CN117955218B - MPPT-based solar street lamp control system - Google Patents
MPPT-based solar street lamp control system Download PDFInfo
- Publication number
- CN117955218B CN117955218B CN202410358629.7A CN202410358629A CN117955218B CN 117955218 B CN117955218 B CN 117955218B CN 202410358629 A CN202410358629 A CN 202410358629A CN 117955218 B CN117955218 B CN 117955218B
- Authority
- CN
- China
- Prior art keywords
- battery
- street lamp
- energy storage
- electric quantity
- control unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000005286 illumination Methods 0.000 claims abstract description 13
- 238000004146 energy storage Methods 0.000 claims description 99
- 238000001514 detection method Methods 0.000 claims description 28
- 238000012544 monitoring process Methods 0.000 claims description 14
- 238000007599 discharging Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 8
- 230000000087 stabilizing effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910021419 crystalline silicon Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
- H02J7/0048—Detection of remaining charge capacity or state of charge [SOC]
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/66—Regulating electric power
- G05F1/67—Regulating electric power to the maximum power available from a generator, e.g. from solar cell
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
- H02J7/005—Detection of state of health [SOH]
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electromagnetism (AREA)
- Sustainable Energy (AREA)
- Sustainable Development (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Medical Informatics (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention relates to the field of solar street lamps, which is used for solving the problem that the control and management effects on street lamps are insufficient due to the lack of discharge and illumination management on street lamps in a solar street lamp control system, in particular to an MPPT-based solar street lamp control system; according to the invention, the charge coverage rate of the battery is collected, the charge and discharge conditions of the battery can be quantitatively analyzed, the illumination condition of the position of the solar street lamp is conveniently known, the operation of the solar street lamp is controlled, the street lamp is classified according to the electric quantity state of the solar street lamp by counting the electric quantity state of the solar street lamp, the corresponding independent control is carried out according to different classifications of the solar street lamp, the use effect of the street lamp in different environments is improved, the battery state of the solar street lamp is analyzed, the prediction of the service life of the battery in the solar street lamp is realized, and the maintenance preparation of the battery in the street lamp is conveniently carried out by a manager in advance.
Description
Technical Field
The invention relates to the field of solar street lamps, in particular to a solar street lamp control system based on MPPT.
Background
The solar street lamp is powered by a crystalline silicon solar battery, a maintenance-free valve-controlled sealed storage battery is used for storing electric energy, an ultra-bright LED lamp is used as a light source and is controlled by an intelligent charge-discharge controller, the solar street lamp is used for replacing a street lamp for traditional public power illumination, the output power of a photovoltaic cell is related to the working voltage, only when the solar street lamp works under the most suitable voltage, the output power of the photovoltaic cell has a unique maximum value, the MPPT controller is a full-called maximum power point tracking solar controller, and the maximum power point tracking system is an electric system which can enable a photovoltaic panel to output more electric energy by adjusting the working state of an electric module and can effectively store direct current emitted by the solar panel in the storage battery;
At present, the solar street lamp control system in the prior art still has the defect that most of the existing solar street lamp control systems control the charging behavior of solar energy, and the existing solar street lamp control systems lack an effective control system for the lighting control and the discharging control of the street lamp, so that the solar street lamp is difficult to effectively control and manage when the external illumination environment is poor;
the application provides a solution to the technical problem.
Disclosure of Invention
According to the invention, the charge coverage rate of the battery is collected, the charge and discharge conditions of the battery can be quantitatively analyzed, the illumination condition of the position of the solar street lamp is conveniently known, the operation of the solar street lamp is controlled, the street lamp is classified according to the electric quantity state of the solar street lamp, the corresponding independent control is carried out according to the different classifications of the solar street lamp, the using effect of the street lamp in different environments is improved, the battery state of the solar street lamp is analyzed, the prediction of the service life of the battery in the solar is realized, the maintenance preparation of the battery in the street lamp is facilitated for a manager in advance, the problem that the control effect of the street lamp is insufficient due to the lack of discharge and illumination management of the street lamp by a solar street lamp control system is solved, and the solar street lamp control system based on MPPT is provided.
The aim of the invention can be achieved by the following technical scheme:
The solar street lamp control system based on MPPT comprises a solar monitoring unit, a charging control unit, a central control unit, a battery capacity control unit and a battery detection unit, wherein the solar monitoring unit is used for monitoring a photovoltaic solar panel, acquiring output voltage with highest output power, recording the output voltage as optimal voltage, and sending the optimal voltage to the charging control unit;
After the optimal voltage is obtained by the charging control unit, stabilizing the output voltage of the photovoltaic solar panel at the optimal voltage, and charging the energy storage battery of the solar street lamp, wherein the charging control unit collects the charging coverage rate of the battery and sends the charging coverage rate to the central control unit;
The battery capacity control unit can acquire the residual electric quantity of an energy storage battery in the solar street lamp, analyze the residual electric quantity, classify the solar street lamp according to an analysis result, and divide the solar street lamp into an insufficient energy storage street lamp and an insufficient energy storage street lamp, and the battery capacity control unit sends the sufficient energy storage street lamp and the insufficient energy storage street lamp to the central control unit;
the battery detection unit can detect the residual life and the maximum capacity of the energy storage battery and send the detection results of the battery life and the maximum capacity to the central control unit;
After the central control unit obtains the street lamp with sufficient energy storage and the street lamp with insufficient energy storage, the central control unit performs regional analysis according to the position arrangement of the street lamp with insufficient energy storage and the street lamp with sufficient energy storage, controls the street lamp illumination strategy according to the analysis result, and the central control unit obtains the maximum capacity of the battery and the street lamp with sufficient energy storage for analysis, and performs secondary judgment of the electric energy reserve quantity of the street lamp with sufficient energy storage.
As a preferred embodiment of the present invention, when the solar monitoring unit monitors the photovoltaic solar panel, the output power of the photovoltaic solar panel is calculated by a perturbation method, and the specific method of the perturbation method is as follows:
The disturbance resistor R and the MOSFET are connected in series, and the average current through the resistor is changed by changing the duty cycle of the MOSFET under the condition that the output voltage is substantially stable, thereby generating a disturbance of the current. Meanwhile, the output current and voltage of the photovoltaic cell are changed along with the change, the disturbance direction of the next period is determined by measuring the change of the output power and voltage of the photovoltaic cell before and after disturbance, when the disturbance direction is correct, the output power of the solar energy light energy panel is increased, the next period continues to be disturbed in the same direction, otherwise, the next period is disturbed in the opposite direction, and thus, the disturbance and observation are repeatedly carried out to ensure that the output of the solar energy light energy panel reaches the maximum power point;
the solar monitoring unit records the voltage reaching the maximum power point as the optimal voltage.
As a preferred embodiment of the present invention, the charging control unit records the time when the energy storage battery is in a charged state as a charging duration a, records the time when the energy storage battery is in a discharged state as a discharging duration B, and records the time when the energy storage battery is in an uncharged and uncharged state as a rest duration C;
The charge control unit generates the charge coverage rate X by formula analysis, Wherein abc is a preset weight coefficient, the value range of a is 1-1.2, the value of b is 0.9-1.1, and the value range of c is 0.7-0.94.
As a preferred embodiment of the present invention, the battery capacity control unit obtains the charging coverage rate X through the charging control unit, and obtains the remaining power in the energy storage battery at the same time, the battery capacity control unit compares the remaining power in the energy storage battery with a safe power threshold, if the remaining power is smaller than the safe power threshold, classifies the solar street lamp as an insufficient energy storage street lamp, and if the remaining power is greater than or equal to the safe power threshold, classifies the solar street lamp as an adequate energy storage street lamp;
the step of obtaining the safe electric quantity threshold value by the battery capacity is as follows:
step one: the battery capacity control unit acquires a preset initial safe electric quantity threshold D0;
step two: the battery capacity control unit obtains a safe electric quantity threshold value D through calculation of a formula, Wherein q is a preset weight coefficient, and the value range of q is 1-1.3.
As a preferred embodiment of the present invention, the battery detecting unit accumulates the usage time and the charge-discharge coefficient of the battery, and the battery detecting unit obtains the remaining life of the battery from the difference between the preset life of the battery and the battery consumption time by taking the product of the battery usage time and the charge-discharge coefficient as the battery consumption time;
The step of obtaining the charge and discharge coefficient by the battery detection unit is as follows:
S1: the battery detection unit acquires the current electric quantity of the battery when each charging starts and records the difference value of the electric quantity of the battery at two times as a charging quantity when each charging ends;
S2: the battery detection unit acquires the current electric quantity of the battery when each discharge starts, acquires the current electric quantity of the battery when each discharge ends, and records the difference value of the electric quantity of the battery and the battery as the discharge quantity;
S3: the battery detection unit records the charge amount as K and the discharge amount as F, the battery detection unit obtains the charge and discharge coefficient F of the battery through formula analysis, Wherein Z is the designed maximum capacity of the battery, and S is the preset maximum charging times of the battery.
As a preferred embodiment of the present invention, after the central control unit obtains the street lamp with insufficient energy storage, judging the adjacent street lamp state of the street lamp with insufficient energy storage, if the adjacent position of the street lamp with insufficient energy storage is a street lamp with sufficient energy storage, adopting the street lamp with sufficient energy storage to perform illumination, and performing closing control on the street lamp with insufficient energy storage;
if the adjacent position of the street lamp with insufficient energy storage is the street lamp with insufficient energy storage, adopting alternate lighting control to the two adjacent groups of street lamps with insufficient energy storage, wherein the alternate lighting control means that one group of street lamps is closed after the lighting set time, the other group of street lamps is replaced for lighting, and the street lamps are closed again after the lighting set time, and the cycle control is performed.
As a preferred embodiment of the present invention, after the central control unit obtains the sufficient energy storage street lamp, the central control unit calculates the ratio of the maximum capacity of the battery of the sufficient energy storage street lamp to the preset initial maximum capacity to obtain a check coefficient, the check coefficient=maximum safe capacity/initial maximum capacity, and the central control unit obtains the checked check electric quantity by using the check coefficient of the remaining electric quantity of the sufficient energy storage street lamp, compares the check electric quantity with a safe electric quantity threshold, if the check electric quantity is greater than or equal to the safe electric quantity threshold, does not react, and if the check electric quantity is less than the safe electric quantity threshold, modifies the sufficient energy storage street lamp into the insufficient energy storage street lamp.
Compared with the prior art, the invention has the beneficial effects that:
According to the invention, when the solar street lamp is controlled, the maximum output power of the photovoltaic solar panel is obtained through controlling the output voltage of the photovoltaic solar panel so as to improve the charging efficiency, and meanwhile, the charging coverage rate of the battery is collected so as to quantitatively analyze the charging and discharging conditions of the battery, thereby being convenient for knowing the illumination condition of the position of the solar street lamp and controlling the operation of the solar street lamp.
According to the invention, the electric quantity states of the solar street lamps are counted, and the street lamps are classified according to the electric quantity states of the solar street lamps, so that corresponding independent control is carried out according to different classifications of the solar street lamps, and the use effect of the street lamps in different environments is improved.
According to the invention, the battery state of the solar street lamp is analyzed, so that the prediction of the service life of the battery in the solar street lamp is realized, management staff can conveniently maintain and prepare the battery in the street lamp in advance, and meanwhile, the classification condition of the solar street lamp is secondarily checked according to the battery state of the solar street lamp, so that the classification accuracy of the solar street lamp is improved.
Drawings
The present invention is further described below with reference to the accompanying drawings for the convenience of understanding by those skilled in the art.
FIG. 1 is a system block diagram of the present invention;
fig. 2 is a flow chart of the system of the present invention.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Examples
Referring to fig. 1-2, the MPPT-based solar street lamp control system includes a solar monitoring unit, a charging control unit, a central control unit, a battery capacity control unit and a battery detection unit, wherein the solar monitoring unit is used for monitoring a photovoltaic solar panel, calculating the output power of the photovoltaic solar panel by a disturbance method, and the specific method of the disturbance method is as follows:
The disturbance resistor R and the MOSFET are connected in series, and the average current through the resistor is changed by changing the duty cycle of the MOSFET under the condition that the output voltage is substantially stable, thereby generating a disturbance of the current. Meanwhile, the output current and voltage of the photovoltaic cell are changed along with the change, the disturbance direction of the next period is determined by measuring the change of the output power and voltage of the photovoltaic cell before and after disturbance, when the disturbance direction is correct, the output power of the solar energy light energy panel is increased, the next period continues to be disturbed in the same direction, otherwise, the next period is disturbed in the opposite direction, and thus, the disturbance and observation are repeatedly carried out to ensure that the output of the solar energy light energy panel reaches the maximum power point;
after the output voltage with the highest output power is obtained, the solar monitoring unit records the voltage reaching the maximum power point as the optimal voltage and sends the optimal voltage to the charging control unit.
Examples
Referring to fig. 1-2, after the charging control unit obtains the optimal voltage, the output voltage of the photovoltaic solar panel is stabilized at the optimal voltage, and the energy storage battery of the solar street lamp is charged, the charging control unit collects the charging coverage rate of the battery, the charging control unit records the time when the energy storage battery is in a charging state, as a charging duration a, records the time when the energy storage battery is in a discharging state, as a discharging duration B, records the time when the energy storage battery is in an uncharged and uncharged state, as a rest duration C, the charging control unit generates the charging coverage rate X through formula analysis, and sends the charging coverage rate to the central control unit,Wherein abc is a preset weight coefficient, the value range of a is 1-1.2, the value of b is 0.9-1.1, and the value range of c is 0.7-0.94.
The battery capacity control unit obtains the charging coverage rate X through the charging control unit, meanwhile, the battery capacity control unit can obtain the residual capacity of an energy storage battery in the solar street lamp, the residual capacity is analyzed, the residual capacity in the energy storage battery is compared with a safe electric quantity threshold value, if the residual capacity is smaller than the safe electric quantity threshold value, the solar street lamp is classified as an insufficient energy storage street lamp, if the residual capacity is larger than or equal to the safe electric quantity threshold value, the solar street lamp is classified as an insufficient energy storage street lamp, the solar street lamp is divided into an insufficient energy storage street lamp and an sufficient energy storage street lamp, and the battery capacity control unit sends the sufficient energy storage street lamp and the insufficient energy storage street lamp to the central control unit to obtain the safe electric quantity threshold value as follows:
step one: the battery capacity control unit acquires a preset initial safe electric quantity threshold D0;
step two: the battery capacity control unit obtains a safe electric quantity threshold value D through calculation of a formula, Wherein q is a preset weight coefficient, and the value range of q is 1-1.3;
The battery detection unit can detect the residual life and the maximum capacity of the energy storage battery, and sends detection results of the battery life and the maximum capacity to the central control unit, the battery detection unit accumulates the service time and the charging and discharging coefficient of the battery, the battery detection unit obtains the residual life of the battery through the product of the service time of the battery and the charging and discharging coefficient as battery consumption time and the difference value of the preset life of the battery and the battery consumption time, predicts the service life of the battery in the solar street lamp, and is convenient for management personnel to maintain and prepare the battery in the street lamp in advance;
The step of the battery detection unit obtaining the charge and discharge coefficient is as follows:
S1: the battery detection unit acquires the current electric quantity of the battery when each charging is started, and records the difference value of the electric quantity of the battery and the battery as a charging quantity when each charging is ended;
S2: the battery detection unit acquires the current electric quantity of the battery when each discharge starts, acquires the current electric quantity of the battery when each discharge ends, and records the difference value of the electric quantity of the battery twice as the discharge quantity;
s3: the battery detection unit records the charge amount as K, the discharge amount as F, the battery detection unit obtains the charge and discharge coefficient F of the battery through formula analysis, Wherein Z is the designed maximum capacity of the battery, and S is the preset maximum charging times of the battery;
After the central control unit acquires the street lamp with sufficient energy storage and the street lamp with insufficient energy storage, the central control unit performs regional analysis according to the position arrangement of the street lamp with insufficient energy storage and the street lamp with sufficient energy storage, and controls the street lamp illumination strategy according to the analysis result, wherein the specific control scheme is as follows: judging the adjacent street lamp states of the street lamps with insufficient energy storage, if the adjacent positions of the street lamps with insufficient energy storage are the street lamps with sufficient energy storage, adopting the street lamps with sufficient energy storage to illuminate, and closing the street lamps with insufficient energy storage;
If the adjacent positions of the street lamps with insufficient energy storage are the street lamps with insufficient energy storage, adopting alternate lighting control to the two adjacent groups of street lamps with insufficient energy storage, wherein the alternate lighting control means that one group of street lamps is closed after lighting setting time, the other group of street lamps is replaced for lighting, and the other group of street lamps is closed again after the lighting setting time, and the two groups of street lamps are circularly controlled, so that the two groups of street lamps are alternately used to improve lighting guarantee under the condition of insufficient battery power;
The central control unit obtains the maximum capacity of the battery and the sufficient energy storage street lamp for analysis, secondary judgment of the electric energy reserve quantity is made for the sufficient energy storage street lamp, the central control unit obtains the sufficient energy storage street lamp, the maximum capacity of the battery and the preset initial maximum capacity of the sufficient energy storage street lamp are subjected to proportion calculation, the check coefficient=the maximum safe capacity/the initial maximum capacity, the central control unit compares the check coefficient with the safe electric quantity threshold value after the check coefficient obtains the check electric quantity after the check electric quantity is checked, if the check electric quantity is larger than or equal to the safe electric quantity threshold value, no reaction is made, if the check electric quantity is smaller than the safe electric quantity threshold value, the sufficient energy storage street lamp is modified into the insufficient energy storage street lamp, the accuracy of classification of the street lamp is guaranteed, meanwhile, secondary check is conducted on the classification condition of the solar street lamp according to the battery state of the solar street lamp, and the classification accuracy of the solar street lamp is improved.
According to the invention, when the solar street lamp is controlled, the maximum output power of the photovoltaic solar panel is obtained through controlling the output voltage of the photovoltaic solar panel so as to improve the charging efficiency, and meanwhile, the charging coverage rate of the battery is collected so as to quantitatively analyze the charging and discharging conditions of the battery, thereby being convenient for knowing the illumination condition of the position of the solar street lamp and controlling the operation of the solar street lamp.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (3)
1. The solar street lamp control system based on MPPT is characterized by comprising a solar monitoring unit, a charging control unit, a central control unit, a battery capacity control unit and a battery detection unit, wherein the solar monitoring unit is used for monitoring a photovoltaic solar panel, acquiring output voltage with highest output power, recording the output voltage as optimal voltage, and sending the optimal voltage to the charging control unit;
After the optimal voltage is obtained by the charging control unit, stabilizing the output voltage of the photovoltaic solar panel at the optimal voltage, and charging the energy storage battery of the solar street lamp, wherein the charging control unit collects the charging coverage rate of the battery and sends the charging coverage rate to the central control unit;
The battery capacity control unit can acquire the residual electric quantity of an energy storage battery in the solar street lamp, analyze the residual electric quantity, classify the solar street lamp according to an analysis result, and divide the solar street lamp into an insufficient energy storage street lamp and an insufficient energy storage street lamp, and the battery capacity control unit sends the sufficient energy storage street lamp and the insufficient energy storage street lamp to the central control unit;
the battery detection unit can detect the residual life and the maximum capacity of the energy storage battery and send the detection results of the battery life and the maximum capacity to the central control unit;
After the central control unit acquires the street lamps with sufficient energy storage and the street lamps with insufficient energy storage, carrying out regional analysis according to the position arrangement of the street lamps with insufficient energy storage and the street lamps with sufficient energy storage, controlling the street lamp illumination strategy according to the analysis result, acquiring the maximum capacity of a battery and the street lamps with sufficient energy storage by the central control unit, analyzing, and carrying out secondary judgment on the electric energy reserve quantity of the street lamps with sufficient energy storage;
The charging control unit records the time of the energy storage battery in a charging state as a charging duration A, records the time of the energy storage battery in a discharging state as a discharging duration B, and records the time of the energy storage battery in an uncharged state and an uncharged state as a rest duration C;
The charge control unit generates the charge coverage rate X by formula analysis, Wherein abc is a preset weight coefficient, the value range of a is 1-1.2, the value of b is 0.9-1.1, and the value range of c is 0.7-0.94;
The battery capacity control unit acquires a charging coverage rate X through the charging control unit, acquires the residual electric quantity in the energy storage battery at the same time, compares the residual electric quantity in the energy storage battery with a safe electric quantity threshold value, classifies the solar street lamp as an insufficient energy storage street lamp if the residual electric quantity is smaller than the safe electric quantity threshold value, and classifies the solar street lamp as an sufficient energy storage street lamp if the residual electric quantity is larger than or equal to the safe electric quantity threshold value;
the step of obtaining the safe electric quantity threshold value by the battery capacity is as follows:
step one: the battery capacity control unit acquires a preset initial safe electric quantity threshold D0;
step two: the battery capacity control unit obtains a safe electric quantity threshold value D through calculation of a formula, Wherein q is a preset weight coefficient, and the value range of q is 1-1.3;
The battery detection unit accumulates the service time and the charge-discharge coefficient of the battery, and the battery detection unit obtains the residual service life of the battery through the difference value between the preset service life of the battery and the battery consumption time by taking the product of the service time of the battery and the charge-discharge coefficient as the battery consumption time;
The step of obtaining the charge and discharge coefficient by the battery detection unit is as follows:
S1: the battery detection unit acquires the current electric quantity of the battery when each charging starts and records the difference value of the electric quantity of the battery at two times as a charging quantity when each charging ends;
S2: the battery detection unit acquires the current electric quantity of the battery when each discharge starts, acquires the current electric quantity of the battery when each discharge ends, and records the difference value of the electric quantity of the battery and the battery as the discharge quantity;
S3: the battery detection unit records the charge amount as K and the discharge amount as F, the battery detection unit obtains the charge and discharge coefficient F of the battery through formula analysis, Wherein Z is the designed maximum capacity of the battery, and S is the preset maximum charging times of the battery;
After the central control unit obtains the sufficient energy storage street lamp, the central control unit carries out proportion calculation on the maximum capacity of the battery and the preset initial maximum capacity of the sufficient energy storage street lamp to obtain a check coefficient, the check coefficient=the maximum safe capacity/the initial maximum capacity, the central control unit obtains the checked check electric quantity of the remaining electric quantity of the sufficient energy storage street lamp, compares the check electric quantity with a safe electric quantity threshold value, does not react if the check electric quantity is larger than or equal to the safe electric quantity threshold value, and modifies the sufficient energy storage street lamp into the insufficient energy storage street lamp if the check electric quantity is smaller than the safe electric quantity threshold value.
2. The MPPT-based solar street lamp control system of claim 1, wherein the solar monitoring unit calculates the output power of the photovoltaic solar panel by a perturbation method, the perturbation method specifically comprises:
the disturbance resistor R and the MOSFET are connected in series, under the condition that the output voltage is basically stable, the average current passing through the resistor is changed by changing the duty ratio of the MOSFET, the disturbance of the current is generated, meanwhile, the output current voltage of the photovoltaic cell is changed along with the change of the output power and the voltage of the photovoltaic cell before and after the disturbance, the disturbance direction of the next period is determined, when the disturbance direction is correct, the output power of the solar energy light energy plate is increased, the next period continues to be disturbed in the same direction, otherwise, the disturbance is carried out in the opposite direction, and the disturbance and the observation are repeatedly carried out to ensure that the output of the solar energy light energy plate reaches the maximum power point;
the solar monitoring unit records the voltage reaching the maximum power point as the optimal voltage.
3. The MPPT-based solar street lamp control system of claim 1, wherein after the central control unit obtains the street lamp with insufficient energy storage, the central control unit judges the adjacent street lamp state of the street lamp with insufficient energy storage, if the adjacent position of the street lamp with insufficient energy storage is a street lamp with sufficient energy storage, the street lamp with sufficient energy storage is used for illumination, and the street lamp with insufficient energy storage is closed;
if the adjacent position of the street lamp with insufficient energy storage is the street lamp with insufficient energy storage, adopting alternate lighting control to the two adjacent groups of street lamps with insufficient energy storage, wherein the alternate lighting control means that one group of street lamps is closed after the lighting set time, the other group of street lamps is replaced for lighting, and the street lamps are closed again after the lighting set time, and the cycle control is performed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410358629.7A CN117955218B (en) | 2024-03-27 | 2024-03-27 | MPPT-based solar street lamp control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410358629.7A CN117955218B (en) | 2024-03-27 | 2024-03-27 | MPPT-based solar street lamp control system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117955218A CN117955218A (en) | 2024-04-30 |
| CN117955218B true CN117955218B (en) | 2024-06-04 |
Family
ID=90796529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410358629.7A Active CN117955218B (en) | 2024-03-27 | 2024-03-27 | MPPT-based solar street lamp control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117955218B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118232483A (en) * | 2024-05-22 | 2024-06-21 | 深圳市诚信诺科技有限公司 | MPPT-based outdoor lamp control method, MPPT-based outdoor lamp control device, MPPT-based outdoor lamp control equipment, storage medium and product |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108448574A (en) * | 2018-03-23 | 2018-08-24 | 河海大学 | A kind of capacity configuration optimizing method that wind power plant is generated electricity by way of merging two or more grid systems with photovoltaic DC field |
| CN114435172A (en) * | 2022-03-01 | 2022-05-06 | 深圳市中鑫新能源科技有限公司 | Automatically-managed intelligent charging pile and intelligent charging method for new energy automobile |
| CN115856655A (en) * | 2022-11-18 | 2023-03-28 | 北京停碳科技有限公司 | New energy automobile battery real-time state evaluation method, storage medium and electronic equipment |
| JP2023059108A (en) * | 2021-10-14 | 2023-04-26 | 河村電器産業株式会社 | vehicle charging system |
-
2024
- 2024-03-27 CN CN202410358629.7A patent/CN117955218B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108448574A (en) * | 2018-03-23 | 2018-08-24 | 河海大学 | A kind of capacity configuration optimizing method that wind power plant is generated electricity by way of merging two or more grid systems with photovoltaic DC field |
| JP2023059108A (en) * | 2021-10-14 | 2023-04-26 | 河村電器産業株式会社 | vehicle charging system |
| CN114435172A (en) * | 2022-03-01 | 2022-05-06 | 深圳市中鑫新能源科技有限公司 | Automatically-managed intelligent charging pile and intelligent charging method for new energy automobile |
| CN115856655A (en) * | 2022-11-18 | 2023-03-28 | 北京停碳科技有限公司 | New energy automobile battery real-time state evaluation method, storage medium and electronic equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117955218A (en) | 2024-04-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN117955218B (en) | MPPT-based solar street lamp control system | |
| CN108599212B (en) | Energy storage system | |
| CN108683203B (en) | Energy storage system | |
| CN109066749B (en) | Energy management system applied to photovoltaic energy storage system | |
| CN102508169A (en) | Device and method for obtaining battery capacity | |
| KR101925773B1 (en) | System for monitoring battery state and method for detecting deterioration position of the same | |
| CN204062817U (en) | A kind of vcehicular tunnel photovoltaic intelligent illuminator | |
| CN116111951B (en) | Data monitoring system based on photovoltaic power generation | |
| CN104198942A (en) | Online judging system for invalidation of valve regulated lead acid storage battery | |
| JP2013160582A (en) | Battery pack system and management method of battery pack system | |
| CN107276148A (en) | High-efficient management and control system of electric automobile battery charge-discharge | |
| CN114258178B (en) | Intelligent illumination remote on-line monitoring, regulating and controlling management system for solar street lamp | |
| CN117674228A (en) | Net-structured energy storage system | |
| CN207705885U (en) | A kind of photovoltaic charged and automatic lighting system based on STM32 | |
| CN114069776A (en) | Solar charging control device, system and control method | |
| CN116826813B (en) | Energy storage management system of photovoltaic energy storage unit | |
| CN109116255A (en) | A kind of accumulator charging and discharging state judgment method based on voltage | |
| CN102905425A (en) | Intelligent controllable solar semiconductor lighting controller and method thereof | |
| CN116404677B (en) | Management system of electric power energy storage system | |
| KR102347319B1 (en) | A Battery Unit Device Using Reused Battery and Independent Solar Street Light System Having the Same | |
| EP2837258B1 (en) | Battery monitoring in emergency lighting systems | |
| CN116454934B (en) | Energy storage EMS cloud platform based on multiple devices | |
| CN203537013U (en) | Solar controller capable of prolonging running working days in rainy weather | |
| CN114358334A (en) | Big data-based energy management platform and operation method thereof | |
| CN111295001A (en) | High-frequency discharge system for solar outdoor street lamp |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |