A street lamp and box transformer integrated intelligent control device and method

Abstract

This invention discloses an integrated intelligent control device and method for streetlights and transformer substations, belonging to the technical field of road lighting systems. The device includes a transformer substation and an integrated intelligent control unit built into its low-voltage compartment. This unit includes a microprocessor, a satellite positioning module, a wireless communication module, and an interface adapter and drive module. The microprocessor is configured to: obtain the theoretical sunrise / sunset times daily based on the geographical coordinates and real-time network time obtained through satellite positioning, calculate the actual on / off times of the lights by combining this with a preset offset, and drive the actuators. The method includes location and time initialization, astronomical clock acquisition, adaptive control strategy, instruction generation and distribution, and closed-loop feedback for status monitoring. This invention applies edge computing to traditional transformer substations, solving the problems of existing technologies such as reliance on photosensitive elements, low control precision, lack of adaptability, and inability to remotely interact, thus achieving precise, adaptive, and perceptive intelligent streetlight control.

Description

Technical Field

[0001] This invention belongs to the technical field of road lighting systems, specifically relating to an integrated intelligent control device and method for streetlights and transformer substations. Background Technology

[0002] In urban road lighting systems, box-type transformers (box-type substations) serve as the core of power distribution, responsible for converting high-voltage electrical energy into low-voltage electrical energy and transmitting it externally. Streetlights, as terminal loads, rely on independent streetlight control boxes or distributed individual lamp controllers for their start-up, shutdown, monitoring, and control.

[0003] Currently, mainstream outdoor street light control solutions fall into two main categories: one is the "substation + independent street light control box" solution, where a separate control box is installed outside the substation and connected to each street light via dedicated wiring. This results in a bulky structure, occupies additional land, and incurs high wiring costs. The other is the "independent control per light" solution, where a control module is embedded inside each street light. Hardware costs increase linearly with the number of street lights, and multi-light coordination is difficult.

[0004] To overcome the aforementioned shortcomings, some attempts have emerged in the prior art to integrate control functions with the transformer substation. For example, Chinese invention patent CN104518441B discloses a "single-phase American-style transformer substation for streetlights." This solution integrates discrete electrical components such as light-controlled switches and time-controlled switches into the low-voltage compartment of the transformer substation, and realizes the automatic start and stop of streetlights through hardware logic.

[0005] However, this technical solution essentially involves moving individual components into the transformer substation, only solving the integration problem of "physical location," and still has fundamental flaws:

[0006] 1. Relying on photosensitive elements, it is susceptible to dust accumulation and weather interference, which can cause the start and stop times to drift; the time-controlled switch requires repeated manual adjustment according to the season and geographical location and cannot be self-adaptive.

[0007] 2. It does not introduce computing units with data processing and decision-making capabilities, making it impossible to achieve dynamic and adaptive control based on multi-source data, and it also lacks remote upgrade capabilities.

[0008] 3. It can only start and stop streetlights, but cannot monitor and analyze the power supply status of streetlights or the operating parameters of the transformer itself in real time, and cannot actively alarm and locate faults.

[0009] 4. Parameter adjustment must be performed on-site physically, and cannot be remotely intervened in real time, resulting in a serious delay in response to emergencies.

[0010] In conclusion, existing technologies, represented by CN104518441B, remain in the era of automated electrical control and cannot meet the intelligent requirements of smart cities for road lighting systems, which demand precision, adaptability, perception, and strong interactivity. Summary of the Invention

[0011] This invention provides an integrated intelligent control device and method for streetlights and transformer substations. The device includes a transformer substation and an integrated intelligent control unit built into its low-voltage compartment. This unit includes a microprocessor, a satellite positioning module, a wireless communication module, and an interface adapter and drive module. By incorporating edge computing into the traditional transformer substation, it solves the problems of existing technologies such as reliance on photosensitive elements, low control precision, lack of adaptability, and inability to remotely interact. This achieves precise, adaptive, and perceptive intelligent streetlight control, thus addressing the problems mentioned in the background section.

[0012] To achieve the above objectives, the present invention provides the following technical solution:

[0013] An integrated intelligent control device for streetlights and transformer substations includes a transformer substation, which has a high-voltage compartment, a transformer compartment and a low-voltage compartment. The device is characterized by further including an integrated intelligent control unit, which is physically independently packaged and completely built into the low-voltage compartment of the transformer substation, and is electrically connected to the power distribution circuit in the low-voltage compartment.

[0014] The integrated intelligent control unit includes:

[0015] The microprocessor serves as the core unit for executing computational and control logic.

[0016] The satellite positioning module is communicatively connected to the microprocessor and is used to obtain the geographical coordinates of the transformer substation in real time.

[0017] The wireless communication module is connected to the microprocessor and is used to access the wireless network, synchronize the network real-time time, and interact with the remote meteorological data server or cloud management platform.

[0018] The interface adapter and driver module are electrically connected to the microprocessor and the power supply control interface and status monitoring interface in the low-voltage room, respectively. They are used to receive instructions from the microprocessor to drive the actuator in the low-voltage room and to collect the electrical parameters of the street light circuit.

[0019] Furthermore, the microprocessor is configured to perform the following operations:

[0020] It receives geographic location information from the satellite positioning module and real-time time information from the wireless communication module;

[0021] The wireless communication module sends a request to the designated meteorological data interface based on the geographical location information to obtain the theoretical sunrise and sunset times corresponding to the geographical location and changing with the real-time date.

[0022] According to the preset control strategy, the real-time time is compared with the theoretical sunrise / sunset time to generate street light start / stop control commands;

[0023] The control commands are sent to the actuator in the low-pressure chamber via the interface adapter and drive module.

[0024] A method for integrated intelligent control of streetlights and transformer substations, applied to the aforementioned device, includes the following steps:

[0025] Step S1: Location and Time Initialization: After the integrated intelligent control unit is powered on, the satellite positioning module automatically locates itself to obtain the current geographical coordinates, and the wireless communication module synchronizes with the network time server to obtain high-precision real-time time;

[0026] Step S2: Astronomical clock acquisition: Based on the geographical location and current date obtained in step S1, the microprocessor accesses the preset cloud astronomical clock service interface through the wireless communication module to accurately obtain the theoretical sunrise and theoretical sunset times for that geographical location on that day.

[0027] Step S3: Adaptive control strategy execution: The microprocessor executes the built-in adaptive control logic, sets a configurable time offset based on the theoretical sunrise / sunset time, and calculates the actual target lighting time and lighting time.

[0028] Step S4: Command generation and issuance: When the real-time time matches the target light-on or light-off time, the microprocessor generates the corresponding control command and outputs it to the contactor or relay in the low-voltage room through the interface adapter and drive module to control the on / off of the street light circuit.

[0029] Step S5: Status monitoring and closed-loop feedback: After executing the control command, the microprocessor collects the current and voltage signals of the street light circuit in real time through the interface adapter and drive module to determine whether the street light is starting and stopping normally; if an abnormality is detected, it immediately sends a fault alarm information to the cloud management platform through the wireless communication module.

[0030] Furthermore, the method also includes a collaborative protection step: the microprocessor, through an interface adapter and driver module, collects the temperature, oil level, or load rate parameters inside the box-type transformer in real time; when the transformer is detected to be in an overload or over-temperature state, the microprocessor prioritizes the execution of a load reduction strategy and disconnects the power supply to the streetlights of non-critical circuits according to a preset priority.

[0031] Furthermore, the method also includes a dual-mode manual intervention step: the wireless communication module receives remote control commands from the cloud management platform, and the microprocessor responds to the remote control commands by performing forced lighting, forced lighting, or temporary policy adjustments; at the same time, a local human-machine interface electrically connected to the microprocessor is provided on the low-voltage room cabinet door for receiving local manual commands from the field operator.

[0032] Compared with the prior art, the beneficial effects of the present invention are:

[0033] 1. Existing technologies rely on physical photosensitive elements and manual timing, which are susceptible to interference and have low accuracy. This invention introduces a satellite-based adaptive astronomical clock algorithm into transformer substation control for the first time, enabling street light start-up and stop times to accurately match the local daily sunrise and sunset patterns, achieving fully automatic, maintenance-free, and precise control.

[0034] 2. This invention establishes a two-way information flow between the street light load and the transformer power supply through a microprocessor and interface module, realizing a closed-loop coordination of "control-monitoring-protection". It can proactively detect and report faults, and proactively implement load reduction protection when the transformer is overloaded, thus building a proactive operation and maintenance system.

[0035] 3. This invention uses an embedded microprocessor as its core and, through software-defined control strategies combined with a wireless communication module, enables the device to become an edge node in the Internet of Things (IoT), supporting remote adjustment of strategies, issuance of commands, and firmware upgrades. Simultaneously, the highly integrated solid-state electronic module is smaller and more reliable.

[0036] 4. It supports dual-mode real-time intervention of "remote one-click control" and "local human-computer interaction", reducing the response time from "hours" to "seconds" of the existing technology, which is of great significance for ensuring urban traffic safety and emergency command. Attached Figure Description

[0037] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. Obviously, the drawings described below are merely some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0038] In the attached diagram:

[0039] Figure 1 This is a schematic diagram of the main structure of an embodiment of the present invention.

[0040] Figure 2 This is a schematic diagram of the electrical connection structure of the integrated intelligent control unit according to an embodiment of the present invention.

[0041] Figure 3 This is a diagram showing the internal module connections of the integrated intelligent control unit in an embodiment of the present invention.

[0042] Figure 4 This is a schematic diagram of the intelligent control logic for streetlights and transformer substations in an embodiment of the present invention.

[0043] In the diagram: 100 - Box-type transformer; 110 - High-voltage compartment; 120 - Transformer compartment; 130 - Low-voltage compartment; 200 - Integrated intelligent control unit; 210 - Microprocessor; 220 - Satellite positioning module; 230 - Wireless communication module; 240 - Interface adapter and drive module; 300 - Heavy-duty connector; 400 - Molded case circuit breaker; 500 - Main contactor; 600 - Current transformer. Detailed Implementation

[0044] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0045] Example 1: Please refer to Figures 1-2 This embodiment provides an integrated intelligent control device for streetlights and transformer substations. The device includes a transformer substation 100, which is internally divided into a high-voltage compartment 110, a transformer compartment 120, and a low-voltage compartment 130.

[0046] Unlike existing technologies (such as CN104518441B) that directly mount discrete components such as light-controlled switches and time-controlled switches on the low-voltage compartment panel, this invention features an integrated intelligent control unit 200. This unit 200 is a separate, highly integrated electronic module, fixedly mounted inside the low-voltage compartment 130 in a quiet area away from heat-generating components using a bracket. The unit 200's housing is an IP67-rated waterproof and dustproof metal casing to withstand potential condensation and dust environments inside the transformer substation.

[0047] The low-voltage side of unit 200 is electrically connected to the power distribution circuit within low-voltage compartment 130 via a waterproof, heavy-duty connector 300. Specifically, this includes:

[0048] The power supply line connected to the outgoing side of the incoming molded case circuit breaker 400;

[0049] A control signal output line connected to the coil of the main contactor 500 used to control the street light circuit;

[0050] A status monitoring input line connected in series with a current transformer 600 and a voltage sampling terminal in the street light power supply circuit.

[0051] Please see Figure 3 The integrated intelligent control unit 200 specifically includes:

[0052] Microprocessor 210: Selects STM32L series low-power ARM Cortex-M core processor, responsible for core logic operations.

[0053] Satellite positioning module 220: adopts u-bloxNEO-M8N multi-mode positioning module, supports GPS / BeiDou / GLONASS, and is connected to microprocessor 210 through UART interface to output the precise latitude and longitude coordinates of the transformer.

[0054] Wireless communication module 230: This module uses a Quectel BC26NB-IoT module and connects to the microprocessor 210 via a USART interface. This module is used to connect to operator base stations and enable communication with the cloud-based time server NTP and meteorological data API interfaces.

[0055] Interface adapter and driver module 240: includes signal isolation circuit, relay driver circuit, and analog signal acquisition circuit. The input terminals are connected to the GPIO and ADC pins of the microprocessor 210; the output terminals are connected to the aforementioned waterproof heavy-duty connector 300. Its function is to convert the 3.3V logic level signal from the microprocessor 210 into a 24V / 1A drive signal capable of driving an external industrial contactor coil; simultaneously, it isolates and converts external 4-20mA or 0-10V analog signals (representing current and voltage) into digital signals recognizable by the microprocessor 210.

[0056] In this embodiment, the local human-machine interface is an industrial-grade resistive touchscreen installed on the door of the low-voltage compartment 130, which is connected to the UART interface of the microprocessor 210 via an RS485 bus. In addition to providing forced control buttons such as "manually turn on the lights" and "manually turn off the lights," the touchscreen also displays real-time key operating parameters such as the current latitude and longitude of the transformer, real-time time, the calculated sunrise and sunset times for the day, the current / voltage values ​​of each street light circuit, and the internal temperature of the transformer. After the on-site operator is authorized by entering a password, they can directly modify the control parameters on the screen. The modified parameters are saved by the microprocessor 210 to its internal EEPROM.

[0057] Please see Figure 4 This embodiment also provides an intelligent control method using the above-mentioned device, including the following steps:

[0058] Step S1: System Initialization and Data Acquisition

[0059] After the integrated intelligent control unit 200 is powered on, the microprocessor 210 first initializes the peripherals. Then, it drives the satellite positioning module 220 to perform positioning until valid latitude and longitude coordinates are obtained (e.g., 31°27'N, 120°18'E). At the same time, the microprocessor 210 communicates with the NTP time server through the NB-IoT module 230 to calibrate the local RTC accuracy.

[0060] Step S2: Astronomical clock calculation

[0061] The microprocessor 210 sends the acquired latitude and longitude coordinates and the current date to the designated meteorological data service provider's API via an HTTP GET request through the NB-IoT module 230. It then parses the returned JSON data to obtain the theoretical sunrise time (e.g., 05:12:23 AM UTC+8) and theoretical sunset time (e.g., 18:45:51 PM UTC+8) for the day.

[0062] Step S3: Adaptive control strategy execution

[0063] The microprocessor 210 has preset configurable control parameters in its internal memory: "sunset early light-on offset" is set to 30 minutes, and "sunrise late light-off offset" is set to 20 minutes. The microprocessor 210 calculates the following based on the theoretical time in step S2:

[0064] Lights-on time = Theoretical sunset time (18:45:51) - Offset (30 minutes) = 18:15:51.

[0065] Lights out time = Theoretical sunrise time (05:12:23) + offset (20 minutes) = 05:32:23.

[0066] The microprocessor 210 starts an internal timer to compare the current real-time time with the calculated target time in real time.

[0067] Step S4: Instruction Generation and Execution

[0068] When the real-time time reaches 18:15:51, the GPIO pin of the microprocessor 210 outputs a high-level signal. This signal, after being isolated and amplified by the interface adapter and driver module 240, energizes the coil of the main contactor 500 in the low-voltage chamber 130, closing the main contacts, connecting the power supply to the street light circuit, and illuminating the streetlights. Similarly, at 05:32:23 the next day, the microprocessor 210 outputs a low-level signal, de-energizing the contactor coil and turning off the streetlights.

[0069] Step S5: Condition Monitoring and Fault Alarm

[0070] After the streetlights are turned on, the microprocessor 210 continuously collects the secondary side signal of the current transformer 600 through the interface adapter and the driver module 240. If, 30 seconds after the light-on command is issued, the circuit current is detected to be continuously lower than the set "normal lighting threshold" (e.g., 0.5A), it is determined that the streetlight is not lighting normally or the circuit is open. The microprocessor 210 immediately records the fault type and timestamp, and reports the message "[Critical Alarm] Streetlight circuit fault, current loss" to the cloud-based smart lighting management platform through the NB-IoT module 230, and automatically locates the transformer substation on the platform's GIS map.

[0071] Collaborative Protection Example

[0072] On hot summer nights, the temperature sensor inside transformer room 120 detects a continuous rise in temperature exceeding a preset threshold of 85°C. This temperature signal is transmitted to microprocessor 210 via interface module 240. Microprocessor 210 determines that the transformer is on the verge of overload and immediately executes a collaborative protection strategy: first, it sends a "[Warning] Transformer overheating, reduce load" message to the platform via NB-IoT module 230; then, according to preset priorities (e.g., decorative lighting circuits have the lowest priority), it controls another intermediate relay to disconnect some non-core landscape lighting circuits, reducing the transformer load rate. Once the temperature returns to normal, power to that circuit is automatically restored.

[0073] "Midnight Light" Multi-Circuit Independent Control Extension

[0074] In another application scenario, the low-voltage room 130 contains three independent contactors, controlling the full-night light circuit, the half-night light circuit, and the landscape light circuit respectively. The microprocessor 210 stores a more refined control strategy: based on the calculated theoretical sunset time, all three circuits are turned on simultaneously; based on the theoretical sunrise time, the full-night light circuit is turned off at sunrise; the half-night light circuit is turned off at 2:00 AM; and the landscape light circuit is turned off at 0:00 AM. The microprocessor 210 compares the RTC time in real time and independently controls the on / off state of the three contactors at the corresponding time points through the interface adapter and three different output pins of the driver module 240.

[0075] Power failure memory and automatic recovery

[0076] The integrated RTC within the microprocessor 210 has an independent backup battery, ensuring accurate timekeeping even in the event of a complete power outage to the transformer substation. Simultaneously, the microprocessor 210 stores the most recently acquired geographic coordinates, the sunrise and sunset times for the current day, and all user-configured control parameters in its internal EEPROM. Upon restoration of power to the transformer substation, the microprocessor 210 does not require relocation or acquisition of the astronomical clock; it can directly load the valid data from the EEPROM and immediately resume normal control logic based on the current RTC time.

[0077] Example of remote and local dual-mode intervention

[0078] When a city experiences a sudden downpour with extremely low visibility, requiring streetlights to be turned on ahead of schedule, the on-duty personnel at the city lighting management center select the transformer substation on the platform software and click "Force Lights On." The platform command is sent to the integrated intelligent control unit 200 via the 4G / NB-IoT network. After parsing the command, the microprocessor 210 immediately sets the forced lights-on flag, executing the lights-on operation immediately regardless of whether the current time has arrived. Simultaneously, on-site inspection personnel can also use the touchscreen installed on the 130 cabinet door of the low-voltage room, enter a password, and click the "Manual Lights On" button. This signal is sent directly to the microprocessor 210 via the local bus, similarly executing forced lights on.

[0079] In summary, this invention, by introducing an "integrated intelligent control unit," endows traditional transformer substations with edge computing capabilities, solving the inherent problems of low control precision, lack of adaptability, lack of state perception, and lack of remote interaction in existing technologies represented by CN104518441B. It achieves a leap from "automated electrical equipment" to "intelligent Internet of Things node," which is in line with the technological trend of smart city infrastructure development.

[0080] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An integrated intelligent control device for streetlights and transformer substations, comprising a transformer substation (100), wherein the transformer substation (100) is provided with a high-voltage compartment (110), a transformer compartment (120), and a low-voltage compartment (130), characterized in that, It also includes an integrated intelligent control unit (200), which is physically independently packaged and completely built into the low-voltage chamber (130), and is electrically connected to the power distribution circuit in the low-voltage chamber (130); The integrated intelligent control unit (200) includes: Microprocessor (210); The satellite positioning module (220) is communicatively connected to the microprocessor (210) and is used to obtain the geographical coordinates of the transformer substation in real time. The wireless communication module (230) is communicatively connected to the microprocessor (210) and is used to synchronize the real-time network time and interact with the remote meteorological data server. The interface adapter and driver module (240) is electrically connected to the power supply control interface and status monitoring interface in the microprocessor (210) and the low-voltage chamber (130), respectively; The microprocessor (210) is configured to: based on the geographical coordinates and real-time time, obtain the theoretical sunrise and sunset times corresponding to the geographical location and changing with the real-time date through the wireless communication module (230), calculate the actual light switching time according to the preset time offset, generate control commands, and drive the actuator in the low-pressure room (130) through the interface adapter and drive module (240).

2. The integrated intelligent control device for streetlights and transformer substations according to claim 1, characterized in that, The microprocessor (210) is also configured to: collect the temperature, oil level or load rate parameters inside the box transformer (100) in real time through the interface adapter and drive module (240), and when the transformer is detected to be in an overload or over-temperature state, execute a load reduction strategy and cut off the power supply of the street lights in non-critical circuits according to the preset priority.

3. The integrated intelligent control device for streetlights and transformer substations according to claim 1, characterized in that, The wireless communication module (230) is also used to receive remote control commands from the cloud management platform; the low-voltage room (130) cabinet door is provided with a local human-machine interface electrically connected to the microprocessor (210) for receiving local manual commands from the field operator; the microprocessor (210) responds to the remote control command or local manual command to perform forced lighting, forced lighting or temporary strategy adjustment.

4. The integrated intelligent control device for streetlights and transformer substations according to claim 1, characterized in that, The low-voltage side of the integrated intelligent control unit (200) is electrically connected to the power distribution circuit in the low-voltage room (130) via a waterproof heavy-duty connector (300). This electrical connection specifically includes: a power supply line connected to the output side of the incoming molded case circuit breaker (400), a control signal output line connected to the coil of the main contactor (500) used to control the street light circuit, and a status monitoring input line connected to the current transformer (600) and voltage sampling terminal connected in series in the street light power supply circuit.

5. The integrated intelligent control device for streetlights and transformer substations according to claim 1, characterized in that, The microprocessor (210) integrates a real-time clock (RTC) with an independent backup battery and is equipped with an EEPROM. The RTC is used to maintain timing when the main power supply of the transformer is cut off, and the EEPROM is used to store the most recently acquired geographical coordinates, the sunrise and sunset times of the day, and the control parameters configured by the user, so as to realize automatic recovery control after power failure.

6. The integrated intelligent control device for streetlights and transformer substations according to claim 1, characterized in that, The low-pressure chamber (130) is equipped with multiple independent contactors, which control the full-night light circuit, the half-night light circuit and the landscape light circuit respectively; the microprocessor (210) is configured to independently control the on / off of each contactor based on the calculated theoretical sunrise / sunset time and the preset half-night light and landscape light off time.

7. The integrated intelligent control device for streetlights and transformer substations according to claim 3, characterized in that, The local human-machine interface is an industrial-grade resistive touch screen, which is connected to the microprocessor (210) via an RS485 bus. It is used to display the latitude and longitude of the current transformer, the real-time time, the sunrise and sunset times calculated for the day, the current / voltage values ​​of each street light circuit, and the internal temperature of the transformer in real time. After the field operator is authorized by password, he / she can directly modify the control parameters on the local human-machine interface. The modified parameters are saved by the microprocessor (210) to its internal EEPROM.

8. A method for integrated intelligent control of streetlights and transformer substations, characterized in that, Includes the following steps: Step S1: Obtain the geographical coordinates of the box transformer (100) through the satellite positioning module (220) and synchronize the network real-time time through the wireless communication module (230); Step S2: Based on the geographical coordinates and the current date, the microprocessor (210) accesses the cloud astronomical clock service interface through the wireless communication module (230) to obtain the theoretical sunrise and theoretical sunset times for that geographical location on that day; Step S3: The microprocessor (210) uses the theoretical sunrise time and theoretical sunset time as a reference and combines them with a preset configurable time offset to calculate the actual target lighting time and target lighting time. Step S4: When the real-time time matches the target light-on time or the target light-off time, the microprocessor (210) generates the corresponding control command and outputs it to the contactor or relay in the low-voltage room (130) through the interface adapter and drive module (240) to control the on / off of the street light circuit; Step S5: After executing the control command, the microprocessor (210) collects the current and voltage signals of the street light circuit in real time through the interface adapter and driver module (240) to determine whether the street light is starting and stopping normally; if an abnormality is detected, it immediately sends a fault alarm information to the cloud management platform through the wireless communication module (230).

9. The method according to claim 8, characterized in that, It also includes a collaborative protection step: the microprocessor (210) collects the temperature, oil level or load rate parameters inside the box transformer (100) in real time through the interface adapter and drive module (240); when the transformer is detected to be in an overload or over-temperature state, the microprocessor (210) prioritizes the load reduction strategy and cuts off the power supply of the street lights in non-critical circuits according to the preset priority.

10. The method according to claim 8, characterized in that, It also includes a dual-mode manual intervention step: the wireless communication module (230) receives remote control instructions from the cloud management platform, and the microprocessor (210) responds to the remote control instructions by performing forced lighting, forced lighting or temporary policy adjustment; at the same time, the local human-machine interface set on the cabinet door of the low-pressure room (130) receives local manual instructions from the on-site operator and transmits them to the microprocessor (210).

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