According to one or more embodiments, an intelligent solar racking system is provided. The intelligent solar racking system includes a racking frame that receives and mechanically supports solar modules. The intelligent solar racking system includes sensors distributed throughout the racking frame. Each of the sensors detects and reports parameter data by generating output signals. The sensors include module sensors positioned to associate with each of the solar modules and detect a module presence as the parameter data for the solar modules. The intelligent solar racking system includes a computing device that receives, stores, and analyzes the output signals to determine and monitor operations of the intelligent solar racking system.

According to one or more embodiments, an intelligent solar racking system is provided. The intelligent solar racking system includes a racking frame that receives and mechanically supports solar modules. The intelligent solar racking system includes sensors distributed throughout the racking frame. Each of the sensors detects and reports parameter data by generating output signals. The sensors include module sensors positioned to associate with each of the solar modules and detect a module presence as the parameter data for the solar modules. The intelligent solar racking system includes a computing device that receives, stores, and analyzes the output signals to determine and monitor operations of the intelligent solar racking system.

A photovoltaic system includes an inverter and a plurality of photovoltaic units connected to the inverter. Each photovoltaic unit includes a controller and one or more photovoltaic modules connected to the controller. The controller in each photovoltaic unit is further configured to obtain a power carrier signal sent by a controller in another photovoltaic unit of the plurality of photovoltaic units, determine an attenuation reference factor of the power carrier signal based on the obtained power carrier signal, and send the attenuation reference factor to the inverter. The inverter is further configured to group the plurality of photovoltaic units based on the attenuation degree of the power carrier signal obtained by each photovoltaic unit. This application can implement automatic grouping of photovoltaic units.

A photovoltaic system includes an inverter and a plurality of photovoltaic units connected to the inverter. Each photovoltaic unit includes a controller and one or more photovoltaic modules connected to the controller. The controller in each photovoltaic unit is further configured to obtain a power carrier signal sent by a controller in another photovoltaic unit of the plurality of photovoltaic units, determine an attenuation reference factor of the power carrier signal based on the obtained power carrier signal, and send the attenuation reference factor to the inverter. The inverter is further configured to group the plurality of photovoltaic units based on the attenuation degree of the power carrier signal obtained by each photovoltaic unit. This application can implement automatic grouping of photovoltaic units.

Disclosed is an energy storage system having an arc monitoring function. The system includes: an outer casing storing an energy storage unit and a PCS therein; a sound sensor installed outside the outer casing to detect sound generated from an inside of the outer casing; a temperature and humidity sensor installed outside the outer casing to detect humidity and temperature of the outer casing; and an arc detection device analyzing a frequency of a sound generated in the energy storage unit and the PCS based on correlation between temperature and humidity to detect an arc signal included in the sound and monitoring an arc based on the detected arc signal.

Disclosed is an energy storage system having an arc monitoring function. The system includes: an outer casing storing an energy storage unit and a PCS therein; a sound sensor installed outside the outer casing to detect sound generated from an inside of the outer casing; a temperature and humidity sensor installed outside the outer casing to detect humidity and temperature of the outer casing; and an arc detection device analyzing a frequency of a sound generated in the energy storage unit and the PCS based on correlation between temperature and humidity to detect an arc signal included in the sound and monitoring an arc based on the detected arc signal.

A remote monitoring device and a remote monitoring method thereof are provided. An energy harvesting device converts energy harvested from the surrounding environment into electrical energy for storage. An image capturing device captures an image of a monitored object to generate a captured image. When the power stored in the energy harvesting device meets a preset condition, a control circuit outputs monitoring information based on the captured image.

A remote monitoring device and a remote monitoring method thereof are provided. An energy harvesting device converts energy harvested from the surrounding environment into electrical energy for storage. An image capturing device captures an image of a monitored object to generate a captured image. When the power stored in the energy harvesting device meets a preset condition, a control circuit outputs monitoring information based on the captured image.

A current sensor of a detection target current using a shunt resistor includes: a resistance value correction circuit having: a correction resistor; a signal application unit that applies an alternating current signal to a series circuit of the shunt resistor and the correction resistor; a first voltage detection unit that detects the terminal voltage of the shunt resistor; a second voltage detection unit that detects a terminal voltage of the correction resistor; and a correction unit that calculates the resistance value of the shunt resistor based on a first voltage detection value by the first voltage detection unit and a second voltage detection value by the second voltage detection unit, and corrects the resistance value for current detection based on a calculated resistance value of the shunt resistor.

The application provides a photovoltaic inverter system, an automatic locating method of RSDs and a fault control method thereof. The automatic locating method comprises turning off all RSDs and sampling a voltage of an output end of each RSD as a first voltage before an inverter operates; turning on any one of the RSDs and sampling a voltage of the output end of each RSD as a second voltage, determining all RSDs in a photovoltaic module string to which the RSD in a turned-on state belongs according to the first voltage and the second voltage, and repeating the above control method for any one of the RSDs outside the photovoltaic module string to which the determined RSDs belong until corresponding connection relations between all RSDs and all photovoltaic module strings are determined.