A new type of power supply system for multifunctional intelligent poles

Abstract

The present invention relates to the field of municipal equipment and electric power equipment, and specifically is a new type of power supply system for multifunctional intelligent poles. A low-voltage substation is externally connected to two or more distribution boxes, comprising: a power management device, the power management device comprises an intelligent power module and a lighting power management module arranged in each intelligent pole, the intelligent power module and the lighting power management module respectively supply power to the lighting equipment and the mounted equipment on the intelligent pole where they are located; an equipment power supply circuit, a distribution box is connected to each of the intelligent power modules in sequence through the equipment power supply circuit, and the output phase lines of adjacent intelligent power modules are different from each other; a lighting power supply circuit, another distribution box is connected to each of the lighting power management modules in sequence through the lighting power supply circuit, and the output phase lines of adjacent lighting power management modules are different from each other; the beneficial effects of the present invention are: the new type of power supply system for multifunctional intelligent poles is safe and reliable, and can meet the power supply needs of multifunctional intelligent poles.

Description

Technical Field

[0001] The invention relates to the field of municipal equipment and electric power equipment, and in particular to a new type of multifunctional intelligent pole power supply system. Background Art

[0002] The rise of smart poles in cities has become the best carrier for collecting information in the construction of smart cities. Intelligent control systems are used to realize intelligent road lighting. In addition to ensuring the basic functions of street lamps, poles are used as carriers to add functions related to urban management, such as traffic monitoring, security monitoring, environmental weather monitoring, broadcasting, information screens, charging piles, WIFI, 5G and other application scenarios.

[0003] Traditional street lamps have a single function and are simply used for urban road lighting. Their power supply and distribution designs all use a single line, hand-in-hand series connection or insulation piercing T-connection. Due to their single function, the power consumption of street lamps is low, and the requirements for power supply lines and power capacity are not high. Basically, traditional street lamps are connected in series in a hand-in-hand manner or in a single insulation piercing T-connection.

[0004] Since there are many devices on smart poles, complex functions, varied application scenarios, large power consumption requirements, many departments involved, and high safety level requirements, the power supply and distribution of smart poles are more stringent and complex, and the power supply and distribution inside the poles are more integrated. The power supply and distribution solutions of traditional street lamps can no longer adapt to and meet the requirements of new smart poles for power line safety, pole power distribution control, and power-on safety of scene function modules. Summary of the invention

[0005] The purpose of the present invention is to provide a new type of multifunctional intelligent pole power supply system to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A new type of power supply system for multifunctional intelligent poles, a low-voltage substation is externally connected to two or more distribution boxes, including: a power management device, the power management device includes an intelligent power module and a lighting power management module arranged in each intelligent pole, the intelligent power module and the lighting power management module respectively supply power to the lighting equipment and the mounted equipment on the intelligent pole where they are located; an equipment power supply circuit, a distribution box is connected to each of the intelligent power modules in sequence through the equipment power supply circuit, and the output phase lines of adjacent intelligent power modules are different; a lighting power supply circuit, another distribution box is connected to each of the lighting power management modules in sequence through the lighting power supply circuit, and the output phase lines of adjacent lighting power management modules are different.

[0008] As a further solution of the present invention: the power management device also includes a battery pack, and the battery pack supplies power to the intelligent power module and the lighting power management module.

[0009] As a further solution of the present invention: the grounding form of the smart pole is TN-S grounding system.

[0010] As a further solution of the present invention: the intelligent power module includes a distribution unit and a grounding unit. The distribution unit is connected to the equipment power supply circuit and outputs multiple branches to supply power to each device mounted on the smart pole. The grounding unit is connected to the ground wire of each device mounted on the smart pole.

[0011] As a further solution of the present invention: the power distribution unit has one or more output voltages.

[0012] As a further solution of the present invention: the power distribution unit also supplies power to other devices.

[0013] As a further solution of the present invention: the intelligent power module further includes a lightning protection unit, and the lightning protection unit is used to prevent lightning from striking the equipment mounted on the intelligent pole.

[0014] As a further solution of the present invention: the lighting power management module includes a controller and a protection element, the lighting component is connected to the wiring terminal of the lighting power supply circuit through the protection element, the controller is communicated with the control center, and the control center controls the switch of the lighting component through the controller.

[0015] As a further solution of the present invention: the intelligent power module is also connected to a metering module, which respectively measures the power consumption of each branch of the intelligent power module and is connected to the control center for communication.

[0016] As a further solution of the present invention: each branch of the intelligent power module is provided with an overload protection element, and the overload protection element is used to disconnect the branch connection after the metering value of the metering module exceeds the set threshold of the branch to which it is connected.

[0017] Compared with the prior art, the beneficial effects of the present invention are: the new multifunctional smart pole power supply system is safe and reliable, and can meet the smart pole power supply needs in multiple scenarios, with high integration, large power consumption requirements and complex environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 4 is a system schematic diagram of an intelligent power supply module in an embodiment of the present invention.

[0019] Figure 2 4 is a system schematic diagram of a lighting power management module in an embodiment of the present invention. DETAILED DESCRIPTION

[0020] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present embodiment disclosure as detailed in the appended claims.

[0021] See also Figure 1-2 In one embodiment of the present invention, a new type of power supply system for a multifunctional smart pole is provided, and a low-voltage substation is externally connected to two or more distribution boxes, including: a power management device, wherein the power management device includes an intelligent power module and a lighting power management module arranged in each smart pole, and the intelligent power module and the lighting power management module respectively supply power to the lighting equipment and the mounted equipment on the smart pole where they are located; an equipment power supply circuit, wherein one distribution box is connected to each of the intelligent power modules in sequence through the equipment power supply circuit, and the output phase lines of adjacent intelligent power modules are different from each other; a lighting power supply circuit, wherein another distribution box is connected to each of the lighting power management modules in sequence through the lighting power supply circuit, and the output phase lines of adjacent lighting power management modules are different from each other.

[0022] Specifically, the low-voltage power supply adopts a three-phase five-wire system. The low-voltage substation is connected to two distribution boxes, namely the equipment AC distribution box and the lighting AC distribution box. The equipment AC distribution box is connected to the equipment power supply circuit for the equipment power supply of the smart pole, and the lighting AC distribution box is connected to the lighting power supply circuit for the lighting power supply of the smart pole. The equipment power supply circuit and the lighting power supply circuit are laid separately to ensure the power supply and safety of various functions of the smart pole on the main line. A cable is laid from the equipment AC distribution box to the terminal block of the smart pole equipment compartment, and another cable is laid from the lighting AC distribution box to the 4P leakage protection circuit breaker dedicated to lighting in the smart pole. Two 380V three-phase five-wire incoming lines, one of which is a single-phase (A phase or B phase or C phase) of the equipment power supply circuit or the lighting power supply circuit, the neutral line N and the protective ground line PE directly enter the distribution unit, and the other two phases are connected to the next smart pole through the terminal block or the lighting-specific 4P leakage protection circuit breaker. The smart pole adopts hand-in-hand power connection. The wiring circuit from the smart pole body ensures that every three adjacent smart poles are independent in the smart pole body. As long as the main line is not disconnected, the power failure of a single smart pole will not affect the other two, further ensuring the stability and safety of electricity use.

[0023] The relevant mounted equipment on the smart pole is powered by the intelligent power module. The electromagnetic compatibility of the intelligent power module shall comply with the Level 3 index requirements in GB / T 17626.2-2018, GB / T 17626.5-2019, and GB / T 17626.6-2017, and shall meet the industrial-grade wide temperature and humidity environment requirements: working temperature -20℃~70℃, humidity 5%~95% (no condensation); if the intelligent power module is installed in an equipment compartment with waterproof and dustproof design, the protection level shall not be lower than IP20. If it is directly installed externally, the protection level shall not be lower than IP65, and the salt spray protection level shall meet the relevant requirements of GB / T 10125-2012 and GB / T 6461-2002.

[0024] If the municipal power cannot be supplied independently in certain situations and scenarios, or as an emergency supplement when the normal power supply of the municipal power is interrupted, in a preferred embodiment provided by the present invention, the power management device also includes a battery pack, which is built into the smart pole and supplies power to the smart power module and the lighting power management module. An external battery cabinet can also be installed for long-term backup power.

[0025] To sum up, the new multifunctional smart pole power supply system is safe and reliable, and can meet the smart pole power supply needs in multiple scenarios, with high integration, high power consumption requirements and complex environments.

[0026] See also Figure 1 In another embodiment of the present invention, the intelligent power module includes a power distribution unit, a lightning protection unit and a grounding unit. The power distribution unit is connected to the equipment power supply circuit and outputs multiple branches to supply power to each device mounted on the smart pole. The grounding unit is connected to the ground wire of each device mounted on the smart pole; the power distribution unit has one or more output voltages; the power distribution unit also supplies power to other devices; the lightning protection unit is used to prevent lightning from striking the equipment mounted on the smart pole.

[0027] There are multiple smart poles, namely smart pole A, smart pole B, smart pole C, smart pole D, to smart pole M (M is a constant); each smart pole is equipped with a distribution unit, and the equipment power supply circuit of the equipment AC distribution box is connected to wiring terminals at each smart pole, and each distribution unit is connected through the wiring terminals, and the distribution unit then supplies power to the mounted equipment of the smart pole.

[0028] The lightning protection unit is configured as follows: one end of the ground wire is connected to the output phase line and neutral line of each distribution unit, and the other end is connected to the grounding bus, and then the grounding bus is connected to the grounding body. The grounding body is made of galvanized flat steel; the galvanized flat steel is inserted into the main reinforcement of the pole foundation. When connecting the power, attention should be paid to power connection safety and grounding protection measures for the pole and related equipment to prevent direct lightning strikes. Equipotential bonding is adopted. The exposed conductive parts of the smart pole, equipment warehouse and distribution box are all connected to the PE wire grounding body, and the grounding resistance value must meet the requirements after measurement.

[0029] The other equipment mentioned mainly refers to special scenarios such as the operator's 5G base station, the public security video surveillance, and the traffic police's law enforcement video acquisition module. The power is supplied by the distribution unit, which uses multiple branch air switches. During maintenance, only the air switch of the corresponding equipment needs to be disconnected. The strong current input is equipped with a main switch, and has leakage monitoring and leakage protection functions. For the convenience of separate maintenance, each mounted device also has a branch protection switch, and an electromagnetic residual current protector with intelligent reclosing function is used; the power supply line of each equipment module is orderly separated in the pole body to ensure the safety of strong and weak current lines.

[0030] See also Figure 2 In another embodiment of the present invention, the lighting power management module includes a controller and a protection element, the lighting component is connected to the wiring terminal of the lighting power supply circuit through the protection element, the controller is communicatively connected to the control center, and the control center controls the switch of the lighting component through the controller.

[0031] The lighting power supply circuit supplies power to the lighting components of each smart pole through the wiring terminals, that is, one of the phase lines and the neutral line is connected to the LED driving power supply of the lighting component through the current-operated protection circuit breaker, and then the LED driving power supply drives the LED lamp to emit light to achieve lighting; the LED driving power supply is connected to a controller (single lamp controller) through an intelligent lighting control line, and the single lamp controller is communicated with the control center, and the control center controls the switch of each LED lamp through the single lamp controller to achieve remote control.

[0032] See also Figure 1 , 2 In another embodiment of the present invention, the intelligent power module is also connected to a metering module, which measures the power consumption of each branch of the intelligent power module respectively and is communicated with the control center; each branch of the intelligent power module is provided with an overload protection element, and the overload protection element is used to disconnect the branch connection after the metering value of the metering module exceeds the set threshold of the branch to which it is connected; the set threshold is set according to the rated power of the equipment of the connected branch.

[0033] Specifically, there are 101 smart poles; the 101 smart poles are distributed in two adjacent roads, wherein 66 smart poles are arranged on the first road, and 35 smart poles are arranged on the second road, and the average power consumption of each smart pole is 3KW.

[0034] The low-voltage power supply adopts a three-phase five-wire system. From the low-voltage substation 0.4KV, two terminals are connected to the power switches 400A and 250A. One of the main equipment lines is connected to the power terminal 400A to lay cables to the 250A capacity equipment AC distribution box D01 for powering the equipment of the smart pole. The equipment AC distribution box D01 is divided into four routes to lay cables to power the 66 smart pole equipment on the first route, and one route to lay cables to power the 35 smart pole equipment on the second route. Another main lighting line is connected to the power terminal 250A to lay cables to the 160A capacity lighting AC distribution box D02 for lighting power supply of the smart pole. The lighting AC distribution box D02 is divided into two routes to lay cables to power the 66 smart pole lighting on the first route, and one route to lay cables to power the 35 smart pole lighting on the second route.

[0035] The circuit cable of the smart pole equipment is connected to the terminal block of the equipment warehouse, and the 380V three-phase five-wire enters the pole body, of which the single-phase L1, the neutral line N, and the protective ground line PE are connected to the distribution unit and the lightning protection unit respectively, and the remaining two phases are connected to the next pole body at the terminal block. The 380V three-phase five-wire circuit of the smart pole lighting circuit enters the pole body, of which the single-phase L1, the neutral line N, and the protective ground line PE are connected to the 4P leakage protection circuit breaker (residual current operated circuit breaker) dedicated to the equipment warehouse lighting, and the remaining two phases are connected to the next pole body at the circuit breaker. The smart pole adopts the hand-in-hand power connection method.

[0036] The smart pole-related mounted equipment is powered by the intelligent power supply module of the intelligent power supply integrated in the pole equipment warehouse. The intelligent power supply has multi-channel and multi-voltage level outputs, including one 220V AC input, 220V AC output, +12V DC output, +24V DC output, +48V DC output and other voltage level outputs in various formats and multi-branch outputs to meet the power supply modes of different application scenarios. For example, scene modules such as city broadcasting, LED information display screens, environmental monitoring, meteorological monitoring, and vehicle-road collaboration can be centrally powered and uniformly managed and maintained by the intelligent power supply. This can maximize the integration of power modules, reduce the space and operation and maintenance costs of the pole equipment warehouse, improve the efficiency of equipment power access and more effectively control the power consumption of pole equipment.

[0037] The lightning protection grounding of the lightning protection unit adopts the TN-S grounding system, and the D01 connection line of the equipment AC distribution box is laid with a dedicated PE line (YJV-1*50mm 2 ), and lay a dedicated PE line (YJV-1*16mm 2), special PE cables (YJV-1*50mm) are laid throughout the two circuits from the equipment AC distribution box D01 and the lighting AC distribution box D02 to the smart pole equipment and lighting power supply. 2 ) Each smart pole is reliably grounded, the pole body and the end of the line need to be grounded, connected to the grounding body through the grounding busbar, and finally connected to the main reinforcement of the pole body foundation.

[0038] In summary, the multifunctional smart pole new power supply system is safe and reliable, and can meet the smart pole power supply needs of urban road construction in multiple scenarios and with high power consumption requirements.

[0039] The working principle of the present invention: the low-voltage power supply adopts a three-phase five-wire system, and the low-voltage substation is connected to two distribution boxes, namely the equipment AC distribution box and the lighting AC distribution box. The equipment AC distribution box is connected to the equipment power supply circuit for the equipment power supply of the smart pole, and the lighting AC distribution box is connected to the lighting power supply circuit for the lighting power supply of the smart pole. The equipment power supply circuit and the lighting power supply circuit are laid separately to ensure the power supply and safety of various functions of the smart pole on the main line. A cable is laid from the equipment AC distribution box to the terminal block of the smart pole equipment compartment, and another cable is laid from the lighting AC distribution box to the 4P leakage protection circuit breaker dedicated to lighting in the smart pole. Two 380V three-phase five-wire incoming lines, one of the equipment power supply circuit or the lighting power supply circuit has a single phase (A or B or C), a neutral line and a protective ground line PE directly into the distribution unit, and the other two phases are connected to the next smart pole through the terminal block or the lighting dedicated 4P leakage protection circuit breaker.

[0040] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the disclosure in the specification and examples. This application is intended to cover any variations, uses or adaptations of the present disclosure, which follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the claims.

[0041] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A new type of multifunctional intelligent pole power supply system, a low-voltage substation is connected to two or more distribution boxes, namely, an equipment AC distribution box and a lighting AC distribution box, characterized in that: include: A power management device, the power management device comprising an intelligent power module and a lighting power management module arranged in each smart pole, the intelligent power module and the lighting power management module respectively supply power to the lighting equipment and the mounting equipment on the smart pole where they are located; An equipment power supply circuit, wherein an equipment AC distribution box is connected to each of the intelligent power modules in sequence through the equipment power supply circuit, and output phase lines of adjacent intelligent power modules are different from each other; Lighting power supply circuit, another lighting AC distribution box is connected to each of the lighting power management modules in sequence through the lighting power supply circuit, and the output phase lines of adjacent lighting power management modules are different from each other, the intelligent power module includes a distribution unit and a grounding unit, the distribution unit is connected to the equipment power supply circuit, and outputs multiple branches to supply power to each device mounted on the intelligent pole, the grounding unit is connected to the ground wire of each device mounted on the intelligent pole, the intelligent power module also includes a lightning protection unit, the lightning protection unit is used to prevent lightning from striking the equipment mounted on the intelligent pole, the lightning protection unit is configured as: one end of the ground wire is connected to the output phase line and neutral line of each distribution unit, the other end is connected to the grounding bus, and then the grounding bus is connected to the grounding body, the grounding body is made of galvanized flat steel; the galvanized flat steel is inserted into the main reinforcement of the pole body foundation, the lighting power management module includes a controller and a protection element, the lighting component is connected to the wiring terminal of the lighting power supply circuit through the protection element, the controller is connected to the control center for communication, and the control center controls the switch of the lighting component through the controller.

2. The multifunctional intelligent pole new power supply system according to claim 1 is characterized in that: The power management device also includes a battery pack, which supplies power to the intelligent power module and the lighting power management module.

3. The multifunctional intelligent pole new power supply system according to claim 1 is characterized in that: The power distribution unit has one or more output voltages.

4. The multifunctional intelligent pole new power supply system according to claim 1 is characterized in that: The power distribution unit also supplies power to other devices.

5. The multifunctional intelligent pole new power supply system according to claim 1 is characterized in that: The intelligent power module is also connected to a metering module, which respectively measures the power consumption of each branch of the intelligent power module and is connected to the control center for communication.

6. The multifunctional intelligent pole new power supply system according to claim 5 is characterized in that: Each branch of the intelligent power module is provided with an overload protection element, and the overload protection element is used to disconnect the branch connection after the metering value of the metering module exceeds the set threshold value of the branch connected to it.

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