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PV (Photovoltaic) power generation system and fault detection method thereof

A photovoltaic power generation system and photovoltaic power generation technology, which are applied in the monitoring of photovoltaic systems, photovoltaic power generation, photovoltaic power plants, etc., can solve the problems of low working efficiency of photovoltaic power generation systems, improve overall working efficiency, reduce impact, and reduce power consumption. Effect

Active Publication Date: 2015-05-06
HUBEI YONGHENG SOLAR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, how to improve the working efficiency of the photovoltaic power generation system to reduce the electricity price cost has become a bottleneck in the promotion and application of photovoltaic power generation systems
This is mainly because the conversion efficiency of monocrystalline silicon solar cells developed by the laboratory does not exceed 25.0%, the conversion efficiency of polycrystalline silicon solar cells does not exceed 20.4%, and the overall efficiency of monocrystalline silicon photovoltaic cell modules does not exceed 21%. Make the work efficiency of the whole photovoltaic power generation system lower

Method used

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  • PV (Photovoltaic) power generation system and fault detection method thereof
  • PV (Photovoltaic) power generation system and fault detection method thereof
  • PV (Photovoltaic) power generation system and fault detection method thereof

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Embodiment 1

[0037] figure 1 A schematic structural diagram of a photovoltaic power generation system according to an embodiment of the present invention is shown. Such as figure 1 As shown, the photovoltaic power generation system includes at least one photovoltaic power station and a central server 1100 capable of communicating with each of the photovoltaic power stations via the Internet, wherein each of the photovoltaic power stations includes:

[0038] A plurality of photovoltaic power generation arrays, each of which includes a plurality of photovoltaic power generation nodes (such as figure 1 PV power generation nodes 100#111~100#11N) and a PV routing node (such as figure 1 The photovoltaic routing node 200#11 in the array), the photovoltaic routing node can wirelessly communicate with each of the photovoltaic power generation nodes in the array, and the photovoltaic routing node can collect the State parameters of photovoltaic power generation nodes. Among them, such as f...

Embodiment 2

[0060] On the basis of the previous embodiment, the photovoltaic power generation system may also include: memory (see Figure 5 The memory 420 in the first gateway 400 of the first gateway 400), the memory 420 stores the physical address and ID number of each photovoltaic power generation node and the physical address and ID number of the photovoltaic routing node in association; see figure 1 In the case where the first gateway determines that a certain photovoltaic power generation node and / or photovoltaic routing node in the photovoltaic power generation array has an operation failure based on the received state parameters of each of the photovoltaic power generation arrays, the central server 1100 based on The ID number of the photovoltaic power generation node and / or the ID number of the photovoltaic routing node obtains the corresponding physical address from the memory, and sends a message indicating that the photovoltaic power generation node and / or photovoltaic routin...

Embodiment 3

[0085] Figure 10 It is a schematic flowchart of a fault detection method for a photovoltaic power generation system according to an embodiment of the present invention, and the fault detection method can be applied to a photovoltaic power generation system with any structure in the above embodiments. Such as Figure 10 As shown, the method may specifically include the following steps:

[0086] Step S1010, the first gateway determines the operating status of each of the photovoltaic power generation arrays based on the received state parameters of the photovoltaic power generation arrays, so as to determine whether a certain photovoltaic power generation node and / or photovoltaic routing node in the photovoltaic power generation array is in operation failure; and

[0087] Step S1020, when the first gateway determines that a certain photovoltaic power generation node and / or photovoltaic routing node in the photovoltaic power generation array has an operation failure, the centr...

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Abstract

The invention discloses a PV (Photovoltaic) power generation system and a fault detection method thereof. The photovoltaic power generation system comprises at least one PV power generation and a central server which is communicated with the PV power generation through an internet. Each PV power generation comprises a plurality of PV power generation arrays, a first coordinator and a first gateway, and each PV power generation array comprises a plurality of PV power generation nodes and PV routing nodes wirelessly communicated with the PV power generation nodes; the first gateway is connected with the first coordinator and is used for determining the operating statuses of all PV power generation arrays according to statuses parameters received from the first coordinator, and transmitting the received status parameters and the determined operating statuses to the central server. According to the PV power generation system and the fault detection method thereof provided by the invention, abnormal modules can be discovered at the first time, the influence on the integral system caused by the abnormal components can be reduced, and the safety and service life of the system can be improved.

Description

technical field [0001] The invention relates to the field of photovoltaic power generation, in particular to a photovoltaic power generation system and a fault detection method thereof. Background technique [0002] As a renewable and clean energy, solar energy can be converted into electrical energy through photovoltaic cell modules, stored and utilized, so it is considered to be one of the most promising new energy sources at present. [0003] Existing photovoltaic power generation systems are mainly divided into three types: independent photovoltaic power generation systems, grid-connected photovoltaic power generation systems, and distributed photovoltaic power generation systems. Among them, the independent photovoltaic power generation system is also called off-grid photovoltaic power generation system, which is mainly composed of photovoltaic cell module array, controller and battery. If it is to supply power for AC loads, it also needs to be equipped with an AC inver...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02S10/00H02S50/00H02J13/00
CPCH02J13/0086H02S50/00H02J13/00001Y04S40/126Y02E10/50Y02E60/00Y04S40/128
Inventor 黄勇易金桥孙先波谭建军胡涛丁尚云
Owner HUBEI YONGHENG SOLAR
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