Holiday

About 2 days after the installation was completed, my wife and I left for two weeks of well-earned holiday. We had hoped that all would be completed before we went, but we had to leave the machine stationery. Mechanically and electrically everything is in place, but there remains an issue around the interface between the turbine and the grid. Before the turbine can be signed off, the DNO have to perform what is called the G59 witness test. What this means is that if there is a problem on the grid and there is a mains power failure, the turbine has to sense this and also shut down. The reason is obvious of course; if the grid fails, the DNO engineer puts his hand on a cable which he expects to be dead, only there is a wind turbine a few miles down the road still generating power. So the G59 test is to confirm to the DNO’s satisfaction that the turbine will stop under a series of simulated grid failure scenarios.

We are back from holiday, and are now pushing to get this final issue resolved.