Power plant photovoltaic power station current collection line distributed temperature measurement protection device

Abstract

The utility model relates to the technical field of power plant photovoltaic power station distributed temperature measurement, in particular to a power plant photovoltaic power station current collection circuit distributed temperature measurement protection device, which comprises a power station integrated electric circuit, a temperature measurement device main body and a connection optical fiber, and is characterized in that the connection optical fiber is fixedly connected to one side of the temperature measurement device main body; the other end of the connecting optical fiber is provided with a distributed omnibearing fixed-point temperature measurement protection device, the inner side of the power station integrated circuit is provided with an integrated circuit structure, and the outer side of the temperature measurement device body is provided with an acousto-optic-electric high-visibility prompt structure. According to the power plant photovoltaic power station current collection line distributed temperature measurement protection device, the real-time temperature of a buried cable of the current collection line can be displayed through the distributed optical fiber temperature measurement system, an overheated point can be found in time, fixed-point temperature monitoring can be achieved more accurately, the temperature measurement alarm process can be achieved at the fastest speed, and the power plant photovoltaic power station current collection line distributed temperature measurement protection device is convenient to use. And the use safety of the power plant photovoltaic power station current collection line distributed temperature measurement protection device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of distributed temperature measurement of photovoltaic power stations in power plants, in particular to a distributed temperature measurement protection device for collector lines of photovoltaic power stations in power plants. Background Art

[0002] The safety of power system equipment has always been taken seriously by management departments at all levels. Cable trays, cable tunnels, cable mezzanines, cable trenches, cable shafts, etc., which work in high-voltage environments for a long time, are very likely to cause fires due to excessive temperatures.

[0003] For example, the publication number "CN110375881A" is named a distributed optical fiber temperature measuring device and its temperature measuring system. Through the support rod, placement slot, telescopic rod, fixing hole and fixing knob, the support rod can be pulled out of the placement slot, and the support rod and the telescopic rod are fixed. Finally, the support rod and the telescopic rod support the display, which is convenient for adjusting the angle and supporting the display. However, the existing distributed optical fiber temperature measuring device and its temperature measuring system adopt the receiving heat source signal to achieve the purpose of temperature measurement and alarm. However, it is difficult to face the real-time monitoring and identification of the temperature at a certain point in the cable line set up for tens of kilometers by relying solely on independent heat source signal sensing. In this way, when the temperature of the cable line suddenly rises and is easy to ignite, the existing distributed optical fiber temperature measuring device and its temperature measuring system cannot timely and accurately determine the location of the temperature change. In this way, the time reserved for the staff to deal with the high temperature problem of the cable and respond to the occurrence of fire is relatively rushed, which reduces the safety of the use of the distributed optical fiber temperature measuring device and its temperature measuring system.

[0004] At the same time, the existing distributed optical fiber temperature measuring device and its temperature measuring system, because they directly display the danger on the display after identifying the temperature change of the cable, do not have a more obvious sound and light reminder function. As a result, when the temperature measuring device is on standby and there is no staff to deal with it, it is too late to deal with the fire alarm, which reduces the actual use effect of the distributed optical fiber temperature measuring device and its temperature measuring system. Utility Model Content

[0005] The utility model aims to solve the problems of low safety and poor use effect of distributed optical fiber temperature measuring devices and temperature measuring systems thereof, and proposes a distributed temperature measuring protection device for a collector line of a photovoltaic power station in a power plant.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A distributed temperature measurement and protection device for a collector line of a photovoltaic power station in a power plant is designed, comprising an integrated power station circuit, a temperature measurement device body and a connecting optical fiber. The connecting optical fiber is fixedly connected to one side of the temperature measurement device body, and the other end of the connecting optical fiber is provided with a distributed omnidirectional fixed-point temperature measurement and protection device. An integrated circuit structure is provided on the inner side of the integrated power station circuit, and an acoustic, optical and electrical high-visibility prompt structure is provided on the outer side of the temperature measurement device body.

[0008] Preferably, the distributed omnidirectional fixed-point temperature measurement protection device includes a connection end and a fiber optic temperature measuring point, the connection end is fixedly connected below the other end of the connecting optical fiber, the lower end of the connection end is fixedly connected to a fiber optic temperature measuring point, a plurality of the fiber optic temperature measuring points are fixedly connected to the outer wall of the power station integrated circuit, a plurality of the fiber optic temperature measuring points are fixedly connected with docking optical fibers, and a plurality of insulating ties are fixedly connected to the outer sides of two of the fiber optic temperature measuring points.

[0009] Preferably, the inner walls of the plurality of insulating tie wraps are movably sleeved on both sides of the outer walls of the integrated circuit of the power station, the plurality of optical fiber temperature measuring points are equidistantly distributed in parallel, and the plurality of optical fiber temperature measuring points are fixedly connected to the main body of the temperature measuring device through connecting optical fibers.

[0010] Preferably, the integrated circuit structure includes a steel belt and a sheath, the steel belt is fixedly connected to the inside of the power station integrated circuit, the inner side of the steel belt is fixedly connected to the sheath, the inner side of the sheath is fixedly connected to the filling layer, and the inner side of the filling layer is fixedly connected to the cable core.

[0011] Preferably, the sound, light and electricity high-visibility warning structure includes a connecting plate and a control panel, the control panel is fixedly opened on the top of the temperature measuring device body, the connecting plate is fixedly installed on the front end of the outer wall of the temperature measuring device body, a plurality of warning lights are fixedly installed on the outer wall of the connecting plate, an alarm horn is fixedly connected to the side wall of the temperature measuring device body, and the top of the temperature measuring device body is rotatably connected to a flip shaft through a pin shaft.

[0012] Preferably, a display is fixedly connected to the top of the flip shaft, the inner side of the display is movably connected to the top of the control panel, and the display is electrically connected to the optical fiber temperature measuring point through a wire.

[0013] The utility model proposes a distributed temperature measurement and protection device for the collector line of a photovoltaic power station in a power plant. The beneficial effect is that: the insulating tie is made of an insulating rubber belt with good toughness, and multiple insulating tie bands are used to tie multiple optical fiber temperature measurement points on the outer wall of the integrated power circuit of the power station in pairs. The distributed optical fiber temperature measurement system can display the real-time temperature of the buried cable of the collector line, and timely discover hot spots to more accurately realize fixed-point temperature monitoring, and can realize the temperature measurement alarm process at the fastest speed, thereby improving the safety of use of the distributed temperature measurement and protection device for the collector line of the photovoltaic power station in the power plant.

[0014] The warning lights are provided with multiple rows of multiple colors, including green bulbs and red bulbs. The warning lights are made of LED lamp structure. When the cable is monitored by the optical fiber temperature measuring point and the temperature is abnormal or the temperature rises too fast, the corresponding number of red lights can be activated according to the point where the heat abnormality occurs. The alarm speaker can promptly send out a loud and shrill siren after the temperature abnormality occurs. In this way, the multi-faceted coordination of sound, light and electricity is used to remind the staff of the dangerous situation of fire and cable burning, thereby improving the use effect of the distributed temperature measurement and protection device of the collector line of the power plant photovoltaic power station. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0016] Figure 2 for Figure 1 A front cross-sectional schematic diagram of

[0017] Figure 3 for Figure 1 A side cross-sectional schematic diagram of

[0018] Figure 4 for Figure 2 Enlarged cross-sectional view of part A in the middle;

[0019] Figure 5 for Figure 3 Enlarged cross-sectional view of part B in the middle;

[0020] Figure 6 for Figure 3 Enlarged cross-sectional view of part C in the middle.

[0021] In the figure: 1. power station integrated circuit, 2. temperature measuring device body, 3. connecting optical fiber, 4. display, 5. distributed all-round fixed-point temperature measurement and protection device, 51. connection end, 52. optical fiber temperature measuring point, 53. docking optical fiber, 54. insulating tie, 6. integrated circuit structure, 61. steel belt, 62. sheath, 63. filling layer, 64. cable inner core, 7. sound, light and electricity high-visibility prompt structure, 71. connecting plate, 72. prompt light, 73. alarm horn, 74. control panel, 75. flip axis. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the accompanying drawings:

[0023] Embodiment 1:

[0024] See also Figure 1-6: In this embodiment, a distributed temperature measurement and protection device for the collector line of a photovoltaic power station in a power plant includes a power station integrated circuit 1, a temperature measuring device body 2 and a connecting optical fiber 3. The connecting optical fiber 3 is fixedly connected to one side of the temperature measuring device body 2. The temperature measuring device body 2 belongs to the prior art means disclosed in the comparative document with the publication number "CN110375881A" and is named a distributed optical fiber temperature measuring device and its temperature measurement system. The temperature measuring device body 2 can be composed of a controller, a processor, a storage and a transmitter. The photoelectric converter is converted into an electrical signal, and the electrical signal converted by the photoelectric converter is then transmitted to the processor, and the electrical signal is processed to obtain the temperature of the heat source.

[0025] The obtained heat source temperature condition can be transmitted to the memory for storage through the controller, and the heat source temperature condition can be transmitted to the display for display. The obtained heat source temperature condition can also be transmitted to the transmitter through the controller and transmitted through the transmitter. Because it is an already disclosed prior art, it is briefly described in this scheme. A distributed omnidirectional fixed-point temperature measurement protection device 5 is provided at the other end of the optical fiber 3, an integrated circuit structure 6 is provided on the inner side of the power station integrated circuit 1, and an acoustic, optical and electrical high-visibility prompt structure 7 is provided on the outer side of the temperature measuring device body 2.

[0026] The distributed all-round fixed-point temperature measurement protection device 5 includes a connection end 51 and an optical fiber temperature measurement point 52. The connection end 51 is fixedly connected below the other end of the connecting optical fiber 3. The lower end of the connection end 51 is fixedly connected with an optical fiber temperature measurement point 52. Multiple optical fiber temperature measurement points 52 are fixedly connected to the outer wall of the integrated power circuit 1 of the power station. The optical fiber temperature measurement point 52 adopts distributed optical fiber sensor distributed measurement, which can continuously obtain measurement information along the detection optical cable for dozens of kilometers. The false alarm and missed alarm rates are greatly reduced, and real-time monitoring is realized at the same time. A docking optical fiber 53 is fixedly connected between the multiple optical fiber temperature measurement points 52. The docking optical fiber 53 and the connecting optical fiber 3 are both made of quartz glass.

[0027] Optical cables with various characteristics are formed through various packages, which have the advantages of high transmission efficiency, wear resistance and convenience of use. Multiple insulating ties 54 are fixedly connected to the outside of the two optical fiber temperature measuring points 52. The insulating ties 54 are made of insulating and tough rubber belts. Multiple insulating ties 54 tie the multiple optical fiber temperature measuring points 52 to the outer wall of the power station integrated circuit 1 in pairs. The distributed optical fiber temperature measurement system can display the real-time temperature of the buried cables of this collection line and detect hot spots in time. Once the measured ambient temperature value or temperature rise rate on the high-voltage cable exceeds the set threshold, the system automatically alarms.

[0028] The inner walls of multiple insulating straps 54 are movably sleeved on both sides of the outer wall of the power station integrated circuit 1, and multiple optical fiber temperature measuring points 52 are equidistantly distributed in parallel, and the multiple optical fiber temperature measuring points 52 are fixedly connected to the temperature measuring device body 2 through the connecting optical fiber 3;

[0029] The docking optical fiber 53 and the connecting optical fiber 3 are both made of quartz glass, and various characteristics of optical cables are formed through various packages. They have the advantages of high transmission efficiency, wear resistance and convenience of use. The insulating tie 54 is made of an insulating and tough rubber belt. Multiple insulating tie ties 54 tie multiple optical fiber temperature measuring points 52 on the outer wall of the power station integrated circuit 1 in pairs. The distributed optical fiber temperature measurement system can display the real-time temperature of the buried cable of this collector line and detect hot spots in time. Once the measured ambient temperature value or temperature rise rate on the high-voltage cable exceeds the set threshold, the system automatically alarms, and uses multiple optical fiber temperature measurement structures distributed on the outside of the integrated circuit to more accurately realize fixed-point temperature monitoring, and can realize the temperature measurement alarm process at the fastest speed, thereby improving the safety of the distributed temperature measurement protection device for the collector line of the power plant photovoltaic power station.

[0030] The sound, light and electricity high-visibility warning structure 7 includes a connecting plate 71 and a control panel 74. The control panel 74 is fixedly opened at the top of the temperature measuring device body 2. The connecting plate 71 is fixedly installed on the front end of the outer wall of the temperature measuring device body 2. A plurality of warning lights 72 are fixedly installed on the outer wall of the connecting plate 71. The warning lights 72 are provided with multiple rows of multiple colors, including green bulbs and red bulbs. The warning lights 72 are made of LED lamp structure. When the temperature measuring device body 2 performs temperature measurement normally through different warning lights 72, all the warning lights 72 are green. When the cable is monitored by the optical fiber temperature measuring point 62 for abnormal temperature or too fast heating, the corresponding number of red lights can be activated according to the point where the heat abnormality occurs. According to the number of red lights, the severity of the problem can be clearly identified.

[0031] An alarm speaker 73 is fixedly connected to the side wall of the temperature measuring device body 2. The alarm speaker 73 can emit a loud and piercing siren in time when an abnormal temperature occurs, thereby using the multi-directional coordination of sound, light and electricity to remind staff of the dangerous situation of fire and cable burning. The top of the temperature measuring device body 2 is rotatably connected to a flip shaft 75 through a pin shaft, and the top of the flip shaft 75 is fixedly connected to a display 4. The display 4 can display the data results of the cable optical fiber temperature measurement. The display 4 can rotate along the lower end flip shaft 75 to adjust the angle above the temperature measuring device body 2. The inner side of the display 4 is movably connected to the top of the control panel 74. The control panel 74 belongs to the prior art that has been disclosed in the comparative document. The operation of the optical fiber temperature measuring point 62 is remotely controlled by the button on the top of the control panel 4, and the display 4 is electrically connected to the optical fiber temperature measuring point 52 through a wire.

[0032] Working principle:

[0033] When using the distributed temperature measurement protection device for the collector line of the power plant photovoltaic power station, the temperature change of the cable is sensed by the distributed optical fiber. The distributed optical fiber linear temperature fire detector is based on the principle of Raman light time-domain backscattering technology. A laser pulse is transmitted in the optical fiber, and the backscattering signal of each point on the optical fiber can be obtained at its transmission terminal. After analysis, the light intensity of the Raman scattering signal contains the temperature field information of the entire optical fiber. There are many wavelengths in the backscattered light signal. Some wavelengths of signals are affected by temperature changes, while some are not. By accurately measuring the signal intensity difference of the backscattered signal, an accurate temperature measurement device can be realized.

[0034] First, the temperature measuring device body 2 belongs to the prior art means disclosed in the comparative document publication number "CN110375881A" and is named a distributed optical fiber temperature measuring device and its temperature measuring system. The temperature measuring device body 2 can be composed of a controller, a processor, a storage and a transmitter. The photoelectric converter is converted into an electrical signal, and then the electrical signal converted by the photoelectric converter is transmitted to the processor, and the electrical signal is processed to obtain the temperature of the heat source. The obtained heat source temperature can be transmitted to the memory for storage through the controller, and the heat source temperature can be transmitted to the display for display. The obtained heat source temperature can also be transmitted to the transmitter through the controller and transmitted through the transmitter;

[0035] Safe and accurate circuit temperature monitoring process of distributed temperature measurement and protection device for collector lines of photovoltaic power stations in power plants:

[0036] The butt-jointed optical fiber 53 and the connecting optical fiber 3 are both made of quartz glass, and various packages are used to form optical cables with various characteristics, which have the advantages of high transmission efficiency, wear resistance and convenience of use. The insulating tie 54 is made of an insulating rubber belt with good toughness. Multiple insulating tie ties 54 tie multiple optical fiber temperature measurement points 52 on the outer wall of the integrated power circuit 1 of the power station in pairs. The distributed optical fiber temperature measurement system can display the real-time temperature of the buried cable of this power collection line and find hot spots in time. Once the measured ambient temperature value or temperature rise rate on the high-voltage cable exceeds the set threshold, the system automatically alarms, and uses multiple optical fiber temperature measurement structures distributed on the outside of the integrated circuit to more accurately realize fixed-point temperature monitoring, and can realize the temperature measurement alarm process at the fastest speed;

[0037] The sound and light prompt structure of the distributed temperature measurement protection device for the collector line of the photovoltaic power station of the power plant:

[0038] The warning lights 72 are provided with multiple rows of multiple colors, including green bulbs and red bulbs. The warning lights 72 are made of LED lamp structure. When the temperature measuring device body 2 performs temperature measurement work normally through different warning lights 72, all the warning lights 72 are green. When the cable is monitored by the optical fiber temperature measuring point 62 and the temperature is abnormal or the temperature rises too fast, the corresponding number of red lights can be activated according to the point where the heat abnormality occurs. According to the number of red lights, the seriousness of the problem is clearly marked. The alarm speaker 73 can promptly emit a loud and harsh siren after the temperature abnormality occurs. In this way, the multi-directional coordination of sound, light and electricity is used to remind the staff of the dangerous situation of fire and cable burning, thereby improving the use effect of the distributed temperature measurement protection device of the collector line of the power plant photovoltaic power station.

[0039] Embodiment 2:

[0040] See also Figure 1-6 : In the present embodiment, a distributed temperature measurement and protection device for a collector line of a photovoltaic power station in a power plant also includes an integrated circuit structure 6 including a steel belt 61 and a sheath 62. The steel belt 61 is fixedly connected to the inside of the integrated power circuit 1 of the power station. The steel belt 61 is made of a steel material arranged on the integrated power circuit 1 of the power station, and has the performance of pressure resistance and bending resistance. The inner side of the steel belt 61 is fixedly connected with a sheath 62, and the sheath 62 is made of a rubber material. The sheath 62 surrounds the inside of a cable core 64, and can protect the cable core 64 from external influences. The inner side of the sheath 62 is fixedly connected with a filling layer 63, and the filling layer 63 is made of a chemical fiber material and is wrapped around the outside of a cable core 64 made of copper to reduce current leakage. The inner side of the filling layer 63 is fixedly connected with the cable core 64.

[0041] Working principle:

[0042] The steel belt 61 is fixedly connected to the inside of the power station integrated circuit 1. The steel belt 61 is made of steel material set in the power station integrated circuit 1, and has the performance of pressure resistance and bending resistance. The sheath 62 surrounds the inside of the cable core 64, which can protect the cable core 64 from external influences. The filling layer 63 is made of chemical fiber material and wrapped around the outside of the cable core 64 made of copper to reduce current leakage.

[0043] Although the present invention has been shown and described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. A distributed temperature measurement protection device for a photovoltaic power station collector line of a power plant, comprising a power station integrated circuit (1), a temperature measurement device body (2) and a connecting optical fiber (3), wherein the connecting optical fiber (3) is fixedly connected to one side of the temperature measurement device body (2), and is characterized in that: The other end of the connecting optical fiber (3) is provided with a distributed all-round fixed-point temperature measurement protection device (5), the inner side of the power station integrated circuit (1) is provided with an integrated circuit structure (6), and the outer side of the temperature measurement device body (2) is provided with an acoustic, optical and electrical high-visibility prompt structure (7).

2. A distributed temperature measurement and protection device for collector lines of a photovoltaic power station in a power plant according to claim 1, characterized in that: The distributed all-round fixed-point temperature measurement protection device (5) comprises a connection end (51) and an optical fiber temperature measurement point (52), wherein the connection end (51) is fixedly connected below the other end of the connection optical fiber (3), the lower end of the connection end (51) is fixedly connected to the optical fiber temperature measurement point (52), a plurality of the optical fiber temperature measurement points (52) are fixedly connected to the outer wall of the power station integrated circuit (1), a docking optical fiber (53) is fixedly connected between the plurality of the optical fiber temperature measurement points (52), and a plurality of insulating ties (54) are fixedly connected to the outer sides of two of the optical fiber temperature measurement points (52).

3. A distributed temperature measurement and protection device for collector lines of a photovoltaic power station in a power plant according to claim 2, characterized in that: The inner walls of the plurality of insulating straps (54) are movably sleeved on both sides of the outer wall of the power station integrated circuit (1), the plurality of optical fiber temperature measurement points (52) are equidistantly distributed in parallel, and the plurality of optical fiber temperature measurement points (52) are fixedly connected to the temperature measurement device body (2) via connecting optical fibers (3).

4. A distributed temperature measurement and protection device for collector lines of a photovoltaic power station in a power plant according to claim 1, characterized in that: The integrated circuit structure (6) comprises a steel strip (61) and a sheath (62); the steel strip (61) is fixedly connected to the inside of the power station integrated circuit (1); the inner side of the steel strip (61) is fixedly connected to the sheath (62); the inner side of the sheath (62) is fixedly connected to a filling layer (63); and the inner side of the filling layer (63) is fixedly connected to a cable inner core (64).

5. A distributed temperature measurement and protection device for collector lines of a photovoltaic power station in a power plant according to claim 1, characterized in that: The sound, light and electricity high visibility warning structure (7) comprises a connecting plate (71) and a control panel (74); the control panel (74) is fixedly arranged at the top end of the temperature measuring device body (2); the connecting plate (71) is fixedly mounted at the front end of the outer wall of the temperature measuring device body (2); a plurality of warning lights (72) are fixedly mounted on the outer wall of the connecting plate (71); an alarm horn (73) is fixedly connected to the side wall of the temperature measuring device body (2); and the top end of the temperature measuring device body (2) is rotatably connected to a flip shaft (75) via a pin shaft.

6. A distributed temperature measurement and protection device for collector lines of a photovoltaic power station in a power plant according to claim 5, characterized in that: The top end of the flip shaft (75) is fixedly connected to a display (4), the inner side of the display (4) is movably connected to the top end of the control panel (74), and the display (4) is electrically connected to the optical fiber temperature measuring point (52) via a wire.

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