An Analytical Method for Determination of Transient Voltage Deviations in an Autonomous Power Supply System under the Effect of Deterministic Disturbances

The determination of voltage deviations at the output of autonomous power supply system related to a sharp change in the load as a disturbing factor is considered. The main attention is focused on simple discrete circuits of an autonomous power supply system consisting of several elements. Such devices are used in telecommunication devices when setting up uninterrupted power supply to relay protection and other devices. Series-connected circuits of elements are analyzed. The Duhamel integral is used for mathematical description of changes in the output coordinates. Analytical expressions making it possible to calculate the transient voltage deviations in such circuits as a those of “diesel generating plant—rectifier” and “uncontrolled chemical current source—inverter” are obtained. It is confirmed that this approach can be used in practice.