METHOD AND DEVICE FOR CONTROLLING A GAS-INSULATED HIGH-VOLTAGE ELECTRICAL SUBSTATION

摘要

Method for controlling a gas-insulated high-voltage electrical substation (100), said electrical substation (100) comprising an Ultra High Frequency (UHF) internal sensor (150). The method comprises the steps consisting in acquiring substantially in parallel a first frequency spectrum of the signals of the internal sensor (150) and a second frequency spectrum of the signals of an external sensor (300) outside the electrical substation (100), calculating a frequency spectrum of the signal-to-noise ratio on the basis of the first spectrum and of the second spectrum, and determining the presence of at least one maximum of the signal-to-noise ratio which is a signature of the presence of at least one partial discharge. The invention also relates to a control device (400) used to perform this method and a method implemented by a computer (500) making it possible to implement said method with the control device (400).