System and method for calibrating receiving performance of partial-discharge ultrahigh frequency detection device

The invention relates to a system for calibrating receiving performance of a partial-discharge ultrahigh frequency detection device, and the system comprises a giagahertz transverse electromagnetic cell (GTEM) transmission cell, a standard pulse generator, a measure and control computer and a high-speed broadband oscillator, which are sequentially connected with one another through a conducting wire, wherein the high-speed broadband oscillator transmits a branch signal to the GTEM transmission cell, the top of the GTEM transmission cell is provided with a special test window which is provided with a reference sensor and a tested sensor, and the reference sensor and the tested sensor are respectively connected with the high-speed broadband oscillator. The invention also relates to a calibration method by adopting the system. The calibration system and the calibration method have a broadband property and low cost, and not only can be used for electromagnetic radiation sensitivity test, but also can be used for the electromagnetic radiation test; and moreover, the instruments used in the system and the method are simple to configure, low in cost and capable of being used for rapid and automatic test.