Intelligent street lamp protection control system

Abstract

The invention discloses an intelligent street lamp protection control system, and relates to the field of urban intelligent illumination control. The system comprises a cloud platform, a main control unit, a fault detection module, a vacuum contactor network, a plurality of cable anti-theft master stations and a plurality of cable anti-theft slave stations, the main control unit is connected with the vacuum contactor network through the fault detection module, and the cable anti-theft slave stations are connected with the vacuum contactor network through the cable anti-theft master stations. And the cloud platform is connected with the main control unit through a wireless network. According to the invention, humanized'on-demand illumination 'can be satisfied, intelligent, digital and networked control of street lamps is realized, and the intelligent city illumination operation and maintenance management level is improved.

Description

Technical Field

[0001] The present invention relates to the field of urban intelligent lighting control, and in particular to an intelligent street lamp protection control system. Background Art

[0002] As an organic part of urban infrastructure, urban street lighting plays an irreplaceable role in ensuring urban traffic safety, maintaining public order, and beautifying the urban environment. However, the existing urban lighting facilities are old and dilapidated, have a low level of intelligence, and lack adequate protection. They are unable to ensure personal safety and the safety of the equipment themselves in a timely manner. Moreover, the lighting facilities lack intelligent control systems and cannot achieve on-demand lighting and time-sharing control. The on-off time control of some urban lighting facilities is unreasonable, and there is a phenomenon of turning on too early or turning off too late, resulting in energy waste and poor lighting effects. In emergency situations, such as natural disasters, traffic accidents, etc., there is a lack of emergency control of lighting facilities, which affects the rescue work and affects the image of the city and the quality of life of residents.

[0003] At present, some domestic street light distribution cabinet products also have data collection functions, but their functions are not perfect, the communication capabilities are uneven, the communication time is long, the collection parameter accuracy is low, and the equipment data communication is slow. It cannot achieve true intelligent control and cannot meet the functions of power on and off and fault alarm of street lights. When the distribution system fails and the lighting facilities are damaged, such as damage to the vacuum contactor, loss of street light line cables, and leakage of the shell, the problem cannot be discovered and solved in time.

[0004] At present, the intelligent level of street lamp systems in many cities is not high. The way of turning on and off street lamps has always been controlled by time controllers, which has major drawbacks, single functions, and cannot realize multi-group and time-sharing control; it is easy to be damaged, which will cause accidents such as street lamps not being powered on or off, and the failure rate is relatively high and cannot be discovered in time; affected by high and low temperatures or electromagnetic interference and other environmental factors, the system time is prone to garbled codes, resulting in abnormal power on and off, and inconsistent street lamp switches; because the set time is fixed and unchanged, it cannot meet the special and humanized needs of lighting, and it is necessary to adjust the power on and off time of street lamps. The maintenance personnel have to drive to various stations on site to manually adjust the time controller, which wastes manpower and time, increases maintenance costs, and cannot realize intelligent control; in this embodiment, an intelligent data acquisition module and a 4G wireless communication module are used. The data acquisition module includes a voltage collector, a current collector, a power collector and an electric meter, which can respectively collect the load voltage, current, power, power factor, power and other parameters of three-phase 12 roads, and connect to the digital smart cloud platform. The monitoring information can be viewed in real time on the platform to realize the telemetry function of the street lamp. Summary of the invention

[0005] In view of the above-mentioned defects of the prior art, the present invention provides an intelligent street lamp protection control system, including a cloud platform, a main control unit, a fault detection module, a vacuum contactor network, a plurality of cable anti-theft master stations and a plurality of cable anti-theft slave stations. The main control unit establishes a connection with the vacuum contactor network through the fault detection module, the cable anti-theft slave station establishes a connection with the vacuum contactor network through the cable anti-theft master station, and the cloud platform establishes a connection with the main control unit through a wireless network.

[0006] Furthermore, a residual current transformer is provided between the cable theft prevention master station and the vacuum contactor network.

[0007] Furthermore, the protection control system of the intelligent street lamp includes an electric energy collection module, and the electric energy collection module is used to collect electric energy parameters of the power supply line.

[0008] Furthermore, the protection control system of the intelligent street lamp includes a lightning protection module, the lightning protection module includes an external lightning protection structure and a surge protector, and the external lightning protection structure includes a conductor material layer coated on the outer surface of the street lamp.

[0009] Furthermore, the protection control system of the intelligent street lamp includes a theodolite time control module and a photoelectric control module, and the theodolite time control module and the photoelectric control module establish a communication connection with the cloud platform through a wireless network.

[0010] Compared with the prior art, the present invention has the following technical effects:

[0011] The present invention can realize precise control of power on and off of street lamps, feedback fault information in the first time, respond in time and perform power-off protection when a fault occurs, integrate remote control, monitoring, protection and adjustment, greatly reduce the manpower and material costs of maintenance, meet the humanized "on-demand lighting", truly realize the intelligent, digital and networked control of street lamps, and improve the level of operation and maintenance management of smart city lighting.

[0012] The concept, specific structure and technical effects of the present invention will be further described below in conjunction with the accompanying drawings to fully understand the purpose, characteristics and effects of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of a specific embodiment of the present invention;

[0014] Figure 2 It is a schematic diagram of the connection structure between a vacuum contactor and an intelligent street lamp according to a specific embodiment of the present invention;

[0015] Figure 3 This is an application effect diagram of a street lamp power distribution system according to a specific embodiment of the present invention;

[0016] Figure 4is a schematic diagram of a surge protector according to a specific embodiment of the present invention;

[0017] Figure 5 The figure is a schematic diagram of intelligent control of the main circuit of a street lamp according to a specific embodiment of the present invention. DETAILED DESCRIPTION

[0018] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0019] like Figure 1 As shown, the intelligent street lamp protection control system includes a cloud platform, a main control unit, a fault detection module, a vacuum contactor network, several cable anti-theft master stations, several cable anti-theft slave stations, a theodolite timing module, a photoelectric control module, a residual current transformer and a lightning protection module, the fault detection module, theodolite timing module, the photoelectric control module, the lightning protection module, the residual current transformer, the cable anti-theft master station and the electric energy acquisition module are respectively connected to the main control unit, the main control unit establishes a communication connection with the cloud platform through a wireless communication network, and the main control unit adopts an embedded ARM processor.

[0020] In the daily operation and maintenance of street lamps, the vacuum contactor in the street lamp distribution box often burns, resulting in huge losses and easily causing safety accidents such as fire. For this reason, in this embodiment, the working state of the vacuum contactor in the system is monitored by the fault detection module, the main control unit is connected to the vacuum contactor network through the fault detection module, and the cable anti-theft slave station is connected to the vacuum contactor network through the cable anti-theft master station. When there is a coil or rectifier bridge failure, the power is cut off and an alarm is given in time to prevent the contactor from burning out and causing a fire. In this embodiment, the main control unit is connected to the vacuum contactor fault detection module by a cable, and the fault detection module is connected to the normally closed point of the auxiliary contact of the vacuum contactor. When the vacuum contactor works abnormally, the ARM processor will get a corresponding signal and perform power-off protection. For example, if the main contact of the vacuum contactor sparks and causes adhesion, the ARM processor will always get a power-on signal. After a certain period of time, an alarm message will be sent to the maintenance personnel to remind them to repair in time, or the circuit board of the vacuum contactor is burned, resulting in the main contact being unable to be attracted within the specified time, causing the street lamp to not be powered on. At this time, a fault signal will also be sent to the ARM processor.

[0021] The frequent theft of urban lighting facilities has seriously affected the image of the city and public safety, and caused significant losses to national property. In order to solve this problem, the digital intelligent cloud platform, cable anti-theft terminal, cable anti-theft master station, and cable anti-theft slave station of this embodiment constitute an anti-theft system to monitor the cable status. The master station and the slave station are connected in parallel in the line to collect the carrier signal in the line. In this embodiment, there is no need to make additional wiring for the existing street light power line, but directly use the power line as a communication medium to monitor the cable status by sending and receiving data packets. The master station and the slave station are connected through power carrier communication. In the daily use of street lights, the master station sends inquiry data packets to the slave station at regular intervals, and the slave station responds immediately after receiving it, and the travel data responds. If the carrier communication is successful, the cable is in a normal state; if the communication fails, it is judged as a cable break alarm, and the master station immediately sends an alarm signal to monitor the operation of the line cable through power carrier technology to prevent loss.

[0022] The anti-theft monitoring system is completed by connecting the anti-theft alarm master station and the ARM processor. When there is AC power on the line, PLC power carrier communication technology is used to complete the communication. When the ARM processor does not detect the terminal signal within a certain period of time, it means that the current cable is stolen. When there is no power on the line, the ARM processor sends an alarm detection signal, which is returned through the alarm terminal to form a communication loop, thereby completing the cable integrity detection. It can also automatically detect abnormal conditions such as external force damage and theft of low-voltage wires and cables in the defense monitoring area, generate an alarm signal, determine the alarm area, and prompt the on-duty personnel to take countermeasures.

[0023] like Figure 2-Figure 3 As shown, in a specific embodiment, both the anti-theft master station and the anti-theft slave station can be implemented using hardware devices currently sold on the market. The vacuum contactors KM1-KM4 are installed in the control box of the intelligent street lamp. Each vacuum contactor carries three loads, A, B, and C, respectively, that is, it carries 3 anti-theft master stations, a total of 12 anti-theft master stations, and each load can carry n street lamps. The anti-theft slave station is installed in the end street lamp pole of each street lamp line. The anti-theft master station communicates with the 12 slave stations through the power line carrier. If the anti-theft master station does not receive a signal from a certain slave station, it proves that the line has been stolen or the line is broken. Figure 3 As shown, load air switches QF1-QF4 are set, and when a line short circuit occurs, the air switches can perform trip protection; AC transformers CT1-CT3 are set to be used in conjunction with the electronic power acquisition module to monitor the current parameters of each phase; the residual current transformers CT4-CT7 are monitored by the embedded ARM processor, and when each line exceeds the set threshold (set to 30mA in this embodiment), the ARM processor issues an alarm prompt, and when necessary, the coil of the vacuum contactor is controlled to cut off the leakage line to achieve the role of leakage protection;

[0024] Leakage faults are hidden and difficult to detect through daily inspections by staff. When leakage is found, it will lead to unnecessary consumption of electricity, which not only increases electricity costs, but also aggravates the waste of energy resources. Severe leakage may cause personal danger and even be transmitted to the vehicle to cause a fire. In order to solve this problem, a residual current transformer is provided between the cable anti-theft main station and the vacuum contactor network. Through the analysis and calculation of the main control unit, a reasonable leakage current value can be set on the digital smart cloud platform, thereby achieving the purpose of leakage detection protection; the residual current transformer is analyzed and calculated by the embedded ARM processor of the main control unit. The ARM processor locates the position of the smart street lamp with leakage fault and generates an alarm signal. The staff promptly investigates and repairs the smart street lamp with leakage fault according to the alarm information, thereby improving the safety performance of the power distribution of the smart street lamp.

[0025] like Figure 2-Figure 3 As shown, under normal circumstances, the residual current transformer has a current vector sum of zero in the three-phase four-wire line of the power system. When leakage occurs, the current vector sum is no longer zero, and the coil of the residual current transformer will induce a corresponding current. In this embodiment, the residual current transformer is purchased from the market, and the residual current transformer is mounted on four cables of load 1 / 2 / 3+neutral line, load 4 / 5 / 6+neutral line, load 7 / 8 / 9+neutral line, and load 10 / 11 / 12+neutral line. The residual current transformer contains a highly sensitive current sensor, which can accurately detect tiny leakage currents.

[0026] The electric energy acquisition module is used to collect the electric energy parameters of the power supply line. In this embodiment, the electric energy acquisition module used is the WB6830R2-P electronic electric energy acquisition module, which can intelligently collect the operating parameters of each phase of the street lamp in real time, such as voltage, current, power, power factor, electricity, frequency, etc., and then perform intelligent calculation and analysis. In this embodiment, the calculation and analysis method includes: monitoring voltage. When the monitored voltage is lower than the set threshold or higher than the set threshold, an undervoltage or overvoltage alarm can be issued; monitoring current. When the monitored current is lower than the set threshold or higher than the set threshold, a line fault or overcurrent alarm can be issued; statistical calculations are performed on the total electricity collected to obtain the electricity value for each day, month or any time period, so as to realize electricity monitoring; the energy saving rate, electricity bill savings and carbon emissions reduced for the month are calculated through the monitored electricity value, so as to monitor the health status of urban lighting in real time.

[0027] The vacuum contactor fault detection module detects the street lamp status parameters and street lamp leakage conditions, and the current monitored by each cable passes through the embedded ARM processor. The leakage threshold is set in the ARM processor. The ARM processor sends the collected signals and data to the digital smart cloud platform. The cloud platform judges and intelligently processes the detected signals. By combining big data, edge computing, intelligent algorithms and Internet of Things means, it is found that the smart street lamp has overvoltage, undervoltage, overcurrent, street lamp power failure, leakage, cable loss, vacuum contactor damage and other faults, and an alarm signal is issued to prompt the relevant staff. The prompt method can adopt the traditional sound and light alarm method, or the issued alarm information can be sent directly to the operation and maintenance personnel's mobile phone or mobile terminal. The alarm information can be sent through the communication network or the Internet, so as to realize the remote signal function of the street lamp lighting intelligent control and protection system.

[0028] Lightning weather may bring serious security threats to the street lamp power distribution system. Therefore, it is very important to take effective lightning protection measures. The intelligent control and protection system solves this problem from a practical point of view. The lightning protection module described in this embodiment includes an external lightning protection structure and a surge protector. The external lightning protection structure includes a conductor material layer coated on the outer surface of the street lamp. The lightning protection module monitors whether the system is struck by lightning on a rainy day, and quickly handles any emergencies that occur, thereby realizing four protection functions (fire protection, lightning protection, theft protection, and electric shock protection). It is suitable for the TN-S three-phase five-wire power supply system. The maximum discharge current of each module can reach 100kA, which is used for the first-level lightning protection of the AC power supply system. Through the cooperation of the front and rear lightning arresters of the lightning protection system, the lightning energy can be released step by step to achieve the purpose of protecting the terminal electrical equipment; the external lightning protection system is combined with the internal lightning protection system. The external lightning protection system mainly uses the conductor material of the street lamp itself (such as metal lamp poles and lampshades) as a lightning rod to avoid fires and personal safety accidents caused by direct lightning strikes. The internal lightning protection uses a surge protector, and its circuit structure is as follows: Figure 4 As shown, the surge protector is only installed in the street light control cabinet, and does not need to be installed on each lamp pole. The so-called internal lightning protection refers to the use of surge protectors to achieve lightning protection in the street light control cabinet and protect the main circuit system of the line. The surge protector is specially designed to withstand the large current and high-energy surge energy absorption of lightning and induced lightning strikes. It can effectively limit the amplitude of lightning overvoltage and transient overvoltage, and can divert a large amount of surge current to the ground, protecting the electrical equipment in the street light distribution system from overvoltage damage.

[0029] The theodolite timing module and the photoelectric control module establish a communication connection with the cloud platform through a wireless network. When performing intelligent control of the power on and off of urban lighting, the control method can select theodolite timing control, photoelectric control, remote monitoring control, or several methods of mutual backup control to achieve single-channel control, multi-channel control, one-time lighting, two-time lighting, and other combined control lighting modes; in this embodiment, the longitude and latitude timing module and the photoelectric control module are combined with the cloud platform to optimize the management and control process of the automated lighting system through an intelligent optimization algorithm. In a specific embodiment, the common functions and requirements of the intelligent lighting system, the intelligent algorithm includes the following aspects:

[0030] 1. Light intensity perception and adjustment algorithm:

[0031] The photoelectric control module senses the light intensity of the surrounding environment and automatically adjusts the brightness or switch status of the lighting equipment based on the preset light intensity threshold. This algorithm ensures that the lighting system can provide appropriate lighting effects under different lighting conditions while saving energy.

[0032] 2. Time control algorithm:

[0033] The latitude and longitude time control module obtains the current time and geographic location information, and automatically adjusts the on / off time of lighting equipment in combination with the preset schedule (such as sunrise and sunset time, weekdays and holidays, etc.). This algorithm can ensure that the lighting system operates according to the predetermined plan in different time periods to meet people's actual needs.

[0034] 3. Scene switching and intelligent scheduling algorithm:

[0035] Automatically switch lighting modes and adjust brightness according to different usage scenarios (such as conference rooms, offices, corridors, etc.) and personnel activities. This algorithm can improve the flexibility and intelligence level of the lighting system and provide users with a more comfortable and personalized lighting experience.

[0036] 4. Energy management and optimization algorithm:

[0037] By analyzing historical and real-time data, predicting future lighting needs and optimizing the operation strategy of the lighting system, this algorithm can help users reduce energy consumption, reduce costs, and improve overall energy efficiency.

[0038] 5. Fault detection and early warning algorithm:

[0039] Real-time monitoring of the operating status and performance parameters of lighting equipment, and immediate warning signals if abnormalities or failures are found. This algorithm can ensure the stability and reliability of the lighting system and avoid losses and impacts caused by equipment failures.

[0040] Through 4G wireless transmission, the on and off of street lights can be automatically or manually controlled remotely to realize the normal power on and off functions of street lights; for some special situations such as rainy, snowy and foggy weather, leadership government inspections, major festivals and celebrations, etc., emergency adjustment control can also be carried out to advance or postpone the switching of lights; the cloud platform can not only control the street light area individually, but also perform full and group control, as well as segmented power on and off, to realize intelligent time-sharing and precise control of street lights. When there is a fault, the faulty line can be accurately located and the power supply of the faulty line can be cut off in time without affecting the normal lighting of other lines, thereby realizing the remote control function of the street lights. The precise positioning method refers to using the cloud platform monitoring function to monitor the loads of each line carried by the street light control cabinet, and pre-set the rated values ​​of each line. When a certain load has overcurrent, overvoltage, undercurrent and other faults, the cloud platform will promptly alarm and determine the problematic line through the alarm information content. During maintenance, all lines will be powered off, and only this line needs to be powered off for maintenance, thereby reducing adverse effects.

[0041] The intelligent control and protection system for street lighting includes a main control unit (embedded ARM processor), a 4G wireless communication module, and a WB6830R2-P electronic power collection module (voltage collector, current collector, power collector, and watt-hour meter). The intelligent street lights are controlled in real time by the central processor, and the voltage, current, power, power factor, and electricity parameters of the intelligent street lights are collected by the intelligent data collection unit. The real-time parameters of the intelligent street lights are fed back to the ARM processor and uploaded to the smart cloud platform. In the event of dangerous situations such as loss of street light line cables, vacuum contactor failure, street light leakage, and lightning strikes in rainy days, timely responses can be made to improve the safety and intelligence of the intelligent street light power distribution control. Intelligent control of the power on and off of urban lighting, real-time monitoring of the health status of urban lighting, monitoring of the safety of lines and devices, and corresponding protection to quickly resolve emergencies. This application can control the on / off lights of each load (street light). When one of the loads (street lights) fails, the ARM processor sends a control command to automatically disconnect this load without affecting the normal lighting of other loads. When a line cable is lost, an alarm message will be issued in time, whether during the day or at night, and the situation will be fed back to the operation and maintenance personnel in time to avoid further losses. When the vacuum contactor fails, the vacuum contactor fault detection module will receive the signal as soon as possible and transmit it to the ARM processor, which will then process and transmit it to the cloud platform. The platform will then send the cause of the fault to the maintenance personnel, reminding them to repair it as soon as possible.

[0042] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. Intelligent street light protection control system, characterized in that: It includes a cloud platform, a main control unit, a fault detection module, a vacuum contactor network, a plurality of cable anti-theft master stations and a plurality of cable anti-theft slave stations. The main control unit establishes a connection with the vacuum contactor network through the fault detection module, the cable anti-theft slave station establishes a connection with the vacuum contactor network through the cable anti-theft master station, and the cloud platform establishes a connection with the main control unit through a wireless network.

2. According to claim 1, the intelligent street lamp protection control system is characterized in that: A residual current transformer is arranged between the cable anti-theft master station and the vacuum contactor network.

3. According to claim 1, the intelligent street lamp protection control system is characterized in that: The protection control system of the intelligent street lamp includes an electric energy collection module, and the electric energy collection module is used to collect electric energy parameters of the power supply line.

4. The intelligent street light protection control system according to claim 1 is characterized in that: The protection control system of the intelligent street lamp comprises a lightning protection module, the lightning protection module comprises an external lightning protection structure and a surge protector, and the external lightning protection structure comprises a conductor material layer coated on the outer surface of the street lamp.

5. According to claim 1, the intelligent street lamp protection control system is characterized in that: The protection control system of the intelligent street lamp includes a theodolite time control module and a photoelectric control module, and the theodolite time control module and the photoelectric control module establish a communication connection with the cloud platform through a wireless network.

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