CN219577009U - A photovoltaic string fault testing device - Google Patents
A photovoltaic string fault testing device Download PDFInfo
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- CN219577009U CN219577009U CN202320791430.4U CN202320791430U CN219577009U CN 219577009 U CN219577009 U CN 219577009U CN 202320791430 U CN202320791430 U CN 202320791430U CN 219577009 U CN219577009 U CN 219577009U
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- 230000009286 beneficial effect Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E10/50—Photovoltaic [PV] energy
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Abstract
Description
技术领域technical field
本实用新型涉及光伏组串检测技术领域，具体而言，涉及一种光伏组串故障测试装置。The utility model relates to the technical field of photovoltaic string detection, in particular to a photovoltaic string fault testing device.
背景技术Background technique
光伏组件是在光伏发电系统中，将若干个光伏组件串联后，形成的具有一定直流电输出的电路单元。就目前而言，光伏组串的故障检测主要依赖于逆变器进行，在检测中需要频繁插拔光伏组串，不仅耗时费力工作效率低，而且逆变器在频繁启停中，容易造成电量损失。基于此，我们设计了一种光伏组串故障测试装置，用以克服上述技术问题。A photovoltaic module is a circuit unit with a certain DC output formed by connecting several photovoltaic modules in series in a photovoltaic power generation system. For now, the fault detection of photovoltaic strings mainly depends on the inverter. During the detection, the photovoltaic strings need to be plugged and unplugged frequently. Power loss. Based on this, we designed a photovoltaic string fault testing device to overcome the above technical problems.
实用新型内容Utility model content
本实用新型的目的在于提供一种光伏组串故障测试装置，其通过设置无需外接电源的故障测试装置，不仅体积小重量轻，便于携带至光伏场区进行光伏组串的故障测试，而且解决了光伏组串故障检测中需要反复插拔光伏组串，导致工作效率低等不便的技术问题。The purpose of this utility model is to provide a photovoltaic string fault test device, which is not only small in size and light in weight by setting a fault test device without an external power supply, it is easy to carry to the photovoltaic field for fault testing of photovoltaic strings, and solves the problem of In the photovoltaic string fault detection, it is necessary to repeatedly plug and unplug the photovoltaic string, resulting in low working efficiency and other inconvenient technical problems.
本实用新型的实施例通过以下技术方案实现：Embodiments of the utility model are realized through the following technical solutions:
一种光伏组串故障测试装置，由光伏组串与故障测试装置所组成，其中，所述故障测试装置包括：MC4插头、第一开关、绝缘检测模块、电压表、LED灯、第一电阻、电流表、第二电阻、第三电阻、第四电阻、第二开关、第三开关；所述MC4插头接入所述光伏组串的正负极，所述光伏组串的正极通过所述MC4插头与所述第一开关的一端连接，所述第一开关的另一端分别与所述绝缘检测模块的端口一、电压表的一端、第一电阻的一端连接，所述第一电阻的另一端与所述电流表的一端连接，所述电流表的另一端分别与所述第二电阻的一端、第三电阻的一端、第四电阻的一端连接，所述第二电阻的另一端、第三电阻的另一端、第四电阻的另一端分别与所述第二开关的一端连接，所述第二开关的另一端分别与所述电压表的另一端、绝缘检测模块的端口二、第三开关的一端连接，所述绝缘检测模块的端口三接地，所述第三开关的另一端通过MC4插头与所述光伏组串的负极连接。A photovoltaic string fault testing device, which is composed of a photovoltaic string and a fault testing device, wherein the fault testing device includes: MC4 plug, a first switch, an insulation detection module, a voltmeter, an LED lamp, a first resistor, Ammeter, second resistor, third resistor, fourth resistor, second switch, third switch; the MC4 plug is connected to the positive and negative poles of the photovoltaic string, and the positive pole of the photovoltaic string passes through the MC4 plug connected to one end of the first switch, the other end of the first switch is respectively connected to port one of the insulation detection module, one end of the voltmeter, and one end of the first resistor, and the other end of the first resistor is connected to One end of the ammeter is connected, the other end of the ammeter is respectively connected to one end of the second resistor, one end of the third resistor, and one end of the fourth resistor, the other end of the second resistor, the other end of the third resistor One end and the other end of the fourth resistor are respectively connected to one end of the second switch, and the other end of the second switch is respectively connected to the other end of the voltmeter, port 2 of the insulation detection module, and one end of the third switch , port three of the insulation detection module is grounded, and the other end of the third switch is connected to the negative electrode of the photovoltaic string through the MC4 plug.
可选的，还包括熔断器，所述第一开关的另一端与所述熔断器的一端连接，所述熔断器的另一端分别与所述绝缘检测模块的端口一、电压表的一端、第一电阻的一端连接。Optionally, a fuse is also included, the other end of the first switch is connected to one end of the fuse, and the other end of the fuse is connected to port one of the insulation detection module, one end of the voltmeter, and the second end of the fuse respectively. Connect one end of a resistor.
可选的，还包括辅助装置，所述辅助装置包括：LED灯、风扇；所述熔断器的另一端分别与所述绝缘检测模块的端口一、电压表的一端、第一电阻的一端、LED灯的一端、风扇的一端连接，所述第一电阻的另一端、LED灯的另一端、风扇的另一端分别与所述电流表的一端连接。Optionally, an auxiliary device is also included, and the auxiliary device includes: an LED lamp, a fan; the other end of the fuse is respectively connected to port one of the insulation detection module, one end of the voltmeter, one end of the first resistor, and the LED One end of the lamp is connected to one end of the fan, and the other end of the first resistor, the other end of the LED lamp, and the other end of the fan are respectively connected to one end of the ammeter.
可选的，所述第二开关具体为旋钮式切换开关。Optionally, the second switch is specifically a rotary switch.
可选的，所述故障测试装置内的各个组件均为直流设备。Optionally, each component in the fault testing device is a DC device.
可选的，还包括机箱，所述故障测试装置内的各个组件均固定设置在所述机箱内。Optionally, a chassis is also included, and each component in the fault testing device is fixedly arranged in the chassis.
本实用新型实施例的技术方案至少具有如下优点和有益效果：The technical solution of the utility model embodiment has at least the following advantages and beneficial effects:
本实用新型通过设置无需外接电源的故障测试装置，不仅体积小重量轻，便于携带至光伏场区进行光伏组串的故障测试，而且解决了光伏组串故障检测中需要反复插拔光伏组串，导致工作效率低等不便的技术问题。The utility model is equipped with a fault testing device without an external power supply, which is not only small in size and light in weight, and is easy to carry to the photovoltaic field area for fault testing of photovoltaic strings, but also solves the need for repeated insertion and removal of photovoltaic strings in fault detection of photovoltaic strings. Technical problems that cause inconvenience such as low work efficiency.
附图说明Description of drawings
图1为本实用新型提供的一种光伏组串故障测试装置的电路原理示意图。Fig. 1 is a schematic circuit schematic diagram of a photovoltaic string fault testing device provided by the present invention.
具体实施方式Detailed ways
为使本实用新型实施例的目的、技术方案和优点更加清楚，下面将结合本实用新型实施例中的附图，对本实用新型实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本实用新型一部分实施例，而不是全部的实施例。通常在此处附图中描述和示出的本实用新型实施例的组件可以以各种不同的配置来布置和设计。In order to make the purpose, technical solutions and advantages of the embodiments of the utility model more clear, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the utility model. Obviously, the described The embodiments are some embodiments of the present utility model, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.
如图1所示，一种光伏组串故障测试装置，由光伏组串与故障测试装置所组成，其中，所述故障测试装置包括：MC4插头、第一开关、绝缘检测模块、电压表、LED灯、第一电阻、电流表、第二电阻、第三电阻、第四电阻、第二开关、第三开关；所述MC4插头接入所述光伏组串的正负极，所述光伏组串的正极通过所述MC4插头与所述第一开关的一端连接，所述第一开关的另一端分别与所述绝缘检测模块的端口一、电压表的一端、第一电阻的一端连接，所述第一电阻的另一端与所述电流表的一端连接，所述电流表的另一端分别与所述第二电阻的一端、第三电阻的一端、第四电阻的一端连接，所述第二电阻的另一端、第三电阻的另一端、第四电阻的另一端分别与所述第二开关的一端连接，所述第二开关的另一端分别与所述电压表的另一端、绝缘检测模块的端口二、第三开关的一端连接，所述绝缘检测模块的端口三接地，所述第三开关的另一端通过MC4插头与所述光伏组串的负极连接。As shown in Figure 1, a photovoltaic string fault test device is composed of a photovoltaic string and a fault test device, wherein the fault test device includes: MC4 plug, first switch, insulation detection module, voltmeter, LED Lamp, first resistor, ammeter, second resistor, third resistor, fourth resistor, second switch, third switch; the MC4 plug is connected to the positive and negative poles of the photovoltaic string, and the photovoltaic string The positive pole is connected to one end of the first switch through the MC4 plug, and the other end of the first switch is respectively connected to port one of the insulation detection module, one end of the voltmeter, and one end of the first resistor. The other end of a resistor is connected to one end of the ammeter, the other end of the ammeter is respectively connected to one end of the second resistor, one end of the third resistor, and one end of the fourth resistor, and the other end of the second resistor , the other end of the third resistor and the other end of the fourth resistor are respectively connected to one end of the second switch, and the other end of the second switch is respectively connected to the other end of the voltmeter, port 2, and port 2 of the insulation detection module. One end of the third switch is connected, the port three of the insulation detection module is grounded, and the other end of the third switch is connected to the negative electrode of the photovoltaic string through the MC4 plug.
在本实施例中，光伏组串为电源端，将MC4插头接入光伏组串正负极，接地线接地，合上空气开关(在本实施例中第一开关与第三开关均为直流空气开关)后可形成完整电气回路。具体的，光伏组串为电源，电阻为负载，同时电压表、电流表、绝缘检测模块(绝缘检测模块在本实施例中具体为直流充电桩绝缘监测仪，具体型号以GYDCG-UBCMV3.0作为示例)显示其运行参数，风扇进行散热的同时也可作为运行的指示，LED灯作为运行指示的同时可提供夜间照明，熔断器和空气开关为故障测试装置提供过电流和漏电保护，第二开关可以切换接入回路的电阻阻值，以适应不同的光照条件和不同配置的光伏组串，使光伏组串的工作在较佳的电压条件下运行。In this embodiment, the photovoltaic string is the power supply end, connect the MC4 plug to the positive and negative poles of the photovoltaic string, ground the ground wire, and close the air switch (in this embodiment, the first switch and the third switch are DC air Switch) can form a complete electrical circuit. Specifically, the photovoltaic string is the power supply, and the resistance is the load. At the same time, the voltmeter, ammeter, and insulation detection module (the insulation detection module is specifically a DC charging pile insulation monitor in this embodiment, and the specific model is GYDCG-UBCMV3.0 as an example ) to display its operating parameters, the fan can also be used as an indication of operation while cooling, the LED light can be used as an indication of operation and can provide night lighting, fuses and air switches provide overcurrent and leakage protection for fault test devices, and the second switch can Switch the resistance value of the access circuit to adapt to different lighting conditions and different configurations of photovoltaic strings, so that the photovoltaic strings can work under better voltage conditions.
更为具体的，还包括熔断器，所述第一开关的另一端与所述熔断器的一端连接，所述熔断器的另一端分别与所述绝缘检测模块的端口一、电压表的一端、第一电阻的一端连接。More specifically, it also includes a fuse, the other end of the first switch is connected to one end of the fuse, and the other end of the fuse is respectively connected to port one of the insulation detection module, one end of the voltmeter, One end of the first resistor is connected.
具体的，所述第二开关具体为旋钮式切换开关。Specifically, the second switch is a rotary switch.
具体的，所述故障测试装置内的各个组件均为直流设备。Specifically, each component in the fault testing device is a DC device.
在本实施例中，还包括辅助装置，所述辅助装置包括：LED灯、风扇；所述熔断器的另一端分别与所述绝缘检测模块的端口一、电压表的一端、第一电阻的一端、LED灯的一端、风扇的一端连接，所述第一电阻的另一端、LED灯的另一端、风扇的另一端分别与所述电流表的一端连接。In this embodiment, an auxiliary device is also included, and the auxiliary device includes: an LED lamp and a fan; the other end of the fuse is connected to port one of the insulation detection module, one end of the voltmeter, and one end of the first resistor respectively. One end of the LED light and one end of the fan are connected, and the other end of the first resistor, the other end of the LED light, and the other end of the fan are respectively connected to one end of the ammeter.
在本实施例的应用中，风扇，用于对第一电阻以及LED灯进行散热，同时也可作为第一电阻运行的指示，LED灯，同理用于作为第一电阻以及风扇的运行指示，同时也可提供夜间照明。In the application of this embodiment, the fan is used to dissipate heat from the first resistor and the LED lamp, and can also be used as an indication of the operation of the first resistor, and the LED lamp is similarly used as an indication of the operation of the first resistor and the fan. It can also provide night lighting.
在本实施例中，还包括机箱，所述故障测试装置内的各个组件均固定设置在所述机箱内。In this embodiment, a chassis is also included, and each component in the fault testing device is fixedly arranged in the chassis.
在本实施例的应用中，机箱，一方面方便于故障测试装置的安装与携带，另一方面，能够有效的隔离故障测试装置外的灰尘。In the application of this embodiment, the chassis, on the one hand, facilitates the installation and carrying of the fault testing device, and on the other hand, can effectively isolate the dust outside the fault testing device.
以上仅为本实用新型的优选实施例而已，并不用于限制本实用新型，对于本领域的技术人员来说，本实用新型可以有各种更改和变化。凡在本实用新型的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本实用新型的保护范围之内。The above are only preferred embodiments of the utility model, and are not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.
Claims (6)
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| CN202320791430.4U CN219577009U (en) | 2023-04-11 | 2023-04-11 | A photovoltaic string fault testing device |
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| CN202320791430.4U CN219577009U (en) | 2023-04-11 | 2023-04-11 | A photovoltaic string fault testing device |
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Assignee: Huahengqin County Photovoltaic Power Generation Co.,Ltd. Assignor: HUANENG NEW ENERGY CO.,LTD. SHANXI BRANCH Contract record no.: X2024980036287 Denomination of utility model: A photovoltaic string fault testing device Granted publication date: 20230822 License type: Common License Record date: 20241212 |
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