IEC Technical Committee to Discuss New Wind Farm O&M Standard

The International Electrotechnical Commission’s (IEC) Technical Committee will discuss a newly proposed global wind farm Technical Specification, IEC61400-28, at its upcoming meeting in Glasgow in April. The initiative introduces the concept of independent verification of the strategies for equipment maintenance throughout the entire life-cycle of a wind farm.

Illustration. Image source: innogy

If this latest IEC Technical Specification is approved by the IEC Committee, a key objective will be to establish independent guidance on best practices for wind farm operations, according to Lloyd’s Register (LR), which is supporting the initiative. Throughout a typical life-cycle of a wind farm, it is anticipated that qualitative and quantitative information would be collated and assessed to improve decisions on equipment performance, farm operation and maintenance.

LR’s Principal Engineer for Renewables O&M, Dr Mark Spring, who drafted the new work item for the IEC proposal, said: “This is a really important step forward for wind farm management and an opportunity for cross-industry collaboration drawing on the knowledge and experience of a broad range of stakeholders. It’s clear that increasing standardisation has already had a dramatic impact on reducing uncertainty for all wind farm stakeholders and helping to reduce the cost of electricity generated from wind. The new IEC Technical Specification will build on that.”

The aim is to provide impartial and independent assistance to all wind farm stakeholders as they weigh up decisions about retrofitting, re-powering or life extension. These insights can be gained from a thorough assessment of the condition of all operating systems in a wind farm as the plant ages, LR states.

Al Mackinnon, Chair of the British Standards Institute’s UK shadow committee, PEL-88, says: “This proposal has captured the imagination more than any other subject and in my opinion it’s the most significant initiative taken up by TC-88 in the last 10 years. It will be particularly important in the UK, where we have a number of aging wind farms for which stakeholders will already be scrutinising the options for re-powering, life extension, retrofitting or decommissioning – both onshore and offshore.

“In the Netherlands, Germany and Denmark, owners and operators of wind farms have a lot of experience of applying formal methods to assess the condition of their assets with a view to life extension but there is a lot of variability in the details of the guidance from commercial consultancies or required by regulatory authorities, banks or insurers.”

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