Analysis of Power System's Power-Density Spectra

The power-density spectrum of a power system's voltage is determined by considering it as a frequency-modulation (FM) process. The load on the system is represented by a gaussian, stationary, white-noise type of random variable. The influence of system parameters such as inertia, governor droop, servomotor time constant, and a transmission link with another system are investigated. This investigation is carried out numerically, using specific parameter values on a digital computer.