Photovoltaic power station fault comprehensive early warning system
A photovoltaic power station and early warning system technology, which is applied in the monitoring of photovoltaic systems, photovoltaic power generation, photovoltaic modules, etc., to ensure safe operation, reduce economic losses, and improve operation and maintenance efficiency.
Active Publication Date: 2020-04-14
ZHEJIANG UNIV
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In addition, in the document "Research on Fault Diagnosis and Health Monitoring Technology of Photovoltaic Power Generation System", the health degree of photovoltaic power station is to describe the ability of the whole system to maintain safe and reliable work. Analytical methods are used to calculate the health of photovoltaic power plants, and the index assignments of these methods are highly subjective
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[0046] A specific example is given below. In this example, the embodiment of the present invention obtains operating data through a photovoltaic system simulation platform, and simulates a photovoltaic power station under the condition of 20% shading. In this embodiment, the data of the normal working state of the power station is selected as the expected standard value. In this embodiment, the threshold value of the photovoltaic power station is selected as 60, and a fault warning analysis is performed on the photovoltaic power station.
[0047] The indicators set by the photovoltaic power station indicator setting module in this embodiment include the average power generated by the array with the inverter as the unit, the total grid-connected power, the grid-connected voltage and the grid-connected frequency. see figure 2 , there are two arrays with inverter as the unit, denoted by array a and array b respectively. Through simulation, it is obtained that the output powers ...
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The invention discloses a photovoltaic power station fault comprehensive early warning system, which takes a photovoltaic power station as an object and performs fault early warning on the photovoltaic power station. Firstly, field equipment and environmental parameters of a photovoltaic power station are collected, and the health degree of the photovoltaic power station is measured and calculatedthrough a monitoring module and a data transmission and processing module. The fault rate of each component is obtained according to a historical fault information module and a fault detection sequence determining module, the fault detection sequence is determined according to the component fault rate, and finally fault early warning is achieved. According to the invention, triggering of the fault early warning system can be considered in multiple aspects, and fault early warning can be performed when the comprehensive health degree of the photovoltaic power station is lower than a critical value and the data of a single component is abnormal, so that safe operation of the photovoltaic power generation system is ensured, and economic loss of the photovoltaic power station is reduced.
Description
technical field [0001] The invention relates to the field of photovoltaic power station detection, in particular to a comprehensive early warning system for photovoltaic power station failures. Background technique [0002] With the continuous development of the photovoltaic industry, accurately judging the operating performance and status of photovoltaic power plants has become a key factor to ensure the safe operation of photovoltaic power plants and even power systems. At present, in the aspect of photovoltaic power plant operation evaluation, the operation evaluation index is mainly the performance ratio of photovoltaic system. The performance ratio of photovoltaic system is the actual power generation of the power station / the expected power generation of the power station. Its size represents the performance of the photovoltaic power generation system. This indicator mainly evaluates the overall efficiency of photovoltaic power plants, including hourly efficiency, daily...
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Login to View More IPC IPC(8): H02S50/00G06Q10/06G06Q50/06
CPCH02S50/00G06Q10/06393G06Q50/06Y02E10/50Y04S10/50Y02E40/70
Inventor 颜文俊方晓伦朱锋邹绍琨冯梦丹
Owner ZHEJIANG UNIV