High-reliability railway tunnel dual-path power input ups device

Abstract

The utility model provides a kind of high reliability railway tunnel dual-path power input UPS device, including three input ports and multiple output ports, wherein input port includes two-way ac input port and a battery port, each ac input is designed independent sampling circuit and AC rectifier, battery port is connected with sampling circuit and battery rectifier, two AC rectifiers and a battery rectifier are connected with DC / AC inverter, and DC / AC inverter is connected multiple output ports by output sampling circuit.The utility model when main path power supply fails, device can quickly, accurately switch to standby power supply, ensure the continuity of power supply.

Description

Technical Field

[0001] This utility model relates to the field of wireless communication equipment and communication power supply application technology, specifically a highly reliable dual-power input UPS device for railway tunnels. Background Technology

[0002] UPS (Uninterruptible Power Supply) in railway tunnels is an important power protection device that plays a vital role in the railway system.

[0003] The communication system inside the tunnel is crucial for train dispatching, passenger information transmission, and emergency communication. UPS provides continuous and stable power to the communication equipment, ensuring uninterrupted communication and guaranteeing the timeliness and accuracy of information transmission.

[0004] Existing UPS such Figure 1 As shown, it includes one AC input port and one battery port. It supports 1-3 output ports. In railway applications, such as... Figure 2 As shown, traditional UPS equipment cannot be connected to the input voltage of a remote power supply box; it can only be connected to the AC power of one power supply box. Once the power supply box fails or the inverter inside the UPS fails, the communication equipment will be unable to supply power, greatly reducing the reliability of the entire communication system and posing a hidden danger to the safe operation of communication equipment in the tunnel.

[0005] Although traditional UPS systems can support dual power inputs, they have certain limitations in practical applications:

[0006] (1) The switching logic is complex:

[0007] The switching logic of traditional UPS systems with dual power inputs can be relatively complex. When the main power supply fails, the UPS needs to quickly switch to the bypass power supply, but this process can be affected by various factors, such as switching time and power fluctuations during the switching process.

[0008] (2) Redundancy backup issue:

[0009] With dual power inputs, redundancy backup can be achieved, but if the two power sources are different, there may be mismatches in parameters such as phase and voltage, which will affect the switching efficiency and stability of the UPS.

[0010] (3) High requirements for equipment:

[0011] To achieve dual power input, the UPS equipment itself needs to possess high performance and stability. Simultaneously, there are certain requirements for the connected load devices, ensuring that the equipment can smoothly switch between different power sources without being affected.

[0012] Due to the limitations of traditional UPS systems, there is a risk to the stability and reliability of communication systems in railway tunnels. Therefore, there is an urgent need for a highly reliable UPS device with dual inputs specifically designed for railway tunnels. Utility Model Content

[0013] To address the problems of existing technologies, this invention provides a highly reliable dual-power-input UPS device for railway tunnels. When the main power supply fails, the device can quickly and accurately switch to the backup power supply, ensuring continuous power supply. Intelligent switching technology enables real-time monitoring of power status and seamless switching, avoiding the slow switching time of traditional UPS devices. It offers significant benefits in improving the reliability and stability of power supply, enhancing energy efficiency and energy saving, increasing the environmental adaptability and durability of equipment, providing comprehensive monitoring and management functions, improving system scalability and flexibility, and enhancing system security and reliability.

[0014] This invention includes three input ports and multiple output ports. The input ports include two AC input ports and one battery input port. Each AC input port has an independent sampling circuit and AC rectifier. The battery input port is connected to a sampling circuit and a battery rectifier. Both AC rectifiers and one battery rectifier are connected to a DC / AC inverter. The DC / AC inverter is connected to multiple output ports via an output sampling circuit. Each module is connected to an MCU control unit.

[0015] In a further improvement, the AC rectifier includes a first AC rectifier and a second AC rectifier, with two bypass switches provided between the input port and the output port. The first bypass switch has two input terminals: one connected to the output terminal of the DC / AC inverter and the other connected to the input terminal of the first AC rectifier. The output terminal of the first bypass switch is connected to the output sampling circuit. The second bypass switch has its input terminal connected to the input terminal of the second AC rectifier and its output terminal connected to the output sampling circuit.

[0016] The beneficial effects of this utility model are as follows:

[0017] 1. Improved reliability and stability of power supply; Dual power input design: This device adopts dual power input, which can quickly switch to the other power source when one power source fails, ensuring the continuity of power supply and avoiding downtime or damage to communication equipment in the tunnel due to power failure. Intelligent switching technology: Through advanced intelligent switching technology, this device can monitor the power status in real time and has seamless switching capabilities, without impacting the load equipment.

[0018] 2. Improve energy efficiency and energy saving effect. High-efficiency power conversion: This device uses high-efficiency power conversion technology to convert input electrical energy into high-quality output electrical energy, reducing energy waste. Intelligent energy-saving control: It automatically adjusts the operating mode according to the load condition, such as reducing output power when the load is light, to reduce energy consumption and achieve energy-saving effect.

[0019] 3. Enhanced environmental adaptability and durability. Environmental adaptability design: Addressing the complex environment of railway tunnels, the device incorporates dustproof, moisture-proof, and corrosion-resistant measures, improving operational stability and lifespan in harsh environments. Wide-temperature-range components: Employing components capable of stable operation over a wide temperature range ensures normal operation under different seasons and climatic conditions.

[0020] 4. Provides comprehensive monitoring and management functions. Real-time monitoring: Through the intelligent monitoring system, the operating status of the UPS unit, the load of communication equipment, and fault alarms can be monitored in real time, allowing operators to understand the equipment status promptly. Remote management: Provides remote management and control functions, allowing railway maintenance personnel to remotely configure, monitor, and maintain the equipment, improving operational efficiency.

[0021] 5. Improved system scalability and flexibility. Modular design: The device adopts a modular design, allowing for combination and expansion according to actual needs, easily adapting to railway tunnel projects of different scales and requirements. Easy upgrade and maintenance: The modular design makes equipment upgrades and maintenance simpler and more convenient, reducing maintenance costs and time.

[0022] 6. Enhanced system safety and reliability. Fault warning and self-diagnosis: The device features fault warning and self-diagnosis functions, enabling real-time monitoring of the equipment's internal operating status and parameter changes, timely detection and handling of potential faults, thus improving system safety and reliability. Multiple protection measures: Such as overheat protection and overcurrent protection, ensuring safe operation of the equipment under abnormal conditions and preventing power outages or equipment damage due to equipment failure. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 Schematic diagram for a traditional UPS;

[0025] Figure 2 This is a schematic diagram of the traditional UPS operating state;

[0026] Figure 3 This is a schematic diagram of the design principle of this utility model;

[0027] Figure 4 This is a schematic diagram of the working state of this utility model. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0029] The structure of this utility model is as follows: Figure 3 As shown, the system includes three input ports and multiple output ports. The input ports include two AC input ports and one battery input port. Each AC input port has an independent sampling circuit and AC rectifier. The battery input port is connected to the sampling circuit and battery rectifier. Both AC rectifiers and one battery rectifier are connected to a DC / AC inverter. The DC / AC inverter is connected to multiple output ports via an output sampling circuit. Each module is connected to an MCU control unit. The AC rectifier includes a first AC rectifier and a second AC rectifier. Two bypass switches are provided between the input ports and output ports. The first bypass switch has two input terminals: one connected to the output terminal of the DC / AC inverter and the other connected to the input terminal of the first AC rectifier. The output terminal of the first bypass switch is connected to the output sampling circuit. The second bypass switch has its input terminal connected to the input terminal of the second AC rectifier and its output terminal connected to the output sampling circuit.

[0030] This utility model's tunnel-specific UPS supports three input ports: two AC input ports and one battery input port. It supports multiple outputs, with a minimum of three. Each AC input has an independent sampling circuit and rectifier, allowing both AC inputs to operate simultaneously with seamless switching. Failure of any one input has no impact on the output voltage, improving UPS reliability by 30%. It also supports battery inverter output; if both inputs are without voltage, the battery inverter will provide normal AC voltage output. Furthermore, this design incorporates a "fault-oriented safety" mechanism. When the rectifier and inverter fail to support normal output, the MCU control unit automatically controls the bypass switching switches (switch 1 and switch 2 are controlled by a single pin), intelligently guiding the system to a "safe side" bypass state.

[0031] like Figure 4As shown, this utility model of a tunnel-specific UPS supports AC power from two remote power supply boxes. A failure in either external power supply will not affect the power supply to the UPS and communication equipment. Furthermore, a failure in any AC inverter circuit within the UPS will not affect the UPS's AC output. This significantly improves the reliability of the UPS and the entire communication system.

[0032] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to interchangeably. Each embodiment focuses on its differences from other embodiments. In particular, for the device embodiments, the above descriptions are merely preferred embodiments of this utility model. Since they are fundamentally similar to the method embodiments, the descriptions are relatively simple; relevant parts can be referred to the descriptions of the method embodiments. The above descriptions are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this utility model, without departing from the principle of this utility model, should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A highly reliable dual-power-input UPS device for railway tunnels, characterized in that: It includes three input ports and multiple output ports. The input ports include two AC input ports and one battery port. Each AC input is designed with an independent sampling circuit and AC rectifier. The battery port is connected to the sampling circuit and battery rectifier. The two AC rectifiers and one battery rectifier are all connected to a DC / AC inverter. The DC / AC inverter is connected to multiple output ports through the output sampling circuit.

2. The high-reliability dual-power-input UPS device for railway tunnels according to claim 1, characterized in that: The AC rectifier includes a first AC rectifier and a second AC rectifier. Two bypass switches are provided between the input port and the output port. The first bypass switch has two input terminals: one input terminal is connected to the output terminal of the DC / AC inverter, and the other input terminal is connected to the input terminal of the first AC rectifier. The output terminal of the first bypass switch is connected to the output sampling circuit. The second bypass switch has its input terminal connected to the input terminal of the second AC rectifier, and its output terminal connected to the output sampling circuit.

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