The parameters of excitation current of ship synchronous generator as the diagnostic symptoms of the propelling IC engine

Abstract

For ships, the total loss of electrical power, 'blackout', is a critical failure. The failure of the marine power supply system not only results in loss of ability to perform tasks, but also poses a threat to human life and often to the environment. No less serious emergency is 'partial blackout', i.e. the loss of electricity in parts of the electrical system. Designers are introducing technical and system solutions to minimise the likelihood of power failure and to support its recovery in a timely manner. One of the methods to minimise the likelihood of power failure is to identify and then monitor diagnostic symptoms that are susceptible to approaching the failure of key components of the power system. This article discusses the use of recording and analysis of changes in voltages and excitation currents in parallel synchronous generators to determine the threshold above which their parallel operation can lead to an emergency power failure.