Analysis of Power Oscillations Parameters in Autonomous Electrical Complexes Using the Method of Customization Charts Designing

The problem related the existence of power common mode and power exchange oscillations during the parallel operation of synchronous generators in autonomous electrical complexes is considered. A mathematical model, which allows the studying electrical system, has been developed. A method for dependence customization charts designing of the power exchange oscillations amplitude on the backlash gaps in the control circuits of the diesel generator speed has been obtained. The use of such customization charts allows one to introduce recommendations on limiting the amplitude of exchange power oscillations in regulatory documents, both a general nature and specifically for certain equipment type. The customization charts also make it possible to determine the gap backlash in the frequency control loop with the help of the measured amplitudes of the power exchange oscillations. The amplitude's values and period of the power common mode oscillations in the entire possible settings' range of the object being studied are obtained using mathematical simulation methods. A methodology for customization charts designing has been developed. This methodology allows designing dependence customization charts of the amplitude and period of power common mode oscillations on the values of transmission coefficients and speeding settings of the governors of diesel generators. Using these customization charts allows you to apply the method for eliminating exchange power oscillations, taking into account the possible occurrence of power common mode oscillations. Customization charts designing for the amplitude and period of the power common mode oscillations makes it possible to understand the trend in the amplitude and period of the power common mode oscilations and carry out an in-depth analysis of the operation of the autonomous electrical system.