Checking the efficiency and operability of the eliminating power exchange oscillations method in the electrical power system of sea vessels

Abstract

At the parallel operation of diesel generator sets in the sea vessels electrical power system the presence of power exchange oscillations is recorded. Power exchange oscillations adversely affect the operation of electrical equipment and automation systems of sea vessels. The results of mathematical modeling allow us to conclude that it is expedient to adaptively change the transmission coefficient of governor to reduce the amplitude of exchange oscillations. To study various technological modes of operation of a ship power plant with a different number of generators operating in parallel, the values of active resistances are set in the mathematical model instead of generating machines, while a large value of active resistance corresponds to a disconnected generator, and a small value of active resistance corresponds to a generator set connected to the main switchboard. To test the performance and efficiency of the method based on changing the settings of the governor, it is proposed to conduct computer simulations with dynamic implementation. A method has been developed for determining the value characterizing the current amplitude of power exchange oscillations by a computer automatic control system. Conclusions are drawn about the efficiency of the eliminating power exchange oscillations method, the results of testing the method obtained using the developed computer program allow us to recommend the introduction of a block for eliminating power exchange oscillations in the control systems of electrical power system on sea vessels.