The University of Tokyo has developed a technology that allows remote
Author: Source: Datetime: 2016-11-10 18:04:00
A terminal integrated with detection and communication functions is mounted on each solar panel as a terminal box, and data is transmitted via a power supply cable outputted from the panel. You can send the panel voltage and temperature data.
As a result, it is possible to remotely monitor the power failure of each of the panels which can not be visually found. And stressed that not only has a solar panel as a unit of maintenance functions, but also all the panels are placed in IT (information technology) environment
And a pulsed current is transmitted to a series of strings connected in series to the solar panel. Using the pulsed current, you can master the voltage and temperature of each solar panel.
These data can be automatically monitored remotely using the Junction Box and the PV Inverter (PCS) peripheral readout, which is sent to the cloud computing platform via the mobile communications network.
In the photovoltaic power plant, with PCS as a unit to master the method of generating capacity, the greater the capacity of PCS, the number of connected panels more, it is difficult to find the failure of the battery board.
Therefore, in the junction box set on the current sensor, to be measured by the data found that the failure of the string group where the string string monitoring methods are widely used. If a group of more than ten panels per string, according to the relative difference in the amount of electricity generated, found that the failure of the solar panel where the string is relatively easy to write.
Because the relative solar power generator method is based on the string series, it is not easy to find that the difference is particularly large. The ultimate use of infrared cameras and other methods to lock the faulty panel requires some experience.
In addition, there is the use of wire communication (PLC) method, but allegedly difficult to use for solar panels.
In this way, a pulse-like current is sent to a series of strings, and a method of detecting a fault in a solar panel is a technology developed and commercialized on IC (integrated circuit) inspection by System JD (Fukuoka, Fukuoka) , Which has been adopted by Japan's Million Photovoltaic Power Station and O & amp; M (Operation and Maintenance) operators.
System JD method is from the junction box to the string to send pulse-like current, and the University of Tokyo method is the use of each solar panel installed on the terminal to send.
It is said that solar panels installed on the terminal is composed of general-purpose electronic components, if the battery manufacturers to use, the manufacture can easily install.
But also to the panel to send control signals, fire and other emergencies, you can cut off the power of the panel. TAG: Multi-Storage Reliability Shell Manganese 200MW Ørsted Micro ABB Programs Volvo 65MW Porsche Largest Volkswagen Lease
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