Fire disaster area determination method and system based on power generation characteristics of photovoltaic module

The invention discloses a fire area determination method and system based on power generation characteristics of a photovoltaic module, and belongs to the technical field of new energy. Comprising the following steps: S1, acquiring basic parameters: voltage calculation model fitting coefficients mnm1, mnm2, mnm3 and mnm4 of each component unit, a heat release rate hnmr of each component unit in unit time, an area Anm of each component unit, a heat conduction coefficient tnmc of each component unit, current calculation model fitting coefficients nnm1, nnm2, nnm3 and nnm4 of each component unit, and voltage Unm and load current I nm of each component unit; s2, screening parameters of an abnormal component unit from the basic parameters, wherein the abnormal component unit is a component unit whose current and/or voltage change abnormally; s3, calculating the distance from each abnormal component unit to the center of the flame by using the following formula; and S4, determining a fire area according to the xnmu