To avoid introducing significant unbalanced loads into the three-phase power grid,the contact net-work of electrified railways in China generally rotates phase sequence power supply every certain length.The regular operation of the automatic phase separation device requires the magnetic sensors set on both sides of the track to provide timely and accurate information about the phase separation zone.Therefore,it is necessary to use detection equipment to conduct periodic tests of the magnetic sensors.Therefore,it is necessary to use de-tection equipment to detect the magnetic inductors periodically.This article proposes an evaluation method for ground magnetic induction test equipment based on uniform magnetic fields,which uses double parallel coils with good openness to generate an extensive range of uniform magnetic fields,thus achieving technical status evaluation of ground magnetic induction test equipment without disassembly.The design principle of the dual parallel coils was analyzed through analytical and numerical calculations,and a prototype was manufactured to experimentally verify the effectiveness and necessity of the proposed evaluation method.
关键词
电分相/自动过分相/磁感应器/磁感应强度/匀强磁场/误差评定
Key words
electric phase separation/automatic passing phase insulator/magnetic inductor/magnetic induc-tion intensity/uniform magnetic field/error calibration
维普
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