Fault identification and positioning method and system of intelligent photovoltaic power generation system

A photovoltaic power generation system and photovoltaic power generation technology, which is applied in the monitoring of photovoltaic systems, photovoltaic power generation, photovoltaic modules, etc., can solve the problems of manpower, material resources, financial resources, difficulties in user monitoring and maintenance, and blind maintenance of alarm power stations. cost, reduce the probability of fault false alarm, improve the accuracy and the effect of

Active Publication Date: 2015-10-28
HOHAI UNIV CHANGZHOU
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  • Application Information

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Problems solved by technology

Driven by national policies, my country's photovoltaic power generation technology has developed rapidly. However, during the operation of photovoltaic power stations, the phenomenon of false alarms of power stations is serious, which leads users to blindly repair the alarm power stations, whi...

Method used

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  • Fault identification and positioning method and system of intelligent photovoltaic power generation system
  • Fault identification and positioning method and system of intelligent photovoltaic power generation system
  • Fault identification and positioning method and system of intelligent photovoltaic power generation system

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Embodiment 1

[0028] figure 1 It is a flowchart of fault identification and location of the photovoltaic power generation system of the present invention.

[0029] figure 1 The fault judgment basis is referred to as criterion for short.

[0030] like figure 1 As shown, a method for fault identification and location of a photovoltaic power generation system of the present invention includes the following steps:

[0031] Step S1, obtaining the correlation coefficient of a photovoltaic power generation unit relative to other photovoltaic power generation units;

[0032] Step S2, establishing the basis for judging the failure of the photovoltaic power generation unit;

[0033] Step S3, performing fault identification and location on the faulty photovoltaic power generation unit.

[0034] Wherein, the photovoltaic power generation system includes several photovoltaic power generation units.

[0035] figure 2 It is an example diagram of correlation analysis and criterion for fault locatio...

Embodiment 2

[0054] image 3 It is a functional block diagram of the photovoltaic power generation system fault identification and location software of the present invention.

[0055] like image 3 As shown, on the basis of Embodiment 1, the present invention also provides a fault identification and location system for a photovoltaic power generation system, including:

[0056] The correlation coefficient calculation module obtains the correlation coefficient of a photovoltaic power generation unit relative to the remaining photovoltaic power generation units; and an abnormal phenomenon classification module connected with the correlation coefficient calculation module, the abnormal phenomenon classification module is suitable for establishing the fault judgment basis of the photovoltaic power generation unit , and fault identification and location of faulty photovoltaic power generation units.

[0057] For the establishment of the fault judgment basis, refer to the related content of Em...

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Abstract

The invention relates to a fault identification and positioning method and system of an intelligent photovoltaic power generation system. The fault identification and positioning method comprises the following steps: S1, obtaining an association coefficient of a photovoltaic power generation unit relative to other photovoltaic power generation units; S2, establishing a fault determination basis of the photovoltaic power generation unit; and S3, carrying out fault identification and positioning on a faulted photovoltaic power generation unit. According to the invention, on the basis of discrimination of distances among all units and real-time combined generation efficiencies of all the units of the photovoltaic power generation system, data analyses are carried out to realize accurate identification and positioning of faults of the intelligent photovoltaic power generation system, thereby substantially reducing the false fault alarm probability and improving fault identification accuracy and fault positioning precision of the intelligent photovoltaic power generation system. Meanwhile, no extra professional fault diagnosis device is needed for the photovoltaic power station and thus costs are lowered. The method and system have broad application prospects.

Description

technical field [0001] The invention belongs to the field of photovoltaic intelligent monitoring, and in particular relates to a fault identification and positioning method for an intelligent photovoltaic power generation system. Background technique [0002] At present, photovoltaic power generation, as the highest quality and most convenient clean energy, has been valued by countries all over the world. Driven by national policies, my country's photovoltaic power generation technology has developed rapidly. However, during the operation of photovoltaic power stations, the phenomenon of false alarms of power stations is serious, which leads users to blindly repair the alarm power stations, which consumes a lot of manpower, material resources and financial resources. Monitoring and maintenance pose greater difficulties. The traditional method is to use the comprehensive efficiency method of photovoltaic power generation system to locate and identify faults, which is effectiv...

Claims

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Application Information

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IPC IPC(8): H02S50/00
CPCH02S50/00Y02E10/50
Inventor 沈金荣惠杰倪莹孙贤贤王孟达吴昊戚鹏
Owner HOHAI UNIV CHANGZHOU
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