Abstract

With the rapid development of magnetic field sensors, non‐contact monitoring by magnetic field measurement can provide an advanced sensing technology for the smart transmission and distribution network. Magnetic fields can store energy and act as the media for transferring energy. Magnetic field based energy storage/conversion may become one of the solutions for energy generation in smart grids. Magnetoresistance (MR) sensors have been applied to magnetic field measurement. Compared with Hall effect sensor, an MR sensor has higher sensitivity. Therefore, MR sensors can response to the speed change of the synchronous machine accurately and quickly. The operation status of the synchronous machine can be monitored by measuring the magnetic field of the synchronous machine. Magnetic field based measurement can directly detect the non‐symmetry of the structure, together with its non‐invasive character, hence will find more applications in future.

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