System for detecting and indicating partial discharges and voltage in high-voltage electric power distribution systems

A system for detecting and indicating partial discharges and voltage in a high-voltage electric power distribution system, or an installation, which includes electrical equipment, the system comprising:

• a) at least one capacitive voltage tap integrated in the electrical equipment and configured to capture signals from the power distribution system;
• b) at least a first circuit integrated in the electrical equipment and configured for measuring/detecting and indicating presence or absence of voltage in the power distribution system;
• and
• c) at least a second circuit for detecting and indicating partial discharges, electrically connected to the capacitive voltage tap and to the first circuit for measuring or detecting and indicating a presence or an absence of voltage;
• wherein the system is configured for the capacitive voltage tap to provide the voltage signal for the first circuit and for the second circuit, such that starting from the voltage signal, the system indicates the presence or absence of voltage and/or the presence or absence of partial discharges;
• wherein the capacitive voltage tap is integrated in at least one bushing of the electrical equipment;
• wherein the first circuit comprises at least one voltage measuring element and at least one voltage signal detector and indicator;
• wherein the second circuit is connected to the voltage measuring element or to the voltage signal detector and indicator;
• and
• wherein the second circuit for detecting and indicating partial discharges comprises at least one signal amplifying or rectifying element, at least one peak detector element and/or at least one integrator element.