The paper proposes a specification for the transient and steady-state responses of a hydroelectric power station operating in frequency-control mode. It can be used during design, testing and commissioning as well as forming the basis for contractual agreement on performance during normal operation. The specification gives a generic definition of how the electrical power should respond to step, ramp and random changes in frequency. The rationale for the proposed specification is discussed. A prototype transfer function is proposed as an aid to formulating a step response specification. The length of record required during random testing is discussed. The use of the specification is illustrated by considering the response of the Dinorwig pumped-storage hydroelectric station.
Jones, D. I., Mansoor, S. P., Aris, F. C., Jones, G. R., Bradley, D. A., & King, D. J. (2004). A standard method for specifying the response of hydroelectric plant in frequency-control mode. Electric Power Systems Research, 68(1), 19-32. https://doi.org/10.1016/S0378-7796(03)00152-4