Power supply state monitoring device

Abstract

The utility model discloses a power supply state monitoring device, which relates to the technical field of railway power supplies and comprises a main power supply, a standby power supply, a through line monitoring module, a rural power grid line monitoring module, a photoelectric isolation module, a PLC (programmable logic controller), a voice module and a wireless communication module. When the main power grid and the standby power grid have phase loss or power failure faults, the power supply state monitoring device immediately sends out an alarm signal, broadcasts the power failure or phase loss faults of one path of power through voice, and sends short messages and calls to managers and maintainers in the first time to inform the field circuit faults. Management personnel are ensured to organize maintenance in advance, and the influence on railway transportation and safety production caused by power failure of the main power grid and the standby power grid due to untimely maintenance organization is effectively prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of railway power supply, in particular to a power supply status monitoring device. Background Art

[0002] At present, in order to ensure the normal operation of the railway and prevent the power grid from being cut off or lacking a phase, which may have a certain impact on railway transportation, a dual-grid circuit is configured. Once a power grid fails, the grid will automatically switch to the other grid to ensure uninterrupted power supply. However, in actual work, although the equipment automatically switches to the backup grid when the main power grid fails, it may happen that the management personnel cannot detect the power outage of the main grid in time and organize maintenance in time. Once the backup grid also suffers a power outage or phase loss in subsequent work, the equipment is completely paralyzed and cannot work normally, which has a serious impact on railway transportation and safe production. Sometimes the backup power grid fails first and the power outage is not discovered in time for maintenance. When the main power grid suddenly loses power or loses a phase, the equipment cannot be switched because the backup power grid is already in a power outage, which also has serious consequences for transportation organization and production safety. In July 2024, when the crossing guardrail was running downward to intercept passing vehicles, the through line suddenly lost power, and the guardrail was suspended in mid-air and could not move up or down. The train was about to pass through the crossing, and the ground vehicles could not stop it. The crossing worker decisively issued an emergency stop order to stop the train. Although no crossing safety accident occurred, it caused a certain impact on transportation safety.

[0003] Currently, railway crossings and machine rooms are powered by two power supplies, each with only an automatic power switchover device installed. No power status monitoring device is installed. Only one or two power automatic switchover devices are installed. If a backup power failure cannot be detected immediately, when the main power supply fails, the backup power supply will be switched to the backup power supply. Because the backup power failure was not discovered and repaired in time, the power switchover will fail, affecting the normal power supply of equipment and significantly impacting traffic operations. Each such failure can result in losses of approximately 20,000 yuan and may even result in personal injury, a loss that is incalculable. Therefore, a power status monitoring device has been developed to address this issue. Utility Model Content

[0004] The utility model provides a power supply status monitoring device, which solves the technical problems in the background technology.

[0005] In order to solve the above technical problems, the utility model provides a power status monitoring device, which includes a main power supply, a backup power supply, a through-line monitoring module, a rural network line monitoring module, a photoelectric isolation module, a PLC programmable controller, a voice module and a wireless communication module;

[0006] A through-line monitoring module, wherein the wiring terminals of the through-line monitoring module are connected to the main power supply;

[0007] A rural power line monitoring module, wherein the wiring terminals of the rural power line monitoring module are connected to a backup power supply;

[0008] The output ends of the through-line monitoring module and the rural network line monitoring module are connected to the photoelectric isolation module, and the photoelectric isolation module converts the output information of the through-line monitoring module and the rural network line monitoring module into a switching signal after passing through the photoelectric isolation module;

[0009] A PLC programmable controller, wherein the output end of the photoelectric isolation module is connected to the PLC programmable controller, and the PLC programmable controller outputs a control signal according to a predetermined program after receiving the light-on / off signal of the photoelectric isolation module;

[0010] A voice module, wherein the output end of the PLC programmable controller is connected to the voice module;

[0011] There are two wireless communication modules, which respectively receive signals from the through-line monitoring module and the rural network line monitoring module and transmit them to the server.

[0012] Preferably, it further comprises a speaker I and a speaker II, the output end of the voice module is connected to the speaker I and the speaker II, the speaker I is located at the site of the on-site duty personnel, and the speaker II is located at the site of the remote administrator.

[0013] Preferably, the server stores the control signal after receiving it, and notifies the on-site duty personnel, remote administrators and preset management personnel of the control signal through a combination of WeChat, text messages and telephone calls.

[0014] Compared with related technologies, the power supply status monitoring device provided by the present invention has the following beneficial effects:

[0015] The utility model provides a power supply status monitoring device. When a phase loss or power outage occurs in the main or backup power grid, the power supply status monitoring device immediately sends an alarm signal, broadcasts a voice report that a power outage or phase loss occurs in a certain item of a certain line, and immediately sends text messages and calls to the management and maintenance personnel to inform them of the on-site circuit fault, ensuring that the management personnel organize maintenance in advance, and effectively preventing the main and backup power grids from being affected by power outages due to untimely maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Numbers in the figure: 1. Main power supply; 2. Backup power supply; 3. Through-line monitoring module; 4. Rural power line monitoring module; 5. Wireless communication module; 6. Optoelectronic isolation module; 7. PLC programmable controller; 8. Voice module; 9. Audio I; 10. Audio II. DETAILED DESCRIPTION

[0018] Example, by Figure 1 The utility model includes a through-line monitoring module 3, an agricultural network line monitoring module 4, a photoelectric isolation module 6, a PLC programmable controller 7, a voice module 8 and a wireless communication module 5.

[0019] The through-line monitoring module 3 has its terminals connected to the main power supply 1; the through-line is a railway power through-line, which mainly refers to a 10kV or 35kV power line connecting two adjacent transformers and distribution stations along the railway.

[0020] The rural power line monitoring module 4 has its connection terminals connected to a backup power supply; the rural power line is a line system that provides power transmission for civilian production and living electricity.

[0021] The output terminals of the through-line monitoring module 3 and the rural power line monitoring module 4 are connected to the photoelectric isolation module 6. The photoelectric isolation module 6 converts the output information of the through-line monitoring module 3 and the rural power line monitoring module 4 into a switching signal after passing through the photoelectric isolation module 6. The photoelectric isolation module 6 mainly consists of two parts: a light source (such as a light-emitting diode) and a light receiver (such as a phototransistor). When a signal is input to the input terminal, the light source emits light, which then strikes the light receiver. The light receiver generates an electrical signal output corresponding to the changes in the received light intensity. Because the input and output are transmitted via optical signals rather than a direct electrical connection, electrical isolation is achieved.

[0022] PLC programmable controller 7, the output end of the photoelectric isolation module 6 is connected to the PLC programmable controller 7, and the PLC programmable controller 7 receives the light-on signal of the photoelectric isolation module 6 and outputs a control signal according to a predetermined program;

[0023] A voice module 8, wherein the output end of the PLC programmable controller 7 is connected to the voice module 8;

[0024] There are two wireless communication modules 5 , which respectively receive signals from the through-line monitoring module 3 and the rural network line monitoring module 4 and transmit them to the server.

[0025] It also includes speakers I 9 and speakers II 10. The output end of the voice module 8 is connected to the speakers I 9 and speakers II 10. The speaker I 9 is located at the site of the on-site duty personnel, and the speaker II 10 is located at the site of the remote administrator.

[0026] The server stores the control signal after receiving it, and notifies the on-site duty personnel, remote administrators and preset management personnel of the control signal through a combination of WeChat, text messages and telephone calls.

[0027] In this embodiment, the through-line monitoring module 3 and the rural power line monitoring module 4 both use the power supply voltage detection method to detect the power supply status. When the detected power supply voltage changes, such as when the voltage value is lower than the set voltage, the monitoring point voltage jumps to a low potential, and the control transistor inputs a low potential trigger signal to the input end of the photoelectric isolation module. After isolation by the photoelectric isolation module, the voltage signal is converted into a switch signal, sent to the PLC programmable controller 7 and executed according to the program instructions, driving the voice module to control the speakers I 9 and II 10 to issue corresponding phase loss and power outage voice broadcasts, and drive the wireless communication module 5 to call or send a fault repair information to the manager's mobile phone, notifying management personnel and on-site personnel to organize repairs in time to avoid affecting transportation production when the backup power supply fails.

[0028] Working principle: The biggest advantage of this utility model is that it makes full use of the power supply voltage variation characteristics. After detecting that the voltage exceeds the specified limit, the monitoring module outputs information that is converted into a switch signal after passing through the photoelectric isolation module 6, ensuring complete isolation between input and output. After receiving the relevant instructions, the PLC programmable controller 7 executes according to the established procedures, outputs the corresponding voice alarm and WeChat, SMS, and telephone comprehensive notification methods, notifies on-site duty personnel, remote administrators and preset management personnel, so as to facilitate timely organization of maintenance and early warning.

Claims

1. A power status monitoring device, comprising a main power supply, a backup power supply, a through-line monitoring module, a rural power line monitoring module, a photoelectric isolation module, a PLC programmable controller, a voice module, and a wireless communication module, characterized in that: A through-line monitoring module, wherein the wiring terminals of the through-line monitoring module are connected to the main power supply; A rural power line monitoring module, wherein the wiring terminals of the rural power line monitoring module are connected to a backup power supply; The output ends of the through-line monitoring module and the rural network line monitoring module are connected to the photoelectric isolation module, and the photoelectric isolation module converts the output information of the through-line monitoring module and the rural network line monitoring module into a switching signal after passing through the photoelectric isolation module; A PLC programmable controller, wherein the output end of the photoelectric isolation module is connected to the PLC programmable controller, and the PLC programmable controller outputs a control signal according to a predetermined program after receiving the light-on / off signal of the photoelectric isolation module; A voice module, wherein the output end of the PLC programmable controller is connected to the voice module; There are two wireless communication modules, which respectively receive signals from the through-line monitoring module and the rural network line monitoring module and transmit them to the server.

2. A power status monitoring device according to claim 1, characterized in that: It also includes speakers I and II. The output end of the voice module is connected to the speakers I and II. The speaker I is located at the site of the on-site duty personnel, and the speaker II is located at the site of the remote administrator.

3. The power status monitoring device according to claim 1, characterized in that: The server stores the control signal after receiving it, and notifies the on-site duty personnel, remote administrators and preset management personnel of the control signal through a combination of WeChat, text messages and telephone calls.

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