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CN-224218361-U - Photoelectric direct current cable safety monitoring system

CN224218361UCN 224218361 UCN224218361 UCN 224218361UCN-224218361-U

Abstract

The utility model relates to a cable safety monitoring system, belongs to the technical field of safety monitoring of photovoltaic power generation systems, and particularly relates to a photoelectric direct current cable safety monitoring system. The system comprises a monitoring terminal body, a gateway controller, a string monitoring terminal, a line control air switch, a photovoltaic panel string group and the like. The direct-current cable is quickly installed and self-adaptively fixed in multiple specifications through the linkage of the sliding rod, the sliding block, the spring column and the adjustable clamp, the protection and maintenance efficiency is improved by utilizing the cooperation of the magnetic shielding component and the limiting groove, and the real-time monitoring of the running state, the timely alarm disposal of faults and the remote monitoring are achieved by means of the system integrated equipment. The utility model achieves the effects of improving the installation stability of the optical Fu Zhi streamline cable, enhancing the protection effect and realizing efficient monitoring and response, and solves the problems of unstable installation and fixation, insufficient protection and state monitoring lag of the optical Fu Zhi streamline cable.

Inventors

  • YANG LEI
  • CAO XIAOBO
  • ZHOU LINGLING

Assignees

  • 内蒙古北方同创新能源科技有限公司

Dates

Publication Date
20260508
Application Date
20250520

Claims (10)

  1. 1. An optoelectronic dc cable safety monitoring system comprising: The monitoring terminal comprises a monitoring terminal body (1), wherein a pair of concave mounting frames (2) with forward openings are arranged at the bottom of the monitoring terminal body, and a sliding groove (201), a guide rail assembly, a clamp component and a shielding component are arranged on the inner side of each mounting frame (2); The gateway controller is arranged at the inverter end, internally provided with a power supply module and a sensor and used for collecting electric parameters of a tandem loop of the inverter; The string monitoring terminal is integrated in the monitoring terminal body (1), comprises a LoRa communication module and a power supply, and is used for monitoring the electrical parameters of the photovoltaic panel string and communicating with the gateway controller through a LoRa wireless network; The wire control is opened, is electrically connected with the string monitoring terminal through a cable interface and is controlled by the string monitoring terminal to break or close string transmission; the photovoltaic panel string group is connected with the wire control air switch through a direct-current cable; The LoRa communication module of the string monitoring terminal comprises an antenna structure, and the gateway controller is connected with the system platform through a communication interface.
  2. 2. The photoelectric direct current cable safety monitoring system according to claim 1, wherein the guide rail assembly comprises a sliding rod (5) inside a sliding groove (201), a spring column (501) is sleeved on the sliding rod (5), the clamp component comprises an upper limiting ring (3) connected with the inner top of the mounting frame (2) and a lower limiting ring (4) below the upper limiting ring (3), a circle is formed by surrounding the upper limiting ring (3) and the lower limiting ring (4), one side of the lower limiting ring (4) is connected with a sliding block (401), the sliding block (401) is sleeved on the rod of the sliding rod (5) in a sliding mode, threaded holes are formed in protruding positions of front ends of the upper limiting ring (3) and the lower limiting ring (4), and a fixing bolt (402) and a nut (403) are connected with front end threads of the upper limiting ring (3) and the lower limiting ring (4).
  3. 3. The photoelectric direct current cable safety monitoring system according to claim 1, wherein a rain shielding cover plate (101) with a narrow upper part and a wide lower part is arranged at the top of the monitoring terminal body (1).
  4. 4. The photoelectric direct current cable safety monitoring system according to claim 1, wherein the shielding component comprises a first magnetic shielding piece (6) connected with the front side and the rear side of the monitoring terminal body (1) and a second shielding piece (601) with two groups of mounting frames (2) far away from each other, one row of the first magnetic shielding piece (6) is transversely arranged on the front side and the rear side of the monitoring terminal body (1), two groups of the second shielding piece (601) are respectively arranged on the two sides of the monitoring terminal body (1), the front side and the rear side of the mounting frames (2) are shielded downwards vertically through the first magnetic shielding piece (6) and the second shielding piece (601), and the tops of the first magnetic shielding piece (6) and the second shielding piece (601) are connected with the side edges of the monitoring terminal body (1).
  5. 5. The photoelectric direct current cable safety monitoring system according to claim 4, wherein semicircular limiting grooves (602) are formed between every two groups of second shielding sheets (601), and the direct current cable passes through the space between the two limiting grooves (602) on two sides of the mounting frame (2).
  6. 6. The photoelectric direct current cable safety monitoring system according to claim 5, wherein the first magnetic attraction piece (6) and the second shielding piece (601) are of an insulating strip structure.
  7. 7. The system of claim 1, wherein the gateway controller comprises a fixed bracket and a data acquisition interface, the fixed bracket is bolted to the inverter housing, and the data acquisition interface is electrically connected to the inverter junction loop.
  8. 8. The system according to claim 1, wherein the antenna structure of the LoRa communication module is arranged on top of the monitoring terminal body (1) and insulated from the rain cover plate (101).
  9. 9. The system according to claim 1, wherein the wire-controlled air-open cable interface is a waterproof plug terminal and is arranged on the side surface of the monitoring terminal body (1).
  10. 10. The system of claim 1, wherein the system platform issues the command through a communication interface of the gateway controller, the communication interface being RS485 or an ethernet port.

Description

Photoelectric direct current cable safety monitoring system Technical Field The utility model relates to the technical field of safety monitoring of photovoltaic power generation systems, in particular to a photoelectric direct current cable safety monitoring system. Background In the field of safety monitoring of photovoltaic power generation systems, installation, protection and monitoring of photovoltaic direct current cables are critical to stable and efficient operation of the system. But the current technology has significantly shorter plates. The cable fixing adaptability is poor, the specification of the traditional clamp is single, and the traditional clamp is difficult to adapt to various direct current cable diameters in a photovoltaic power station. The clamps are frequently replaced during operation and maintenance, the operation is complicated, and the installation efficiency is greatly reduced. If the clamp is mismatched, the cable can slip and the contact resistance is raised to cause local overheating due to over loosening, and the insulating layer is damaged due to over tightening, so that the leakage risk is increased. The protection and maintenance efficiency is low, the existing protection device is mostly fixed by bolts, and the cable inspection and the fault investigation need special tools to be disassembled, so that time and labor are wasted. And the protection part is separated from the clamp, so that gaps are easy to leave, dust and rainwater are invaded, and cable corrosion is accelerated. The monitoring and response are lagged, the hidden troubles such as poor contact and electric leakage of the lead are difficult to be found in time by the existing system, and the real-time feedback and remote control capability is lacked. The fault handling relies on manual field operation, and the operation and maintenance efficiency is low, and the fault easily spreads. For this purpose, an optoelectronic direct current cable safety monitoring system is proposed. Disclosure of utility model In order to solve the technical problems, the utility model provides a photoelectric direct current cable safety monitoring system. The technical scheme for realizing the purpose of the utility model is that the photoelectric direct current cable safety monitoring system comprises: the monitoring terminal comprises a monitoring terminal body, a pair of concave mounting frames with forward openings are arranged at the bottom of the monitoring terminal body, and a sliding groove, a guide rail assembly, a clamp component and a shielding component are arranged on the inner side of the mounting frames; The gateway controller is arranged at the inverter end, internally provided with a power supply module and a sensor and used for collecting electric parameters of a tandem loop of the inverter; The string monitoring terminal is integrated in the monitoring terminal body, comprises a LoRa communication module and a power supply, and is used for monitoring the electrical parameters of the photovoltaic panel string and communicating with the gateway controller through a LoRa wireless network; The wire control is opened, is electrically connected with the string monitoring terminal through a cable interface and is controlled by the string monitoring terminal to break or close string transmission; the photovoltaic panel string group is connected with the wire control air switch through a direct-current cable; The LoRa communication module of the string monitoring terminal comprises an antenna structure, and the gateway controller is connected with the system platform through a communication interface. Preferably, the guide rail assembly comprises a sliding rod inside the sliding groove, the sliding rod is sleeved with a spring column, the clamp component comprises an upper limit ring connected with the top of the inner side of the installation frame and a lower limit ring arranged below the upper limit ring, a circle is formed between the upper limit ring and the lower limit ring in a surrounding mode, one side of the lower limit ring is connected with a sliding block, the sliding block is sleeved on the rod of the sliding rod in a sliding mode, threaded holes are formed in protruding portions at the front ends of the upper limit ring and the lower limit ring, and the front ends of the upper limit ring and the lower limit ring are connected with fixing bolts and nuts in a threaded mode. Preferably, a rain shielding cover plate with a narrow upper part and a wide lower part is arranged at the top of the monitoring terminal body. Preferably, the shielding component comprises a first magnetic shielding sheet connected with the front side and the rear side of the monitoring terminal body and a second shielding sheet with two groups of mounting frames far away from each other, the front side and the rear side of the monitoring terminal body are transversely provided with one row of the first magnetic shielding sheet, the