基于金刚石NV色心的电流传感技术及其标准化研究初探

为推进量子化电流传感技术的落地应用,探讨了基于金刚石NV色心的电流传感技术,初步研究了其标准化技术。首先,介绍了金刚石NV色心的结构和物理特性,分析了基于金刚石NV色心的光学特性及自旋量子相干性的电流传感测量原理,研究了磁噪声抑制、磁测量灵敏度提升和测量芯片小型化等实用化技术;然后,分析了基于金刚石NV色心的电流传感测量技术的技术优势和标准化需求,提出了标准体系建设建议,为基于金刚石NV色心的电流传感技术研究、设备研制及传感测量系统落地应用提供技术支撑。

电力系统宽频宽动态电流量测技术研究综述

新型电力系统要求电流互感器具备宽频带、宽量程、高准确度性能,以满足电网呈现出的时频域宽动态、多参量等新特征。因此,从磁场传感的机理出发,对电流测量传感耦合原理简要介绍,分别阐述了这些技术的优缺点、拓扑结构。重点讨论了各类电流传感装置的结构特点、性能参数及量测性能优化方案,最后总结了目前亟待解决的问题、发展趋势和应用前景。光学电流互感器技术日趋成熟,应用广泛。基于NV色心的磁传感技术在测量性能方面已经超过传统传感器,配合光纤传感技术环境适应性强,电流测量领域前景广阔。

Development of Fiber-Optic Current Sensing Technique and Its Applications in Electric Power Systems

This paperdescribes the development and applications of a fiber-optic electric current sensing technique with the stable properties and compact, simple, and flexible structure of the sensing device. The special characteristics of the sensors were achieved by use of the special low birefringence fiber as the Faraday-effect sensing element and were also achieved with creation of sensing schemes which matched with the features of the fiber. Making use of the excellent features of the sensing technique, various current monitoring devices and systems were developed and applied practically for the control and maintenance in the electric power facility. In this paper, the design and performance of the sensing devices are introduced first. After that, examples of the application systems practically applied are also introduced, including fault section/point location systems for power transmission cable lines.