Photovoltaic string wiring harness

Abstract

The utility model discloses a photovoltaic group string wire harness, which comprises a photovoltaic group string and a wire string, the photovoltaic group string comprises M photovoltaic assemblies, each photovoltaic assembly is connected with a first positive electrode photovoltaic wiring terminal and a first negative electrode photovoltaic wiring terminal, and each photovoltaic assembly is connected with the wire string through the first positive electrode photovoltaic wiring terminal and the first negative electrode photovoltaic wiring terminal; the wire string comprises a protection tube, M groups of photovoltaic wiring terminal groups and M sensors, each group of photovoltaic wiring terminal group is respectively plugged with a corresponding first positive electrode photovoltaic wiring terminal and a corresponding first negative electrode photovoltaic wiring terminal, and each group of photovoltaic wiring terminal group is connected with a corresponding sensor; the sensors are connected through a bus. The sensor is used for detecting signals of on-off, voltage, current, cable temperature, electric arc and the like of each photovoltaic assembly, the detected data is transmitted to the upper computer through the communication terminal for visual monitoring, operation and maintenance, and the problem that the detection depth is not enough in the operation process of the photovoltaic assembly string can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic string wiring, in particular to a photovoltaic string wiring harness. Background Art

[0002] At present, the string wiring process of traditional photovoltaic power stations is complicated and the construction efficiency is low. The subsequent monitoring and operation and maintenance are only carried out through the inverter input port. The monitoring depth and accuracy are insufficient. String connection problems during construction and string failures during operation cannot be detected, monitored, and eliminated in time. Utility Model Content

[0003] The purpose of this application is to provide a photovoltaic string harness to address the technical defects in the prior art.

[0004] The technical solution adopted to achieve the purpose of this application is:

[0005] A photovoltaic string harness comprises a photovoltaic string and a line string;

[0006] The photovoltaic string comprises M photovoltaic modules, M≥1, each photovoltaic module is connected to a first positive photovoltaic terminal and a first negative photovoltaic terminal, and each photovoltaic module is connected to the string via the first positive photovoltaic terminal and the first negative photovoltaic terminal;

[0007] The line string includes a protection tube, M groups of photovoltaic terminal groups and M sensors, each group of photovoltaic terminal groups is respectively plugged into its corresponding first positive photovoltaic terminal and first negative photovoltaic terminal, and each group of photovoltaic terminal groups is connected to its corresponding sensor; each sensor is connected through a bus.

[0008] In the above technical solution, the protection tube is an openable square tube or round tube, which is composed of two U-shaped tubes.

[0009] In the above technical solution, the number of the photovoltaic modules is 10-15.

[0010] The beneficial effects of the utility model are as follows:

[0011] 1. The photovoltaic string harness of the utility model is connected to a first positive photovoltaic terminal and a first negative photovoltaic terminal on each photovoltaic module, and each first positive photovoltaic terminal and first negative photovoltaic terminal are respectively plugged into their corresponding photovoltaic terminal groups, and each photovoltaic terminal group is connected to a sensor for detecting the on / off, voltage, current, cable temperature, arc and other signals of each photovoltaic module. The detected data is transmitted to the host computer through the communication terminal for visual monitoring and operation and maintenance, which can solve the problem of insufficient detection depth during the operation of the photovoltaic string.

[0012] 2. The wire string of the utility model is provided with a protective tube, which can protect the wiring harness during the operation of the photovoltaic string harness and improve the wiring quality of the photovoltaic string. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the present application or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0014] Figure 1 This is a schematic diagram of the photovoltaic string harness structure of the utility model.

[0015] Figure 2 It is an enlarged view of the local structure of the wiring harness of the utility model.

[0016] In the figure: 1- photovoltaic string, 1-1- photovoltaic module, 1-2- first positive photovoltaic terminal, 1-3- first negative photovoltaic terminal, 2- wiring harness, 2-1- second positive photovoltaic terminal, 2-2- second negative photovoltaic terminal, 3- flexible protective tube, 4- sensor, 4-1- bus. DETAILED DESCRIPTION

[0017] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the technical solution of the present utility model is further described below in conjunction with specific embodiments.

[0018] A photovoltaic string harness, see Figure 1 , Figure 2 , including photovoltaic string 1 and line string 2.

[0019] The photovoltaic string 1 includes M photovoltaic components 1-1 arranged side by side, M≥1, each photovoltaic component 1-1 is connected to a first positive photovoltaic terminal 1-2 and a first negative photovoltaic terminal 1-3, and each photovoltaic component 1-1 is connected to the string 2 via the first positive photovoltaic terminal 1-2 and the first negative photovoltaic terminal 1-3.

[0020] The string 2 includes a protective tube, M groups of photovoltaic terminal groups and M sensors 4. The protective tube is an openable square tube or round tube, which is composed of two U-shaped tubes; each group of photovoltaic terminal groups is respectively plugged into the first positive photovoltaic terminal 1-2 and the first negative photovoltaic terminal 1-3 corresponding to it, and each group of photovoltaic terminal groups is connected to the corresponding sensor 4, which is used to detect the on-off, voltage, current, cable temperature and arc signals of each photovoltaic component 1-1, and transmit the detected data to the host computer through the communication terminal for visual monitoring and operation and maintenance, which can solve the problem of insufficient detection depth during the operation of the photovoltaic string; each sensor 4 is connected through a bus 4-1 (for example, a CAN bus). It can be seen that each photovoltaic terminal group is connected in series through the bus 4-1. The volt terminal group includes a second positive photovoltaic terminal 2-1 and a second negative photovoltaic terminal 2-2. The number of photovoltaic components 1-1 is preferably 10-15.

[0021] A method for installing a photovoltaic string harness comprises the following steps:

[0022] Step 1, connect the second positive photovoltaic terminal 2-1 and the second negative photovoltaic terminal 2-2 to the corresponding sensor 4, open the retractable protection tube 3 into two U-shaped tubes, then lay the sensor 4 and the bus connected to it to one U-shaped tube, and cover it with another U-shaped tube to close the protection tube 3;

[0023] Step 2, plugging the first positive photovoltaic terminal 1-2 and the first negative photovoltaic terminal 1-3 on each photovoltaic module 1-1 into the corresponding second positive photovoltaic terminal 2-1 and second negative photovoltaic terminal 2-2 respectively;

[0024] Step 3, using the sensor 4 to detect the on / off, voltage, current, cable temperature, arc and other signals of the photovoltaic module 1-1, and transmitting the detected data to the host computer through the communication terminal for visual monitoring and operation and maintenance.

[0025] For ease of explanation, spatial relative terms such as "upper", "lower", "left", "right" and the like are used in the embodiments to illustrate the relationship of one element or feature shown in the figure relative to another element or feature. It should be understood that, in addition to the orientation shown in the figure, the spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figure is inverted, the element described as being "under" other elements or features will be positioned "on" other elements or features. Therefore, the exemplary term "under" can include both upper and lower orientations. The device can be positioned in other ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used here can be interpreted accordingly.

[0026] Furthermore, relational terms such as “first” and “second” and the like are merely used to distinguish one component from another having the same name, but do not necessarily require or imply any such actual relationship or order between these components.

[0027] The above is only a preferred embodiment of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A photovoltaic string harness, characterized in that: Including photovoltaic strings and line strings; The photovoltaic string comprises M photovoltaic modules, M≥1, each photovoltaic module is connected to a first positive photovoltaic terminal and a first negative photovoltaic terminal, and each photovoltaic module is connected to the string via the first positive photovoltaic terminal and the first negative photovoltaic terminal; The line string includes a protection tube, M groups of photovoltaic terminal groups and M sensors, each group of photovoltaic terminal groups is respectively plugged into its corresponding first positive photovoltaic terminal and first negative photovoltaic terminal, and each group of photovoltaic terminal groups is connected to its corresponding sensor; each sensor is connected through a bus.

2. The photovoltaic string harness according to claim 1, characterized in that: The protection tube is an openable square tube or a round tube, and is composed of two U-shaped tubes.

3. The photovoltaic string harness according to claim 1, characterized in that: The number of the photovoltaic modules is 10-15.

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