site measurements of fully installed systems are also possible.

Our Test Environment

  • Step transformer 1.25 MVA, 254 to 690 V
  • AC grid simulator 1.0 MVA, 100-900 V, 45-65 Hz
  • DC source 3.0 MVA (3000A @1000V)
  • Programmable RLC loads (600 kW / 600 kvar ind. / 600 kvar cap.)
  • 6 MVA mobile, medium voltage decoupling unit (LVRT Test Container)
  • Test signal generator for testing secondary equipment

Grid Interface Characteristics of CHP

Fraunhofer IEE offers measurements for compliance verification with grid connection requirements for CHP units up to 1 MVA electrical and 2.5 MW thermal connected power. In addition, a mobile grid decoupling unit up to 6 MVA is available for the verification of the behavior during voltage dips (LVRT). Our staff is involved in the development of test guidelines, an example of which is the German FGW “combustion engines” working group. The LVRT test container enables us to conduct on-site measurements in your own test environment or on fully installed systems.

Grid Interface Characteristics of CHP

Model Development and Grid Connection Studies

© Fraunhofer IEE

Fraunhofer IEE can create a validated model for simulation and is able to support you in the certification process. The modeling can be carried out in different simulation environments. We provide measurement and modeling from a single source allowing prompt use of data for modeling and validation, thereby saving time and guaranteeing safety in the certification process.