Method and device for calculating lighting rate of street lamp

Abstract

The application discloses a kind of street lamp lighting rate calculation method and device, through the real-time electric parameter data of acquisition circuit and single lamp, the lighting of offline street lamp is considered comprehensively considering line loss in circuit, external load and, ensure that the calculation result of lighting rate is more accurate.Meanwhile, even if part of single lamp controller is offline, still can be deduced the lighting state of offline street lamp by power calculation, avoid the calculation of lighting rate due to equipment failure or communication interruption and influence.Further, by real-time acquisition and analysis electric parameter data, can dynamically adjust and update reference value, promptly reflect the change of line or equipment, guarantee the stable operation of street lamp control system.Therefore, based on accurate lighting power calculation, can effectively detect abnormal power consumption and adjust in time, improve the energy utilization efficiency of street lamp control system, reduce unnecessary power waste.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of urban lighting street lamp management, and more particularly, to a street lamp lighting rate calculation method and device. BACKGROUND

[0002] With the development of cities, street lamps play a vital role in urban lighting. Therefore, accurately calculating the lighting rate of street lamps is of great significance to ensure the quality of urban lighting, energy management and maintenance work.

[0003] Traditional urban street lamp management mainly relies on manual inspection or citizen hotline feedback problems, and at the same time, the lighting rate is manually counted by statistical sampling method. This method is not only inefficient but also cannot find faults in time. With the development of intelligent technology, more and more cities have begun to use intelligent street lamp control systems. By installing single lamp controller devices on street lamps, street lamp lighting state data can be collected and reported to the server-side intelligent street lamp control system, so as to calculate the lighting rate and realize remote monitoring and management of street lamps.

[0004] However, in actual application, due to the reasons such as the lack of payment of the SIM card of part of the single lamp controller, poor signal, communication failure or equipment failure, the single lamp controller cannot be online, which leads to the fact that the street lamp control system cannot obtain the lighting state of the street lamp, thereby affecting the statistical calculation of the lighting rate and affecting the statistics and maintenance work of the urban lighting street lamp. SUMMARY

[0005] Therefore, the present application provides a street lamp lighting rate calculation method and device, which aims to accurately determine the street lamp lighting rate and avoid the influence of equipment failure or communication interruption on the lighting rate calculation.

[0006] To achieve the above purpose, the present application adopts the following technical solutions:

[0007] The present application provides a street lamp lighting rate calculation method, which comprises:

[0008] The line loss reference value of the street lamp, the external load active power of the loop where the street lamp is located, and the online lighting real-time power are obtained by the electric parameter acquisition device, and the loop real-time active power of the loop where the street lamp is located is obtained by the line control device;

[0009] The total lighting active power is calculated according to the loop real-time active power and the line loss reference value and the external load active power, including the following method:

[0010] M = A - B - C;

[0011] Wherein, M is total light active power, A is loop real-time active power, B is line loss reference value, C is external load active power;

[0012] According to the total light active power and online light real-time power, the offline light real-time power is calculated, including calculating according to the following method;

[0013] H=M-D;

[0014] Wherein, H is offline light real-time power; M is total light active power; D is online light real-time power;

[0015] The sum of each offline single light active power reference value is obtained to obtain the reference value sum;

[0016] According to the reference value sum and the loop offline street light quantity, the loop offline single light active power average value is calculated, including calculating according to the following method;

[0017]

[0018] Wherein, The loop offline single light active power average value is I; N1 is the loop offline street light quantity;

[0019] According to the offline light real-time power and the loop offline single light active power average value, the offline light quantity is calculated, including calculating according to the following method:

[0020]

[0021] Wherein, N2 is the offline light quantity; H is the offline light real-time power; The loop offline single light active power average value is I;

[0022] According to the online light quantity and the offline light quantity, the actual light quantity is calculated, including calculating according to the following method:

[0023] N3=N4+N2;

[0024] Wherein, N3 is the actual light quantity; N4 is the online light quantity; N2 is the offline light quantity;

[0025] According to the actual light quantity and the preset should light street light quantity, the light rate of street light is calculated, including calculating according to the following method:

[0026]

[0027] Wherein, R is the light rate of street light; N3 is the actual light quantity; N5 is the preset should light street light quantity.

[0028] Optionally, the external load active power is the sum of the active powers of the external loads of the street lamps.

[0029] Optionally, the line loss reference value is calculated according to the loop active power at the last time, the single lamp active power at the last time, and the external load active power at the last time, and comprises calculation according to the following method:

[0030] B = A1 - E - C1;

[0031] Wherein, B is the line loss reference value; A1 is the loop active power at the last time; E is the single lamp active power at the last time; C1 is the external load active power at the last time.

[0032] In a second aspect, the present application provides a street lamp lighting rate calculation device, comprising: a processor and a memory, the memory is used for storing computer program code, the computer program code comprises computer instructions, when the processor executes the computer instructions, the computer program code is applied to the street lamp lighting rate calculation device to execute the street lamp lighting rate calculation method of the first aspect and any possible implementation manner thereof.

[0033] The street lamp lighting rate calculation device provided by the present application can ensure that the calculation result of the lighting rate is more accurate by collecting real-time electrical parameter data of the loop and the single lamp, comprehensively considering the line loss in the loop, the external load, and the lighting condition of the offline street lamp. At the same time, even if part of the controller is offline, the lighting state of the offline street lamp can still be derived through power calculation, avoiding the influence of the calculation of the lighting rate due to equipment failure or communication interruption. Further, by collecting and analyzing the electrical parameter data in real time, the reference value can be dynamically adjusted and updated, timely reflecting the changes of the line or equipment, and ensuring the stable operation of the street lamp control system.

[0034] Compared with the prior art, the street lamp lighting rate calculation method provided by the present application at least achieves the following beneficial effects: by collecting real-time electrical parameter data of the loop and the single lamp, comprehensively considering the line loss in the loop, the external load, and the lighting condition of the offline street lamp, the calculation result of the lighting rate is more accurate. At the same time, even if part of the single lamp controller is offline, the lighting state of the offline street lamp can still be derived through power calculation, avoiding the influence of the calculation of the lighting rate due to equipment failure or communication interruption. Further, by collecting and analyzing the electrical parameter data in real time, the reference value can be dynamically adjusted and updated, timely reflecting the changes of the line or equipment, and ensuring the stable operation of the street lamp control system. Therefore, based on the accurate lighting power calculation, abnormal power consumption can be effectively detected and timely adjusted, the energy utilization efficiency of the street lamp control system is improved, and unnecessary power waste is reduced.

[0035] Of course, implementing any product of the present application does not necessarily need to achieve all the above technical effects at the same time.

[0036] Other features of the present application, and its particular advantages, will become apparent to those skilled in the art from the following detailed description, together with the drawings in which: BRIEF DESCRIPTION OF DRAWINGS

[0037] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the application and, together with the description, serve to explain the principles of the application.

[0038] Figure 1 is a flowchart of a street lamp lighting rate calculation method provided by an embodiment of the application;

[0039] Figure 2 is a component diagram of a street lamp lighting rate calculation device provided by an embodiment of the application. DETAILED DESCRIPTION

[0040] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangements, numerical expressions, and values of components and steps set forth in these embodiments are not limiting to the scope of the present application unless otherwise specifically stated.

[0041] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way limiting to the scope of the application or its applications or uses.

[0042] Techniques, methods, and apparatus known to those of ordinary skill in the relevant art can not be discussed in detail herein, but should be considered as part of the specification, where appropriate.

[0043] In all of the examples shown and discussed herein, any specific values should be interpreted as merely illustrative and not as a limitation. Thus, other examples of exemplary embodiments can have different values.

[0044] It should be noted that like references and characters herein relate to like items throughout the drawings, and once an item is defined in one drawing, it need not be discussed further in subsequent drawings.

[0045] Embodiment 1

[0046] Referring to Figure 1 , Figure 1 is a flowchart of a street lamp lighting rate calculation method provided by an embodiment of the application. The street lamp lighting rate calculation method includes the following steps.

[0047] In step S11, the line loss reference value of the street lamp, the external load active power of the loop in which the street lamp is located, and the online lighting real-time power are obtained by the electrical parameter acquisition device, and the loop real-time active power of the loop in which the street lamp is located is obtained by the line control device.

[0048] It should be noted that the line loss reference value is a reference data for evaluating the power loss in the line. After all the street lamps in the loop are normally lit and work stably for a period of time, the electrical parameters of the loop can be recorded by the electrical parameter acquisition device, such as the total active power, the single lamp active power and the external load active power, to calculate the loss power of the line, i.e. the line loss reference value. The line loss reference value is a static value, which is used to represent the line loss under ideal conditions.

[0049] It should be understood that there can be other external devices (such as advertising board lighting, signal lights, etc.) sharing power resources with street lamps in the loop, so these devices can be referred to as external loads, and the active power of the external load is the external load active power.

[0050] The external load active power can be measured by a specially installed electrical metering device or an electrical parameter acquisition device. These devices can collect the voltage, current and active power of the external load in real time and upload the data to the street lamp control system. The external load active power is used to exclude the power consumption of the non-street lamp part from the total power of the loop, to ensure that the calculation of the lighting rate only involves the power of the actual street lamps.

[0051] The street lamp control system is an automated system for managing and controlling street lamps, including a controller to obtain the status of the street lamps in real time and control or manage the street lamps according to actual needs.

[0052] It should be noted that the online lighting real-time power refers to the sum of the active power of all the street lamps normally connected to the street lamp control system (online) at the current time. These data are collected in real time by the single lamp controller or the electrical parameter acquisition device and reported to the intelligent street lamp control system.

[0053] Further, the loop real-time active power refers to the active power of the entire loop at the current time, including the power of the street lamps, the external load and the line loss. This data is collected by the line control device of the loop and uploaded to the intelligent street lamp control system as the input of the total power, for calculating the actual lighting power in the loop.

[0054] The above embodiments can realize comprehensive consideration of the street lamps, the external load and the line loss factor, accurate calculation of the lighting rate of the loop, and help to timely discover abnormal conditions and optimize the energy consumption management of the street lamps.

[0055] In step S12, the total lighting active power is calculated according to the loop real-time active power and the line loss reference value and the external load active power, including the calculation according to the following method:

[0056] M = A - B - C;

[0057] Wherein, M is total bright lamp active power, A is loop real-time active power, B is line loss reference value, and C is external load active power.

[0058] It should be noted that the total bright lamp active power is used to represent the total active power of all bright lamps in the current loop, that is, the total power provided by the loop for the street lamp at a certain moment (after removing the line loss and external load power). The total bright lamp active power reflects the power consumption of the actual bright lamp in the loop under normal power supply conditions, which is used for the calculation of the bright lamp rate and system fault diagnosis.

[0059] The loop real-time active power is the total active power of the current loop collected by the line control device (such as a centralized controller). The loop real-time active power represents the overall power consumption of the loop at a certain moment, including the power of the street lamp, the power of the external load, and the power loss in the line.

[0060] For example, the loop real-time active power is obtained in real time by the line control device, that is, the power consumption of the entire loop, which includes the sum of the power of the street lamp, the external load, and the line loss. Further, the loop real-time active power is subtracted by the line loss reference value to remove the energy loss generated in the line transmission process. In addition, since the external load (such as other electrical equipment) in the loop also consumes power, that is, the external load active power does not belong to the street lamp control system. Therefore, this part of the power is subtracted from the total power, and the remaining power is the total power consumption of all bright lamps in the loop, that is, the total bright lamp active power.

[0061] The above embodiments can accurately evaluate the actual bright lamp situation of the loop, remove irrelevant power consumption factors, and avoid power errors caused by line loss or external load. It provides a reliable data basis for further calculating the bright lamp rate, analyzing the operation of the street lamp, and monitoring the fault of the street lamp control system.

[0062] In step S13, the offline bright lamp real-time power is calculated according to the total bright lamp active power and the online bright lamp real-time power, including calculating according to the following method;

[0063] H = M - D;

[0064] Wherein, H is the offline bright lamp real-time power; M is the total bright lamp active power; and D is the online bright lamp real-time power.

[0065] It should be noted that the offline bright lamp real-time power is the total active power of all offline but still bright lamps in the current loop. Since the controller of some street lamps may be offline due to communication failure or other problems, but these street lamps are still bright, it is necessary to calculate the power of these street lamps.

[0066] The online lighting real-time power is the total power of the current online and lighting street lamps, that is, the real-time power consumption that can be directly obtained through the controller of each online street lamp.

[0067] For example, since the controller of the offline street lamp does not report the power data in real time, its power consumption cannot be directly obtained. However, by knowing the difference between the total lighting power (including the power of all street lamps) and the power of the online street lamps, the total power of the offline lighting street lamps, that is, the offline lighting real-time power, can be obtained.

[0068] The above embodiment solves the problem that the power consumption data of the offline street lamp controller cannot be obtained in the intelligent street lamp control system. By subtracting the power of the online lighting street lamp, the total power of the offline lighting street lamp can be indirectly obtained, thereby ensuring that the lighting situation of the overall street lamp can be grasped even if part of the equipment is offline, and the management and maintenance of the street lamp control system are not affected by incomplete information.

[0069] In step S14, the offline single lamp active power reference value of each offline single lamp is summed to obtain a reference value sum.

[0070] It should be noted that the offline single lamp active power reference value is used to represent the active power reference value of each street lamp when it is normally working and stably lighting. These offline single lamp active power reference values are usually re-collected and stored when the system is initially run or when the state of the street lamp is updated (such as replacing the lamp or adjusting the circuit). The offline single lamp active power reference value can be used to represent the standard power consumption of each street lamp without external abnormal interference.

[0071] The reference value sum is used to represent the reference value sum of all offline lighting street lamps, which is obtained by summing the active power reference value of each offline street lamp. The reference value sum is an important reference for calculating the offline street lamp real-time power. Since the controller of the offline street lamp is in an offline state, its power data cannot be obtained in real time, and therefore the power consumption of the offline street lamp can be estimated based on the reference value sum.

[0072] The above embodiment can obtain the expected value of the power consumption of all offline lighting street lamps in the loop by summing the offline single lamp active power reference value, that is, the reference value sum, which provides basic data for subsequent offline lighting power calculation and monitoring, and ensures that the working state of these street lamps can be roughly grasped even if the equipment is offline, thereby ensuring the normal operation of the street lamp control system.

[0073] In step S15, the offline single lamp active power average value of the loop is calculated based on the reference value sum and the number of offline street lamps in the loop, including being calculated according to the following method:

[0074]

[0075] wherein, is the average active power of the offline single lamp in the loop; I is the total sum of the reference values; and N1 is the number of the offline single lamps in the loop.

[0076] It should be noted that the number of the offline single lamps in the loop is the number of the single lamps in the offline state.

[0077] It should be understood that the average power consumption of each offline single lamp can be obtained by allocating the total reference power of the offline single lamps to each offline single lamp, i.e., the average active power of the offline single lamp in the loop.

[0078] The above embodiment can maintain the estimation of the overall energy consumption by calculating the average active power of the offline single lamp in the loop, and ensure that the working state of the lamp can be known in the offline state.

[0079] In step S16, the number of the offline lamps is calculated according to the offline lamp real-time power and the average active power of the offline single lamp in the loop, including being calculated according to the following method:

[0080]

[0081] wherein N2 is the number of the offline lamps; H is the offline lamp real-time power; and I is the average active power of the offline single lamp in the loop. is the average active power of the offline single lamp in the loop.

[0082] It should be noted that the number of the offline lamps refers to the number of the lamps in the current loop which are in the offline state but still light up. Since the controllers of these lamps are offline, their states cannot be monitored in real time, and thus the number of the offline lamps can be obtained by dividing the offline lamp real-time power by the average active power of the offline single lamp in the loop.

[0083] The above embodiment can grasp the number of the lamps in the loop which are offline but still light up, thereby ensuring the accurate statistics of the overall lighting rate.

[0084] In step S17, the actual number of the lamps is calculated according to the number of the online lamps and the number of the offline lamps, including being calculated according to the following method:

[0085] N3=N4+N2;

[0086] wherein N3 is the actual number of the lamps; N4 is the number of the online lamps; and N2 is the number of the offline lamps.

[0087] It should be noted that the actual number of the lamps represents the number of the lamps in the current loop which are actually lighted up, including all the online and offline lamps which are still lighted up.

[0088] The number of the online lamps represents the number of the lamps in the current loop which are online and light up.

[0089] Through the above formula, the number of all lighted street lamps in the loop can be obtained, whether online or offline, which provides a basis for calculating the overall street light lighting rate.

[0090] In step S18, the lighting rate of the street lamp is calculated according to the actual number of lighted lamps and the preset number of lamps that should be lighted, including calculation according to the following method:

[0091]

[0092] Wherein, R is the lighting rate of the street lamp; N3 is the actual number of lighted lamps; N5 is the preset number of lamps that should be lighted.

[0093] It should be noted that the lighting rate of the street lamp refers to the proportion of the actual number of lighted lamps to the number of lamps that should be lighted, which is used to measure the working efficiency and operation of the current street lamp control system.

[0094] The preset number of lamps that should be lighted is the number of lamps that should be lighted according to the pre-setting, indicating the number of lamps that are expected to be lighted under normal conditions.

[0095] The lighting rate of the street lamp can be calculated through the above formula, which reflects the actual operation of the street lamp control system.

[0096] The method for calculating the lighting rate of the street lamp provided by the application at least achieves the following beneficial effects: by collecting real-time electrical parameter data of the loop and the single lamp, comprehensively considering the line loss, external load and lighting condition of the offline street lamp in the loop, the calculation result of the lighting rate is more accurate. At the same time, even if part of the controller is offline, the lighting state of the offline street lamp can still be derived through power calculation, avoiding the influence of device failure or communication interruption on the calculation of the lighting rate. Further, by collecting and analyzing the electrical parameter data in real time, the reference value can be dynamically adjusted and updated, reflecting the changes of the line or device in time, and ensuring the stable operation of the street lamp control system. Therefore, based on the accurate lighting power calculation, abnormal power consumption can be effectively detected and adjusted in time, the energy utilization efficiency of the street lamp control system is improved, and unnecessary power waste is reduced.

[0097] Optionally, the active power of the external load is the sum of the active power of the external load of the street lamp.

[0098] It should be understood that in the street lamp control system, in addition to the power consumption of the street lamp itself, external devices (for example, advertising lighting devices, electrical devices of public facilities, etc., which share the same power supply or line with the street lamp.) also consume electrical energy. Therefore, by adding the active power of all these external devices, the total active power of the external load can be obtained.

[0099] The external load active power is calculated, which helps to more accurately calculate the total power consumption of the street lamp control system, and avoids misjudgment caused by only taking the street lamp as a reference and ignoring other devices.

[0100] Optionally, the line loss reference value is calculated according to the loop active power at the previous moment, the single lamp active power at the previous moment, and the external load active power at the previous moment, and includes calculation according to the following method:

[0101] B = A1 - E - C1;

[0102] Wherein, B is the line loss reference value; A1 is the loop active power at the previous moment; E is the single lamp active power at the previous moment; C1 is the external load active power at the previous moment.

[0103] It should be noted that the line loss reference value refers to a reference value of line loss, which is usually used to evaluate the power loss on the line and help to judge the overall efficiency; the loop active power at the previous moment is used to represent the active power of the entire loop at a previous time point; the single lamp active power at the previous moment represents the active power of each street lamp at a previous time point, reflecting the actual power consumption of each street lamp at that time; the external load active power at the previous moment represents the sum of the active power of the external load (such as billboards or other devices) connected to the street lamp control system at the previous time point.

[0104] Through the above formula, the power loss on the line at the previous moment can be obtained, which is used as the line loss reference value for power analysis and optimization of the street lamp control in the next step.

[0105] Embodiment 2

[0106] Figure 2 A composition schematic diagram of a street lamp lighting rate calculation device provided by the embodiment of the application is shown in FIG. 1. Figure 2 As shown in the figure, the street lamp lighting rate calculation device can include at least one processor 11, a memory 12, a communication interface 13, and a communication bus 14.

[0107] The processor 11 is the control center of the street lamp lighting rate calculation device, which can be a CPU, a micro processing unit, or one or more integrated circuits for controlling the execution of the program of the embodiment of the application.

[0108] As an embodiment, the processor 11 can include one or more CPUs, such as the CPU0 and CPU1 shown in FIG. 1. Figure 2 As an embodiment, the street lamp lighting rate calculation device can include multiple processors, such as the CPU0 and CPU1 shown in FIG. 1. Figure 2The processors 11 and 15 shown in FIG. 1 can each be a single-core processor (Single-CPU) or a multi-core processor (Multi-CPU).

[0109] The memory 12 can be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM) or other type of dynamic storage device that can store information and instructions, an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disk storage, a magnetic disk storage or other magnetic storage devices, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited thereto. The memory 12 can exist independently, and is connected to the processor 11 through the communication bus 14. The memory 12 can also be integrated with the processor 11.

[0110] In a specific implementation, the memory 12 is configured to store data and software programs for implementing the present application. The processor 11 can perform various functions of the street light lighting rate calculation device by running or executing the software programs stored in the memory 12 and calling the data stored in the memory 12.

[0111] The communication interface 13 is configured to communicate with other devices or communication networks, such as a radio access network (RAN), a wireless local area network (WLAN), etc., using any transceiver-like mechanism. The communication interface 13 can include a receiving unit to implement a receiving function and a sending unit to implement a sending function.

[0112] The communication bus 14 can include a path for transmitting information between the above-mentioned components.

[0113] It should be noted that, Figure 2 The structure shown in FIG. 1 does not constitute a limitation on the street light lighting rate calculation device, except Figure 2 The street light lighting rate calculation device can include more or fewer components than those shown in FIG. 1, or combine some components, or different component arrangements.

[0114] Of course, the light lamp lighting rate calculation device provided by the embodiment of the present application includes but is not limited to the above-mentioned modules.

[0115] The light lamp lighting rate calculation device provided by the present application aims to automatically generate priority information of data indexes and improve the generation efficiency and flexibility of the priority information.

[0116] Although some specific embodiments of the present application have been described in detail by examples, those skilled in the art should understand that the above examples are only for illustration, not for limiting the scope of the present application. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. A method for calculating the lighting rate of street lamps, characterized in that: The method comprises: Obtain the line loss baseline value of the street lamp, the active power of the external load of the circuit where the street lamp is located, and the real-time power of the online lighting through the electrical parameter acquisition device, and obtain the real-time active power of the circuit where the street lamp is located through the line control device; The total lighting active power is calculated according to the real-time active power of the loop, the line loss reference value, and the active power of the external load, including calculation according to the following method: M=ABC; Wherein, M is the total active power of the lights, A is the real-time active power of the loop, B is the line loss reference value, and C is the active power of the external load; The offline lighting real-time power is calculated according to the total lighting active power and the online lighting real-time power, including calculation according to the following method; H = MD; Wherein, H is the offline lighting real-time power; M is the total lighting active power; D is the online lighting real-time power; Add up the active power reference values ​​of each offline single lamp to obtain the total reference value; The average active power of each lamp in the loop is calculated based on the sum of the reference values ​​and the number of lamps in the loop that are offline, including calculation according to the following method; in, is the average active power of the single lamp in the offline loop; I is the sum of the reference values; N1 is the number of offline lamps in the loop; The number of offline lights is calculated based on the offline lights real-time power and the average active power of the offline single lights in the loop, including the following method: Wherein, N2 is the number of offline lights; H is the real-time power of the offline lights; is the average active power of a single offline lamp in the loop; The actual number of lights on is calculated based on the number of lights on online and the number of lights off offline, including calculation based on the following methods: N3=N4+N2; Among them, N3 is the actual number of lights on; N4 is the number of lights on online; N2 is the number of lights on offline; The lighting rate of the street lamp is calculated based on the actual number of lights on and the preset number of street lamps that should be on, including calculation according to the following method: Among them, R is the lighting rate of the street lamp; N3 is the actual number of lights on; and N5 is the preset number of street lamps to be on.

2. The method according to claim 1, characterized in that The active power of the external load is the sum of the active powers of the external loads of the street lamp.

3. The method according to claim 1, characterized in that The line loss reference value is calculated based on the loop active power at the previous moment, the single lamp active power at the previous moment, and the external load active power at the previous moment, including calculation according to the following method: B=A1-E-C1; Among them, B is the line loss reference value; A1 is the loop active power at the previous moment; E is the single lamp active power at the previous moment; C1 is the external load active power at the previous moment.

4. A device for calculating the lighting rate of street lamps, characterized in that: include: A processor and a memory, wherein the memory is used to store computer program code, the computer program code includes computer instructions, and when the processor executes the computer instructions, the calculation device applied to the street lamp lighting rate executes the calculation method of the street lamp lighting rate as described in any one of claims 1 to 3.

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