Abstract
Modern means of protecting ship’s electrical power systems from overload are considered. It is shown that a promising approach is the implementation of preventive protection. This protection allows providing power supply to the most important consumers of the vessel through structural switching without going into an emergency state, in which a blackout of vessel will take place. Definitions of the main concepts used in the work are given and analyzed. The content of the concepts, state and survivability which are fundamental in the synthesis of algorithms for preventive protection of ship electrical power are disclosed. It is noted that the concept of survivability given in the standard requires clarification, and the concept of state is characterized by internal parameters of the object under study and is continuously changing. At the same time, it is possible to distinguish stable types of states that are fundamental in the synthesis of algorithms for preventive protection and unloading of ship electrical power systems. The functional diagram of the device providing preventive unloading of ship electrical power systems based on the ideas of smart control is considered. It is noted that control options are possible for independent and dependent tolerances that determine the area of operability of the equipment in the technical implementation of the unit for identification and the unit for monitoring the operating condition of the object under study. A structural diagram showing identification of the technical condition of the object under study is given. It based on fuzzy logic, which allows synthesizing elements of the device for preventive unloading of the ship's electrical power system based on smart protection methods. An example of the practical implementation of the proposed device for preventive unloading of a ship's power plant is considered. This power plant includes two generator units. A distinctive feature of the preventive unloading algorithm and the device implementing it is the ability to disconnect not only secondary but also important consumers of electrical energy.
Published Version
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