Highway power supply voltage reduction centralized control cabinet

Abstract

The utility model discloses a highway power supply voltage reduction centralized control cabinet which comprises a cabinet body, a transformer is arranged in the cabinet body, an input port and an output port are arranged on the cabinet body, and a battery module and a detection module are further arranged in the cabinet body. The input port is connected with the output port, and a first switch is arranged between the two ports; the input port is further connected with the high-voltage side of the transformer, the battery module is connected with the low-voltage side of the transformer, and a second switch is arranged between the input port and the transformer; the detection module is connected with the input port, the battery module and the external terminal; the first switch and the second switch are respectively in communication connection with an external terminal; when the input voltage of the input module is abnormal, the external terminal controls the first switch and the second switch to be switched off; when the output voltage of the battery module is abnormal, the external terminal controls the second switch to be switched off. By means of the arrangement, the highway power supply voltage reduction centralized control cabinet can detect and isolate fault equipment in time, and the influence range of the fault equipment or cables is narrowed as much as possible.

Description

Technical Field

[0001] The utility model relates to the field of power supply and distribution, in particular to a high-speed power supply voltage reduction centralized control cabinet. Background Art

[0002] With the development of social economy, in order to meet people's growing travel needs, it is often necessary to install equipment such as lighting, monitoring and ETC gantry systems during the construction of highway infrastructure.

[0003] At present, when supplying power to the above-mentioned equipment, the highway power supply and distribution uses step-down transformers to supply power to the electrical equipment. When a power supply problem occurs in one of the step-down transformers on the highway, it will directly cause all the equipment powered by the same transformer on the main line to be paralyzed, affecting the normal use of the equipment and the safety of the main line operation. Therefore, there is a need for a step-down centralized control cabinet that can isolate faulty equipment and cables in time and can minimize the scope of the fault to the fault point itself. Summary of the invention

[0004] In order to address the deficiencies of the prior art, the purpose of the utility model is to provide a highway power supply and voltage step-down centralized control cabinet with higher reliability, which can minimize the impact range of faulty equipment and cables.

[0005] Based on the above purpose, the utility model adopts the following technical solution.

[0006] A high-speed power supply and voltage reduction centralized control cabinet comprises a cabinet body, a transformer is arranged in the cabinet body, an input port and an output port for accessing an external power transmission line are arranged on the cabinet body, and a battery module and a detection module are also arranged in the cabinet body; the input port is connected to the output port, and a first switch is arranged between the input port and the output port; the input port is also connected to the high-voltage side of the transformer, the battery module is connected to the low-voltage side of the transformer, and a second switch is arranged between the input port and the transformer; the detection module is connected to the input port, the battery module and an external terminal, the detection module detects the input voltage of the input port and the output voltage of the battery module, and transmits them to the external terminal; the first switch and the second switch are respectively connected to the external terminal for communication; when the input voltage of the input module is abnormal, the detection module outputs a first voltage alarm signal to the external terminal, and the external terminal controls the first switch and the second switch to be disconnected after receiving the first voltage alarm signal; when the output voltage of the battery module is abnormal, the detection module outputs a second voltage alarm signal to the external terminal, and the external terminal controls the second switch to be disconnected after receiving the second voltage alarm signal.

[0007] Furthermore, the battery module includes a conversion unit and an energy storage unit, and the conversion unit and the energy storage unit are connected; the conversion unit is also connected to the second switch and the external load respectively.

[0008] Furthermore, when the second switch is closed, the energy storage unit and the transmission line connected to the input port together supply power to the external load through the conversion unit, so that the output voltage of the battery module is stabilized at 220V. When the second switch is opened, the energy storage unit supplies power to the external load through the conversion unit.

[0009] Further, when the second switch is turned on, the energy storage unit supplies power to the external load for a period of time greater than or equal to 2 hours.

[0010] Furthermore, a current transformer is provided between the second switch and the battery module.

[0011] Furthermore, the highway power supply boost control cabinet includes a surge protection module, which is connected to the current transformer.

[0012] Furthermore, the highway power supply boost control cabinet includes a monitoring module, and the monitoring module is connected to an external terminal.

[0013] Furthermore, a cabinet door is provided on the cabinet body, and a door magnetic switch is provided on the cabinet door. The door magnetic switch is connected to the monitoring module. When the door magnetic switch is turned on, the monitoring module outputs a door opening alarm signal to the external terminal.

[0014] Furthermore, the highway power supply boost control cabinet includes an air conditioner, which is connected to a monitoring module. The monitoring module can monitor the temperature and humidity inside the cabinet. When the temperature and humidity inside the cabinet are outside the working temperature and humidity range, the monitoring module outputs a temperature and humidity alarm signal to an external terminal. After receiving the temperature and humidity alarm signal, the external terminal controls the air conditioner to adjust the temperature and humidity through the monitoring module.

[0015] Furthermore, the highway power supply boost control cabinet includes a water immersion device, which is connected to a monitoring module. The monitoring module can monitor the water immersion degree in the cabinet. When the water immersion degree is higher than a preset threshold, the monitoring module outputs a water immersion alarm signal to an external terminal. After receiving the water immersion alarm signal, the external terminal controls the water immersion device through the monitoring module to perform water immersion adjustment.

[0016] The above-mentioned highway power supply step-down control cabinet can detect the fault point of the equipment or cable by using the detection module to detect the input voltage of the cable and the output voltage of the battery module; and remotely control the first switch and the second switch through the external terminal to isolate the fault point from the main line, which can minimize the impact of the fault point on other equipment on the main line, thereby improving the power supply reliability of the highway power supply step-down control cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a high-speed power supply step-down centralized control cabinet provided by the utility model;

[0018] Figure 2The utility model is a circuit diagram of a high-speed power supply step-down centralized control cabinet. DETAILED DESCRIPTION

[0019] The following is a clear and complete description of the technical solutions in the embodiments of the utility model in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of the utility model.

[0020] like Figure 1 As shown, this embodiment provides a high-speed power supply step-down centralized control cabinet. The high-speed power supply step-down centralized control cabinet includes a cabinet 11, a transformer 12 is arranged inside the cabinet 11, and an input port 13 and an output port 14 for accessing an external transmission line are arranged on the cabinet 11. Among them, the transformer 12 is a step-down transformer.

[0021] Specifically, the input port 13 is connected to the output port 14, and a first switch 101 is provided between the input port 13 and the output port 14. When a power supply problem occurs in the transmission line cable at the input port 13, the first switch 101 can be opened to isolate the section of cable from the subsequent cables to ensure the safety of the highway power supply. More specifically, a battery module 15 and a detection module 16 are also provided in the cabinet 11. The input port 13 is connected to the high-voltage side of the transformer 12, the battery module 15 is connected to the low-voltage side of the transformer 12, and a second switch 102 is provided between the input port 13 and the transformer 12. When a power supply problem occurs to the equipment in the highway power supply step-down control cabinet, the second switch 102 can be opened to isolate the highway power supply step-down control cabinet from the transmission line to avoid affecting the normal operation of other equipment on the main line.

[0022] Furthermore, the detection module 16 is connected to the input port 13, the battery module 15 and the external terminal. The detection module 16 can detect the input voltage of the input port 13 and the output voltage of the battery module 15, and transmit them to the external terminal; the first switch 101 and the second switch 102 are respectively connected to the external terminal for communication; when the input voltage of the input module is abnormal, the detection module 16 outputs a first voltage alarm signal to the external terminal, and the external terminal controls the first switch 101 and the second switch 102 to be disconnected after receiving the first voltage alarm signal; when the output voltage of the battery module 15 is abnormal, the detection module 16 outputs a second voltage alarm signal to the external terminal, and the external terminal controls the second switch 102 to be disconnected after receiving the second voltage alarm signal.

[0023] Through the above settings, the highway power supply step-down control cabinet can detect the fault points of power supply cables and electrical equipment, and isolate the fault points by remotely controlling the line on and off through an external terminal, thereby reducing the fault impact range to the fault point itself as much as possible, thereby improving the power supply reliability of the highway power supply step-down control cabinet.

[0024] like Figure 1 and Figure 2 As shown, the battery module 15 includes a conversion unit 151 and an energy storage unit 152, and the conversion unit 151 and the energy storage unit 152 are connected; the conversion unit 151 is also connected to the second switch 102 and the external load. When the second switch 102 is closed, the energy storage unit 152 and the transmission line connected to the input port 13 together supply power to the external load through the conversion unit 151, so that the output voltage of the battery module 15 is stabilized at 220V. Among them, the energy storage unit 152 is used to compensate for the voltage drop caused by the long-distance power transmission of the transmission line. When the second switch 102 is opened, the energy storage unit 152 supplies power to the external load through the conversion unit 151. Among them, the power supply time of the energy storage unit 152 is greater than or equal to 2 hours to ensure the normal operation of the external load, thereby improving the reliability of the power supply of the highway power supply step-down control cabinet.

[0025] like Figure 2 As shown, a third switch 103 is provided between the conversion unit 151 and the transformer 12, and the third switch 103 is connected to the external terminal for communication. When the output voltage of the transformer 12 is abnormal, the external terminal controls the third switch 103 to open to protect the battery module 15 and other electrical equipment. Further, a current transformer 17 is provided between the third switch 103 and the conversion unit 151, which can reduce the output current of the transformer 12 to 5A to protect the battery module 15 and other electrical equipment in the cabinet 11. Further, the current transformer 17 is connected to the detection module 16, and a fourth switch 104 is provided between the current transformer 17 and the conversion unit 151, and the fourth switch 104 is connected to the external terminal for communication. The detection module 16 can detect the output current of the current transformer 17. When the output current of the current transformer 17 is abnormal, the external terminal can control the fourth switch 104 to open to protect the battery module 15, thereby improving the safety of the operation of the high-speed power supply boosting centralized control cabinet.

[0026] The current transformer 17 can also be connected to an external load through the external maintenance bypass of the battery module 15. Specifically, the current transformer 17 is connected to the external load through the fifth switch 105. A padlock 1051 is provided on the fifth switch 105 to ensure that the fifth switch 105 is in a normally open state. When the staff repairs the battery module 15, the padlock 1051 can be opened and the fifth switch 105 can be closed, and the fourth switch 104 can be opened at the same time. At this time, the external load is powered by the transmission line to ensure that the external load can still operate normally when the battery module 15 is repaired.

[0027] like Figure 2 As shown, the highway power supply booster centralized control cabinet also includes a monitoring module 18, which is connected to an external terminal and is used to monitor the operating status of the equipment in the cabinet 11. Specifically, a cabinet door 19 is provided on the cabinet 11, and a door magnetic switch 191 is provided on the cabinet door 19. The door magnetic switch 191 is connected to the monitoring module 18. When the door magnetic switch 191 is opened, the monitoring module 18 sends a door opening alarm signal to the external terminal to promptly discover abnormal conditions such as loss or damage of the equipment in the cabinet 11.

[0028] The highway power supply boost control cabinet also includes a battery detection module 21 and a battery monitoring host 22. The battery detection module 21 is connected to the energy storage unit 152 to detect the operating status of the energy storage unit 152. The battery monitoring host 22 is connected to the battery detection module 21 and the monitoring module 18 respectively to upload the operating status of the energy storage unit 152 to the external terminal through the monitoring module 18, so as to detect whether the energy storage unit 152 is abnormal at all times, so as to prevent the energy storage unit 152 from being unable to supply power to the external load when there is a power supply problem in the transmission line, resulting in the external load not being able to operate normally.

[0029] like Figure 2 As shown, the battery module 15 includes at least five output circuits, each of which can be connected to an external load. A sixth switch 106 is provided between the battery module 15 and the output circuit, and the sixth switch 106 is communicatively connected to an external terminal. When the output voltage of the battery module 15 is abnormal, the external terminal controls the sixth switch 106 to disconnect to protect the external load. Specifically, a circuit breaker 107 and a power sensor 108 are provided on each output circuit. Among them, the power sensor 108 is connected to the monitoring module 18 to transmit the power data of the output circuit to the monitoring module 18; the circuit breaker 107 is communicatively connected to the external terminal, and when the power data of one of the output circuits is abnormal, the external terminal controls the corresponding circuit breaker 107 to disconnect to avoid affecting the battery module 15 and the equipment of other output circuits.

[0030] The highway power supply boost control cabinet also includes an air conditioner 23, which is connected to the monitoring module 18. The monitoring module 18 can monitor the temperature and humidity in the cabinet 11. When the temperature and humidity in the cabinet 11 are outside the working temperature and humidity range, the monitoring module 18 outputs a temperature and humidity alarm signal to the external terminal. After receiving the temperature and humidity alarm signal, the external terminal controls the air conditioner 23 through the monitoring module 18 to adjust the temperature and humidity. Among them, the working temperature range of the highway power supply boost control cabinet is -20℃~60℃, and the working humidity range is a humidity value less than 98%. Specifically, the air conditioner 23 is connected to the current transformer 17 through the seventh switch 109, so that the air conditioner 23 is powered by the transmission line. The seventh switch 109 is connected to the external terminal in communication. When the output current of the current transformer 17 is abnormal or the output voltage of the transformer 12 is abnormal, the external terminal can open the fifth switch 105 to ensure the safety of the operation of the air conditioner 23.

[0031] The highway power supply booster control cabinet also includes a water immersion device 24, which is connected to the monitoring module 18. The monitoring module 18 can monitor the water immersion degree in the cabinet 11. When the water immersion degree is higher than a preset threshold, the monitoring module 18 outputs a water immersion alarm signal to an external terminal. After receiving the water immersion alarm signal, the external terminal controls the water immersion device 24 to adjust the water immersion through the monitoring module 18 to ensure the safety of the electrical equipment in the cabinet 11.

[0032] The high-speed power supply boost control cabinet also includes a surge protection module 25, which is connected to the third switch 103. Specifically, the surge protection module 25 includes a fuse 251 and a surge protector 252. Among them, the fuse 251 is connected to the current transformer 17, and the surge protector 252 is connected to the fuse 251 and grounded to perform surge protection on the electrical equipment in the line. More specifically, the surge protection module 25 can defend against 8 / 20us waveform lightning current, and the nominal discharge current of the surge protection module 25 is 20kA, and the maximum discharge current is 40kA.

[0033] Through the above settings, the highway power supply step-down control cabinet has no less than 6 remote control power supply circuit on-off points to protect the electrical equipment in the cabinet 11 and minimize the impact of the fault to the fault point itself as much as possible.

[0034] In summary, the present application provides a high-speed power supply step-down control cabinet, which can detect power supply problems in itself and in the transmission lines and cables, and isolate the fault point in time through remote control of an external terminal, and can reduce the impact of the fault to the fault point itself. When a fault occurs in the electrical equipment in the cabinet 11, the high-speed power supply step-down control cabinet can cut off the connection with the power supply line, so as not to affect the normal operation of other equipment on the power supply line.

[0035] The above is a description of the embodiments of the utility model. Through the above description of the disclosed embodiments, professionals and technicians in the field can implement or use the utility model. Various modifications to these embodiments will be obvious to professionals and technicians in the field. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the utility model will not be limited to these embodiments shown in this article, but will comply with the widest range consistent with the principles and novelties disclosed herein.

Claims

1. A high-speed power supply step-down centralized control cabinet, comprising a cabinet body (11), wherein a transformer (12) is arranged inside the cabinet body (11), and an input port (13) and an output port (14) for connecting an external power transmission line are arranged on the cabinet body (11), characterized in that: A battery module (15) and a detection module (16) are also provided in the cabinet (11); the input port (13) is connected to the output port (14), and a first switch (101) is provided between the input port (13) and the output port (14); the input port (13) is also connected to the high-voltage side of the transformer (12), the battery module (15) is connected to the low-voltage side of the transformer (12), and a second switch (102) is provided between the input port (13) and the transformer (12); the detection module (16) is connected to the input port (13), the battery module (15) and an external terminal, and the detection module (16) detects whether the input port (13) is in a state of voltage or voltage. 3) and the output voltage of the battery module (15), and transmit them to an external terminal; the first switch (101) and the second switch (102) are respectively connected to the external terminal for communication; when the input voltage of the input port (13) is abnormal, the detection module (16) outputs a first voltage alarm signal to the external terminal, and the external terminal controls the first switch (101) and the second switch (102) to be disconnected after receiving the first voltage alarm signal; when the output voltage of the battery module (15) is abnormal, the detection module (16) outputs a second voltage alarm signal to the external terminal, and the external terminal controls the second switch (102) to be disconnected after receiving the second voltage alarm signal.

2. The high-speed power supply step-down centralized control cabinet according to claim 1, characterized in that: The battery module (15) comprises a conversion unit (151) and an energy storage unit (152), wherein the conversion unit (151) and the energy storage unit (152) are connected; the conversion unit (151) is also connected to the second switch (102) and an external load.

3. The high-speed power supply step-down centralized control cabinet according to claim 2, characterized in that: When the second switch (102) is closed, the energy storage unit (152) and the power transmission line connected to the input port (13) together supply power to the external load through the conversion unit (151), so that the output voltage of the battery module (15) is stabilized at 220V; when the second switch (102) is opened, the energy storage unit (152) supplies power to the external load through the conversion unit (151).

4. The high-speed power supply step-down centralized control cabinet according to claim 3, characterized in that: When the second switch (102) is turned on, the energy storage unit (152) supplies power to the external load for a period of time greater than or equal to 2 hours.

5. The high-speed power supply step-down centralized control cabinet according to claim 1, characterized in that: A current transformer (17) is provided between the second switch (102) and the battery module (15).

6. The high-speed power supply step-down centralized control cabinet according to claim 5, characterized in that: The highway power supply boost centralized control cabinet comprises a surge protection module (25), and the surge protection module (25) is connected to the current transformer (17).

7. The high-speed power supply step-down centralized control cabinet according to claim 1, characterized in that: The highway power supply boosting centralized control cabinet comprises a monitoring module (18), and the monitoring module (18) is connected to an external terminal.

8. The high-speed power supply step-down centralized control cabinet according to claim 7, characterized in that: The cabinet body (11) is provided with a cabinet door (19), the cabinet door (19) is provided with a door magnetic switch (191), the door magnetic switch (191) is connected to the monitoring module (18), and when the door magnetic switch (191) is opened, the monitoring module (18) outputs a door opening alarm signal to an external terminal.

9. The high-speed power supply voltage reduction centralized control cabinet according to claim 7, characterized in that: The highway power supply boost control cabinet comprises an air conditioner (23), the air conditioner (23) is connected to the monitoring module (18), the monitoring module (18) can monitor the temperature and humidity in the cabinet (11), when the temperature and humidity in the cabinet (11) are outside the working temperature and humidity range, the monitoring module (18) outputs a temperature and humidity alarm signal to an external terminal, and after receiving the temperature and humidity alarm signal, the external terminal controls the air conditioner (23) through the monitoring module (18) to adjust the temperature and humidity.

10. The high-speed power supply step-down centralized control cabinet according to claim 7, characterized in that: The highway power supply booster control cabinet comprises a water immersion device (24), the water immersion device (24) is connected to the monitoring module (18), the monitoring module (18) can monitor the water immersion degree in the cabinet (11), when the water immersion degree is higher than a preset threshold, the monitoring module (18) outputs a water immersion alarm signal to an external terminal, and after receiving the water immersion alarm signal, the external terminal controls the water immersion device (24) through the monitoring module (18) to perform water immersion adjustment.

Images