Partial discharge detection system of cable drum high-voltage machine current collection box

Abstract

The utility model discloses a partial discharge detection system for a current collection box of a cable drum high-voltage machine, which comprises a high-voltage slip ring box, an accessory box is mounted on the right side of the high-voltage slip ring box, a partial discharge collector is mounted in the accessory box, and a partial discharge collection antenna is mounted on the outer side of the accessory box. According to the utility model, the partial discharge acquisition antenna is arranged at the outer side of the accessory case and is used for receiving wireless signals of the earth electric wave partial discharge temperature and humidity three-in-one sensor and transmitting the wireless signals to the internal production data of the partial discharge acquisition device, and then the partial discharge acquisition device displays the data on the touch control screen through the control circuit, so that the real-time detection and display of the data are realized; the relay communication module is used for relay transmission of signals of the earth electric wave partial discharge temperature and humidity three-in-one sensor, so that the device can synchronously detect internal partial discharge point electricity and temperature and humidity abnormal conditions, and an integrated efficient operation system from sensing to relay to application display is formed. And the potential safety hazard of partial discharge of equipment is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of partial discharge detection of a collector box, in particular to a partial discharge detection system for a collector box of a cable reel high voltage machine. Background Art

[0002] The automated rail crane cable uses high voltage, so it is necessary to detect safety hazards in the cable reel high-voltage collector box. During the operation of the high-voltage collector box, there are differences in the electric field strength of various parts of the high-voltage collector box. Once the electric field strength in a certain area reaches its breakdown strength, discharge will occur in that area. However, the entire discharge process does not run through the two conductors to which the voltage is applied, that is, the discharge does not break down the insulation system. This phenomenon is called local discharge. The high-voltage collector box is in the local discharge stage and is often not recognizable by the naked eye or manual touch. If it is not handled for a long time, the severe discharge area will reach its breakdown strength and a fault will occur. Therefore, regular inspections should be taken.

[0003] Among them, the ground wave detection method is currently a common method, that is, when partial discharge occurs in the insulation layer of the high-voltage collector box, electromagnetic waves will be generated, and the metal shell of the high-voltage collector box will shield a large part of this electromagnetic wave, but a small part will still be transmitted through the joints of the metal shell or the gas-insulated switch liner, and a ground wave will be generated through the outer surface of the metal shell of the equipment to the ground. The range of the ground wave is usually between a few millivolts and a few volts, and the rise time is several nanoseconds. The probe can be set on the outer surface of the switch cabinet in the working state to detect partial discharge activities.

[0004] However, the current ground wave detection method generally only detects electromagnetic waves, but lacks synchronous detection of temperature. The hidden danger of heating inside the high-voltage collector box will also lead to accident hazards caused by insulation damage when the temperature rises significantly. Utility Model Content

[0005] In view of the problems existing in the prior art, the purpose of the utility model is to provide a partial discharge detection system for a cable reel high-voltage machine collector box to solve the background technical problems.

[0006] To achieve the above purpose, the utility model adopts the following technical solution.

[0007] A partial discharge detection system for a cable reel high-voltage machine collector box comprises a high-voltage slip ring box, an accessory box is installed on the right side of the high-voltage slip ring box, a partial discharge collector is installed inside the accessory box, a partial discharge collection antenna is installed outside the accessory box, a ground wave partial discharge temperature and humidity three-in-one sensor is installed inside the high-voltage slip ring box, the ground wave partial discharge temperature and humidity three-in-one sensor is communicatively connected to the partial discharge collector, and the partial discharge collector is connected to a touch control screen via a control line.

[0008] A relay communication module is arranged inside the partial discharge collection antenna, and the ground wave partial discharge temperature and humidity three-in-one sensor is connected to the partial discharge collector through the relay communication module.

[0009] As a further description of the above technical solution: two groups of relay communication modules are arranged inside the partial discharge collection antenna, and the ground wave signal and the temperature and humidity signal of the ground wave partial discharge temperature and humidity three-in-one sensor are independently transmitted through the two groups of relay communication modules.

[0010] As a further description of the above technical solution: the ground wave partial discharge temperature and humidity three-in-one sensor includes a wireless ground wave partial discharge sensor and a wireless temperature and humidity sensor, and the wireless ground wave partial discharge sensor and the wireless temperature and humidity sensor are independently connected to the partial discharge collector through two groups of relay communication modules.

[0011] As a further description of the above technical solution: a magnetic attraction module is installed at the bottom of the partial discharge collection antenna, and the magnetic attraction module is adsorbed and fixedly connected to the outside of the accessory box.

[0012] As a further description of the above technical solution: the touch control screen is communicatively connected to the cloud server, and the cloud server is communicatively connected to the ground master control terminal.

[0013] As a further description of the above technical solution: a limit switch is installed inside the accessory box, and the limit switch is electrically connected to the partial discharge collector.

[0014] Compared with the prior art, the advantages of the present invention are:

[0015] This solution uses the three-in-one ground wave partial discharge temperature and humidity sensor as the perception layer, and relays the signal to the partial discharge collector through the relay layer partial discharge collection antenna. The partial discharge collector transmits the signal to the touch control screen for display, and synchronizes the data to the server and the ground main control terminal, so that the device can realize the simultaneous detection of abnormal internal partial discharge points and temperature and humidity, and form an integrated and efficient operating system from perception to relay to application display, reducing the safety risks of partial discharge of equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the front cross-sectional structure of the installation structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the structure of the partial discharge collection antenna of the utility model;

[0018] Figure 3 It is a schematic diagram of the operating principle of the utility model.

[0019] Description of the numbers in the figure:

[0020] 1. High-voltage slip ring box; 2. Accessory box; 3. Partial discharge collector; 4. Partial discharge collection antenna; 41. Relay communication module; 42. Magnetic suction module; 5. Touch control screen; 6. Limit switch; 7. Ground wave partial discharge temperature and humidity three-in-one sensor; 71. Wireless ground wave partial discharge sensor; 72. Wireless temperature and humidity sensor. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0022] See also Figures 1 to 3 In the utility model, a partial discharge detection system for a cable reel high-voltage machine collector box comprises a high-voltage slip ring box 1, an accessory box 2 is installed on the right side of the high-voltage slip ring box 1, a partial discharge collector 3 is installed inside the accessory box 2, a partial discharge collection antenna 4 is installed outside the accessory box 2, a ground wave partial discharge temperature and humidity three-in-one sensor 7 is installed inside the high-voltage slip ring box 1, the ground wave partial discharge temperature and humidity three-in-one sensor 7 is communicatively connected with the partial discharge collector 3, and the partial discharge collector 3 is connected with a touch control screen 5 through a control line.

[0023] A relay communication module 41 is disposed inside the partial discharge collection antenna 4 , and the ground wave partial discharge temperature and humidity three-in-one sensor 7 is connected to the partial discharge collector 3 through the relay communication module 41 .

[0024] In the utility model, the high-voltage slip ring box 1 is used as the collected subject. When in use, the ground wave partial discharge temperature and humidity three-in-one sensor 7 is independently installed inside the high-voltage slip ring box 1, and then the partial discharge collector 3 is installed inside the accessory box 2, and then the accessory box 2 is installed to the outside of the high-voltage slip ring box 1, and then the partial discharge collection antenna 4 is installed to the outside of the accessory box 2 to receive the wireless signal of the ground wave partial discharge temperature and humidity three-in-one sensor 7, and transmit it to the internal production data of the partial discharge collector 3, and then the partial discharge collector 3 displays the data on the touch control screen 5 through the control line, so as to realize real-time data detection and display, wherein through The relay communication module 41 relays the signal of the ground wave partial discharge temperature and humidity three-in-one sensor 7 to ensure the stability of signal transmission, thereby realizing the device's ability to simultaneously detect internal partial discharge point electricity and temperature and humidity abnormalities, and forming an integrated and efficient operating system from perception to relay to application display, which reduces the safety hazards of partial discharge of equipment and solves the problem that the current ground wave detection method in the prior art generally only detects electromagnetic waves, but lacks synchronous detection of temperature, and the hidden danger of heating inside the high-voltage collector box, which will also lead to the hidden danger of accidents caused by insulation damage when the temperature rise is large.

[0025] See also Figure 2 and Figure 3, wherein: two groups of relay communication modules 41 are arranged inside the partial discharge collection antenna 4, and the ground wave signal and the temperature and humidity signal of the ground wave partial discharge temperature and humidity three-in-one sensor 7 are independently transmitted through the two groups of relay communication modules 41 respectively.

[0026] In the present invention, through two groups of relay communication modules 41 pairs, the ground wave signal and the temperature and humidity signal of the ground wave partial discharge temperature and humidity three-in-one sensor 7 are transmitted independently, thereby improving the signal transmission efficiency.

[0027] See also Figure 3 , wherein: the ground wave partial discharge temperature and humidity three-in-one sensor 7 includes a wireless ground wave partial discharge sensor module 71 and a wireless temperature and humidity sensor module 72, and the wireless ground wave partial discharge sensor module 71 and the wireless temperature and humidity sensor module 72 are independently communicated with the partial discharge collector 3 through two groups of relay communication modules 41 respectively.

[0028] In the utility model, the wireless ground wave partial discharge sensor 71 and the wireless temperature and humidity sensor 72 are used to realize synchronous three-in-one detection and transmission of ground wave partial discharge signals, temperature signals and humidity signals, thereby realizing comprehensive and efficient detection of data inside the high-voltage slip ring box 1.

[0029] See also Figure 2 , wherein: a magnetic attraction module 42 is installed at the bottom of the partial discharge collection antenna 4, and the magnetic attraction module 42 is adsorbed and fixedly connected to the outer side of the accessory box 2.

[0030] In the utility model, the magnetic attraction module 42 facilitates the flexible installation and connection between the partial discharge collection antenna 4 and the accessory box 2, and is also convenient for adjusting the installation position.

[0031] See also Figure 3 , wherein: the touch control screen 5 is connected to the cloud server for communication, and the cloud server is connected to the ground master control terminal for communication.

[0032] In the utility model, the touch control screen 5 is connected to the cloud server in communication, and the cloud server is connected to the ground master control terminal in communication, so that the data can be displayed in real time on the application end, stored through the cloud server, and the ground master control end can realize real-time control and data call.

[0033] See also Figure 1 , wherein: a limit switch 6 is installed inside the accessory box 2 , and the limit switch 6 is electrically connected to the partial discharge collector 3 .

[0034] In the utility model, when the partial discharge collector 3 collects abnormal data, the limit switch 6 can be used to transmit data to the outside and control the limit switch 6 to implement emergency protection operation.

[0035] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A partial discharge detection system for a cable reel high voltage machine collector box, comprising a high voltage slip ring box (1), characterized in that: An accessory box (2) is installed on the right side of the high-voltage slip ring box (1), a partial discharge collector (3) is installed inside the accessory box (2), a partial discharge collection antenna (4) is installed outside the accessory box (2), a ground wave partial discharge temperature and humidity three-in-one sensor (7) is installed inside the high-voltage slip ring box (1), the ground wave partial discharge temperature and humidity three-in-one sensor (7) is communicatively connected with the partial discharge collector (3), and the partial discharge collector (3) is connected to a touch control screen (5) via a control line; A relay communication module (41) is provided inside the partial discharge collection antenna (4), and the ground wave partial discharge temperature and humidity three-in-one sensor (7) is connected to the partial discharge collector (3) through the relay communication module (41).

2. A partial discharge detection system for a cable reel high voltage machine collector box according to claim 1, characterized in that: Two groups of relay communication modules (41) are arranged inside the partial discharge collection antenna (4), and the ground wave signal and the temperature and humidity signal of the ground wave partial discharge temperature and humidity three-in-one sensor (7) are independently transmitted through the two groups of relay communication modules (41).

3. A partial discharge detection system for a cable reel high voltage machine collector box according to claim 2, characterized in that: The ground wave partial discharge temperature and humidity three-in-one sensor (7) comprises a wireless ground wave partial discharge sensor module (71) and a wireless temperature and humidity sensor module (72); the wireless ground wave partial discharge sensor module (71) and the wireless temperature and humidity sensor module (72) are independently connected to the partial discharge collector (3) through two groups of relay communication modules (41).

4. A partial discharge detection system for a cable reel high voltage machine collector box according to claim 1, characterized in that: A magnetic attraction module (42) is installed at the bottom of the partial discharge collection antenna (4), and the magnetic attraction module (42) is adsorbed and fixedly connected to the outside of the accessory box (2).

5. The partial discharge detection system for a cable reel high voltage machine collector box according to claim 1, characterized in that: The touch control screen (5) is connected to a cloud server for communication, and the cloud server is connected to a ground master control terminal for communication.

6. A partial discharge detection system for a cable reel high voltage machine collector box according to claim 1, characterized in that: A limit switch (6) is installed inside the accessory box (2), and the limit switch (6) is electrically connected to the partial discharge collector (3).

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