Sun Lipeng

TL;DR: In this paper, a GIS risk evaluation method was proposed based on partial discharge live detection, where a partial discharge signal is acquired through an ultra-high-frequency antenna and an ultrasonic wave sensor, and through analyzing partial discharge type and analyzing partial-discharge severity, the type and severity of a certain partial discharge were obtained; furthermore accurate positioning on a partial-source is realized according to two ultrahighfrequency signals or two ultrasonic-wave signals; and risk grade can be accurately evaluated comprehensively according to operation information and maintenance information of the GIS.

TL;DR: In this article, a calibration device and a calibration method for calibrating the performance of ultrasonic partial discharge sensors is presented, which comprises a frequency modulation and amplitude modulation sine signal generator, an acoustic emission sensor, a test block, a reference sensor, an oscilloscope and a signal acquisition module.

TL;DR: In this article, a utility model discloses a calibrating installation for ultrasonic wave partial discharge sensor performance installs including amplitude modulation sinusoidal signal generator, acoustic emission sensor, test block, reference sensor, oscillograph and signal acquisition module.

TL;DR: In this article, a method for grading transformer station partial discharge live detection electromagnetic interference signals is proposed, which uses the interference signal intensity and discrete degree as the basis of interference grading, objectively and accurately grades the interference grades, quantitatively describes the interference signals, and provides a reference basis for a standardized interference test platform.

TL;DR: In this paper, a transient state ground voltage partial discharge detector verification system, including center control unit, amplitude modulation signal generator, signal conditioning module, coaxial cable, function test platform and location test platform, is presented.