Criteria allowing for classifying topologies of reversible and nonreversible generator and generator thyristor systems of TPP (tidal-power plants) electric-power generation are proposed. The application of direct generator-thyristor power-generation systems with water turbines with unidirectional and bilateral rotation, synchronous generators, and double-link FCs (frequency converter) is most appropriate for designs of promising TPPs. The used impact range of tidal waves is not limited in these power-generation systems, which allows one to increase the electric power output. The use of the FC with the pulse-duration modulation without the use of additional devices provides its EMC with the generator and the power system and, as a whole, increases the efficiency of the power-generation system. Because of the reduced consumption of the reactive power of distortion from the synchronous generator, its maximum use with respect to the installed capability is provided practically without an increase in heating from losses due to higher harmonics generated by the FC. The presence of this FC in the power-generation system provides autonomous operation of the TPP in the case of separation of the TPP from the power-generation system. In the case of relatively narrow ranges of tidal impact, it is in principle possible to use a differential generator-thyristor electric-power-generation system for TPPs with use of an asynchronized synchronous generator and an FC in the winding of the generator rotor. In spite of the more complex construction of this generator, the generator-thyristor electric-power generation systems based on it have a series of positive properties with regard to TPPs. Thus, the possibility of an asynchronized synchronous generator operating with a frequency above and below that of the synchronous one and with a synchronous speed allows regimes of generation and consumption of active and reactive power in this system. At the same time, it is most appropriate to use a double-link FC with pulse-duration modulation in the differential system.


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    Title :

    Classification of Electric-Power-Generation Systems of Tidal-Power Plants


    Additional title:

    Klassifizierung elektrischer Stromerzeuger für Gezeitenkraftwerke


    Contributors:

    Published in:

    Publication date :

    2014


    Size :

    6 Seiten, Bilder, Tabellen, 16 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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