Renewable energy generation is spreading worldwide at increasing rate. With more and more wind and PV generation farms, we see a corresponding increase in wind and PV generation transformer failures.
These transformers are considered distribution transformers because of their rating (up to 3400kVA) and voltage (up to 33kV). However, the service conditions for wind and PV generation transformers are considerably more severe than those of distribution transformers in terms of:
In addition, wind and PV generation transformers must be much more reliable than distribution transformers because of lack of redundancy and the financial consequences of a failure.
Unfortunately, many transformer manufacturers build wind and PV generation transformers like distribution transformers. This regularly results in abnormal gassing (several thousands of ppm of hydrogen in oil is not rare at all) and in failures.
Our transformer consultants deal with wind and PV generation transformer diagnostics and failures on a regular basis around the world. We have experience not only in diagnosing problems in these units but also in what to change in the design and manufacturing process in order to solve the problems we have observed.
Our transformer consultants provide the following services: