Integrated automatic mobile power supply system for railway traction pavilion

Abstract

The utility model belongs to the field of power supply systems, particularly relates to an integrated automatic mobile power supply system for a railway traction station, and aims to solve the problems of insufficient power supply reliability and high maintenance cost caused by poor safety of storage battery connection and lack of effective monitoring means. A rectifier module is connected with an alternating current input end, a first step-down module and a second step-down module, the first step-down module is connected with a storage battery, the storage battery is connected with a step-up module, the step-up module is connected with the second step-down module, and the second step-down module is connected with a direct current output end. The charging and discharging management module is connected between the first voltage reduction module and a circuit connected with the storage battery, the charging and discharging management module is connected with the control and monitoring module, the control and monitoring module is connected with the first detection module, the first detection module is connected with the alternating current input end, and the control and monitoring module is connected with the direct current output end. The device is convenient and simple to install, not only shortens the transformation time, but also can provide a safe and reliable working power supply.

Description

Technical Field

[0001] The utility model belongs to the field of power supply systems, and particularly relates to an integrated automatic mobile power supply system for railway traction substations and kiosks. Background Art

[0002] The currently used temporary power supplies are generally assembled with a set of rectifier modules and a set of batteries. After the AC power is input into the rectifier modules, the rectifier modules output DC power, which is connected in parallel with the battery pack to supply power to the integrated automatic equipment in the substation without interruption. In another case, in order to ensure power supply reliability, a complete set of AC / DC system panels is installed for handover and transition.

[0003] Problems existing in the use are as follows: First, when the used rectifier modules are under high temperature, large current, undervoltage, and overvoltage conditions, the modules freeze in the self-protection state; second, the temporary batteries, rectifier modules, and distribution boxes make the operation site chaotic and increase the construction operation time; third, for series-connected batteries, it is necessary to ensure that each connection point is firm. If the connection of a single battery is unreliable and the internal resistance increases, the entire battery pack has potential safety hazards. In addition, the number of series-connected batteries is large, the wiring is cumbersome, and there is a risk of short circuit; fourth, the temporary power supply has no relevant monitoring device, and abnormal states in the power supply cannot be detected in time. Using a complete set of AC / DC systems greatly increases the transformation time, requires a large amount of manpower and material resources, and the installation process is cumbersome.

[0004] Based on this, the utility model proposes an integrated automatic mobile power supply system for railway traction substations and kiosks. Content of the Utility Model

[0005] In order to solve the above problems in the prior art, that is, the existing temporary power supply system has insufficient power supply reliability and high maintenance costs due to the easy failure of rectifier modules, messy and inefficient on-site layout, poor safety of battery connections, and lack of effective monitoring means, the utility model provides an integrated automatic mobile power supply system for railway traction substations and kiosks, including a rectifier module, a first step-down module, a second step-down module, a boost module, a battery, a charge and discharge management module, a control and monitoring module, and a first detection module;

[0006] The first end of the rectifier module is connected to the AC input terminal, the second end and the third end of the rectifier module are respectively connected to the first end of the first step-down module and the first end of the second step-down module, the second end of the first step-down module is connected to the first end of the battery, the second end of the battery is connected to the first end of the boost module, the second end of the boost module is connected to the second end of the second step-down module, and the second end of the second step-down module is connected to the DC output terminal;

[0007] The circuit between the second terminal of the first step-down module and the first terminal of the storage battery is connected to the first terminal of the charge and discharge management module. The second terminal of the charge and discharge management module is connected to the first terminal of the control and monitoring module. The second terminal of the control and monitoring module is connected to the first terminal of the first detection module. The second terminal of the first detection module is connected to the AC input terminal. The third terminal of the control and monitoring module is connected to the DC output terminal.

[0008] In some preferred embodiments, a lightning protection and filtering module is provided between the AC input terminal and the rectification module.

[0009] In some preferred embodiments, the second terminal of the first detection module is connected to the line between the AC input terminal and the lightning protection and filtering module.

[0010] In some preferred embodiments, the AC input terminal is used to receive a current with a voltage of 220 volts or 380 volts.

[0011] In some preferred embodiments, the second step-down module is used to step down the voltage of the current received at the AC input terminal to 110 volts and output it to the DC output terminal.

[0012] In some preferred embodiments, a second detection module is connected between the third terminal of the control and monitoring module and the DC output terminal.

[0013] In some preferred embodiments, the rectification module is an AC / DC rectification circuit.

[0014] In some preferred embodiments, both the first step-down module and the second step-down module are DC / DC step-down circuits.

[0015] In some preferred embodiments, the boost module is a DC / DC boost circuit.

[0016] Advantages of the present utility model:

[0017] (1) The rectification module used in the present utility model has high conversion efficiency, strong overload capacity and high reliability. The isolation voltage can reach 2500VAC, meeting the requirements of the power market. With the supporting power system, reliable power supply can be achieved by closing the air switch after connecting the power supply, without affecting the operation site and delaying the construction time. The DC power supply part can achieve normal power supply when using two storage batteries, with relatively small safety risks such as undervoltage and short circuit. It provides the real-time status, early warning, communication of the storage battery and the status of the DC power supply module online, facilitating the timely detection of abnormal states of the power supply system.

[0018] (2) The utility model can achieve DC uninterrupted power supply and intelligent management function of the power supply system; the combined use of the parallel modules and the battery saves material costs, reduces the system volume, and makes the installation convenient and simple. During the transformation process of comprehensive automation equipment, it not only shortens the transformation time, but also can meet the safe and reliable working power supply of traction substations and kiosks. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Other features, objects, and advantages of the present application will become more apparent by reading the detailed description of the non-limiting embodiments with reference to the following drawings:

[0020] Figure 1 It is a schematic structural diagram of a comprehensive automation mobile power supply system for railway traction substations and kiosks of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The present application will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the relevant utility model and do not limit the utility model. In addition, it should be noted that only the parts related to the relevant utility model are shown in the drawings for the convenience of description.

[0022] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the drawings and embodiments.

[0023] As Figure 1 shown, the present utility model provides a comprehensive automation mobile power supply system for railway traction substations and kiosks, including a rectification module 1, a first step-down module 2, a second step-down module 3, a boost module 4, a battery 5, a charge and discharge management module 6, a control and monitoring module 7, and a first detection module 8;

[0024] The first end of the rectification module 1 is connected to the AC input terminal, the second end and the third end of the rectification module 1 are respectively connected to the first end of the first step-down module 2 and the first end of the second step-down module 3, the second end of the first step-down module 2 is connected to the first end of the battery 5, the second end of the battery 5 is connected to the first end of the boost module 4, the second end of the boost module 4 is connected to the second end of the second step-down module 3, and the second end of the second step-down module 3 is connected to the DC output terminal;

[0025] The circuit between the second end of the first step-down module 2 and the first end of the storage battery 5 is connected to the first end of the charge and discharge management module 6. The second end of the charge and discharge management module 6 is connected to the first end of the control and monitoring module 7. The second end of the control and monitoring module 7 is connected to the first end of the first detection module 8. The second end of the first detection module 8 is connected to the AC input terminal. The third end of the control and monitoring module 7 is connected to the DC output terminal.

[0026] Among them, the function of the charge and discharge management module 6 is to be responsible for controlling the charging and discharging processes of the storage battery 5 to ensure the safety and efficiency of the storage battery 5. It will adjust the charging current and voltage according to the state of the storage battery 5 such as temperature, voltage, etc., and automatically stop charging or discharging when reaching the preset conditions. At the same time, the charge and discharge management module 6 can also monitor the health status of the storage battery 5, timely detect abnormal situations and take corresponding measures to extend the service life of the storage battery 5.

[0027] Among them, the rectification module in the present utility model is an AC / DC rectification circuit; both the first step-down module 2 and the second step-down module 3 are DC / DC step-down circuits; the boost module 4 is a DC / DC boost circuit.

[0028] Among them, the rated voltage of the storage battery 5 in the present utility model is 24 volts, and the first step-down module 2 is used to step down the rectified 220 volts or 380 volts current to 24 volts €.

[0029] Among them, a second detection module 10 is connected between the third end of the control and monitoring module 7 and the DC output terminal.

[0030] Among them, each part of the entire power supply system is collected, calculated, processed and controlled by the control and monitoring module 7 to achieve the corresponding functions. The first detection module 8 and the second detection module 10 are mainly used to measure the voltage values and current values at each node to facilitate real-time understanding of the working conditions of the system. At the same time, by feeding back this information to the control and monitoring module 7, the optimized management of the entire system can be realized.

[0031] As a further explanation of the present utility model, see Figure 1 , a lightning protection and filtering module 9 is provided between the AC input terminal and the rectification module 1. More specifically, the second end of the first detection module 8 is connected to the line between the AC input terminal and the lightning protection and filtering module 9.

[0032] In this utility model, the AC input terminal is used to receive the current of 220V or 380V voltage. After receiving, it is input into the lightning protection and filtering module 9, and active power factor correction is carried out. It is converted into 380V DC power and input into the rectification module 1. After being rectified by the rectification module 1, it is divided into two paths. One path of DC power passes through the second buck module 3 to reduce the voltage of the current received by the AC input terminal to 110V DC power supply for the normal use of the substation; the other path is stepped down by the first buck module 2 to charge the battery 5 intelligently.

[0033] When the alternating current is abnormal or the battery is activated and the capacity is measured, the DC power of the battery 5 passes through the battery input switch and enters the boost module 4 to convert the DC power of the battery 5 into +110V DC power output. When switching between the AC power supply mode and the battery power supply mode, the switching time is 0S. When the DC power supply fails, the main circuit output is turned off through the control and monitoring module 7 for protection.

[0034] Among them, the main circuit is the circuit where the lightning protection and filtering module 9, the rectification module 1, and the second buck module 3 are located.

[0035] In the description of this utility model, the terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., which indicate the direction or position relationship, are based on the direction or position relationship shown in the drawings. This is only for the convenience of description, rather than indicating or implying that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation to this utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0036] In addition, it should be noted that in the description of this utility model, unless otherwise clearly specified and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific situations.

[0037] The term "including" or any other similar term is intended to cover non-exclusive inclusion, so that a process, method, article, or device / equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes the elements inherent in these processes, methods, articles, or devices / equipment.

[0038] So far, the technical solution of the present utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easily understood by those skilled in the art that the protection scope of the present utility model is obviously not limited to these specific embodiments. Without departing from the principle of the present utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of the present utility model.

Claims

1. A comprehensive mobile power supply system for railway traction booths, characterized in that: It comprises a rectifier module (1), a first step-down module (2), a second step-down module (3), a step-up module (4), a storage battery (5), a charge and discharge management module (6), a control and monitoring module (7) and a first detection module (8); The first end of the rectifier module (1) is connected to the AC input end, the second end and the third end of the rectifier module (1) are respectively connected to the first end of the first step-down module (2) and the first end of the second step-down module (3), the second end of the first step-down module (2) is connected to the first end of the storage battery (5), the second end of the storage battery (5) is connected to the first end of the boost module (4), the second end of the boost module (4) is connected to the second end of the second step-down module (3), and the second end of the second step-down module (3) is connected to the DC output end; The circuit between the second end of the first voltage reduction module (2) and the first end of the storage battery (5) is connected to the first end of the charge and discharge management module (6), the second end of the charge and discharge management module (6) is connected to the first end of the control and monitoring module (7), the second end of the control and monitoring module (7) is connected to the first end of the first detection module (8), the second end of the first detection module (8) is connected to the AC input end, and the third end of the control and monitoring module (7) is connected to the DC output end.

2. The integrated mobile power supply system for railway traction booth according to claim 1 is characterized in that: A lightning protection and filtering module (9) is provided between the AC input terminal and the rectification module (1).

3. The integrated self-mobile power supply system for railway traction booth according to claim 2 is characterized in that: The second end of the first detection module (8) is connected to the line between the AC input end and the lightning protection and filtering module (9).

4. The integrated self-mobile power supply system for railway traction booth according to claim 1, characterized in that: The AC input terminal is used to receive current with a voltage of 220 volts or 380 volts.

5. The integrated self-mobile power supply system for railway traction booth according to claim 4 is characterized in that: The second step-down module (3) is used to reduce the voltage of the current received by the AC input end to 110 volts and output it to the DC output end.

6. The integrated self-mobile power supply system for railway traction booth according to claim 1, characterized in that: A second detection module (10) is connected between the third end of the control and monitoring module (7) and the DC output end.

7. The integrated self-mobile power supply system for railway traction booth according to claim 1, characterized in that: The rectifier module is an AC / DC rectifier circuit.

8. The integrated self-mobile power supply system for railway traction booth according to claim 1, characterized in that: The first step-down module (2) and the second step-down module (3) are both DC / DC step-down circuits.

9. The integrated self-mobile power supply system for railway traction booth according to claim 1, characterized in that: The boost module (4) is a DC / DC boost circuit.

Images