Analysis of the Reliability of Measurement Monitoring of the Power Output of Photovoltaic Modules

A method for analyzing measurements of the normalized output characteristics of photovoltaic modules is described along with a system for monitoring their power output. The statistical characteristics of the probability distributions of the normalized parameters and the errors in their estimated values are determined. A mathematical model for the probabilities of type I and type II errors is formulated that depends on the standard uncertainties of the three major normalized photoelectric parameters. The standard uncertainties of the photoelectric parameters are determined for specified levels of reliability monitoring (total risk to the consumer).