Regulator for regulating the number of revolutions and the power in an electric power generating assembly

The invention concerns arrangements for control of the function of electric power generating assemblies. A regulator for regulating the number of revolutions and the power of an electric power generating assembly contains a so-called PID shaper 3, which is composed of a derivation link 10 and a proportional link 11, an integrator 12 and an adder arrangement 13, whose output is connected to the input of the integrator 12. The signals produced by the shaper 3 are taken to an arrangement 2 for control of the assembly's drive arrangement. The regulator further includes a pre-setting arrangement 4, which ensures that an electric signal - while the assembly is operating in an electric power system - is sent to one input 15 of the adder arrangement 13 upon transfer of an external order which is intended to increase or decrease the power of the assembly. The other input 14 of the adder arrangement 13 is designed to receive the algebraic sum of signals, one of which is proportional to a frequency deviation in the electric power system and the other signal is comprised of a feedback signal and depends on the static properties of the regulator, while the third signal changes in proportion to the output signal change through the integrator 12, which will be produced by the transfer of the external order. The invention can be used in systems for control of power plant operation.