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Certification and Power Quality Assessment of Wind Turbine

When ENERCON required independent certification of its most powerful onshore wind turbine, the largest worldwide, an extensive assessment was essential to ensure the fulfillment of German grid code requirements. That is why FGH, a cooperation partner of TÜV Rheinland, was the right choice for this project, thanks to its expertise in grid code compliance proofing.

Basic Facts
Client: ENERCON GmbH
Project Location: Mannheim, Germany
Main services:- Verify fulfillment of German grid code requirements
- Field measurements and detailed model validation
- Certification of the wind turbine - L0
Involved regulations/standards:- System Service Ordinance by Wind Energy Plants (SDLWindV)
- TransmissionCode 2007
- BDEW Medium Voltage Directive
- FGW Technical Guidelines 3, 4 and 8

Initial situation and requirements

ENERCON has been setting new standards in technological design for more than 25 years. With more than 18,000 wind turbines installed in over 30 countries, the company is also recognized internationally as one of the leading manufacturers of wind turbines and their components. With the adoption of the German System Service Ordinance by Wind Energy Plants in 2009 it became mandatory that wind turbines and wind farms connected to the German medium or high voltage system have to fulfill the advanced requirements of the corresponding grid codes. For the certification of whole wind farms, the wind turbines deployed must also be type tested.

About FGH and about TÜV Rheinland

About FGH:

Following a ninety-year tradition as the leading research association of Germany‘s electric power utilities and industry, FGH provides a full range of services for the integration of dispersed power generation units into the power grids. The FGH Certification Office, accredited for grid code compliance proofing, provides unit as well as project certificates for national and international grid codes.

An experienced partner like FGH enables TÜV Rheinland to offer clients a full-service one-stop shop solution for all wind energy projects.

About TÜV Rheinland:

Founded 140 years ago, TÜV Rheinland is a global leader in independent inspection services, ensuring quality and safety for people, the environment, and technology in nearly all aspects of life.

We inspect technical equipment , products and services, oversee projects and help to shape processes for companies around the world. Since 2006 we have been a member of the United Nations Global Compact to promote sustainability and combat corruption.

For the wind energy sector we provide a comprehensive service portfolio, covering every aspect of wind energy projects – from site selection, design and manufacturing support to dismantling plants .

Solutions, results

FGH has supported ENERCON with extensive certification services since 2004, including the new ENERCON E-126 wind turbine. This comprised field measurements followed by a detailed model validation, where the simulation results were compared with field measurements.

In addition, it was necessary to verify fulfillment of German grid code requirements that apply to wind turbines connected at medium and high voltage levels. An assessment of the wind turbine’s characteristics, including calculation and testing procedures for the verification of the grid code requirements, was based on FGW technical guidelines (TR3, TR4 and TR8).

FGH ensured that power generation, power control and the reactive power capability fulfilled the grid code requirements. Furthermore, FGH verified the dynamic plant behavior during system faults and validated the wind turbine model.

Read more about our Solutions to Wind Farm Certification - L0

Did you know?

Certified with a rated power output of 6 MW, the ENERCON E-126 is the world‘s
largest-capacity onshore wind turbine that has been commercially available since
its introduction in 2007.

Benefits for the client

FGH supported ENERCON with:

  • Comprehensive third-party certification to EN 45 011 / IEC 17011 of the wind turbine’s electrical characteristics and behavior.
  • Verification that the German grid code requirements were fulfilled.
  • Checking the connection to the German power system was in compliance with the current standards.