Mukha M. Dynamic compensation of reactive power in ship-based autonomous electric power systems

The thesis is devoted to the solution of the important scientific and technical problem of dynamic compensation of reactive power in the ship's autonomous electric power system, which includes generator sets with synchronous and asynchronous generators, typical active-inductive load and capacitor compensator of reactive power for increasing the speed, stability and reliability of such systems by means of the de-veloped laws of the regulators functioning of and their technical implementation. In the dynamic compensation system of reactive power, it is proposed to use the reactive conductivity of the load as a control variable, which will allow for changing the voltage and reactive current in the transient processes of load switching, to in-crease the speed and accuracy of the reactive power compensation process. The law of reactive power control with optimal structure and adjusting parame-ters for dynamic compensation of reactive power in the mode of starting an asynchro-nous electric drive with commensurable power is proposed, which, in comparison with direct starts, reduces twice the value of the total current of an autonomous gener-ator and reduces the oscillation at the final stage of the start-up process asynchronous motor. An integrated impulse control law for reactive power for an autonomous ship electric power system in the modes of switching static and electric load is developed, the use of which reduces the time of restoration of the voltage in the network with synchronous or asynchronous diesel generators up to 3-4 periods of alternating cur-rent. A method is suggested for increasing the speed of an autonomous electric power plant and reducing the dynamic deviations in the voltage of a synchronous generator when commutating a load of commensurate power by introducing an additional feed-back from the generator voltage stabilization channel to the reactive load compensa-tion channel, which significantly increases the speed and stability of such a facility. The practical implementation of the results is the creation of a full mission simu-lation complex of the ship's automated electric power system, which complies with the requirements of the International Convention on the Training and Certification of Seafarers and the Watchkeeping 1978 with amendments.