Computer-implemented method, computer-implemented tool and power plant control device for energy balancing solar power plants and a solar power plant system

The computer-implemented tool (CIT), for energy balancing solar power plants, wherein for an energy accounting time period (EATP) of a solar power plant (SPP, INV, PVS, MDV), in which over a recording time “[t0 to tn]” with n∈0 corresponding to the energy accounting time period (EATP), <i> regarding an irradiation (I), being based on a measured plane-of-array irradiation, by measuring an irradiation measurement signal “I(t)” (IMS), a set of irradiation measurement values “I(t0)” to “I(tn)” (SIMV) and <ii> regarding a generated power (P), being based on a measured power of the complete solar power plant (SPP, INV, PVS, MDV) or at least one part of the solar power plant (INV, PVS, MDV) including an inverter, a “Photo-Voltaic <PV>”-string or a measurement device, by measuring a power production measurement signal “P(t)” (PPMS) a set of power production measurement values “P(t0)” to “P(tn)” (SPPMV) are collected (clt), wherein:

• a non-transitory, processor-readable storage medium (STM) having processor-readable program-instructions of a program module (PGM) to energy balance solar power plants stored in the non-transitory, processor-readable storage medium (STM) and a processor (PRC) connected with the storage medium (STM) executing the processor-readable program-instructions of the program module (PGM) to energy balance solar power plants, wherein the program module (PGM) and the processor (PRC) form an energy balancing engine (EBE) to:
• a) match (mtc) for the recording time “[t0 to tn]” the power production measurement signal “P(t)” (PPMS) to the irradiation measurement signal “I(t)” (IMS) by using a curve matching algorithm (CMA) to identify (idf) based on the set of power production measurement values “P(t0)” to “P(tn)” (SPPMV) and the set of irradiation measurement values “I(t0)” to “I(tn)” (SIMV) being collected (clt) at least one good matching time (GMT), in which the power production measurement signal “P(t)” (PPMS) and the irradiation measurement signal “I(t)” (IMS) match optimally through a minimum signal distance (MSD),
• b) run (rn) a fitting algorithm (FA) for the at least one good matching time (GMT) and based <i> regarding a “good matching time”-related part of the power production measurement signal “PGMT(t)” (PPMSGMT) on a subset of the set of power production measurement values “Pt(t0)” to “Pi(tn)” (SPPMVSS) and <ii> regarding a “good matching time”-related part of the irradiation measurement signal “IGMT(t)” (IMSGMT) on a subset of the set of irradiation measurement values “I(t0)” to “I(tn)” (SIMVSS) to generate (grt) according to an estimated power production measurement signal “Pest(t, K)” (PPMSest) defined as a function “f(I(t),K)” with “Pest(t, K)=f(I(t), K=[k0, k1, . . . ]) a parameter set “K” (PMS) with at least one parameter “[k0, k1, . . . ]” (PM), in which when running (rn) the fitting algorithm (FA) a deviation between the power production measurement signal “P(t)” (PPMS) and the estimated power production measurement signal “Pest(t, K)” (PPMSest) is minimized by tuning or changing the parameter set “K” (PMS),
• c) calculate (clc) for the recording time “[t0 to tn] based on <1> the set of power production measurement values “P(t0)” to “P(tn)” (SPPMV), <2> the set of irradiation measurement values “I(t0)” to “I(tn)” (SIMV) and <3> the generated parameter set “K” (PMS) with the at least one parameter “[k0, k1, . . . ]” (PM) the estimated power production measurement signal “Pest(t, K)” (PPMSest) in order to determine (dtm) a value for an energy loss (Eloss) by an integral calculation (ITC) of a power difference (PD)
• ∫[Pest(t, K)−P(t)]dt.