摘要：【中文】本发明公开了一种电力金具功率的在线监测方法、系统及存储介质，该监测方法包括如下步骤：获取电力金具的表面温度、质量及比热容；根据电力金具的表面温度拟合计算得到热时间常数和稳态温升值；根据热时间常数、稳态温升值、质量及比热容计算得到电力金具所消耗的功率值。通过实施本发明，可以根据采集的电力金具的表面温度得到热时间常数和稳态温升值，根据电力金具的稳态温升值、质量、比热容及热时间常数，即可计算得到电力金具所消耗的功率值。此外，通过实施本发明可以实现电网系统中电力金具消耗功率的在线监测，同时，该监测方法不仅可以用于直流输配电线路，还可以用于交流输配电线路中，扩展了该监测方法的适用范围。 【EN】The invention discloses an electric power fitting power on-line monitoring method, a system and a storage medium, wherein the monitoring method comprises the following steps: acquiring the surface temperature, the mass and the specific heat capacity of the electric power fitting; fitting and calculating according to the surface temperature of the electric power fitting to obtain a thermal time constant and a steady-state temperature rise value; and calculating the power value consumed by the electric power fitting according to the thermal time constant, the steady-state temperature rise value, the mass and the specific heat capacity. By implementing the method and the device, the thermal time constant and the steady-state temperature rise value can be obtained according to the collected surface temperature of the electric power fitting, and the power value consumed by the electric power fitting can be calculated according to the steady-state temperature rise value, the mass, the specific heat capacity and the thermal time constant of the electric power fitting. In addition, the invention can realize the on-line monitoring of the power consumption of the electric power fitting in the power grid system, and meanwhile, the monitoring method can be used for not only a direct current transmission and distribution line, but also an alternating current transmission and distribution line, thereby expanding the application range of the monitoring method.