Relay protection pressing plate state on-line monitoring system

Abstract

The invention provides a relay protection pressing plate state on-line monitoring system. The relay protection pressing plate state on-line monitoring system comprises a Hall sensor, a pressing plate detector, a pressing plate management host, a network switch, a 5G communication module and a five-prevention system. According to the relay protection pressing plate state on-line monitoring system provided by the invention, the touch plate is matched with the magnet and the Hall sensor, so that remote on-line monitoring of the state of the pressing plate of a relay protection device is realized, automatic recording of the state change of the protection pressing plate and automatic correction of'inconsistent alarm 'of the state of the pressing plate can be realized, and the working efficiency is improved. The microcomputer five-prevention system is combined to perform functions of anti-error logic judgment and the like, so that the automatic monitoring capability of the protection device pressing plate is greatly improved, the probability that personnel inspect and check and mistakenly put and withdraw the protection device pressing plate is reduced, the labor force of field personnel is saved, and the risk that the protection device pressing plate is put and withdrawn mistakenly is managed and controlled; moreover, the structure is light, simple and reliable, and the on-off position monitoring of the pressing plates of various protection devices can be realized.

Description

Technical Field

[0001] This invention relates to the field of relay protection, and more particularly to an online monitoring system for the status of relay protection pressure plates. Background Technology

[0002] With the continuous improvement of equipment monitoring and network communication technologies, the requirements for equipment safety management at production sites are gradually increasing, and unmanned or minimally staffed shift modes are becoming more widespread. This has led to the inevitable trend of intelligent and smart power plant construction. Traditional relay protection devices only connect the protection switch status to the protection device itself. However, considering the safety and reliability of protection devices, power systems strictly prohibit connecting them to other systems via network. Currently, the status of the protection switches in power plants and substations can only be verified manually on-site. In the context of automation, intelligence, and smart technology development, this solution aims to achieve online monitoring of the protection switch status without altering the existing protection devices by constructing a complete online monitoring system.

[0003] Now, the protection device's own pressure plate status monitoring function will be utilized, and the existing dedicated communication network will be used to gather information from various protection devices to the relay protection information management substation platform. The relay protection information management substation will then monitor the pressure plate status of the protection devices online.

[0004] However, monitoring the status of the protection device's pressure plates through the protection information management substation is currently limited by the device's functionality. The pressure plate status in the protection device's input data only collects data on the functional pressure plates and does not monitor the status of the protection device's output pressure plates. Furthermore, the protection information management substation, as a monitoring device that transmits data to the power grid dispatch center, is fixedly installed in the protection room of each plant and cannot be extended to other locations within the plant for monitoring. Although the functional pressure plate status of the protection device can be remotely monitored through the protection information management substation, the status of the protection device's output pressure plates can only be monitored by personnel through on-site visual inspection and registration.

[0005] Therefore, it is necessary to provide an online monitoring system for the status of relay protection pressure plates to solve the above-mentioned technical problems. Summary of the Invention

[0006] This invention provides an online monitoring system for the status of relay protection pressure plates, which solves the problem that the status of the output pressure plates of protection devices can only be monitored by personnel through on-site visual inspection and registration.

[0007] To solve the above-mentioned technical problems, the present invention provides an online monitoring system for the status of a relay protection pressure plate, comprising: a Hall sensor, a pressure plate detector, a pressure plate management host, a network switch, a 5G communication module, and a five-prevention system;

[0008] The Hall sensor is bidirectionally connected to the pressure plate detector, the pressure plate management host is bidirectionally connected to the pressure plate detector, the network switch is bidirectionally connected to the pressure plate management host, the 5G communication module is bidirectionally connected to the network switch, and the five-proof system is bidirectionally connected to the 5G communication module.

[0009] The detection end of the Hall sensor is equipped with a protection device.

[0010] Preferably, the protection devices of each protection panel are connected in series with a pressure plate detector through a single Hall sensor 5.

[0011] Preferably, the pressure plate detectors between each panel communicate in series via RS485 and then connect to the pressure plate management host.

[0012] Preferably, the pressure plate management host is connected to the network switch and the network switch is connected to the 5G communication module via a network cable.

[0013] Preferably, the Hall sensor is used to detect the "on / off" status of the protection device.

[0014] Preferably, the network switch is used for data transmission between the pressure plate management host and the 5G communication module.

[0015] Preferably, the protective device includes a pressure plate, a contact plate, and a magnet, wherein the contact plate is disposed on the surface of the pressure plate, and the magnet is fixedly installed inside the contact plate.

[0016] Preferably, the surface of the contact plate is provided with a fixing device, which is used to fix the contact plate and the pressure plate.

[0017] Preferably, the fixing device is a buckle, which is disposed inside the contact plate.

[0018] Preferably, the magnet is fixedly installed inside both the touch plate and the Hall sensor.

[0019] Compared with related technologies, the online monitoring system for relay protection pressure plate status provided by the present invention has the following advantages:

[0020] This invention provides an online monitoring system for the status of relay protection plates. Through a contact plate combined with a magnet and a Hall effect sensor, it enables remote online monitoring of the status of relay protection device plates. It can automatically record changes in the status of the protection plates, automatically verify the plate status with "inconsistency alarms," ​​and perform error-prevention logic judgments in conjunction with a microcomputer-based five-prevention system. This significantly improves the automatic monitoring capability of protection device plates, reduces the probability of personnel inspection and verification, and accidental activation or deactivation of protection device plates. It saves on-site labor, controls the risk of accidental activation or deactivation of protection device plates, and features a lightweight, simple, and reliable structure for monitoring the activation and deactivation positions of various protection device plates. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a preferred embodiment of an online monitoring system for the status of a relay protection pressure plate provided by the present invention;

[0022] Figure 2 for Figure 1 The diagram shows a series connection of the pressure plate detectors.

[0023] Figure 3 for Figure 1 The diagram shown is a structural schematic of the pressure plate detector.

[0024] Figure 4 for Figure 1 The diagram shows the working status of the pressure plate detector.

[0025] The following are the labels in the diagram: 1. Pressure plate, 2. Fixing device, 3. Contact plate, 4. Magnet, 5. Hall sensor. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0027] Please refer to the following: Figure 1 , Figure 2 , Figure 3 and Figure 4 ,in, Figure 1 This is a schematic diagram of a preferred embodiment of an online monitoring system for the status of a relay protection pressure plate provided by the present invention; Figure 2 for Figure 1 The diagram shows a series connection of the pressure plate detectors. Figure 3 for Figure 1 The diagram shown is a structural schematic of the pressure plate detector. Figure 4 for Figure 1 The diagram shows the working status of the pressure plate detector. An online monitoring system for the status of a relay protection pressure plate includes: a Hall sensor 5, a pressure plate detector, a pressure plate management host, a network switch, a 5G communication module, and a five-prevention system.

[0028] The Hall sensor 5 is bidirectionally connected to the pressure plate detector, the pressure plate management host is bidirectionally connected to the pressure plate detector, the network switch is bidirectionally connected to the pressure plate management host, the 5G communication module is bidirectionally connected to the network switch, and the five-prevention system is bidirectionally connected to the 5G communication module.

[0029] The detection end of the Hall sensor 5 is equipped with a protection device.

[0030] The Hall sensor 5 is the most compact, convenient and reliable position detection device. By adding an auxiliary contact plate 3 to the original pressure plate of the protection device, the Hall sensor 5 is installed at the top of the pressure plate 1. When the pressure plate 1 is engaged, the contact plate 3 is close to the Hall sensor. When the pressure plate 1 is disengaged, the contact plate 3 is away from the Hall sensor 5. The engagement and disengagement status of the pressure plate 1 of the protection device is identified by the principle of the Hall sensor 5.

[0031] Each protection panel's protection device's pressure plate 1 is connected to a pressure plate detector via a single Hall sensor 5 in series. The pressure plate detectors between each panel communicate in series via RS485 and then connect to the pressure plate management host. The pressure plate management host forms a local unit by connecting to a 5G communication module. At the receiving end, the online monitoring system backend of the protection device's pressure plate 1 connects to the 5G communication module to receive local data and send system commands.

[0032] It can be set up as an independent online monitoring system, or as a fault prevention unit for the pressure plate 1 of the microcomputer five-proof system. The online monitoring system can continuously communicate to monitor the activation and deactivation status of the protection pressure plate in real time. It can also compare the status of each protection panel pressure plate stored by the background server with the actual status of the pressure plate of the field protection device to realize the fault prevention alarm of the pressure plate.

[0033] The five-prevention system uses multiple methods, including mechanical interlocking, electrical interlocking, and intelligent monitoring, to physically and logically prevent five typical types of misoperation, such as the following problems;

[0034] Preventing accidental opening and closing of circuit breakers: Circuit breakers are key devices for controlling the opening and closing of circuits. It is forbidden to close or open them arbitrarily without authorization or confirmation of the operating conditions.

[0035] Prevent opening or closing the disconnect switch under load: The disconnect switch has no arc extinguishing capability and can only be operated under "no load" or "low current" conditions. It is forbidden to open or close it when the circuit is under load, otherwise an electric arc will be generated and an explosion may occur.

[0036] Prevent grounding wires from being connected to live equipment: Grounding wires are a safety guarantee during maintenance. It is forbidden to connect grounding wires while the equipment is still energized, otherwise it will cause a three-phase short circuit, burn out the equipment, or even cause electric shock.

[0037] Prevent closing circuit breakers with the grounding wire connected: After maintenance, the grounding wire must be removed before power can be restored. It is forbidden to close the circuit breaker without removing the grounding wire, otherwise it will cause a short circuit fault in the power grid.

[0038] Preventing accidental entry into energized compartments: Energized compartments are areas where equipment is energized. Maintenance personnel are prohibited from entering these areas without power off and without verifying that the equipment is energized, in order to avoid electric shock.

[0039] The 5G communication module is a hardware module that integrates core components such as 5G radio frequency chips, baseband chips, storage units, and antenna interfaces to enable high-speed, low-latency, wide-connectivity, and long-distance wireless communication transmission of data.

[0040] The pressure plate detector uses Hall effect sensors to automatically determine whether the pressure plate is in an "engaged," "disengaged," or intermediate state such as "not fully closed," "loose," or "abnormally displaced." This avoids misjudgments caused by visual fatigue or misidentification of markings during manual inspections. The detection accuracy is down to the millisecond level. The online detector can monitor continuously 24 hours a day. If the pressure plate exhibits risky conditions such as "false engagement / disengagement," "vibration loosening," or "abnormal bending," it immediately issues an audible and visual alarm or remote signaling notification through the backend system, allowing maintenance personnel to handle the situation immediately. This prevents protection failures or malfunctions due to abnormal pressure plate status, which could lead to power grid accidents. The detector automatically records the status change log of pressure plate 1, including information such as "operator, operation time, original status, and new status," forming traceable historical data. Maintenance personnel can query past statuses through the backend, facilitating fault diagnosis and responsibility identification, and providing data support for power grid condition analysis, eliminating the need for manual recording.

[0041] The pressure plate management host is used for data aggregation, status analysis, command issuance, alarm linkage, and data storage of pressure plate detector data.

[0042] The protection devices of each protection panel are connected in series with a pressure plate detector through a single Hall sensor 5.

[0043] The pressure plate detectors of each panel communicate in series via RS485 and then connect to the pressure plate management host.

[0044] The pressure plate management host is connected to the network switch and the network switch is connected to the 5G communication module via network cables.

[0045] The Hall sensor 5 is used to detect the "on / off" status of the protection device.

[0046] The core of Hall sensor 5 is the "Hall effect": when the sensor is in a magnetic field, it will output a specific electrical signal; when the magnetic field disappears or changes, the electrical signal will also change synchronously. After the pressure plate 1 drives the contact plate 3 connected to the magnet 4 to rotate to a certain position, the magnet 4 approaches the Hall sensor 5, and the sensor is within the magnetic field coverage area, outputting a high-level signal, representing the "engaged" state.

[0047] When the pressure plate 1 rotates, it causes the contact plate 3 to move away from the Hall sensor. The sensor then leaves the magnetic field and outputs a low-level signal, indicating the "exit" state.

[0048] The high and low level digital signals output by Hall sensor 5 are transmitted to the pressure plate detector, and then sequentially transmitted to the pressure plate management host, network switch, and 5G communication module. Finally, the signals are transmitted to the five-prevention system for monitoring, and finally presented to the operation and maintenance personnel in an intuitive "on / off" form. This greatly improves the automatic monitoring capability of the protection device pressure plate 1, reduces the probability of personnel inspection and verification and accidental activation or deactivation of the protection device pressure plate, saves on-site personnel labor, and controls the risk of accidental activation or deactivation of the protection device pressure plate. Moreover, the structure is lightweight, simple, and reliable, enabling the monitoring of the activation and deactivation positions of various protection device pressure plates.

[0049] The network switch is used for data transmission between the pressure plate management host and the 5G communication module.

[0050] Network switches are used to build the "data transmission channel" within the system, connecting the front-end detection equipment, the intermediate management host, and the back-end platform as "intelligent data routers." By accurately forwarding data, they enable efficient and stable communication between devices, ensuring that the entire monitoring system "does not lose data, transmits smoothly, and coordinates in a timely manner."

[0051] The protective device includes a pressure plate 1, a contact plate 3, and a magnet 4. The contact plate 3 is disposed on the surface of the pressure plate 1, and the magnet 4 is fixedly installed inside the contact plate 3.

[0052] The pressure plate of the protection device is the core external control component of relay protection devices such as line protection, transformer protection, and bus protection. It is an electrical switch that can be manually switched on and off. By "connecting / disconnecting" the corresponding secondary circuit, the protection function can be "engaged" or "disengaged".

[0053] The surface of the contact plate 3 is provided with a fixing device 2, which is used to fix the contact plate 3 and the pressure plate 1.

[0054] The fixing device 2 is a buckle, which is located inside the contact plate 3.

[0055] The clip is used to secure the contact plate 3 and the pressure plate 1.

[0056] In other embodiments, the fixing device 2 may also be in the form of a rivet, bolt, etc., for fixing the contact plate 3 and the pressure plate 1.

[0057] The magnet 4 is fixedly installed inside both the contact plate 3 and the Hall sensor 5.

[0058] The status monitoring function of the pressure plate 1 of the protection device enables data collection from the local unit. Then, a network that is easy to communicate with is built to enable the transmission and interaction of local data with the server backend. Finally, an online monitoring system backend is built according to the functional requirements to realize the various functions of the system.

[0059] The working principle of the online monitoring system for the status of relay protection pressure plates provided by this invention is as follows:

[0060] In use, the pressure plate 1 moves to one side, causing the contact plate 4 to move as well. When the magnet 4 of the contact plate 4 comes into contact with the magnet 4 of the Hall sensor 5, the Hall sensor 5 transmits the detected data to the pressure plate detector, and then transmits it sequentially to the pressure plate management host, network switch, 5G communication module, and finally to the five-proof system for monitoring.

[0061] Compared with related technologies, the online monitoring system for relay protection pressure plate status provided by the present invention has the following advantages:

[0062] This invention provides an online monitoring system for the status of relay protection pressure plates. Through a contact plate 3, a magnet 4, and a Hall sensor 5, it enables remote online monitoring of the status of relay protection device pressure plates 1. It can automatically record changes in the status of the protection pressure plates, automatically verify the pressure plate status with "inconsistency alarms," ​​and perform error-prevention logic judgments in conjunction with a microcomputer-based five-prevention system. This significantly improves the automatic monitoring capability of the protection device pressure plates 1, reduces the probability of personnel inspection and verification, and accidental activation or deactivation of protection device pressure plates. It saves on-site labor, controls the risk of accidental activation or deactivation of protection device pressure plates, and features a lightweight, simple, and reliable structure for monitoring the activation and deactivation positions of various protection device pressure plates.

[0063] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. An online monitoring system for the status of a relay protection pressure plate, characterized in that, include: Hall effect sensors, pressure plate detectors, pressure plate management host, network switches, 5G communication modules, and five-proof systems; The Hall sensor is bidirectionally connected to the pressure plate detector, the pressure plate management host is bidirectionally connected to the pressure plate detector, the network switch is bidirectionally connected to the pressure plate management host, the 5G communication module is bidirectionally connected to the network switch, and the five-prevention system is bidirectionally connected to the 5G communication module. The detection end of the Hall sensor 5 is equipped with a protection device.

2. The online monitoring system for the status of a relay protection pressure plate according to claim 1, characterized in that, The protection devices of each protection panel are connected in series with a pressure plate detector through a single Hall sensor 5.

3. The online monitoring system for the status of a relay protection pressure plate according to claim 2, characterized in that, The pressure plate detectors of each panel communicate in series via RS485 and then connect to the pressure plate management host.

4. The online monitoring system for the status of a relay protection pressure plate according to claim 3, characterized in that, The pressure plate management host is connected to the network switch and the network switch is connected to the 5G communication module via network cables.

5. The online monitoring system for the status of a relay protection pressure plate according to claim 1, characterized in that, The Hall sensor is used to detect the "on / off" status of the protection device.

6. The online monitoring system for the status of a relay protection pressure plate according to claim 1, characterized in that, The network switch is used for data transmission between the pressure plate management host and the 5G communication module.

7. The online monitoring system for the status of a relay protection pressure plate according to claim 1, characterized in that, The protective device includes a pressure plate, a contact plate, and a magnet. The contact plate is disposed on the surface of the pressure plate, and the magnet is fixedly installed inside the contact plate.

8. The online monitoring system for the status of a relay protection pressure plate according to claim 7, characterized in that, The surface of the contact plate is provided with a fixing device, which is used to fix the contact plate and the pressure plate.

9. The online monitoring system for the status of a relay protection pressure plate according to claim 8, characterized in that, The fixing device is a buckle, which is located inside the contact plate.

10. The online monitoring system for the status of a relay protection pressure plate according to claim 7, characterized in that, The magnet is fixedly installed inside both the contact plate and the Hall sensor.

Images