AN EXAMPLE OF APPLYING ALGORITHM TO CREATE THE APQ OF A HYDROGENERATOR-TURBINE UNIT

Abstract

The work describes the application of the methodology of defining the actual PQ diagram (APQ)  on the example of Hydrogenerator-turbine unit No. 3 at Vinodol HPP. Used as a basis for determining  the unit’s operating tolerances was a block diagram which provides a clear survey of the  sequence of steps required to create an APQ. All intermediate steps are documented and the  obtained results are shown in tables and graphics. Each of finally defined limits is imported into  the APQ of the observed unit. Considering the complexity of calculating the limit conditions imposed  by electromagnetic and thermal occurrences in the end region, in a concrete example from  practice the present work describes an entirely new methodology of determining the limit values  of the longitudinal magnetic induction component, based on the results of measuring induction  and pertaining over-temperature in the generator’s permanent capacitive operation.