Development of an operational hydroturbine governor

Requirements of a hydroturbine governor system are considered, including safety constraints and the interface with the power station equipment. The microprocessor system used is described and the structure of the software, whose principal function is the solution of the controller differential equations, is discussed. The programme of tests to confirm operation of the microprocessor system in the laboratory and in the power station included extensive use of real-time simulation of the plant (a 32.5 MW turbine generator) to which the governor was connected.