抄録
The surge tank of a hydraulic power station is designed to absorb the surges in the pressure tunnel at the load-trip of the generator.
Recently automatic frequency control has been studied in the electric power systems, but before practice this method, it is necessary to re-investigate the capacity of the surge tanks of hydraulic power stations.
In this paper, the author gives a way to estimate how much control gain can be expected from a hydraulic power station with a simple surge tank, when controlled by this method.
By using an analog computer he calculates the variation of the water level in the surge tank under resonance with sinusoidal load change when the generator-load is cut-off. This is done in accordance with the statistical calculation of the water level variation, using the RMS-error method developed by Phillips.
