AC submarine cable conductor temperature calculation formula for on-line monitoring

The invention provides an alternating current submarine conductor temperature calculation formula for online monitoring. According to the formula, the conductor temperature of an alternating current submarine cable in a normal operation state can be calculated by utilizing optical fiber temperature and conductor current obtained through online monitoring. According to the formula, the influence of sheath ring current on the conductor temperature in the normal operation state of the alternating current submarine cable is considered, that is, an induced current component caused by conductor current and a capacitive current component caused by conductor voltage exist in a sheath. Through a conductor temperature calculation formula in the invention, the conductor temperature of the AC submarine cable obtained by using online monitoring data is more in line with an actual condition, the accuracy of online temperature monitoring is improved, and a guarantee is provided for safe operation and maintenance of the subm