Power supply charging method of power system automation device

Abstract

The invention relates to the technical field of equipment power supply, and particularly discloses a power supply charging method for an automatic device of a power system, which realizes intelligent adjustment of a distributed energy-saving charging control process of different charging stages of a battery. The method specifically comprises the following steps: step 1, receiving a charging connection signal by the automatic device; 2, the automatic device collects the actual charging power of the multiple power supply devices in real time according to the charging control strategy, calculates and determines the charging real-time total power of the automatic device and judges whether the charging real-time total power is larger than a preset threshold value or not, if yes, the maximum power is adjusted, and the next step is executed; if not, continuing to obtain the sum of the actual charging power of all the power supply equipment in real time; 3, receiving a detection result of the charging safety state of the automatic device in real time, and determining a target control signal according to the adaptive model after the detection result is determined; and step 4, selecting to connect or disconnect the automation device and the power supply according to the target control signal.

Description

Technical Field

[0001] The present invention relates to the technical field of device power supply, and particularly to a power charging method for an automatic device in a power system. Background Art

[0002] The field of power system automation includes automatic detection, regulation and control of the production process, automatic safety protection of systems and components, automatic transmission of network information, automatic scheduling of system production, and automatic economic management of enterprises, etc. The main goal of power system automation is to ensure the power quality (frequency and voltage) of the power supply, thereby ensuring the safe and reliable operation of the system, and improving economic efficiency and management efficiency.

[0003] In the process of the rapid development of intelligent control technology, through various control strategies, such as genetic algorithms, ant colony algorithms, and deep learning, etc., combined with mathematical models, the design process of a charging method for intelligent distributed power sources is realized.

[0004] In the existing process of realizing safe power charging through an automatic device, although the charging current can be optimized and adjusted to a certain extent according to the battery charge state, the change of the charging current caused by the change of the charging voltage during different charging periods affects the stability of the chemical substances inside the battery during charging, and it is difficult to make real-time predictions and timely adjustments; therefore, it is difficult to optimize charging according to different charging stages of the battery and realize the distributed energy-saving charging control process. Summary of the Invention

[0005] The purpose of the present invention is to provide a power charging method for an automatic device in a power system, and solve the following technical problems: How to realize the distributed energy-saving charging control process of intelligent adjustment of different charging stages of the battery.

[0006] The purpose of the present invention can be achieved by the following technical solutions: A power charging method for an automatic device in a power system, the method includes: Step 1, the automatic device receives a charging connection signal; Step 2, the automatic device collects the actual charging power of multiple power supply devices in real time according to a charging control strategy, calculates and determines the real-time total charging power of the automatic device, and judges whether the real-time total charging power is greater than a preset threshold: If so, adjust the maximum power and enter the next step; If not, continue to obtain the sum of the actual charging powers of all power supply devices in real time; Step 3, receive the detection result of the charging safety state of the automatic device in real time, and determine the target control signal according to an adaptive model after determining the detection result; Step 4: Select to connect or disconnect the connection between the automation device and the power supply according to the target control signal.

[0007] Preferably, the specific method for the step three to receive the detection result of the charging safety state of the automation device in real time includes: Obtain the real-time charging risk value through the formula ; ; where is the total number of charging devices, and ∈ ; is the start time of charging detection, is the end time of charging detection; and is the charging detection time interval; is the adjustment function; is the th real-time electrical performance parameter of the charging of the th power supply device; Obtain the real-time electrical performance parameter of charging through the formula ; where is the maximum power within the charging control interval of the th power supply device; is the average power within the charging control interval of the th power supply device; is the average current within the charging control interval of the th power supply device; is the average voltage within the charging control interval of the th power supply device; is the average power change reference value of the th power supply device within the sampling interval, and ≠0. ≠0.

[0008] Preferably, compare and analyze the real-time charging risk value with the preset charging risk value threshold interval : If ≤ , it is determined that the current charging state of the automation device is normal; If < ≤ , it is determined that there is a charging safety risk for the current automation device, and the charging control strategy is updated and optimized; If > , it is determined that there is a charging safety problem with the current automation device, and a maintenance signal is generated.

[0009] Preferably, the method for determining the target control signal is as follows: Obtain the control signal value through the formula ; where ; , , are the proportional coefficient, integral coefficient, and differential coefficient in the proportional-integral-derivative controller in sequence; is the real-time deviation signal amount, and reflects the difference between the actual system and the ideal reference model; Compare the control signal value with the preset control signal value threshold : If < , it is determined that the current state has not reached the ideal control state; If ≥ , it is determined that the current state has reached the ideal control state, and the current control signal value is used as the parameter information of the target control signal, and the target control signal is generated.

[0010] Preferably, the specific process of step four for selecting to connect or disconnect the connection between the automation device and the power supply according to the target control signal is as follows: If ≥ , then let , , ; Substitute into the formula : ; where is the control signal value after control adjustment; is the number of control adjustments, and ∈ ; is the initial proportional coefficient; is the initial integral coefficient; is the initial differential coefficient; is the proportional coefficient correction value; is the integral coefficient correction value; is the differential coefficient correction value; , , are the proportional coefficient correction value, integral coefficient correction value, and differential coefficient correction value for the th adjustment, the th adjustment, and the th adjustment in sequence; is the judgment function: When > If so, then judge the current ; is the warning value; When ≤ If so, then judge the current ; When ≤ If so, then continue to connect the automation device to the power supply; When > If so, then disconnect the automation device from the power supply.

[0011] Preferably, the charging control strategy includes: S1. Set different charging stages: S11. Constant current charging stage: When the battery is connected to the charging controller, detect the battery terminal voltage. If the variation range of the battery terminal voltage belongs to the first-stage voltage threshold interval, then charge with the first constant current; when the battery terminal voltage exceeds the maximum value of the first-stage voltage threshold interval, enter the constant current pulse charging stage; S12. Constant current pulse charging stage: Charge with the second constant current for the first preset number of minutes, then stop charging for the second preset number of minutes, and repeat this process. When the battery terminal voltage exceeds the second-stage voltage, switch to the constant voltage charging stage; S13. Constant voltage charging stage: When charging with the second-stage voltage; as the battery terminal voltage increases, the charging current will gradually decrease; detect the charging current. When the battery terminal voltage is greater than the second-stage voltage and the charging current gradually decreases to the first preset current, enter the floating charge charging stage; otherwise, continue to charge at a constant voltage with the second-stage voltage; S14. Floating charge charging stage: When the battery terminal is nearly fully charged, perform floating charge charging with the third-stage voltage; when the charging current is less than the second preset current, stop charging.

[0012] Preferably, the charging control strategy further includes: S2. Collect the real-time charging power according to the battery terminal charging voltage value and current value obtained in different charging stages, and set the charging fuzzy PID control algorithm; S3. Based on the adjustment amount output by the charging fuzzy PID control algorithm Construct a charging model and optimize the charging control strategy.

[0013] Preferably, the specific method for adjusting the maximum power in step two is: Determine the working state of the power supply device and judge whether the power supply device is in a low power or idle state: If so, then preferentially adjust the charging power of the power supply device in the low load or idle state: If in a low-load state: according to the formula ; where is an adjustment coefficient determined according to the device state, and 0 < < 1; is the current power of the th power supply device, is the adjusted power of the th power supply device; If in an idle state: reduce its charging power to the minimum charging power maintenance value; Otherwise, adjust the charging mode of the automation device: Judge when the real-time total charging power is greater than the preset threshold , switch from the fast charging mode to the slow charging mode; Judge when the real-time total charging power is less than the preset threshold , switch from the slow charging mode to the fast charging mode.

[0014] Advantages of the present invention: (1) The present invention realizes the information confirmation of starting charging and receives the charging connection signal through the automation device, and realizes the connection of the charging power supply and the power supply device through the reception of the charging connection signal; according to the designed charging control strategy, the automation device collects the actual charging power of multiple power supply devices in real time, determines the real-time total charging power of the automation device, and judges whether the real-time total charging power is greater than the preset threshold; if it is judged to be greater than the preset threshold, the maximum power is adjusted; the optimization of the power operation efficiency is realized by adjusting the maximum power.

[0015] (2) By receiving the detection result of the charging safety state of the automation device in real time, after determining the detection result, the target control signal is determined according to the adaptive model; the flexible charging control adjustment process is realized through the detection of the charging safety state; the control state is judged according to the output of the target control signal, and the corresponding processing measures are analyzed and matched according to the control state, and the processing measures include selecting to connect or disconnect the connection between the automation device and the power supply; to realize the optimization of the charging control process.

[0016] Of course, it is not necessary for any product implementing the present invention to achieve all the above-described advantages simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention, and those of ordinary skill in the art can also obtain other drawings based on these drawings without creative efforts.

[0018] Figure 1 Schematic diagram of the power charging method steps of an automatic device for a power system according to the present invention. Specific implementation manner

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0020] Please refer to Figure 1 As shown, the present invention is a power charging method for an automatic device of a power system. The method includes: Step 1: The automatic device receives a charging connection signal; Step 2: The automatic device collects the actual charging power of multiple power supply devices in real time according to a charging control strategy, calculates and determines the total real-time charging power of the automatic device, and determines whether the total real-time charging power is greater than a preset threshold: If so, adjust the maximum power and proceed to the next step; If not, continue to obtain the sum of the actual charging powers of all power supply devices in real time; Step 3: Receive the detection result of the charging safety state of the automatic device in real time. After determining the detection result, determine the target control signal according to an adaptive model; Step 4: Select to connect or disconnect the connection between the automatic device and the power supply according to the target control signal.

[0021] In the prior art problems, the change of the charging voltage during different charging periods causes the change of the charging current, which affects the stability of the chemical substances inside the battery during charging, and it is difficult to perform real-time prediction and timely adjustment; therefore, it is difficult to optimize the charging according to different charging stages of the battery and realize the distributed energy-saving charging control process.

[0022] To solve the above technical problems, in the above technical solution, the intelligent charging design process of the automation device is realized by designing a power charging method. The specific steps are as follows: First, the automation device realizes the information confirmation of starting charging. The information confirmation is set to receive a charging connection signal, and the charging power supply and the power supply device are connected through the reception of the charging connection signal. Then, according to the designed charging control strategy, the automation device collects the actual charging power in real time. This actual power usually comes from the control signals of multiple power supply devices, and the real-time total charging power of the automation device is determined by calculation through a mathematical formula. The real-time total power is determined by statistical calculation based on the actual powers of multiple power supply devices, and corresponding processing is carried out by judging the size of the real-time total charging power, mainly by judging whether the real-time total charging power is greater than a preset threshold. If it is greater than the preset threshold, the maximum power is adjusted and the next step is entered; otherwise, the sum of the actual charging powers of all power supply devices is continuously obtained in real time, and the maximum power is adjusted to optimize the power operation efficiency. Next, by receiving the detection result of the charging safety state of the automation device in real time, after determining the detection result, the target control signal is determined according to the adaptive model; a flexible charging control adjustment process is realized through the detection of the charging safety state. Finally, the control state is judged according to the output of the target control signal, and corresponding processing measures are analyzed and matched according to the control state. The processing measures include selecting to connect or disconnect the connection between the automation device and the power supply; to realize the optimized charging control process. Among them, the adaptive model is based on constructing a model according to the PID controller during the generation of the target control signal, and is obtained by the adaptive adjustment of the model during the detection and charging safety adjustment process.

[0023] As an implementation manner of the present invention, the specific method for the third step to receive the detection result of the charging safety state of the automation device in real time includes: By the formula Calculate to obtain the real-time charging risk value ; Among them, Is the total number of charging devices, and ∈ ; Is the starting time of charging detection, Is the ending time of charging detection; and Is the charging detection time interval; Is the adjustment function; Is the th real-time electrical performance parameter of the charging of the power supply device; By the formula Calculate to obtain the real-time electrical performance parameter of charging ; Among them, Is the th charging control interval of the power supply device The maximum power; is the average power within the charging control interval of the th power supply device; is the average current within the charging control interval of the th power supply device; is the average voltage within the charging control interval of the th power supply device; is the average power change reference value of the th power supply device within the sampling interval, and ≠0.

[0024] In the above technical solution, the real-time charging risk value is calculated through the formula , and the charging safety state of the automation device is detected according to the real-time charging risk value, and the detection of multiple items such as output voltage, current accuracy, power factor, and leakage protection is completed; by accumulating the real-time electrical performance parameters of different charging devices change status, the accurate prediction of the charging risk of the device is realized.

[0025] The real-time electrical performance parameter is calculated through the formula , and the charging performance parameters are obtained by judging the charging control of the power value, current value, and voltage value in the charging control interval of the power supply device; among them, by taking the difference between the power peak value and the average value and taking the absolute value and the parameter value fluctuation state of the power according to the product of the current and the voltage are comprehensively analyzed to obtain the real-time electrical performance parameter ; furthermore, by adjusting and analyzing the state, the real-time charging risk value is accurately obtained.

[0026] Among them, the reference quantities involved above: the adjustment function is obtained by fitting according to the empirical test data, and the adjustment function is obtained by adaptively adjusting according to the periodic characteristics of the charging electrical performance parameters, which will not be elaborated here; , , , are all obtained by simulating and analyzing historical data, which will not be elaborated here.

[0027] As an implementation manner of the present invention, the real-time charging risk value is compared and analyzed with the preset charging risk value threshold interval : If ≤ , it is determined that the charging state of the current automation device is normal; If < ≤ , it is determined that there is a charging safety risk in the current automation device, and the charging control strategy is updated and optimized; If > , it is determined that there is a charging safety problem in the current automation device, and a maintenance signal is generated.

[0028] In the above technical solution, the threshold interval set historically is used as the basis for real-time charging risk value for comparison and analysis. It is judged that if is less than , it is determined that the charging of the current automation device is in a safe state and the charging state is normal; if < ≤ , it is determined that the charging of the current automation device is within the risk range, then there is a charging safety risk in the automation device; if > , it is determined that the current automation device exceeds the safe charging range, so it is judged that there is a charging safety problem, and a maintenance signal for the automation device is generated.

[0029] As an implementation manner of the present invention, the method for determining the target control signal is: The control signal value is calculated through the formula ; where , , are the proportional coefficient, integral coefficient, and differential coefficient in the proportional-integral-differential controller in sequence; is the real-time deviation signal quantity and reflects the difference between the actual system and the ideal reference model; The control signal value is compared with the preset control signal value threshold : If < , it is determined that the current does not reach the ideal control state; If ≥ , it is determined that the current reaches the ideal control state, then the current control signal value is used as the parameter information of the target control signal, and a target control signal is generated.

[0030] In the above technical solution, the method for determining the target control signal is to calculate the control signal value through the formula ; through the control signal value ; Implement the judgment of the control state and generate a target control signal according to the result of the ideal control state; construct a model based on the PID controller and comprehensively analyze the proportional coefficient, integral coefficient, and differential coefficient in the control algorithm for the real-time deviation signal volume; implement the accurate acquisition of the control signal value. and the integral coefficient , and the differential coefficient for comprehensive analysis of the real-time deviation signal volume; implement the accurate acquisition of the control signal value .

[0031] As an implementation manner of the present invention, the specific process of step four for selecting to connect or disconnect the connection between the automation device and the power supply according to the target control signal is as follows: If ≥ , then let , , ; substitute into the formula : ; where is the control signal value after control adjustment; is the number of control adjustment times, and ∈ ; is the initial proportional coefficient; is the initial integral coefficient; is the initial differential coefficient; is the proportional coefficient correction value; is the integral coefficient correction value; is the differential coefficient correction value; , , are successively the proportional coefficient correction value of the th adjustment, the integral coefficient correction value of the th adjustment, and the differential coefficient correction value of the th adjustment; is the judgment function: When > , then judge the current ; is the warning value; When ≤ , then judge the current ; When ≤ , then continue to connect the automation device and the power supply; When > , then disconnect the connection between the automation device and the power supply.

[0032] In the above technical solution, when ≥ , further control processing for obtaining the adjustment of the target control signal is performed. By adjusting the proportional coefficient , integral coefficient , and differential coefficient , the proportional coefficient , integral coefficient , and differential coefficient are replaced with: , , ; then the replaced values are substituted into the formula for calculation, and the obtained formula is . According to the obtained adjusted control signal value ; by taking the difference between the original control signal value and the adjusted , the adjustment of the connection process of the further automation device is selected.

[0033] It should be noted that the correction values , , are all obtained by proportional adjustment according to the size of the coefficient interval range after control adjustment, which will not be elaborated here; and when , and the warning value should ensure that the absolute value of the change in the real-time control signal value after the adjustment of the automation device > .

[0034] As an embodiment of the present invention, the charging control strategy includes: S1. Set different charging stages: S11. Constant current charging stage: When the battery is connected to the charging controller, the battery terminal voltage is detected, and the change range of the battery terminal is judged: If it belongs to the first-stage voltage threshold interval, it is charged with a first constant current; when the battery terminal voltage exceeds the maximum value of the first-stage voltage threshold interval, it enters the constant current pulse charging stage; S12. Constant current pulse charging stage: Charge with a second constant current for a first preset number of minutes, then stop charging for a second preset number of minutes, and repeat this process. When the battery terminal voltage exceeds the second-stage voltage, it transfers to the constant voltage charging stage; S13. Constant voltage charging stage: When constant voltage charging is performed with the second-stage voltage; as the battery terminal voltage increases, the charging current will gradually decrease; the charging current is detected. When the battery terminal voltage is greater than the second-stage voltage and the charging current gradually decreases to a first preset current, it enters the floating charge charging stage; otherwise, continue to perform constant voltage charging with the second-stage voltage; S14. Float charging stage: When the battery terminal is close to full charge, float charging is carried out at the third-stage voltage; when the charging current is less than the second preset current, charging stops.

[0035] In the above technical solution, by setting different charging stages, a staged charging process for the automation device is realized according to the charging control strategy. Each entire staged process is used as an adjustment period or reference information for the adjustment period. And when the power supply device receives the control adjustment signal, the charging control strategy generates adjustment information and outputs the number of adjustment times of the power supply device.

[0036] As an implementation manner of the present invention, the charging control strategy further includes: S2. Collect the real-time charging power according to the battery terminal charging voltage value and current value obtained in different charging stages, and set the charging fuzzy PID control algorithm; S3. Based on the adjustment amount output by the charging fuzzy PID control algorithm Construct a charging model and optimize the charging control strategy.

[0037] In the above technical solution, after setting different charging stages, by using the collected charging voltage value and current value and the set charging fuzzy PID control algorithm, the control adjustment process based on this algorithm is realized, and the output adjustment amount is the reference quantity for generating the proportional coefficient correction value , integral coefficient correction value , differential coefficient correction value subsequently according to the adjustment control; and then construct the corresponding charging model, accumulate the output values after the control adjustment and optimize the charging control strategy.

[0038] As an implementation manner of the present invention, the specific method for adjusting the maximum power in step two is: Determine the working state of the power supply device and judge whether the power supply device is in a low-power or idle state: If so, preferentially adjust the charging power of the power supply device in a low-load or idle state: If in a low-load state: according to the formula ; where is the adjustment coefficient determined according to the device state, and 0 < < 1; is the current power of the th power supply device, is the adjustment power of the th power supply device; If in an idle state: reduce its charging power to the minimum charging power maintenance value; If not, then adjust the charging mode of the automation device: Determine when the real-time total charging power is greater than a preset threshold and switch from the fast charging mode to the slow charging mode; Determine when the real-time total charging power is less than a preset threshold and switch from the slow charging mode to the fast charging mode.

[0039] In the above technical solution, by determining the working state of the power supply device, it is judged whether the power supply device is in a low-power or idle state to realize the adaptive adjustment of the maximum power. If it is in a low-power or idle state, the charging power of the power supply device in this state is preferentially adjusted; otherwise, the charging mode of the automation device is adjusted. First, the methods for adjusting the charging power include calculating and obtaining the adjusted power of the current power supply device according to the formula for the low-load state; for the idle state, its charging power is reduced to the minimum charging power maintenance value, and the minimum charging power maintenance value here is selected according to historical experience to ensure the normal operation state of the power supply device and reduce the load of other devices; second, the method for adjusting the charging mode of the automation device is: determine when the real-time total charging power is greater than a preset threshold and the automation device in the charging strategy switches from the fast charging mode to the slow charging mode; otherwise, the conversion from the slow charging mode to the fast charging mode is realized.

[0040] Each embodiment in this specification is described in a progressive manner. The same or similar parts between each embodiment can be referred to each other, and the key points of each embodiment are the differences from other embodiments. In particular, for the embodiments of the device, equipment, and non-volatile computer storage medium, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiments.

[0041] The above describes specific embodiments of this specification. Other embodiments are within the scope of the appended documents. In some cases, the actions or steps recorded in this application can be executed in a different order from that in the embodiments and still achieve the desired results. In addition, the processes depicted in the drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In certain embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0042] The above content is only an example and explanation of the concept of the present invention. Those skilled in the art of this technology can make various modifications or supplements to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the concept of the invention or exceed the scope defined by this application, they should all fall within the protection scope of the present invention.

Claims

1. A power supply charging method for an electric power system automation device, characterized in that: The method comprises: Step 1: The automation device receives a charging connection signal; Step 2: The automation device collects the actual charging power of multiple power supply devices in real time according to the charging control strategy, calculates and determines the real-time total charging power of the automation device and determines whether the real-time total charging power is greater than a preset threshold: If yes, adjust the maximum power and proceed to the next step; If not, continue to obtain the sum of the actual charging power of all power supply devices in real time; Step 3: receiving the detection result of the charging safety status of the automation device in real time, and determining the target control signal according to the adaptive model after determining the detection result; Step 4: Select to connect or disconnect the automation device from the power supply according to the target control signal.

2. A power supply charging method for an electric power system automation device according to claim 1, characterized in that: The step 3 receives the detection result of the charging safety status of the automation device in real time, and the specific method includes: By formula Calculate the real-time charging risk value ; in, is the total number of charging devices, and ∈ ; is the charging detection start time, is the charging detection termination time; and It is the charging detection time interval; To adjust the function; For the Real-time electrical performance parameters of charging of power supply equipment; By formula Calculate and obtain real-time electrical performance parameters of charging ; in, For the Within the charging control range of power supply equipment Maximum power; For the The average power value within the charging control interval of each power supply device; For the The average current value within the charging control interval of each power supply device; For the The average voltage within the charging control interval of each power supply device; The sampling interval The average power change reference value of the power supply equipment, and ≠0.

3. A power supply charging method for an electric power system automation device according to claim 2, characterized in that: The real-time charging risk value The preset charging risk value threshold interval Perform comparative analysis: like ≤ , it is judged that the current charging status of the automation device is normal; like < ≤ , it is judged that the current automation device has charging safety risks, and the charging control strategy is updated and optimized; like > , it is determined that the current automation device has a charging safety problem and generates a maintenance signal.

4. A power supply charging method for an electric power system automation device according to claim 1, characterized in that: The method of determining the target control signal is: By formula Calculate and obtain the control signal value ;in, , , They are the proportional coefficient, integral coefficient, and differential coefficient in the proportional-integral-differential controller, respectively; It is the real-time deviation signal and reflects the difference between the actual system and the ideal reference model; The control signal value With preset control signal value threshold To compare: like < , it is judged that the ideal control state has not been reached at present; like ≥ , it is determined that the ideal control state is currently reached, and the current control signal value is used as the parameter information of the target control signal to generate the target control signal.

5. A power supply charging method for an electric power system automation device according to claim 4, characterized in that: The specific process of step 4 selecting to connect or disconnect the automation device from the power supply according to the target control signal is as follows: like ≥ , then let , , ; Substitute into the formula middle: ;in, is the control signal value after control adjustment; To control the number of adjustments, and ∈ ; is the initial proportional coefficient; is the initial integration coefficient; is the initial differential coefficient; is the correction value of the proportionality factor; is the integral coefficient correction value; is the correction value of the differential coefficient; , , The first The proportional coefficient correction value of the first adjustment, The integral coefficient correction value of the first adjustment, The differential coefficient correction value of the adjustment; To judge the function: when > When , judge the current ; is the warning value; when ≤ When , judge the current ; when ≤ When the power supply is connected, the automation device continues to be connected; when > , disconnect the automation device from the power supply.

6. A power supply charging method for an electric power system automation device according to claim 1, characterized in that: The charging control strategy includes: S1. Set different charging stages: S11, constant current charging stage: when the battery terminal voltage variation range belongs to the first stage voltage threshold interval, charging is performed with the first constant current; when the battery terminal voltage exceeds the maximum value of the first stage voltage threshold interval, the constant current pulse charging stage is entered; S12, constant current pulse charging stage: charging with a second constant current for a first preset number of minutes, then stopping charging for a second preset number of minutes, repeating this process, and when the battery terminal voltage exceeds the second stage voltage, entering the constant voltage charging stage; S13, constant voltage charging stage: when the battery terminal voltage is greater than the second stage voltage, and the charging current gradually decreases to the first preset current, it enters the floating charging stage; S14, floating charge stage: when the battery terminal is close to being fully charged, floating charge is performed with the third stage voltage; when the charging current is less than the second preset current, charging is stopped.

7. A power supply charging method for an electric power system automation device according to claim 6, characterized in that: The charging control strategy also includes: S2. Collect the real-time charging power according to the charging voltage and current values ​​of the battery terminal obtained at different charging stages, and set the charging fuzzy PID control algorithm; S3, adjustment amount based on the output of charging fuzzy PID control algorithm Build a charging model and optimize the charging control strategy.

8. A power supply charging method for an electric power system automation device according to claim 1, characterized in that: The specific method of adjusting the maximum power in step 2 is: Determine the working status of the power supply device and judge whether the power supply device is in low power or idle state: If so, the charging power of the power supply device in low load or idle state is adjusted first: If it is in low load state: according to the formula ;in, is the adjustment coefficient determined according to the equipment status, and 0< <1; For the The current power of the power supply device, For the Adjust the power of each power supply device; If it is in idle state: reduce its charging power to the minimum charging power maintenance value; If not, adjust the automation device charging mode: Determine the real-time total power when charging Greater than the preset threshold When the battery is charged, switch from fast charging mode to slow charging mode; Determine the real-time total power when charging Less than the preset threshold , switch from slow charging mode to fast charging mode.

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