Cable partial discharge and cable temperature on-line integrated monitoring method

The invention discloses a cable partial discharge and cable temperature on-line integrated monitoring method, which comprises the following steps: S1) winding a temperature measurement optical cable on the surface of a cable, and coating the surface of an optical fiber in the temperature measurement optical cable with an inorganic polymer coating for absorbing the energy of ultrasonic waves and converting the energy into heat energy; s2) detecting a spectrum and light intensity containing temperature information in a reflected wave through a reverse Raman scattering effect by adopting a laser pulse; and S3) when the temperature rise curve speed of a certain point position is greater than a preset threshold value and the temperature of the point position is higher than the average temperature of the surface of the cable by a preset temperature in the same day, cable partial discharge alarm is given. A distributed optical fiber sensing system is adopted, partial discharge warning of the whole power cable, posit