Intelligent drop-out fuse and monitoring system comprising same

Abstract

This application provides a monitoring system based on an intelligent drop-out fuse, including an insulating support, a fuse tube, a fuse wire, an upper contact mechanism, and a lower contact mechanism. The insulating support includes a skirt section and insulating ends located on the upper and lower sides of the skirt section. A secondary cavity is provided inside the upper insulating end. The skirt section includes two main skirts connected vertically, and a main cavity is located at the connection point of the two main skirts. A voltage and current sensor is installed in the secondary cavity. A metering chip and a wireless communication module are installed in the main cavity. Several communication ports are provided on the outside of the main cavity. The metering chip is electrically connected to the voltage and current sensor, the wireless communication module, and the communication ports. This application can collect voltage and current signals, calculate and output operating parameters through the metering chip, measure the active and reactive energy of each phase, and then transmit the data to a remote location via the wireless communication module. Through real-time monitoring, it can respond to faults more quickly, reduce the damage to equipment caused by faults, and reduce on-site maintenance work.

Description

Technical Field

[0001] This application belongs to the field of drop-out fuse technology, specifically relating to intelligent drop-out fuses and the monitoring system thereof. Background Technology

[0002] Traditional drop-out fuses are widely used overload and short-circuit protection devices in power systems, primarily for outdoor high-voltage distribution lines. Their working principle is to cut off the circuit by melting the fusible element, thereby protecting lines and equipment from damage. However, traditional drop-out fuses have the following shortcomings:

[0003] It can only cut off the circuit by melting the fuse, and cannot provide real-time monitoring information of electrical parameters such as current and voltage, which makes it difficult to meet the needs of modern power systems for equipment status monitoring and fault early warning.

[0004] Lacking intelligent fault diagnosis and remote communication functions, it is impossible to achieve real-time monitoring and remote management of the fuse status. Summary of the Invention

[0005] This application provides an intelligent drop-out fuse and a monitoring system thereof to solve or partially solve the problems mentioned in the background art.

[0006] This application provides an intelligent drop-out fuse, including an insulating support, a fuse tube, a fuse wire, an upper contact mechanism, and a lower contact mechanism. The insulating support includes a skirt portion and insulating ends disposed on the upper and lower sides of the skirt portion. A secondary cavity is disposed inside the upper insulating end. The skirt portion includes two main skirts connected vertically, and a main cavity is disposed at the connection point of the two main skirts.

[0007] The secondary cavity is equipped with a voltage and current sensor, the main cavity is equipped with a metering chip and a wireless communication module, and the outer side of the main cavity is equipped with several communication ports. The metering chip is electrically connected to the voltage and current sensor, the wireless communication module, and the communication ports.

[0008] Preferably, the metering chips of the two fuses are connected via a communication port.

[0009] Preferably, the number of communication ports is one or two.

[0010] Preferably, the wireless communication module is a low-power wireless communication module.

[0011] Preferably, a second umbrella skirt is provided at the horizontal connection between the upper insulating end and the upper contact mechanism and at the horizontal connection between the lower insulating end and the lower contact mechanism;

[0012] A first umbrella skirt is provided at the top of the upper insulating end.

[0013] Preferably, the insulating bracket is integrally die-cast from epoxy resin and rubber, with epoxy resin on the inner side and rubber on the outer side.

[0014] This application also provides an intelligent drop-out fuse monitoring system, comprising: a remote monitoring terminal, several data collectors and several sets of fuse bodies, each set of fuse bodies including the three-phase intelligent drop-out fuses described above.

[0015] The metering chips located in the fuse bodies of phases A and C are connected to the metering chip of the fuse body of phase B through a communication port. The metering chip of phase B is connected to the data acquisition unit through a wireless communication module. The data acquisition unit is connected to the remote monitoring terminal through an RS485 communication line.

[0016] Compared with the prior art, the beneficial effects of this application are as follows:

[0017] (1) The intelligent drop-out fuse of this application integrates metering chips, voltage and current sensors and wireless communication modules in the main cavity and the auxiliary cavity. It can collect phase voltage and phase current signals, calculate and output the operating parameters such as voltage, current and power of each phase through the metering chip, measure the active and reactive power of each phase, and then transmit them to the remote end through the wireless communication module for remote monitoring and management by operation and maintenance personnel. Through real-time monitoring, it can respond to faults more quickly, reduce the damage of faults to equipment, and reduce on-site maintenance work.

[0018] (2) The monitoring system of this application can integrate data into the B-phase fuse body through the design of the communication interface, which can reduce the setup cost and computing cost of components such as the wireless communication module of A-phase and C-phase, and reduce the economic pressure of deployment.

[0019] (3) The design of the first and second umbrella skirts in this application increases the creepage distance and strengthens the insulation performance. The insulation bracket is integrally die-cast with epoxy resin and rubber. The metering chip, voltage and current sensor and wireless communication module are encapsulated inside the epoxy resin, which strengthens the insulation performance, mechanical performance and impact resistance of this application, and makes the operation of the electrical components more stable. Attached Figure Description

[0020] The present application will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 This is a schematic diagram of the overall structure of this application.

[0022] Figure 2 This is a schematic diagram of the system composition of this application.

[0023] Figure 3 This is an enlarged diagram of the system connections in this application.

[0024] In the picture:

[0025] 1. Insulating bracket, 2. Fusible tube, 3. Fusible wire, 4. Pull ring, 5. Upper contact mechanism, 6. Lower contact mechanism, 7. Mounting support, 11. Insulating end, 12. Main umbrella skirt, 13. Main cavity, 14. First auxiliary umbrella skirt, 15. Second auxiliary umbrella skirt, 16. Communication port;

[0026] 100. Fuse body; 200. Remote monitoring terminal; 300. Data acquisition unit. Detailed Implementation

[0027] The specification and claims use certain terms to refer to specific components. Those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.

[0028] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0029] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0030] Example 1

[0031] like Figure 1As shown, this application provides an intelligent drop-out fuse, including an insulating support 1, a fuse tube 2, a fuse wire 3, an upper contact mechanism 5, and a lower contact mechanism 6. The insulating support 1 includes a skirt portion and insulating ends 11 disposed on the upper and lower sides of the skirt portion. A secondary cavity is disposed inside the upper insulating end 11. The skirt portion includes two main skirts 12 connected vertically. A main cavity 13 is disposed at the connection of the two main skirts 12. A voltage and current sensor is disposed inside the secondary cavity. A metering chip and a wireless communication module are disposed inside the main cavity 13. Several communication ports 16 are disposed on the outside of the main cavity 13. The metering chip is electrically connected to the voltage and current sensor, the wireless communication module, and the communication ports 16.

[0032] The fuse tube 2 serves as insulation, protection, and arc extinguishing. The fuse wire 3 is installed inside the fuse tube 2. When an overload or short circuit fault occurs in the circuit, the fuse wire 3 will melt rapidly due to excessive current, thereby cutting off the circuit and providing protection. The lower part of the fuse tube 2 is hinged to the lower contact mechanism 6, and the upper part of the fuse tube 2 is movably connected to the upper contact mechanism 5. The fuse tube 2 is also provided with a pull ring 4 for pulling the fuse tube 2. The umbrella skirt of the insulating bracket 1 is also provided with an installation support 7 for fixing this application. A sampling access contact is provided on the outside of the upper insulating end 11. The specific structure of the fuse tube 2, fuse wire 3, upper contact mechanism 5, and lower contact mechanism 6 is a conventional design in the field of drop-out fuses, and will not be described in detail in this application.

[0033] The intelligent drop-out fuse of this application integrates a metering chip, voltage and current sensors, and a wireless communication module in the main cavity 13 and the auxiliary cavity. It can collect phase voltage and phase current signals, calculate and output operating parameters such as voltage, current, and power of each phase through the metering chip, measure the active and reactive energy of each phase, and then transmit them to a remote location via the wireless communication module for remote monitoring and management by operation and maintenance personnel. Through real-time monitoring and intelligent control, it can respond to faults more quickly, reduce the damage to equipment caused by faults, and reduce on-site maintenance work.

[0034] Specifically, such as Figure 2 ,and Figure 3 As shown, in actual use, the metering chips of the two fuses are connected via communication port 16, and the number of communication ports 16 is one or two.

[0035] Specifically, the wireless communication module is a low-power wireless communication module, which has low power consumption and anti-interference capabilities, and is suitable for the application scenarios of this application.

[0036] Specifically, a second skirt 15 is provided at the horizontal connection between the upper insulating end 11 and the upper contact mechanism 5, and at the horizontal connection between the lower insulating end 11 and the lower contact mechanism 6. A first skirt 14 is provided at the top of the upper insulating end 11, which increases the creepage distance, strengthens the insulation performance, and helps to strengthen the protection of the main cavity 13 and the secondary cavity.

[0037] Specifically, the insulating bracket 1 is made of epoxy resin injection molding, which has good mechanical properties and impact resistance. It is also lighter than traditional ceramic materials and has good electrical insulation properties, ensuring the safety and stability of power transmission. Silicone rubber is then injected into the surface of the injection-molded resin body, giving it good chemical corrosion resistance, weather resistance and ozone resistance. Voltage and current sensors and other components are encapsulated inside epoxy resin, making its operation more stable and the equipment more reliable.

[0038] like Figure 2 and Figure 3 As shown, based on the above-mentioned intelligent drop-out fuse, this application also provides an intelligent drop-out fuse monitoring system, comprising: a remote monitoring terminal 200, several data collectors 300, and several sets of fuse bodies 100. Each set of fuse bodies 100 includes three-phase intelligent drop-out fuses as described above. The metering chips of the fuse bodies 100 located in phases A and C are connected to the metering chip of the fuse body 100 in phase B through a communication port 16. The metering chip in phase B is connected to the data collectors 300 through a wireless communication module. The data collectors 300 are connected to the remote monitoring terminal 200 through an RS485 communication line.

[0039] Preferably, the fuse body 100 on phases A and C reduces the setting of metering chips and wireless communication modules, and only sets an integrated small signal voltage and current sensor. The voltage and current sensor is connected to phase B through communication port 16 and aviation cable for metering, calculation protection and communication.

[0040] The data acquisition device 300 and the remote monitoring terminal 200 are industrial computer equipment.

[0041] The intelligent drop-out fuse of this application realizes functions such as real-time monitoring and fault diagnosis of the drop-out fuse, and can promptly detect overload or short-circuit faults in the circuit. It can communicate with the remote monitoring terminal 200 through the wireless communication module, which facilitates remote monitoring of the fuse. It has the advantages of simple structure, complete functions, high degree of intelligence and high reliability, and can be widely used in the protection of outdoor power distribution lines in modern power systems.

[0042] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.

Claims

1. An intelligent drop-out fuse, comprising an insulating support (1), a fuse tube (2), a fuse wire (3), an upper contact mechanism (5), and a lower contact mechanism (6), characterized in that: The insulating support (1) includes a skirt part and insulating ends (11) disposed on the upper and lower sides of the skirt part. The upper insulating end (11) is provided with a secondary cavity. The skirt part includes two main skirts (12) connected vertically. A main cavity (13) is provided at the connection of the two main skirts (12). The secondary cavity is equipped with a voltage and current sensor, the main cavity (13) is equipped with a metering chip and a wireless communication module, and a number of communication ports (16) are provided on the outside of the main cavity (13). The metering chip is electrically connected to the voltage and current sensor, the wireless communication module, and the communication ports (16).

2. The intelligent drop-out fuse according to claim 1, characterized in that: The metering chips of the two fuses are connected via communication port (16).

3. The intelligent drop-out fuse according to claim 2, characterized in that: The number of communication ports (16) is one or two.

4. The intelligent drop-out fuse according to claim 1, characterized in that: The wireless communication module is a low-power wireless communication module.

5. The intelligent drop-out fuse according to claim 1, characterized in that: A second umbrella skirt (15) is provided at the horizontal connection between the upper insulating end (11) and the upper contact mechanism (5) and at the horizontal connection between the lower insulating end (11) and the lower contact mechanism (6); A first skirt (14) is provided on the top of the upper insulating end (11).

6. The intelligent drop-out fuse according to claim 1, characterized in that: The insulating bracket (1) is integrally die-cast from epoxy resin and rubber, with epoxy resin on the inner side and rubber on the outer side.

7. An intelligent drop-out fuse monitoring system, characterized in that, include: The system comprises a remote monitoring terminal (200), several data collectors (300), and several sets of fuse bodies (100), each set of fuse bodies (100) including a three-phase intelligent drop-out fuse as described in any one of claims 1-6; The metering chip of the fuse body (100) located in phase A and phase C is connected to the metering chip of the fuse body (100) in phase B through the communication port (16). The metering chip of phase B is connected to the collector (300) through the wireless communication module. The collector (300) is connected to the remote monitoring terminal (200) through the RS485 communication line.

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