| Abstract: | AFC control of BTB active power flow, which is in phase with frequency deviations both in the Hokuriku AC power system and in the rest of the power system of central and western Japan, can effectively reduce frequency fluctuations. In the first section of this paper, test measurements of real large‐scale power system fluctuation loads are presented and a dynamic fluctuation load model is derived from a study of the test results. We then analyze the effectiveness of this AFC control in reducing frequency fluctuations in the two AC power systems by static and dynamic computational simulations, using our model in MATLAB. Our simulation analyses reveal that the effectiveness of frequency fluctuation reduction by AFC control on BTB active power depends on the capacity scale of the AC power system interconnected with the BTB system. We performed these computations for different states of the power systems, representing summer peak, winter peak, typical spring peak, and summer night conditions. We confirmed that frequency fluctuations can be significantly reduced in a smaller capacity power system by setting a larger AFC gain. © 2001 Scripta Technica, Electr Eng Jpn, 136(4): 15–25, 2001 |
