If an external BA with a frequency bias of 20MW/0.1Hz sees a frequency of 60.02 Hz due to a loss of load, approximately how much generation change would the BA experience?

To understand how much generation change the Balancing Authority (BA) will experience given the frequency bias and the observed change in frequency, we need to apply the concept of frequency bias.

Frequency bias is a measure of how much generation a balancing authority will adjust in response to changes in frequency. In this case, the frequency bias is specified as 20 MW per 0.1 Hz, indicating that for every 0.1 Hz change in frequency, the BA will increase or decrease generation by 20 MW.

When the BA sees a frequency increase from the nominal value of 60 Hz to 60.02 Hz, it experiences a frequency change of 0.02 Hz. To calculate the expected generation change, we can use the following equation based on the frequency bias:

Generation change = Frequency bias × Frequency change

Plugging in the values we have:

Generation change = 20 MW/0.1 Hz × 0.02 Hz

This simplifies to:

Generation change = 20 MW × (0.02 / 0.1)

= 20 MW × 0.2

= 4 MW

Since the frequency increased, indicating that the system is experiencing a surplus of generation relative to load, the