Advances in International Computer Science

This study developed a safety protection monitoring device for high-voltage cable joints, primarily comprising a fiber Bragg grating demodulator, fiber Bragg grating temperature sensors, and a perfluorohexanone fire suppression system. The fiber Bragg grating temperature sensors are installed on the outer surface of the cold-shrink insulation tube of the cable intermediate joint. Under high-current and high-voltage conditions, heat generated by factors such as excessive contact resistance or partial discharge is transferred through the cold-shrink insulation tube to the sensors. This heat transfer induces a shift in the reflected wavelength, enabling real-time online temperature monitoring of the cable intermediate joint. When temperatures exceed a preset threshold, the system triggers the perfluorohexanone fire suppression device to achieve cooling and fire extinguishing, thus fulfilling the purpose of protecting cable joints.

High-voltage cable joint; Fiber Bragg grating demodulator; Fiber Bragg grating sensor; Perfluorohexanone