适于电缆线路故障判别的柔性光学电流互感器

提出适于集中式线缆故障区段判别的柔性全光纤光学电流互感器( FOCT)。采用反射式共光路互易结构，提高产品的测量精度、温度性能及抗振能力。提出基于非对称方波调制信号的闭环解调算法，提高系统的动态测量范围、温度性能及稳定性。设计了柔性传感光缆，及现场带电安装、调试及维护方案，提高了产品运用的灵活性，扩展了产品的运用领域，降低了产品安装及维护的成本。

A flexible optical current transformer for centralized cable fault identification applications

A flexible all-fiber optical current transformer (FOCT) for centralized cable fault section identification application is presented. The reflective reciprocal optical structure is adopted to improve the measurement accuracy, temperature and vibration resistance performances. The asymmetric square wave modulation signal based closed-loop demodulation algorithm is proposed to improve the dynamic measurement range, temperature performance and stability of the system. The flexible sensing cable and schemes for hot-line installation, commissioning and maintenance applications are designed, which can improve the flexibilities of the product applications, and expand the application fields as well as reduce the installation and maintenance costs of the products.