Ship power grid parameter real-time monitoring system and method

Abstract

The invention discloses a ship power grid parameter real-time monitoring system and method. The ship power grid parameter real-time monitoring system includes a signal conditioning unit, a data acquisition unit, a data processing unit, a communication interface circuit, an external expansion memory, and a frequency detection module, wherein the signal conditioning unit comprises a resistor dividernetwork, a current transformer, and a low-pass filter; and the low-pass filter is arranged between the resistor divider network and the data acquisition unit or between the current transformer and the data acquisition unit. The ship power grid parameter real-time monitoring system effectively converts the energy of a bicycle brake into electrical energy. The ship power grid parameter real-time monitoring system introduces the low-pass filter LPF before sampling, thus filtering the spectral components higher than the sampling frequency in the continuous signal so as to reduce the possibility of spectrum aliasing, ensuring that the basic spectrum of the sampling signal maximally approaches to the spectrum of the original continuous signal, effectively filtering high frequency interference and avoiding sampling effects caused by harmonic pollution.

Description

technical field [0001] The invention relates to the technical field of power grids, and more specifically, to a system and method for real-time monitoring of ship power grid parameters. Background technique [0002] The ship power grid is an independent small power grid. Unlike the land power grid, the power quality of the ship power grid is extremely susceptible to load changes. Especially in recent years, with the increasing proportion of marine electrical equipment, nonlinear and impact loads are increasing, these loads have caused serious pollution to the power quality of the power supply system, and the parameters that can be detected by traditional ship power grid monitoring devices are relatively Less, and it is impossible to accurately monitor the parameters of the ship power grid containing harmonics, and harmonic pollution is an increasingly serious problem affecting the power quality of the ship power grid. Contents of the invention [0003] The technical probl...

AI Technical Summary

Problems solved by technology

Especially in recent years, with the increasing proportion of marine electrical equipment, nonlinear and impact loads are increasing, these loads have caused serious pollution to the power quality of the power supply system, and the parameters that can be detected by traditional ship power grid monitoring devices are relatively Less, and it is impossible to accurately monitor the parameters of the ship power grid containing harmonics, and harmonic pollution is an increasingly serious problem affecting the power quality of ship power grids

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