| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To perform normal LFC and secondary battery LFC together as LFC to alleviate a load of a secondary battery. <P>SOLUTION: A method of controlling a load frequency of a power system performs load frequency control by a normal variable power supply including a thermal power generator and a hydraulic power generator (a normal LFC) and load frequency control by a secondary battery (a secondary battery LFC) together. A value obtained by subtracting a fixed power supply output Pfix and a normal variable power supply output Pvar from a demanded power Pdem is defined as a normal LFC control residual quantityεLFC. In the case that the normal LFC control residual quantity is within a threshold range, the normal LFC is performed independently based on the normal LFC control residual quantityεLFC. In the case that the normal LFC control residual quantityεLFC is out of the threshold range, a value obtained by subtracting a secondary battery output Pbatt from the normal LFC control residual quantityεLFC is defined as an interlinking line flow output Ptie and as a secondary battery LFC control residual quantity, and the secondary battery LFC is performed based on the secondary battery LFC control residual quantity, and the normal LFC is performed based on the normal LFC control residual quantityεLFC. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
