Reference case: Certification Services for two Onshore Wind Farm Projects - Germany

The juwi Group is one of the leading project developers in Europe in the wind, sun and biomass energy sector. The company cooperates with a number of associations and institutions to advance energy efficiency and researches the potential of alternative forms of energy. juwi Wind GmbH is the subsidiary responsible for the wind business of the juwi Group. Since the adoption of the German Ordinance on System Services by Wind Energy Plants in 2009, it is mandatory that wind turbines and wind farms connected to the German medium or high voltage systems fulfill the demanding requirements of the corresponding grid codes. An independent third-party is required by law to verify compliance and provide certification.

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.

The main focus of this project was the verification of the fulfillment of German grid code requirements as they apply to wind power plants connected to the high voltage transmission network. The evaluation and testing procedures for the verification of the grid code requirements were based on the technical guidelines of the FGW (TR8), which were in fact developed with the assistance and contribution of FGH.

Assessment of the wind farm’s characteristics principally involved load flow analysis by computer simulations and dynamic stability analyses. The active power reduction including power management, reactive power capability and dynamic plant behavior during system faults were also checked, and all requirements were fulfilled. In addition, the implementation and settings of protection devices and the system perturbations were approved.

A certificate in accordance with EN 45 011 / IEC 17011 was issued by FGH for the Kirchberg I and II wind farms in 2011.

Read more about our Solutions to Wind Farm Certification

juwi Wind GmbH was supported by FGH with:

•Comprehensive third-party assessment and certification of the wind farm’s electrical characteristics, including evaluation, analysis, and reporting.

•Extensive expertise in the grid integration of renewable energy systems and reliable certification services as an impartial witness.

•Successfully obtaining government subsidies for renewable energy systems, thanks to the verified fulfillment of the grid code requirements of Germany’s Renewable Energy Law (EEG).