volume | PIER Journals

Abstract

With the development of smart grids and the high proportion of new energy integration, traditional electromagnetic power metering technology is gradually facing bottlenecks in terms of accuracy, anti-interference ability and frequency response range. This paper proposes a new ultra-high-precision power measurement method based on diamond nitrogen-vacancy (NV color center) quantum sensing. By establishing an electromagnetic field-spin quantum state coupling model, it achieves microtesla-level magnetic induction intensity measurement, and then reconstructs current, voltage and power parameters. At the theoretical level, the response function of the multi-pulse quantum manipulation sequence (XY8-K) to the power frequency alternating magnetic field was derived, and an adaptive quantum state locking algorithm was proposed to suppress environmental noise. At the device level, a multi-layer heterogeneous integrated miniaturized quantum sensing chip was designed, combining silicon-based photonic waveguides and microwave resonant structures. Its size was controlled at 8×8×2 mm³, and its power consumption was less than 200 mW. Experiments show that this system has a remarkable effect and provides technical support for the next generation of intelligent metering equipment.

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Dr. Tong Wang

Dr. Jia Xi

Dr. Xin Li

Dr. Shengjie Mu

Dr. Yusheng Cai