Frequently Asked Questions - Wind Turbines
What happens if there is no wind?
On days or nights when there is no wind to generate power, you will draw electricity from the national grid in the same way as everyone else. This of course is more than offset since you will be generating excess energy most of the time and selling this back to the grid.
What if there are excessively high winds?
It is a prerequisite that wind turbines run safely in all weathers and particularly in high winds. The Xzeres 10kW Wind Turbine has excellent multiple protection systems, the most important two of these are called Dynamic Breaking and stalled regulation.
When wind speed increases the force on the blades is increased, which causes those blades to pitch passively due to rotational forces and the force of the wind on the blades. This kicks in from wind speeds of about 10m/s onwards and enables the turbine to continue generating without over- speeding or generating more energy than the system can cope with.
Whatever the speed of the wind, if more energy is produced than the inverter can handle, the electronics are protected by automatic diversion to a dump-load resistor. The direct drive Xzeres wind turbine comes with a software management system that will automatically shut down and re start the turbine during and after periods of turbulent weather.
The 10kW is a Class II turbine sturdily built with a structural survival wind speed rating of 50m/s (112 mph). Since Hurricane force is only 32m/s, this is more than enough to cope with even the most severe conditions.
How noisy are wind turbines?
Xzeres wind turbines are designed to operate at relatively low rotation speed (Rated 120RPM) This coupled with noise-controlling blade aerodynamics enables the units to be operate with minimal noise in average wind conditions.
The 10kW wind turbine features noise-controlling blade aerodynamics and operate at a relatively low rotation speed (rated 120RPM). This allows the turbines to operate with minimal noise in normal wind conditions.
Comprehensive noise reports are available upon request. We recommend that minimum separation distances between turbine and neighbouring property is between 150 – 200m.
What if there is a power cut?
Grid system regulations state that in the event of a power cut the turbine must stop generating to ensure the safety of workmen repairing the grid or an electrician working in your house. The 10kW turbine system is automatically tied to the grid, so fulfils this requirement. Backup-power solutions are available on request.
Which is best, a 3 phase or single supply?
In the UK, G-83 and G59 are the electrical regulations which apply. Your Xzeres wind turbine system is fully compliant with these regulations.
You can connect the 10kw turbine to a single phase line, but permission is required from the local DNO. Homeco Energy will manage this process for you. Sometime you may need a G59 replay which provides a higher protection level for the grid and ensures your turbine disconnects if there is a power failure. The extra works will cost about £1500 which is a less expensive than installing a new three phase supply. The more common practise is to use a G59/2 certified inverter that carries out this grid control automatically.
The 10kW wind turbine was designed to fit mainly on a three phase supply, which requires no permission from the authorities. Connection is made using a G-83 relay which is an integral part of the inverter.
Wind Turbine Planning Permission
Do i need planning permission for a wind turbine?
At the moment, all wind turbine installations in the UK need full planning permission. However, most local authority Planning Departments are very supportive and new guidelines obligate planners to encourage renewable applications wherever reasonable.
How can i get planning permission for a wind turbine?
At Homeco Energy we will advise and guide you through the planning process from start to finish. We will also regularly liaise with the local planning authority to ensure the process goes as smoothly as possible. This should normally be decided within about two months following your initial application.
How much are planning costs for a wind turbine?
Costs vary between local planning offices, but £300 - £500 is the typical range of charges. We would always recommend checking with your local planning authority first.