Speed-Regulation Tests on a Hydro Station Supplying an Isolated Load

The purpose of this paper is to present the results of speed-Regulation tests at a hydro station supplying an isolated load for small load changes, and to compare the shape and magnitude at the speed transients with calculated values as obtained from an analog computer solution of the governor equation. The tests as carried out were considered unique in that the power customer was able to reject and apply step load changes in varying increments by switching a resistive-type electric furnace.