Flexible alternating current/direct current electronic transformer checking device based on mixed sampling
An electronic transformer and mixed sampling technology, which is applied in the direction of measuring devices, instruments, and measuring electrical variables, can solve the problems that the calibration work cannot be truly completed, and the calibration work of AC and DC electronic transformers cannot be compatible. Facilitate system implementation, increase DC accuracy test, and reduce difficulty
Active Publication Date: 2015-12-30
ELECTRIC POWER SCI RES INST OF JIANGSU ELECTRIC POWER +2
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The invention discloses a flexible alternating current/direct current electronic transformer checking device based on mixed sampling. The flexible alternating current/direct current electronic transformer checking device comprises a primary rising current circuit, a high-precision alternating current AD acquisition circuit, a high-precision direct current AD acquisition circuit, a standard transformer, an I/U converter, a main-control CPU module and a digital value acquisition module; an electronic transformer body to be checked is connected in series with the standard transformer and the primary rising current circuit sequentially through an optical fiber; the standard transformer is connected with the high-precision alternating current AD acquisition circuit; the primary rising current circuit is connected with the high-precision direct current AD acquisition circuit; the high-precision alternating current AD acquisition circuit and the high-precision direct current AD acquisition circuit are connected with the main-control CPU module; a merging unit is connected with the main-control CPU module through the digital value acquisition module; the main-control CPU module also sends synchronous signals to the high-precision alternating current AD acquisition circuit and the digital value acquisition module. Through the adoption of the device, alternating current and direct current checking of the transformer in a UPFC can be realized, the use is convenient, and the application prospect is excellent.
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