Skip to main content

Greenbyte Documentation

Energy Export (Turbine)

Energy export corresponds to the energy generated by a wind turbine during a defined period. This signal uses the data from energy counters in wind turbines as the primary source. The energy export signal can be displayed based on the chosen signal resolution.

Technology

Wind

Remarks

Energy export signals can appear in both data sources: Sum over time and counter over time.

The values displayed in the counter over time are values measured directly from the SCADA system.

The values displayed in sum over time are values calculated by the platform based on the signal selected. In this case, the platform will use the counter values (shown in counter over time).

The data in sum over time can be also displayed as a cumulated sum in the data studio section. The cumulate sum value will consider the increment of the signal between two measurements.

This signal should not be confused with the GMS energy exports coming from the grid meters located at the substation.

During a data loss period, it is possible to get energy export values by interpolating with the last value before data loss and the first value after data recovery.

Equation

A measured signal from the SCADA system. No equation is applicable.

Inputs

Input is not applicable. This is a measured signal.

Energy export (4): Wind turbine energy export

Usage Example

In this example, we use data studio to show the energy export signals. Figures 1 and 2 show the energy export as a raw signal in counter over time for two-time stamps at 3:50 and 4:00. If we plot the same signal in sum over time, we will then realize that these signals used the difference between the counter measurements to show the energy value. In this case, the difference in the time stamp is 10 min. Therefore, the signal in sum over time is calculated as the difference between 62 056 755 000 KWh and 62 056 755 000 leading to the displayed value in Figure 3 of 0 kWh for the time stamp at 4:00.

Figure 1. Energy Export Signal in Data Studio Using Counter Over Time Showing the Time Stamp 3:50
Energy Export Signal in Data Studio Using Counter Over Time Showing the Time Stamp 3:50


Figure 2. Energy Export Signal in Data Studio Using Counter Over Time Showing the Time Stamp 4:00
Energy Export Signal in Data Studio Using Counter Over Time Showing the Time Stamp 4:00


Figure 3. Energy Export Signal in Data Studio Using Sum Over Time With a Resolution of 10 min
Energy Export Signal in Data Studio Using Sum Over Time With a Resolution of 10 min


It is also possible to display the value of sum over time as a cumulated value as shown in Figure 4. It is important to note that the sum over time starts counting from zero based on the period that was selected, while the counter over time just takes the signals from the counter as they come. Therefore, we can see that the value at 4:00 for the sum over time with the cumulated option enabled does not match the value of the counter over time at 4:00 time (see Figure 1).

Figure 4. Energy Export in Data Studio Using Sum Over Time With the Cumulated Option Enabled
Energy Export in Data Studio Using Sum Over Time With the Cumulated Option Enabled