| 摘要 |
<p>An apparatus for detecting a partial discharge in a high voltage transformer comprising a live tank (100) comprises a metal box (200) detachably connected to the tank (100); a first acoustic sensor (210) inside the box for converting acoustic waves in a first frequency band to a first electrical output signal; signal conditioning circuitry (216) inside the box for amplifying and filtering the first electrical signal; an electrical to optical converter (222), inside the box, for converting the amplified and filtered electrical signal to an optical signal; a fiber optic link (300) for carrying the optical signal to a location remote from the transformer; and an optical to electrical converter (402) at the remote location for converting the optical signal to a second electrical signal, the second electrical signal being indicative of a partial discharge inside the tank (100). The second electrical signal may be fed to an oscilloscope (500) or recording equipment (600) for determination of the occurrence of a partial discharge.</p> |
