The invention relates to an integrated fault diagnosis method and a system for turn-to-turn discharging of a transformer. The method comprises the steps of collecting ultrahigh-frequency partial discharging signals, ultrasonic partial discharging signals, pulse current partial discharging signals, primary voltage signals, secondary voltage signals and primary current signals; synchronously collecting and processing the ultrahigh-frequency partial discharging signals, the ultrasonic partial discharging signals, the pulse current partial discharging signals, the primary voltage signals, the primary current signals and the secondary voltage signals for recognizing the source type of partial discharging of the transformer; and comprehensively processing the ultrahigh-frequency partial discharging signals, the ultrasonic partial discharging signals, the pulse current partial discharging signals, the primary voltage signals, the primary current signals and the secondary voltage signals after being processed for obtaining the fault assessment of partial discharging of the transformer and achieving integrated fault diagnosis of turn-to-turn discharging of the transformer.

Integrated fault diagnosis method and system for turn-to-turn discharging of transformer

The present invention relates to an ultrasonic wave and ultraviolet light-based arc detection apparatus for a power control facility and a method thereof which can more effectively detect whether an arc is generated by using both ultrasonic waves detected in a 30 to 48 kHz band and ultrasonic waves detected in a 1 to 20 MHz band. The arc detection apparatus comprises: a first ultrasonic sensor sensing first ultrasonic waves in a 30 to 48 kHz band according to the occurrence of an arc; a second ultrasonic sensor sensing second ultrasonic waves in a 1 to 20 MHz band according to the occurrence of the arc; an ultraviolet light sensing unit sensing ultraviolet light according to the occurrence of the arc; a control unit finally checking and notifying of the occurrence of the arc after additionally checking whether the ultraviolet light is sensed when the first and second ultrasonic waves are simultaneously sensed; and a power supply unit generating and providing a drive voltage for the first and second ultrasonic sensors and the control unit through commercial power.

Apparatus and method for arc detection based on ultra-sonic and Ultraviolet light of electric power equipment

Partial discharging signal detector of power equipments and method thereof

PURPOSE: A partial discharge signal detection device of power facilities is provided to effectively extract effective partial discharge signals in the presence of field noise signals through the improvement of detection sensitivity and diagnosis reliability. CONSTITUTION: A partial discharge signal detection device of power facilities includes multiple ultrasonic sensors(10), multiple UHF(Ultra High Frequency) sensors(20), and a control part(40). The multiple ultrasonic sensors detect acoustic signals emitted in case of partial discharge at power facilities. The multiple UHF sensors detect electrical signals caused by the flow of leakage currents generated by the partial discharge. The control part extracts partial discharge signals through the acoustic signals and electrical signals which are inputted from the multiple ultrasonic sensors and UHF sensors, analyzes the generation location of the partial discharge signals, and diagnoses the characteristics of the partial discharges. [Reference numerals] (10) Ultrasonic sensor; (20) UHF sensor; (30) Data collection device; (40) Control part; (50) Output part

Ju Sang Su

Papers

Partial discharging signal detector of power system