Remote monitoring system and method for solar photovoltaic modules

Abstract

The invention provides a remote monitoring system of a solar photovoltaic module. The remote monitoring system comprises photovoltaic modules, an intelligent junction box gateway and a monitoring center platform connected in sequence; the photovoltaic modules and intelligent junction boxes are connected in a one-to-one correspondence manner; the intelligent junction boxes can collect the working parameters of the corresponding photovoltaic modules and make comparison between the collected working parameters and preset threshold values so as to perform fault judgment on the photovoltaic modules; and the intelligent junction boxes also can perform automatic bypass control when the faults are judged and can perform automatic recovery processing after the faults are removed. The invention alsoprovides a remote monitoring method of the solar photovoltaic module; the remote monitoring method comprises local control and remote control, wherein the local control refers to that the intelligentjunction boxes perform automatic bypass control and recovery processing according to the collected working parameters; and the remote control refers to that the monitoring center platform obtains theworking conditions of the photovoltaic modules through the Internet for automatically / manually controlling the working states of the photovoltaic modules remotely according to the working parametersand the working conditions.

Description

technical field [0001] The invention relates to the field of solar photovoltaic component monitoring, in particular to a remote monitoring system and method for solar photovoltaic components. Background technique [0002] Due to the transition and vigorous development of the social economy, the energy problem is very serious, and the extensive use of petrochemical energy has led to continuous deterioration of environmental pollution. Therefore, the development of new energy has become a key direction for energy development. Among them, solar photovoltaic power generation has become the main force of green energy. [0003] The main methods and disadvantages of traditional solar photovoltaic module monitoring: [0004] 1. In the past, multiple solar photovoltaic modules were connected in series to form a string, and multiple strings were connected in parallel to form a sub-array. The power generated by each sub-array was output to the grid by the inverter. Due to the series ...

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Problems solved by technology

Due to the series connection between photovoltaic modules, if a single module board is damaged, the entire string circuit will be disconnected, and the power of the normally operating photovoltaic modules cannot be transmitted to the inverter, which greatly reduces the power generation efficiency

[0005] 2. In the past, if individual photovoltaic modules were damaged, it was mainly judged that the photovoltaic modules needed to be repaired based on the obvious decrease in the previous power generation data or the obvious damage to the photovoltaic modules in manual area inspections; because of solar power plants, most of them have an area of ​​tens of acres Even in an open area of ​​hundreds of acres, the area is large and the investigation is difficult. It is often impossible to accurately determine whether the photovoltaic module is damaged, the location of the damaged photovoltaic module cannot be determined, and the operation and maintenance cost is high and the efficiency is low.

[0013] This patent can only monitor the status of photovoltaic modules, and cannot remotely deal with damaged photovoltaic modules, and requires staff to go to the site to deal with it. It cannot solve the problem of reduced power generation efficiency caused by damage to a single photovoltaic module, and the function is relatively single

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