The scheme for the distribution of electric power of the tanker "Ligovsky Prospekt" containing three diesel generator sets with brushless three-phase synchronous generators with an active capacity of 750 kW, a total power of 937.5 kVA, a voltage of 440 V, a frequency of 60 Hz, a rated current of 1203 A, a power factor of 0 ,8. The main power quality indicators and the requirements for them of the IEC and the Russian Maritime Register of Shipping are given. The characteristics two devices "Energotester PKE-06" of domestic production are described with the help of which the main energy indicators (phase and line voltages, phase and linear currents, active, reactive and full power, load power factor, load factor) and power quality indicators (voltage deviation, frequency deviation, non-sinusoidal coefficient and others) on a tank with single operation of dieselgenerator sets (DGA) and with parallel (running, maneuvering, parking in the roadstead) in the electric circuits of generators and receivers (electric drives: electric drive of ballast pump No. 2, power 315 kW, electric drive of inert gas fan, power 126 kW, electric drive of ballast pump No. 1 , the power of 160 kW). The duration of the measurement for running, maneuvering and parking mode in the roadstead was at least 24 hours with 30 minutes averaging. The analysis of power quality indicators based on their measured values and graphical dependencies on time showed the compliance of the quality of electricity with the requirements of the IEC and the Russian Maritime Register of Shipping.
Based on the analysis of requirements of normative documents and technical literature considers the characteristics of the three types of light sources: incandescent, fluorescent and led. The prospects of led light sources according to the main technical characteristics: luminous efficiency and lifetime.The main attention is paid to consideration of led lamps (DM), a typical scheme of power supply of SD. The issues associated with electromagnetic compatibility of SD. Noted that led light sources being non-linear loads distort the sine wave of the supply voltage and generate the network of higher harmonic (SH) components of a current that have a negative impact on supply mains, compromising the overall electromagnetic environment. To assess the possibility of functioning of the lighting systems of the courts on the basis of SD of the lamps were held the experimental research of power characteristics, which are listed in article a laboratory setting. The results of laboratory studies of SD showed the ability of electromagnetic compatibility of CD in marine power systems. It is indicated that for a number of SD lighting inrush current can reach ten values relative to the nominal that must be considered when selecting the switchgear and protective devices, especially in lighting systems with low power consumption. For ship characteristic network voltage fluctuation causes changes of luminous flux, which is negatively perceived by the person. Studies have shown that some SD lamps is constant luminous flux, regardless of the mains voltage and must be recommended for installation in networks of marine lighting.The lack of existing regulations and sanitary regulations and methods of control for SD lighting. Conclusions about the absolute prospects as led light sources for ships.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.