Fault diagnosis method and device for distributed photovoltaic power generation system, and electronic equipment

Abstract

The invention discloses a fault diagnosis method and device for a distributed photovoltaic power generation system, and electronic equipment. The method specifically comprises the following steps: constructing a space weight matrix of all power stations in the distributed photovoltaic power generation system, and enabling each element of the space weight matrix to correspond to a weight coefficient of one power station; generating abnormal dates of all power stations are obtained according to the spatial weight matrix; and identifying a fault power station from all the power stations according to the abnormal power generation date. In this way, the fault power station can be identified without on-site inspection, and operation and maintenance personnel can eliminate the fault in time, so that the power generation efficiency of the distributed photovoltaic power generation system is prevented from being affected.

Description

technical field [0001] The present application relates to the field of photovoltaic technology, and more specifically, to a fault diagnosis method and device for a distributed photovoltaic power generation system. Background technique [0002] With the large-scale development and utilization of new energy in the domestic market, the photovoltaic industry has gradually matured. With the deepening implementation of the State Council's energy-saving and emission reduction policies to promote photovoltaic development, it will still maintain a high-speed growth trend. However, due to the small scale of distributed photovoltaic power plants, remote and scattered locations, and complex and diverse distribution terrains, the photovoltaic power plant management system currently on the market lacks intelligent operation and maintenance methods, resulting in many problems during the operation of the power plant. [0003] Distributed photovoltaic power generation system, also known as ...

AI Technical Summary

Problems solved by technology

Long-term shading will also cause hot spots on the components to damage the photovoltaic components

[0006] It is one of the common problems in the operation of distributed photovoltaic power plants to cause a significant drop in power generation efficiency due to the blocking of photovoltaic panels. Foreign objects such as weeds, dust, rain, and snow are blocked by foreign objects, and it is difficult for operation and maintenance personnel to detect them without going to the site; or the panels are covered by buildings. Objects, tree shade, and battery components with unreasonable row spacing are shaded by objects, and the shaded area will change with the angle of the sun. As a result, even if the operation and maintenance personnel are on site, they may not be able to be found in time.

In view of the fact that the distributed photovoltaic power generation system itself has many points and wide areas and it is difficult to detect faults in time, the faults cannot be eliminated in time, which affects its power generation efficiency

Images