Remote terminal unit (RTU)-based urban lighting electric leakage remote monitoring method and system and electronic equipment

Abstract

The invention relates to a remote terminal unit (RTU)-based city lighting electric leakage remote monitoring method and system and electronic equipment, and belongs to the technical field of city lighting, and the city lighting electric leakage remote monitoring method comprises the following steps: collecting the electric leakage current of each lighting branch in a polling manner according to a set period; judging whether leakage current exceeding a set threshold value exists or not and whether the leakage duration is greater than a duration threshold value or not; if yes, marking the corresponding lighting branch as an electric leakage branch, and powering off the electric leakage branch; reading reclosing information of the electric leakage branch, wherein the reclosing information comprises current reclosing state information and set reclosing standard information; judging whether the current reclosing state information meets set reclosing standard information or not; if yes, reclosing operation is carried out; and if not, marking the electric leakage branch as a locked state. The method has the beneficial effects of improving the detection rate and the response speed of the electric leakage event of the urban lighting system line.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of urban lighting, and in particular to a remote monitoring method and system for urban lighting line leakage based on an RTU and an electronic device. BACKGROUND

[0002] Currently, the maintenance and troubleshooting of urban lighting systems still rely on regular manual inspection, which is not only inefficient, but also difficult to find potential electrical safety hazards in time. With the expansion of the city size and the increase in the number of lamps, the traditional monitoring method is increasingly difficult to meet the needs of modern city management.

[0003] In related technologies, the remote monitoring scheme for line leakage of urban lighting systems relies on wired networks, such as RS485 bus technology. However, due to the long line and wide distribution of urban lighting systems, the deployment of wired networks is costly and inflexible, greatly reducing the detection rate and response speed of leakage events. SUMMARY

[0004] In order to improve the detection rate and response speed of line leakage events of urban lighting systems, the present application provides a remote monitoring method and system for urban lighting line leakage based on an RTU and an electronic device.

[0005] In a first aspect, the present application provides a remote monitoring method for urban lighting line leakage based on an RTU, which adopts the following technical solution: A remote monitoring method for urban lighting line leakage based on an RTU, taking the RTU as the execution subject, comprising: polling and collecting the leakage current of each lighting branch according to a set period; determining whether there is a leakage current exceeding a set threshold and whether the leakage duration is greater than a duration threshold; if yes, marking the corresponding lighting branch as a leakage branch and powering off the leakage branch; reading the reclosing information of the leakage branch, the reclosing information including current reclosing state information and set reclosing standard information; determining whether the current reclosing state information meets the set reclosing standard information; if yes, performing a reclosing operation; if no, marking the leakage branch as a locked state.

[0006] By adopting the above technical solution, the RTU polls and collects the leakage current of lighting branches at a set period, enabling timely detection of leakage. Once the leakage current exceeds a set threshold and the duration exceeds a time threshold, the leakage branch is immediately marked and power is cut off, effectively preventing safety accidents caused by leakage, such as electric shock hazards and electrical fires, and ensuring the safety of the urban lighting system and surrounding personnel and facilities. By reading the reclosing information of the leakage branch, it determines whether the current reclosing status meets the standard information, thereby deciding whether to perform a reclosing operation. This intelligent control method can quickly restore lighting power supply after the fault is eliminated, reducing the impact on urban lighting; it can also avoid blind reclosing before the fault is eliminated, preventing the fault from expanding, and improving the reliability and stability of power supply. For leakage branches whose current reclosing status meets the set standard information, they are marked as locked, helping maintenance personnel to quickly locate lighting branches with permanent faults, concentrate on fault diagnosis and repair, improve fault handling efficiency, shorten maintenance time, and reduce maintenance costs. The entire monitoring process is based on RTU for remote operation, eliminating the need for manual on-site inspections of each lighting branch, thus saving significant manpower and time costs and improving the detection rate and response speed for leakage events in the urban lighting system. Simultaneously, the monitoring system can acquire leakage information in real time, enabling managers to promptly grasp the operational status of the urban lighting system and make informed and rational decisions.

[0007] Optionally, the steps prior to determining whether there is a leakage current exceeding a set threshold and whether the leakage duration is greater than a duration threshold include: Determine whether the leakage protection function is enabled for each lighting branch; If so, continue to determine whether the lighting branch to be tested is on, and whether the duration of the on-time exceeds the delay judgment time; If so, then determine whether there is a leakage current exceeding the set threshold, and whether the duration of the leakage is greater than the duration threshold.

[0008] By adopting the above technical solution, current polling is only initiated when the branch leakage current monitoring function is active, avoiding invalid scanning of inactive branches and reducing system resource consumption. The addition of the dual condition of "light on status + light on duration > delay judgment duration" effectively eliminates surge current interference (such as cold start current peaks) at the moment of lamp startup, preventing accidental power outages caused by instantaneous current fluctuations.

[0009] Optionally, the step after marking the leakage branch as locked further includes: Generate and send maintenance work orders; Determine whether the maintenance has been completed before the next lighting cycle; If so, perform a manual light-on test on the maintenance branch; If not, issue a maintenance notice and receive an RTU disable command; After maintenance is completed, receive the RTU activation command and perform a manual light-on test on the maintenance branch.

[0010] By adopting the above technical solutions, generating and sending maintenance work orders ensures that professionals can promptly obtain maintenance information on the leakage branch, quickly carry out maintenance work, minimize the impact of the fault, guarantee the normal operation of the urban lighting system, and reduce the inconvenience caused by lighting faults to urban traffic safety and residents' lives. Determining whether maintenance is completed before the next lighting cycle allows for effective supervision and management of the maintenance work. If maintenance is completed before the next lighting cycle, manual lighting tests can be conducted promptly to verify the maintenance effect, ensuring the lighting branch returns to normal operation and improving maintenance efficiency. If maintenance is not completed before the next lighting cycle, issuing a maintenance notice allows citizens to understand the maintenance status of the lighting system in advance, make corresponding travel and life arrangements, reduce the inconvenience caused by lighting faults, and improve citizens' satisfaction with urban lighting management. Receiving RTU disable commands can prevent RTU misoperation or interference with the faulty branch during maintenance, ensuring the smooth progress of maintenance work and reducing unnecessary impact on surrounding residents. Receiving the RTU activation command after maintenance enables the city lighting system to resume remote monitoring, continuing to monitor the operational status of each lighting branch in real time, promptly identifying and addressing any new problems, and ensuring the long-term stable operation of the lighting system. Performing a manual light-on test on the maintained branch again serves as a secondary verification of the maintenance work, ensuring that the lighting branch can function normally after the RTU restarts, further improving the reliability and stability of the city lighting system.

[0011] Optionally, the step of generating and sending the maintenance work order includes: Generate fault signature codes; Based on the fault signature code, a maintenance work order is generated; Obtain the suitability of maintenance personnel in the maintenance personnel database and their distance from the maintenance branch; Send maintenance work orders to the mobile terminal of the maintenance personnel with the highest compatibility and the shortest distance.

[0012] By adopting the above technical solution, maintenance work orders are generated based on fault signature codes, ensuring that the work order content accurately reflects the actual situation of the fault. The suitability of maintenance personnel in the personnel database and their distance from the maintenance branch are obtained, and these two factors are combined to allocate maintenance tasks. High suitability means that maintenance personnel possess the professional skills and experience to solve the fault, enabling them to handle the problem more effectively; while minimal distance ensures that maintenance personnel can quickly reach the site, shortening response time. This method fully leverages the strengths of each maintenance personnel, improves resource utilization efficiency, and avoids wasted time and resources due to unreasonable personnel allocation. Maintenance work orders are sent to the mobile terminals of the maintenance personnel with the highest suitability and shortest distance, ensuring that the most suitable personnel are dispatched for each maintenance task. This not only improves the success rate of fault resolution but also speeds up the maintenance process, reduces power outage time for the lighting system, and ensures the normal operation of urban lighting.

[0013] Optionally, the step of obtaining the suitability of maintenance personnel in the maintenance personnel database and their distance from the maintenance branch includes: Based on the aforementioned maintenance work order, maintenance personnel are initially screened. Obtain the skill scores of the selected maintenance personnel; Obtain the location of the selected maintenance personnel and the maintenance location of the maintenance branch; Calculate the path distance based on the personnel location and the maintenance location; Calculate the distance weight based on the path distance; Obtain the load factor of the selected maintenance personnel; The suitability of the selected maintenance personnel is calculated based on the skill score, the distance weight, and the load coefficient.

[0014] By adopting the above technical solution, preliminary screening of maintenance personnel based on work orders can quickly eliminate personnel lacking the basic ability to handle the fault, narrowing the selection range. This avoids unnecessary evaluation of a large number of irrelevant personnel, saving time and effort and improving the efficiency of overall maintenance task allocation. Obtaining the skill scores of the screened maintenance personnel provides a direct understanding of each person's level in relevant skills. Obtaining the personnel location and maintenance branch location, and calculating path distance and distance weight, fully considers the impact of geographical factors on maintenance tasks. Maintenance personnel closer to the site can reach the site faster, shortening response time, reducing power outage time of the lighting system, and improving the reliability of urban lighting. At the same time, the calculation of distance weight can reasonably reflect the importance of geographical factors in the suitability assessment, making the final suitability calculation more scientific and reasonable. Obtaining the load coefficient of the screened maintenance personnel allows understanding of each person's current workload. Considering the load coefficient can avoid assigning too many tasks to already busy personnel, thereby achieving a balance in the workload of maintenance personnel. This helps improve the work efficiency and quality of maintenance personnel, avoiding errors and delays in troubleshooting due to overwork. The suitability of selected maintenance personnel is calculated based on skill scores, distance weighting, and load coefficients, allowing for a comprehensive assessment of each individual's overall capabilities and their suitability for maintenance tasks from multiple dimensions.

[0015] Optionally, the RTU-based remote monitoring method for urban lighting leakage current further includes: Obtain ambient temperature and humidity data for the lighting branch circuits; Based on the geographical features of the lighting branch, obtain the geographical feature base value; Obtain the actual length of the lighting branch line; Based on the actual length, obtain the line length gain; Obtain the percentage of LED lights in the lighting branch circuit; Based on the environmental temperature and humidity data, the geographical feature baseline value, the line length gain, the proportion of LED lights, and combined with safety boundary constraints, the set threshold corresponding to the lighting branch is calculated.

[0016] By adopting the above technical solutions, it is understood that ambient temperature and humidity affect the insulation performance of electrical equipment, thereby influencing leakage current. Obtaining ambient temperature and humidity data for the lighting branch and incorporating it into the calculation of the set threshold allows the threshold to better reflect the actual operating environment. Different geographical features, such as altitude and terrain, have varying impacts on the operation of electrical equipment. Obtaining a geographical feature baseline value based on the geographical features of the lighting branch and using it to calculate the set threshold fully considers the impact of geographical environmental factors on leakage current. The actual length of the lighting branch affects the probability and severity of leakage current; generally, the longer the line, the greater the likelihood of leakage. Obtaining a line length gain based on the actual line length and incorporating it into the calculation of the set threshold more accurately reflects the impact of line length on leakage current. The electrical characteristics of LED lamps differ from those of traditional lamps, and their varying proportions also affect the leakage current of the lighting branch. Obtaining the proportion of LED lamps in the lighting branch and using it to calculate the set threshold allows the set threshold to better reflect the actual lamp configuration of the lighting branch. By incorporating safety boundary constraints into the calculation of the set threshold, it is ensured that the threshold remains within a reasonable range. This ensures effective detection of leakage current without being overly sensitive to frequent false alarms, thus improving system stability and reliability and enhancing its adaptability to different operating conditions. By comprehensively considering multiple factors such as environmental temperature and humidity data, geographical feature baselines, line length gain, and the proportion of LED lighting fixtures, dynamic adjustment of the set threshold can be achieved. As environmental conditions and lighting branches change, the set threshold can be adjusted accordingly in a timely manner, ensuring the system consistently maintains accurate detection of leakage current and improving system safety and reliability.

[0017] Optionally, the step of calculating the set threshold corresponding to the lighting branch based on the environmental temperature and humidity data, the geographical feature baseline value, the line length gain, the proportion of LED lamps, and in conjunction with safety boundary constraints includes: The ambient temperature and humidity data are input into the constructed temperature and humidity coupling term to obtain the temperature and humidity coupling value; The geographic feature base value and the line length gain are input into the constructed geographic electrical compensation item to obtain the geographic electrical compensation value; The proportion of the LED lights is input into the constructed load characteristic item to obtain the load characteristic value; Based on the temperature and humidity coupling value, the geographical electrical compensation value, the load characteristic value, and the safety boundary constraints, the set threshold corresponding to the lighting branch is calculated.

[0018] Secondly, this application provides a remote monitoring system for urban lighting leakage current based on an RTU, which adopts the following technical solution: A remote monitoring system for leakage current in urban lighting based on an RTU, comprising an RTU, wherein the RTU includes: The data acquisition module is used to poll and collect the leakage current of each lighting branch according to a set period. The judgment module is used to determine whether there is a leakage current exceeding a set threshold and whether the duration of leakage is greater than the duration threshold. The control processing module is used to mark the corresponding lighting branch as a leakage branch and disconnect the power to the leakage branch. The information reading module is used to read the reclosing information of the leakage current branch, the reclosing information including the current reclosing status information and the set reclosing standard information; The judgment module is also used to determine whether the current reclosing status information meets the set reclosing standard information; the control processing module is used to perform a reclosing operation when the judgment module determines that it is yes, and to mark the leakage branch as locked when the judgment module determines that it is no.

[0019] Thirdly, this application provides an electronic device that adopts the following technical solution: An electronic device, comprising: The memory stores an RTU-based remote monitoring program for urban lighting leakage current. A processor is used to execute a program stored in the memory to implement the steps of the above-described RTU-based remote monitoring method for urban lighting leakage current.

[0020] In summary, this application has at least the following beneficial effects: The RTU polls and collects leakage current data from lighting branches at set intervals, enabling timely detection of leakage. Once a leakage current exceeds a set threshold and its duration exceeds the threshold, the leaking branch is immediately marked and power is cut off, effectively preventing safety accidents caused by leakage, such as electric shock and electrical fires, and ensuring the safety of the city's lighting system and surrounding personnel and facilities. By reading the reclosing information of the leaking branch, the RTU determines whether the current reclosing status meets the standard information, thus deciding whether to perform a reclosing operation. This intelligent control method can quickly restore lighting power after the fault is cleared, reducing the impact on city lighting; it also avoids blind reclosing before the fault is cleared, preventing the fault from escalating and improving the reliability and stability of power supply. For leaking branches whose current reclosing status meets the set standard information, they are marked as locked, helping maintenance personnel quickly locate lighting branches with permanent faults, allowing them to focus on troubleshooting and repair, improving fault handling efficiency, shortening maintenance time, and reducing maintenance costs. The entire monitoring process is based on RTU for remote operation, eliminating the need for manual on-site inspections of each lighting branch, thus saving significant manpower and time costs and improving the detection rate and response speed for leakage events in the urban lighting system. Simultaneously, the monitoring system can acquire leakage information in real time, enabling managers to promptly grasp the operational status of the urban lighting system and make informed and rational decisions. Attached Figure Description

[0021] Figure 1 This is the first flowchart of this application; Figure 2 This is the second flowchart of this application; Figure 3 This is the third flowchart of this application; Figure 4 This is the fourth flowchart of this application; Figure 5 This is the fifth flowchart of this application; Figure 6 This is the sixth flowchart of this application. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the appendices in the embodiments of the present invention will be described below. Figure 1 - Appendix Figure 6 The technical solutions in the embodiments of the present invention are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. 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.

[0023] The first embodiment of this application discloses a remote monitoring method for urban lighting leakage current based on an RTU. (Refer to...)Figure 1 As one embodiment of the urban lighting leakage remote monitoring method, the urban lighting leakage remote monitoring method may include S110-S170: S110 polls and collects the leakage current of each lighting branch according to the set period; S120, determine whether there is a leakage current exceeding the set threshold, and whether the duration of leakage is greater than the duration threshold. S130, if so, mark the corresponding lighting branch as a leakage branch and disconnect the power to the leakage branch; S140, read the reclosing information of the leakage current branch. The reclosing information includes the current reclosing status information and the set reclosing standard information. S150, determine whether the current reclosing status information meets the set reclosing standard information; S160, if yes, then perform a reclosing operation; S170, if not, mark the leakage branch as locked.

[0024] Specifically, the RTU sends polling commands to the leakage current sensors of each lighting branch sequentially according to a pre-set acquisition cycle (e.g., 21 seconds per cycle). The polling command includes the sensor's address information to ensure accurate communication with the target sensor. Upon receiving the RTU's polling command, the sensor measures the leakage current of the current lighting branch and returns the measurement data to the RTU according to the agreed communication protocol. The RTU receives and temporarily stores this data. The RTU verifies the received leakage current data, checking its integrity and accuracy; common verification methods include parity checking and CRC checking. If the data verification fails, the RTU records the error information and attempts to acquire the sensor's data again in subsequent polls. If the data verification passes, the RTU converts the raw data returned by the sensor into the actual leakage current value and compares it with a set threshold. To prevent false positives, the leakage current assessment duration should be set to at least two cycles (i.e., at least 42 seconds), with a default minimum of 45 seconds; the duration threshold can be set to 80% of the leakage current assessment duration. Upon initial collection and identification of leakage current, the RTU reports "lighting branch leakage current" information to the lighting system. If the duration of leakage current exceeds the duration threshold, the lighting branch with leakage current is marked as a leakage branch, triggering the RTU to automatically cut off power and reporting "lighting branch automatic power-off alarm" information to the lighting system.

[0025] The reclosing standard information is set as follows: Within each lighting cycle, after the first power outage due to leakage in each lighting branch, the default configuration of two automatic reclosing operations will be executed. One lighting cycle is from 12:00 noon on the first day to 12:00 noon on the second day.

[0026] If the circuit fails to close after two attempts, the leakage circuit will be locked and will not be able to be reclosed.

[0027] If reclosing is successful, the reclosing count is reset. If another leakage current outage occurs, two more reclosing operations will be performed. If these fail, the leakage current branch will be locked. If reclosing is successful again, the lighting branch will be locked and will not attempt reclosing again when a third leakage current outage occurs.

[0028] The current reclosing status information refers to the information recorded by the lighting system regarding the lighting branch that has been reclosed before the current time.

[0029] If the current reclosing status information does not meet the set reclosing standard information, a reclosing operation can be performed, and the RTU can be remotely controlled to reclose the leakage current branch, while the manual local operation of the RTU control function is disabled; if the conditions are met, the leakage current branch is marked as locked.

[0030] Reference Figure 2 Furthermore, the steps prior to determining whether there is a leakage current exceeding a set threshold and whether the duration of the leakage is greater than a duration threshold include S210-S230: S210, determine whether the leakage current function of each lighting branch is enabled; S220, if so, continue to determine whether the lighting branch to be tested is on, and whether the duration of the on-time exceeds the delay judgment time; S230, if yes, then execute S120.

[0031] Specifically, in the RTU's storage module, a corresponding leakage current function status flag is set for each lighting branch. This flag can be represented by binary 0 and 1, where 0 represents leakage current function off and 1 represents leakage current function on.

[0032] Before polling to collect leakage current, the RTU first reads the flag data corresponding to each lighting branch. For example, the RTU can access the address storing the flags and obtain the corresponding values ​​through internal register addressing.

[0033] The current in the lighting branch is detected by a current sensor. When current is detected and the current value exceeds a certain threshold (determined based on the power and characteristics of the lighting fixture), the lighting branch is determined to be in an "on" state. An internal timer is set up. When the lighting branch is detected to be on, the timer starts counting. During the counting process, the RTU continuously compares the current on-time with a delay judgment period. If the on-time exceeds the delay judgment period, the subsequent judgment conditions are met; otherwise, the process continues to wait. The delay judgment period is configurable but not less than 1 minute; the default setting is 5 minutes.

[0034] Reference Figure 3 The steps following marking the leakage current branch as locked include S310-S350: S310 generates and sends a maintenance work order; S320, determine whether maintenance has been completed before the next lighting cycle; S330, if so, perform a manual light-on test on the maintenance branch; S340, if not, issues a maintenance notice and receives an RTU disable command; After maintenance is completed, the S350 receives the RTU activation command and performs a manual light-on test on the maintenance branch.

[0035] Specifically, maintenance personnel have a dedicated maintenance progress reporting function on their mobile terminals. Upon arriving at the site to begin maintenance, personnel click "Start Maintenance" on their mobile terminals; upon completion, they click "Maintenance Complete" and upload the results. The RTU system determines whether maintenance is complete before the next lighting cycle based on the time settings and feedback from the maintenance personnel. If maintenance is complete, the personnel manually turn on the lights to observe if they illuminate normally. If so, the manual light-on test is passed; otherwise, the relevant information is recorded and the fault is re-investigated. If maintenance is not complete, a maintenance notice is published through the city lighting management department's official website, social media platforms, and nearby electronic displays. The notice includes information such as the location of the lighting branch under maintenance, the estimated maintenance time, and the potential impact on surrounding lighting. The lighting system receives an RTU disable command for that branch, stopping the RTU from collecting leakage current and transmitting data, preventing RTU malfunctions or data interference from affecting the maintenance work.

[0036] Reference Figure 4 The steps for generating and sending a maintenance work order include S410-S440: S410, generate fault signature code; S420 generates a maintenance work order based on the fault characteristic code; S430, obtain the suitability of maintenance personnel in the maintenance personnel database and their distance from the maintenance branch; S440 sends a maintenance work order to the mobile terminal of the maintenance personnel with the highest compatibility and the shortest distance.

[0037] Specifically, the RTU automatically generates a four-dimensional fault signature code: [Interlocked Line ID]_[Peak Leakage Current]_[Temperature Rise Rate]_[Pole ID]. Then, based on the peak leakage current and temperature rise rate, the work order level is determined. Work order levels are divided into three levels: Level 1 High-Risk Work Order, Level 2 Emergency Work Order, and Level 3 Regular Work Order. An example is shown below: For example, if the peak leakage current is greater than 3A and the temperature rise rate is greater than 8 degrees Celsius / min, the work order is classified as a Level 1 high-risk work order, requiring a response within 2 hours; if the peak leakage current is less than 3A but greater than 2A and the temperature rise rate is greater than 6 degrees Celsius / min, the work order is classified as a Level 2 emergency work order, requiring a response within 4 hours; otherwise, the work order is classified as a Level 3 regular work order, requiring a response within 24 hours.

[0038] A pre-created maintenance work order template includes common fields such as work order level, fault description, maintenance requirements, estimated maintenance time, and response time. Based on the generated fault signature code, detailed fault information is retrieved from the RTU's database, such as the specific lighting branch location and pole ID. This information, along with the fault signature code itself, is then populated into the corresponding fields of the work order template. After completing the information population, a complete maintenance work order is generated.

[0039] Reference Figure 5 The steps for obtaining the suitability of maintenance personnel in the maintenance personnel database and their distance to the maintenance branch include S510-S570: S510: Based on the maintenance work order, conduct a preliminary screening of maintenance personnel; S520, obtain the skill scores of the selected maintenance personnel; S530, obtain the personnel location of the selected maintenance personnel and the maintenance location of the maintenance branch; S540 calculates the path distance based on personnel location and maintenance location; S550, calculates distance weights based on path distance; S560, obtain the load factor of the selected maintenance personnel; S570 calculates the suitability of selected maintenance personnel based on skill score, distance weight, and load coefficient.

[0040] Specifically, maintenance personnel can be initially screened based on the type of fault, selecting those skilled in handling that type of fault. Then, the skill score of the selected maintenance personnel is calculated, where the skill score = The path distance can be obtained using the A* search algorithm, and then the distance weight is calculated as 1 / (path distance + 0.1). The load factor is 1 - (current work orders / maximum capacity). Adaptability. .

[0041] After maintenance is completed, the lighting system will issue a lockout command to clear the leakage circuit. The lighting circuit that failed maintenance will remain locked out and will not be turned on during the next lighting cycle.

[0042] Reference Figure 6The threshold value for leakage current for each lighting branch can be dynamically adjusted, and the adjustment steps include S610-S660: S610, acquires ambient temperature and humidity data of the lighting branch circuit; S620, obtain the geographical feature base value based on the geographical features of the lighting branch; S630, obtain the actual length of the lighting branch line; S640, obtains line length gain based on actual length; S650, obtain the percentage of LED lights in the lighting branch; S660 calculates the set threshold corresponding to the lighting branch based on environmental temperature and humidity data, geographical feature base values, line length gain, the proportion of LED lamps, and safety boundary constraints.

[0043] Specifically, temperature and humidity sensors, such as the common DHT11 or SHT20 sensors, can be installed near the lighting branches. These sensors can measure the ambient temperature and humidity in real time. A geographic feature database is pre-built, recording the base values ​​corresponding to different geographic features (such as mountainous areas, plains, and coastal areas). The geographic location information of the lighting branches can be obtained by querying map data (such as Google Maps API, Baidu Maps API, etc.) or using the Global Positioning System (GPS). Then, based on the geographic location information, the geographic feature category to which it belongs is determined, and the corresponding geographic feature base value is retrieved from the geographic feature database.

[0044] By consulting the design drawings of the lighting system, the length of each lighting branch is usually marked. Alternatively, professional line measurement tools, such as cable length testers, can be used to calculate the line length by sending a specific electrical signal to the line and calculating the signal's propagation time and speed. A pre-constructed table mapping line length to gain is created, which can be fitted using extensive experimental data. After obtaining the actual length of the lighting branch, the corresponding line length gain is found using the table. For example, when the line length is 0-50 meters, the gain is 1.0; when the line length is 51-100 meters, the gain is 1.1, and so on.

[0045] Input the ambient temperature and humidity data into the constructed temperature and humidity coupling term to obtain the temperature and humidity coupling value; temperature and humidity coupling value = , The temperature decay coefficient is This is the reference value for the leakage current threshold, where T is the actual temperature. As the reference temperature, Here, H represents the humidity sensitivity coefficient, and H is the actual humidity. The reference humidity is used.

[0046] The geographic feature base value and line length gain are input into the constructed geographic electrical compensation term to obtain the geographic electrical compensation value; Geographic electrical compensation value = As the base value of geographical features, 0.02 indicates a high-risk area, 0.1 indicates a public place, and 1.0 indicates a regular branch road. L is the length of the route. The reference length is .

[0047] Input the proportion of LED lights into the constructed load characteristic item to obtain the load characteristic value; Load characteristic value = , For LED harmonic weighting, This represents the percentage of LED lighting fixtures.

[0048] Safety boundary constraints: , This is the inherent leakage current of the circuit, obtained through self-testing.

[0049] The threshold is set as follows: temperature and humidity coupling term x geographic electrical compensation term x load characteristic term x safety boundary constraint.

[0050] Based on the above method embodiments, the second embodiment of this application discloses a remote monitoring system for urban lighting leakage current based on an RTU. The urban lighting leakage current remote monitoring method system of this application embodiment can implement any of the above-described RTU-based urban lighting leakage current remote monitoring methods, and the specific working process of each module in the urban lighting leakage current remote monitoring system can be referred to the corresponding process in the above method embodiments.

[0051] For ease of understanding, an example is as follows: A remote monitoring system for leakage current in urban lighting based on an RTU, comprising an RTU, wherein the RTU includes: The data acquisition module is used to poll and collect the leakage current of each lighting branch according to a set period. The judgment module is used to determine whether there is a leakage current exceeding a set threshold and whether the duration of leakage is greater than the duration threshold. The control processing module is used to mark the corresponding lighting branch as a leakage branch and disconnect the power to the leakage branch. The information reading module is used to read the reclosing information of the leakage current branch. The reclosing information includes the current reclosing status information and the set reclosing standard information. The judgment module is also used to determine whether the current reclosing status information meets the set reclosing standard information; the control processing module is used to perform the reclosing operation when the judgment module determines that it is not, and to mark the leakage branch as locked when the judgment module determines that it is.

[0052] A third embodiment of this application provides an electronic device. As one implementation of this electronic device, the device may include: a memory and a processor; wherein... The memory is used to store the RTU-based remote monitoring program for urban lighting leakage current. The processor is used to execute the program stored in the memory to implement the steps of the above-described RTU-based remote monitoring method for urban lighting leakage current.

[0053] The memory can communicate with the processor via a communication bus, which can be an address bus, a data bus, a control bus, etc.

[0054] Additionally, the memory may include random access memory (RAM) or non-volatile memory (NVM), such as at least one disk storage device.

[0055] Furthermore, the processor can be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it can also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.

[0056] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Any feature disclosed in this specification (including the abstract and drawings) may be replaced by other equivalent or similar features unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is only one example of a series of equivalent or similar features.

Claims

1. A remote monitoring method for leakage current in urban lighting based on RTU, characterized in that, With RTU as the execution entity, including: The leakage current of each lighting branch is collected in a polling cycle according to the set period. Determine whether there is a leakage current exceeding a set threshold, and whether the duration of the leakage is greater than the duration threshold. If so, mark the corresponding lighting branch as a leakage branch and disconnect the power to the leakage branch; Read the reclosing information of the leakage current branch, the reclosing information including the current reclosing status information and the set reclosing standard information; Determine whether the current reclosing status information meets the set reclosing standard information; If so, then perform a reclosing operation; If not, mark the leakage branch as locked.

2. The method for remote monitoring of urban lighting leakage current based on RTU according to claim 1, characterized in that, The steps prior to determining whether there is a leakage current exceeding a set threshold and whether the duration of the leakage current is greater than a duration threshold include: Determine whether the leakage protection function is enabled for each lighting branch; If so, continue to determine whether the lighting branch to be tested is on, and whether the duration of the on-time exceeds the delay judgment time; If so, then determine whether there is a leakage current exceeding the set threshold, and whether the duration of the leakage is greater than the duration threshold.

3. The method for remote monitoring of urban lighting leakage current based on RTU according to claim 1, characterized in that, The step following marking the leakage current branch as locked also includes: Generate and send maintenance work orders; Determine whether the maintenance has been completed before the next lighting cycle; If so, perform a manual light-on test on the maintenance branch; If not, issue a maintenance notice and receive an RTU disable command; After maintenance is completed, receive the RTU activation command and perform a manual light-on test on the maintenance branch.

4. The method for remote monitoring of urban lighting leakage current based on RTU according to claim 4, characterized in that, The steps for generating and sending maintenance work orders include: Generate fault signature codes; Based on the fault signature code, a maintenance work order is generated; Obtain the suitability of maintenance personnel in the maintenance personnel database and their distance from the maintenance branch; Send maintenance work orders to the mobile terminal of the maintenance personnel with the highest compatibility and the shortest distance.

5. The method for remote monitoring of urban lighting leakage current based on RTU according to claim 4, characterized in that, The steps of obtaining the suitability of maintenance personnel in the maintenance personnel database and their distance from the maintenance branch include: Based on the aforementioned maintenance work order, maintenance personnel are initially screened. Obtain the skill scores of the selected maintenance personnel; Obtain the location of the selected maintenance personnel and the maintenance location of the maintenance branch; Calculate the path distance based on the personnel location and the maintenance location; Calculate the distance weight based on the path distance; Obtain the load factor of the selected maintenance personnel; The suitability of the selected maintenance personnel is calculated based on the skill score, the distance weight, and the load coefficient.

6. The method for remote monitoring of urban lighting leakage current based on RTU according to claim 1, characterized in that, The RTU-based remote monitoring method for urban lighting leakage current also includes: Obtain ambient temperature and humidity data for the lighting branch circuits; Based on the geographical features of the lighting branch, obtain the geographical feature base value; Obtain the actual length of the lighting branch line; Based on the actual length, obtain the line length gain; Obtain the percentage of LED lights in the lighting branch circuit; Based on the environmental temperature and humidity data, the geographical feature baseline value, the line length gain, the proportion of LED lights, and combined with safety boundary constraints, the set threshold corresponding to the lighting branch is calculated.

7. A remote monitoring method for urban lighting leakage current based on RTU according to claim 6, characterized in that, The step of calculating the set threshold corresponding to the lighting branch based on the environmental temperature and humidity data, the geographical feature base value, the line length gain, the proportion of LED lamps, and in conjunction with safety boundary constraints includes: The ambient temperature and humidity data are input into the constructed temperature and humidity coupling term to obtain the temperature and humidity coupling value; The geographic feature base value and the line length gain are input into the constructed geographic electrical compensation item to obtain the geographic electrical compensation value; The proportion of the LED lights is input into the constructed load characteristic item to obtain the load characteristic value; Based on the temperature and humidity coupling value, the geographical electrical compensation value, the load characteristic value, and the safety boundary constraints, the set threshold corresponding to the lighting branch is calculated.

8. A remote monitoring system for leakage current in urban lighting based on an RTU, characterized in that, The method for remote monitoring of urban lighting leakage current based on an RTU as described in any one of claims 1-7 includes an RTU, wherein the RTU comprises: The data acquisition module is used to poll and collect the leakage current of each lighting branch according to a set period. The judgment module is used to determine whether there is a leakage current exceeding a set threshold and whether the duration of leakage is greater than the duration threshold. The control processing module is used to mark the corresponding lighting branch as a leakage branch and disconnect the power to the leakage branch. The information reading module is used to read the reclosing information of the leakage current branch, the reclosing information including the current reclosing status information and the set reclosing standard information; The judgment module is also used to determine whether the current reclosing status information meets the set reclosing standard information; the control processing module is used to perform a reclosing operation when the judgment module determines that it is yes, and to mark the leakage branch as locked when the judgment module determines that it is no.

9. An electronic device, characterized in that, include: The memory stores an RTU-based remote monitoring program for urban lighting leakage current. A processor is configured to execute a program stored in the memory to implement the steps of the RTU-based remote monitoring method for urban lighting leakage current as described in any one of claims 1-7.

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