Wireless intelligent monitoring system and method for photovoltaic power station

Abstract

The invention discloses a wireless intelligent monitoring system and method for a photovoltaic power station. The wireless intelligent monitoring system for the photovoltaic power station comprises a server layer, a gateway layer, a repeater layer and a monitoring module layer, wherein the server layer is the top layer; the monitoring module layer is the bottom layer; bidirectional communication is performed between each two adjacent layers; the server layer consists of multiple servers; the gateway layer consists of multiple gateways; the repeater layer consists of multiple repeater modules; the wireless intelligent monitoring system is characterized in that the monitoring module layer consists of a1-am grouping sequences, wherein m is less than or equal to 65536; each grouping sequence is divided into b1-bm groups, wherein n is a natural number less than or equal to 255; each group consists of i intelligent monitoring modules, wherein i is a natural number less than or equal to 183; each repeater performs wireless communication with all the intelligent monitoring modules in each grouping sequence; the repeaters and the gateways are in wireless communication; and the intelligent monitoring modules are used for detecting information of photovoltaic modules, and perform wireless communication with the repeaters. According to the wireless intelligent monitoring system and method for the photovoltaic power station, the electric energy utilization rate of the photovoltaic power station can be improved, and the wireless intelligent monitoring system and method are wide in application prospects.

Description

technical field [0001] The invention relates to an intelligent monitoring system and method, in particular to a wireless intelligent monitoring system and method for a photovoltaic power station. Background technique [0002] Since solar photovoltaic power generation has the characteristics of no noise, no pollution, no geographical restrictions, wide distribution and inexhaustible supply, solar photovoltaic power generation is a renewable energy generation technology with sustainable development. It is predicted that solar photovoltaic power generation will occupy an important seat in the world's energy consumption in the 21st century, not only to replace some conventional energy sources, but also to become the main body of the world's energy supply. However, solar photovoltaic power plants cover a large area and have a large number of photovoltaic modules. Traditional photovoltaic module junction boxes do not have alarm and detection functions. The current monitoring syste...

AI Technical Summary

Problems solved by technology

This technical solution has ①serious heating: Schottky diodes when bypassing the switch, when the photovoltaic module is shaded and the Schottky diodes are in the bypass state, the temperature of the junction box reaches above 150°C; ②Low safety: Schottky diodes The reverse withstand voltage of the diode is easy to change with the temperature. At high temperature, the reverse withstand voltage is only 20 to 30 volts, and it is very easy to be reversely broken down. In addition, it does not have relevant functions, and it is difficult to maintain high voltage when a fire or other accident occurs.

③Large loss: the reverse leakage current of the Schottky diode is as high as 10 milliamps at high temperature, and the power loss is large

④Low communication reliability: Data information transmission needs to rely on power lines. When the power lines fail, the data of the entire photovoltaic string will be lost, and the communication effect is easily affected by the load of the wires.

⑤ High cost: each string needs a data receiver, and a communication line needs to be specially laid between the data receiver and the server

⑥The code rate is low, and the code rate of power line carrier communication is generally only a few Kbps

This technical solution has defects such as high cost, large number of data collectors, large volume, external monitoring module, high power consumption, and complex protocol.

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