A ring main unit discharge detection device

Abstract

The present invention discloses a ring network cabinet discharge detection device, comprising a housing, an ultraviolet filter, a blue light filter, a first photodetector arranged in the housing, a second photodetector, an ultraviolet bias circuit, a blue light bias circuit and a dual-channel data acquisition circuit, wherein the peak wavelength of the ultraviolet filter is 340nm and the bandwidth is 10nm, the peak wavelength of the blue light filter is 480nm and the bandwidth is 10nm, a first opening and a second opening are arranged on the top of the housing, and the ultraviolet filter is installed at the first opening. The blue light filter is installed at the second opening, the first photodetector is located directly below the ultraviolet filter, the second photodetector is located directly below the blue light filter, the first photodetector is connected to the ultraviolet bias circuit, the second photodetector is connected to the blue light bias circuit, and the ultraviolet bias circuit and the blue light bias circuit are respectively connected to the dual-channel data acquisition circuit; the advantage is that the discharge fault can be detected in time, and the safety is improved.

Description

Technical Field

[0001] The invention relates to a discharge detection device, in particular to a ring network cabinet discharge detection device. Background Art

[0002] The humidity in coastal areas is usually high, so it is easy to cause excessive humidity in the ring main unit, which in turn affects the insulation distance in the ring main unit and easily causes a discharge fault in the ring main unit. If the discharge fault of the ring main unit is not discovered in time and allowed to develop, it will eventually lead to an insulation short circuit and a short circuit between the high voltage and the ground, which will cause the ring main unit to burn and explode. In more serious cases, the combustion and explosion of a ring main unit will cause the surrounding ring main units to burn.

[0003] The discharge process of the ring main unit is a slow-changing process. It often takes several days or even months from the early corona discharge to the final short circuit arcing. The discharge stage of the ring main unit is divided into the early stage, the middle stage and the late stage. In the early stage, the discharge usually produces ultraviolet light, while in the middle stage it produces blue light, and in the late stage it is the arcing stage that produces strong red or yellow light. The discharge process of the ring main unit usually takes several days to evolve from the middle stage to the late stage. If the discharge fault of the ring main unit can be discovered at the latest when the discharge enters the middle stage, then at least sufficient time can be provided for the maintenance of the ring main unit before the ring main unit burns and explodes, thereby effectively preventing the combustion and explosion caused by the ring main unit in the late stage.

[0004] However, due to the current limitations of manpower and material resources, the ring main unit is currently mainly maintained by manual regular maintenance, and its discharge fault is difficult to be discovered in time. In view of this, it is of great significance to design a ring main unit discharge detection device that can detect the discharge fault of the ring main unit in time and improve the safety of the ring main unit. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a ring main unit discharge detection device which can detect the discharge fault of the ring main unit in time and improve the use safety of the ring main unit.

[0006] The technical solution adopted by the present invention to solve the above technical problems is: a ring network cabinet discharge detection device, including a shell, an ultraviolet filter, a blue light filter, a first photodetector, a second photodetector, an ultraviolet bias circuit, a blue light bias circuit and a dual-channel data acquisition circuit, the peak wavelength of the ultraviolet filter is 340nm, the bandwidth is 10nm, the peak wavelength of the blue light filter is 480nm, the bandwidth is 10nm, the first photodetector, the second photodetector, the ultraviolet bias circuit, the blue light bias circuit and the dual-channel data acquisition circuit are all arranged in the shell, and the top of the shell is A first opening and a second opening are provided in parallel and spaced apart from each other and are communicated with the interior thereof respectively. The ultraviolet filter is installed at the first opening to close the first opening, and the blue light filter is installed at the second opening to close the second opening. The first photodetector is located directly below the ultraviolet filter, and the second photodetector is located directly below the blue light filter. The first photodetector is connected to the ultraviolet bias circuit, and the second photodetector is connected to the blue light bias circuit. The ultraviolet bias circuit and the blue light bias circuit are respectively connected to the dual-channel data acquisition circuit.

[0007] The ultraviolet filter and the blue light filter are respectively realized by using interference coating filters.

[0008] The first photodetector detects in real time whether ultraviolet light waves are generated in the ring network cabinet, and generates a corresponding signal according to the detection result and outputs it to the ultraviolet bias circuit. The ultraviolet bias circuit biases the signal output by the first photodetector and generates a corresponding analog electrical signal output. The second photodetector detects in real time whether blue light is generated in the ring network cabinet, and generates a corresponding signal according to the detection result and outputs it to the blue light bias circuit. The blue light bias circuit biases the signal output by the second photodetector and generates a corresponding analog electrical signal output. The dual-channel data acquisition circuit periodically collects the analog electrical signal output by the ultraviolet bias circuit and the analog electrical signal output by the blue light bias circuit, and determines whether the first photodetector detects ultraviolet light and whether the second photodetector detects blue light according to the analog electrical signal output by the ultraviolet bias circuit and the analog electrical signal output by the blue light bias circuit, and then generates a corresponding digital signal according to the determination result and sends it to the data receiving terminal device to realize the discharge detection of the ring network cabinet. The sampling period of the dual-channel data acquisition circuit is 1 minute.

[0009] The dual-channel data acquisition circuit includes a data acquisition processor and a 433M wireless module. The data acquisition processor is connected to the ultraviolet bias circuit and the blue light bias circuit respectively. The 433M wireless module is connected to the data acquisition processor. The 433M wireless module communicates with the data receiving terminal device through a wireless network.

[0010] Compared with the prior art, the advantage of the present invention is that a ring network cabinet discharge detection device is constructed by a shell, an ultraviolet filter, a blue light filter, a first photodetector, a second photodetector, an ultraviolet bias circuit, a blue light bias circuit and a dual-channel data acquisition circuit. The peak wavelength of the ultraviolet filter is 340nm and the bandwidth is 10nm. The peak wavelength of the blue light filter is 480nm and the bandwidth is 10nm. The first photodetector, the second photodetector, the ultraviolet bias circuit, the blue light bias circuit and the dual-channel data acquisition circuit are all arranged in the shell. The top of the shell is provided with a first opening and a second opening which are respectively communicated with the inside thereof in parallel and spaced apart. The ultraviolet filter is installed The first opening is closed at the first opening, the blue light filter is installed at the second opening to close the second opening, the first photodetector is located directly below the ultraviolet filter, the second photodetector is located directly below the blue light filter, the first photodetector is connected to the ultraviolet bias circuit, the second photodetector is connected to the blue light bias circuit, the ultraviolet bias circuit and the blue light bias circuit are respectively connected to the dual-channel data acquisition circuit, the first photodetector detects in real time whether ultraviolet light waves are generated in the ring network cabinet, and generates a corresponding signal according to the detection result and outputs it to the ultraviolet bias circuit, the ultraviolet bias circuit performs bias processing on the signal output by the first photodetector and generates a corresponding analog electrical signal output The second photoelectric detector detects in real time whether blue light is generated in the ring network cabinet, and generates a corresponding signal according to the detection result and outputs it to the blue light bias circuit. The blue light bias circuit biases the signal output by the second photoelectric detector and generates a corresponding analog electrical signal output. The dual-channel data acquisition circuit periodically collects the analog electrical signal output by the ultraviolet bias circuit and the analog electrical signal output by the blue light bias circuit, and determines whether the first photoelectric detector detects ultraviolet light and whether the second photoelectric detector detects blue light according to the analog electrical signal output by the ultraviolet bias circuit and the analog electrical signal output by the blue light bias circuit, and then generates a corresponding digital signal according to the determination result and sends it to the digital According to the receiving terminal equipment, the discharge detection of the ring network cabinet is realized. Therefore, in the present invention, the ultraviolet filter is paired with the first photodetector to detect the ultraviolet light generated in the early stage of the ring network cabinet discharge, and the blue light filter is paired with the second photodetector to detect the blue light generated in the middle stage of the ring network cabinet discharge. The ring network cabinet manager can communicate with the dual-channel data acquisition circuit through the data receiving terminal equipment set in the ring network cabinet management room, and timely obtain the discharge process of the ring network cabinet when a discharge fault occurs, and make corresponding maintenance measures accordingly, effectively avoiding the ring network cabinet entering the late stage of discharge. Caused by the severe consequences such as combustion and explosion, the use safety of the ring network cabinet is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural diagram of the ring main unit discharge detection device of the present invention. DETAILED DESCRIPTION

[0012] The present invention is further described in detail below with reference to the accompanying drawings.

[0013] Example: Figure 1 As shown, a ring main unit discharge detection device includes a shell 1, an ultraviolet filter 2, a blue light filter 3, a first photodetector 4, a second photodetector 5, an ultraviolet bias circuit 6, a blue light bias circuit 7 and a dual-channel data acquisition circuit 8. The peak wavelength of the ultraviolet filter 2 is 340nm and the bandwidth is 10nm. The peak wavelength of the blue light filter 3 is 480nm and the bandwidth is 10nm. The first photodetector 4, the second photodetector 5, the ultraviolet bias circuit 6, the blue light bias circuit 7 and the dual-channel data acquisition circuit 8 are all arranged in the shell 1. A first opening and a second opening which are communicated with the interior of the shell 1 are provided in parallel and spaced apart on the top thereof, an ultraviolet filter 2 is installed at the first opening to close the first opening, a blue light filter 3 is installed at the second opening to close the second opening, a first photodetector 4 is located directly below the ultraviolet filter 2, a second photodetector 5 is located directly below the blue light filter 3, the first photodetector 4 is connected to an ultraviolet bias circuit 6, the second photodetector 5 is connected to a blue light bias circuit 7, and the ultraviolet bias circuit 6 and the blue light bias circuit 7 are respectively connected to a dual-channel data acquisition circuit 8.

[0014] In this embodiment, the ultraviolet filter 2 and the blue light filter 3 are respectively implemented by using interference coating filters, and the ultraviolet bias circuit 6 and the blue light bias circuit 7 are respectively implemented by using currently mature voltage bias circuits.

[0015] In this embodiment, the first photodetector 4 detects in real time whether ultraviolet light waves are generated in the ring network cabinet, and generates a corresponding signal according to the detection result and outputs it to the ultraviolet bias circuit 6. The ultraviolet bias circuit 6 biases the signal output by the first photodetector 4 to generate a corresponding analog electrical signal output. The second photodetector 5 detects in real time whether blue light is generated in the ring network cabinet, and generates a corresponding signal according to the detection result and outputs it to the blue light bias circuit 7. The blue light bias circuit 7 biases the signal output by the second photodetector 5 to generate a corresponding analog electrical signal output. The dual-channel data acquisition circuit 8 periodically collects the analog electrical signal output by the ultraviolet bias circuit 6 and the analog electrical signal output by the blue light bias circuit 7, and determines whether the first photodetector 4 detects ultraviolet light and whether the second photodetector 5 detects blue light according to the analog electrical signal output by the ultraviolet bias circuit 6 and the analog electrical signal output by the blue light bias circuit 7, and then generates a corresponding digital signal according to the determination result and sends it to the data receiving terminal device to realize the discharge detection of the ring network cabinet. The sampling period of the dual-channel data acquisition circuit 8 is 1 minute.

[0016] In this embodiment, the dual-channel data acquisition circuit 8 includes a data acquisition processor and a 433M wireless module. The data acquisition processor is connected to the ultraviolet bias circuit 6 and the blue light bias circuit 7 respectively, and the 433M wireless module is connected to the data acquisition processor. The 433M wireless module communicates with the data receiving terminal device through a wireless network.

Claims

1. A ring main unit discharge detection device, characterized in that The invention comprises a shell, an ultraviolet filter, a blue light filter, a first photodetector, a second photodetector, an ultraviolet bias circuit, a blue light bias circuit and a dual-channel data acquisition circuit, wherein the peak wavelength of the ultraviolet filter is 340nm and the bandwidth is 10nm, the peak wavelength of the blue light filter is 480nm and the bandwidth is 10nm, the first photodetector, the second photodetector, the ultraviolet bias circuit, the blue light bias circuit and the dual-channel data acquisition circuit are all arranged in the shell, and the top of the shell is parallelly and spaced apart with a first opening and a second opening respectively communicating with the inside thereof, the ultraviolet filter The sheet is installed at the first opening to close the first opening, the blue light filter is installed at the second opening to close the second opening, the first photodetector is located directly below the ultraviolet filter, the second photodetector is located directly below the blue light filter, the first photodetector is connected to the ultraviolet bias circuit, the second photodetector is connected to the blue light bias circuit, the ultraviolet bias circuit and the blue light bias circuit are respectively connected to the dual-channel data acquisition circuit; the ultraviolet filter and the blue light filter are respectively implemented by interference coating filters; The first photodetector detects in real time whether ultraviolet light waves are generated in the ring network cabinet, and generates a corresponding signal according to the detection result and outputs it to the ultraviolet bias circuit. The ultraviolet bias circuit biases the signal output by the first photodetector and generates a corresponding analog electrical signal output. The second photodetector detects in real time whether blue light is generated in the ring network cabinet, and generates a corresponding signal according to the detection result and outputs it to the blue light bias circuit. The blue light bias circuit biases the signal output by the second photodetector and generates a corresponding analog electrical signal output. The dual-channel data acquisition circuit periodically collects the analog electrical signal output by the ultraviolet bias circuit and the analog electrical signal output by the blue light bias circuit, and determines whether the first photodetector detects ultraviolet light and whether the second photodetector detects blue light according to the analog electrical signal output by the ultraviolet bias circuit and the analog electrical signal output by the blue light bias circuit, and then generates a corresponding digital signal according to the determination result and sends it to the data receiving terminal device to realize the discharge detection of the ring network cabinet. The sampling period of the dual-channel data acquisition circuit is 1 minute.

2. The ring main unit discharge detection device according to claim 1 is characterized in that The dual-channel data acquisition circuit includes a data acquisition processor and a 433M wireless module. The data acquisition processor is connected to the ultraviolet bias circuit and the blue light bias circuit respectively. The 433M wireless module is connected to the data acquisition processor. The 433M wireless module communicates with the data receiving terminal device through a wireless network.

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