Method and device for detecting reverse connection of feed-point detection device

摘要

#$%^&*AU2017202814A120180405.pdf#####ABSTRACT A method and a device for detecting reverse connection of a feed-point detection device are provided. The method includes: acquiring a feed-point power measured by a feed-point detection device to be detected; acquiring an output power of a photovoltaic inverter; 5 calculating a difference between the feed-point power and the output power of the photovoltaic inverter; determining whether a first preset condition is met, where the first preset condition includes at least the difference being greater than a set threshold; and generating and outputting a signal indicating the feed-point detection device to be detected is connected reversely, thereby detecting a reverse connection fault of the feed-point detection 0 device automatically. - 13 -CStart Acquire a feed-point power S101 measured by a feed-point detection device to be detected Acquire an output power of a S102 photovoltaic inverter Deterene S1021 Yes whether the outpt power of the photovoltaic inverter is zero No Calculate a difference between the .- S103 feed-point power and the output power of the photovoltaic inverter No Der ' 10 No NoS1022 .N10 Determine Determme whether a second preset whether a first preset condition is met condition is met Yes Generate and output a signal indicating that the feed-point S105 detection device to be detected is connected reversely Figure 3 - 3/4 -