Apparatus and methods for metering of renewable energy devices

摘要

A metering apparatus is used to meter at least one renewable energy device that derives energy from a renewable energy source such as a wind turbine 32 or combined heat and power (CHP) generator 34. The apparatus includes an electronic control unit 46 an energy sensor 44. The energy sensor 44 measures an energy parameter that is affected by an energy output of the renewable energy device. In the case of the embodiment shown in Figure 8 the energy sensor 44 is an electrical load sensor that measures electrical load flowing in the connection 42a between a supply busbar 36 and a distribution panel 42. The electrical load sensor provides energy data in the form of electrical load measurements to the electronic control unit 46. The electronic control unit 46 uses the energy data to derive a profile of the change in the energy parameter and correlates the derived profile with a reference profile corresponding to the particular type of renewable energy. The results of the correlation and the energy data are then used to quantify the energy output of the renewable energy device over a selected period of time.