Power supply charging method for power system automation device

Abstract

The application relates to the technical field of device power supply, and particularly discloses a power supply charging method of an electric power system automation device, which realizes an intelligent distributed energy-saving charging control process of different charging stages of a battery. The method specifically comprises the following steps: step one, receiving a charging connection signal of the automation device; step two, collecting actual charging power of a plurality of power supply devices in real time according to a charging control strategy, calculating and determining real-time total charging power of the automation device, and judging whether the real-time total charging power is greater than a preset threshold; if yes, adjusting the maximum power, and entering the next step; if not, continuously acquiring the sum of the actual charging power of all the power supply devices in real time; step three, receiving a detection result of a charging safety state of the automation device in real time, determining the detection result, and determining a target control signal according to an adaptive model; and step four, selecting to connect or disconnect the automation device and the power supply according to the target control signal.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of device power supply, in particular to a power supply charging method of a power system automation device. BACKGROUND

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

[0003] With the rapid development of intelligent control technology, various control strategies such as genetic algorithm, ant colony algorithm and deep learning are used to realize the charging method design process of intelligent distributed power supply in combination with mathematical models.

[0004] In the existing process of realizing safe charging of power supply through automation devices, although the charging current can be optimized and adjusted to a certain extent according to the battery charge state, the change of charging voltage during different charging periods affects the stability of the chemical substances inside the battery charging, and it is difficult to predict and adjust in real time; therefore, it is difficult to optimize the charging according to the different charging stages of the battery, and realize the distributed energy-saving charging control process. SUMMARY

[0005] The purpose of the present application is to provide a power supply charging method of a power system automation device, which solves the following technical problems:

[0006] How to realize intelligent regulation of the distributed energy-saving charging control process of different charging stages of the battery.

[0007] The purpose of the present application can be achieved by the following technical solutions:

[0008] A power supply charging method of a power system automation device, the method comprising:

[0009] Step 1, receiving a charging connection signal by the automation device;

[0010] Step 2, the automation device collects the actual charging power of a plurality of power supply devices in real time according to the charging control strategy, calculates and determines the real-time total power of the automation device, and judges whether the real-time total power is greater than a preset threshold:

[0011] If yes, adjust the maximum power, and proceed to the next step;

[0012] If not, continue to obtain the sum of the actual charging power of all power supply devices in real time;

[0013] Step 3: Receive the detection result of the charging safety status of the automation device in real time, and determine the target control signal according to the adaptive model after determining the detection result;

[0014] Step 4: Select to connect or disconnect the automation device from the power supply according to the target control signal.

[0015] Preferably, the specific method of step 3 of receiving the detection result of the charging safety status of the automation device in real time includes:

[0016] By formula Calculate the real-time charging risk value ;

[0017] in, is the total number of charging devices, and ∈ ; is the charge detection start time, is the charge detection termination time; and It is the charging detection time interval; is the adjustment function; For the Real-time electrical performance parameters of charging of power supply equipment;

[0018] By formula Calculate and obtain real-time charging performance parameters ;

[0019] in, For the Within the charging control range of power supply equipment Maximum power; For the The average power value within the charging control range 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 range of each power supply device; The first The average power change reference value of the power supply equipment, and ≠0.

[0020] Preferably, the real-time charging risk value and the preset charging risk value threshold range Perform comparative analysis:

[0021] like ≤ , it is judged that the current charging status of the automation device is normal;

[0022] like < ≤ , then it is determined that the current automation device has a charging safety risk, and the charging control strategy is updated and optimized;

[0023] If > , then it is determined that the current automation device has a charging safety problem, and a maintenance signal is generated.

[0024] Preferably, the way to determine the target control signal is:

[0025] The control signal value is calculated by the formula ; wherein, , , , are the proportional coefficient, integral coefficient and differential coefficient in the proportional-integral-differential controller, respectively; is a real-time deviation signal quantity and reflects the difference between the actual system and the ideal reference model;

[0026] The control signal value is compared with the preset control signal value threshold :

[0027] If < , then it is determined that the ideal control state has not been reached;

[0028] If ≥ , then it is determined that the ideal control state has been reached, the current control signal value is taken as the parameter information of the target control signal, and the target control signal is generated.

[0029] Preferably, the specific process of step four for selecting the connection of the automation device and the power supply is:

[0030] If ≥ , then , , ; substitute into the formula :

[0031] ; wherein, is the control-adjusted control signal value; is the control adjustment number, and ∈ ; is the initial proportional coefficient; is the initial integral coefficient; is the initial differential coefficient; is a proportional coefficient correction value; is an integral coefficient correction value; is a differential coefficient correction value; , , is the proportional coefficient correction value of the first adjustment, the integral coefficient correction value of the first adjustment, and the differential coefficient correction value of the first adjustment, respectively; is the proportional coefficient correction value of the second adjustment, the integral coefficient correction value of the second adjustment, and the differential coefficient correction value of the second adjustment, respectively; is the proportional coefficient correction value of the third adjustment, the integral coefficient correction value of the third adjustment, and the differential coefficient correction value of the third adjustment, respectively; is the proportional coefficient correction value of the fourth adjustment, the integral coefficient correction value of the fourth adjustment, and the differential coefficient correction value of the fourth adjustment, respectively;

[0032] is a judgment function:

[0033] when > , it is judged that the current ; is a pre-warning value;

[0034] when ≤ , it is judged that the current ;

[0035] when ≤ , the connection between the automation device and the power supply is continued;

[0036] when > , the connection between the automation device and the power supply is disconnected.

[0037] Preferably, the charging control strategy comprises:

[0038] S1, setting different charging stages:

[0039] S11, constant current charging stage: when the battery is connected to the charging controller, the battery terminal voltage is detected, and when the battery terminal voltage range belongs to the first stage voltage threshold interval, the first constant current is charged; when the battery terminal voltage exceeds the maximum value of the first stage voltage threshold interval, the constant current pulse charging stage is entered;

[0040] 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, and repeating the process; when the battery terminal voltage exceeds the second stage voltage, the constant voltage charging stage is entered;

[0041] S13, constant voltage charging stage: constant voltage charging is performed at the second stage voltage; as the battery terminal voltage increases, the charging current gradually decreases; the charging current is detected, and when the battery terminal voltage is greater than the second stage voltage and the charging current gradually decreases to a first preset current, the floating charging stage is entered; otherwise, constant voltage charging is continued at the second stage voltage;

[0042] S14, floating charging stage: When the battery terminal is close to being fully charged, floating charging is performed with the third stage voltage; when the charging current is less than the second preset current, charging is stopped.

[0043] Preferably, the charging control strategy further includes:

[0044] S2. Collect real-time charging power based on the battery charging voltage and current values ​​obtained at different charging stages, and set the charging fuzzy PID control algorithm;

[0045] S3, adjustment amount based on the output of charging fuzzy PID control algorithm Build a charging model and optimize the charging control strategy.

[0046] Preferably, the specific method of adjusting the maximum power in step 2 is:

[0047] Determine the working status of the power supply device and whether it is in low power or idle state:

[0048] If so, prioritize adjusting the charging power of power supply devices that are in low load or idle state:

[0049] 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;

[0050] If in idle state: reduce its charging power to the minimum charging power maintenance value;

[0051] If not, adjust the charging mode of the automation device:

[0052] Determine the real-time total power when charging Greater than the preset threshold When the battery is fully charged, it switches from fast charging mode to slow charging mode;

[0053] Determine the real-time total power when charging Less than the preset threshold When the battery is fully charged, it switches from slow charging mode to fast charging mode.

[0054] Beneficial effects of the present invention:

[0055] (1) The application realizes the receiving of the charging connection signal through the automatic device to realize the starting of the charging, and realizes the connection of the charging power supply and the power supply equipment through the receiving of the charging connection signal; the automatic device collects the actual charging power of the multiple power supply equipment according to the designed charging control strategy, determines the real-time total power of the automatic device, judges whether the real-time total power is greater than the preset threshold, and if greater than the preset threshold, adjusts the maximum power; the adjustment of the maximum power is realized to realize the optimized power operation efficiency.

[0056] (2) The detection result of the charging safety state of the automatic device is received in real time, the target control signal is determined according to the adaptive model after the detection result is determined, 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, the corresponding processing measures are analyzed and matched according to the control state, the processing measures include selecting the connection or disconnection of the automatic device and the power supply, and the optimized charging control process is realized.

[0057] Of course, any product implementing the present application does not necessarily need to achieve all the advantages described above. BRIEF DESCRIPTION OF DRAWINGS

[0058] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed for the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0059] Figure 1 The power charging method of the power system automatic device of the present application is shown in the schematic diagram. DETAILED DESCRIPTION

[0060] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0061] Please refer to Figure 1 The present application is a power charging method of a power system automatic device, and the method comprises:

[0062] Step one, the automatic device receives the charging connection signal;

[0063] Step two, 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 power of the automation device, and judges whether the real-time total power is greater than the preset threshold:

[0064] If yes, the maximum power is adjusted, and the next step is entered;

[0065] If no, the sum of the actual charging power of all power supply devices is continuously obtained in real time;

[0066] Step three, the detection result of the charging safety state of the automation device is received in real time, and the target control signal is determined according to the adaptive model after the detection result is determined;

[0067] Step four, according to the target control signal, the connection between the automation device and the power supply is selected to be connected or disconnected.

[0068] In the prior art, the change of the charging voltage in different charging periods causes the change of the charging current, which affects the stability of the chemical substances in the battery charging, and it is difficult to predict and adjust in real time; therefore, it is difficult to optimize the charging according to different charging stages of the battery, and to realize the distributed energy-saving charging control process.

[0069] In order 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, and the specific steps are: first, the information confirmation of starting charging is realized by the automation device, and the information confirmation is set to receive the charging connection signal, and the connection between the charging power supply and the power supply device is realized by receiving the charging connection signal; then, the automation device collects the actual charging power in real time according to the designed charging control strategy. The 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 mathematical formula. The real-time total power is determined by statistical calculation based on the actual power of multiple power supply devices, and the corresponding processing is performed by judging the size of the real-time total charging power. The method determines whether the real-time total charging power is greater than a preset threshold. If so, the maximum power is adjusted and the next step is entered. Otherwise, the sum of the actual charging power of all power supply devices is obtained in real time, and the maximum power is adjusted to optimize the power operation efficiency. Next, the detection results of the charging safety status of the automation device are received in real time. After the detection results are determined, the target control signal is determined according to the adaptive model. A flexible charging control adjustment process is achieved through the detection of the charging safety status. Finally, the control state is determined based on the output of the target control signal, and the corresponding treatment measures are matched according to the control state analysis. The treatment measures include the selection of connecting or disconnecting the automation device from the power supply to achieve the optimization of the charging control process. The adaptive model is based on the model constructed according to the PID controller during the generation process of the target control signal, and is obtained by adaptively adjusting the model during the detection of charging safety adjustment.

[0070] As an embodiment of the present invention, the specific method of step 3 of receiving the detection result of the charging safety status of the automation device in real time includes:

[0071] By formula Calculate the real-time charging risk value ;

[0072] in, is the total number of charging devices, and ∈ ; is the charge detection start time, is the charge detection termination time; and It is the charging detection time interval; is the adjustment function; For the Real-time electrical performance parameters of charging of power supply equipment;

[0073] By formula Calculate and obtain real-time charging performance parameters ;

[0074] in, For the Within the charging control range of power supply equipment Maximum power; For the The average power value within the charging control range 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 range of each power supply device; The first The average power change reference value of the power supply equipment, and ≠0.

[0075] In the above technical solution, the formula Calculate the real-time charging risk value, detect the charging safety status of the automation device based on the real-time charging risk value, and complete the detection of multiple items such as output voltage, current accuracy, power factor and leakage protection; obtain the real-time electrical performance parameters of different charging equipment by accumulating Changing status to achieve accurate prediction of device charging risks.

[0076] By formula Calculate and obtain real-time charging performance parameters , the charging performance parameters are obtained by judging the power value, current value and voltage value of the charging control interval of the power supply equipment; wherein, the power peak value and the average value are subtracted and the absolute value is obtained. And the power parameter value fluctuation state according to the product of current and voltage Conduct comprehensive analysis to obtain real-time charging performance parameters ; and then through Adjust and analyze the status of charging to accurately obtain the real-time charging risk value .

[0077] Among them, the reference quantity involved above: adjustment function The adjustment function is obtained by fitting based on empirical test data, and is obtained by adaptively adjusting the periodic characteristics of charging performance parameters, which will not be detailed here; 、 、 、 All of them are obtained through simulation analysis based on historical data and will not be elaborated here.

[0078] As an embodiment of the present invention, the real-time charging risk value and the preset charging risk value threshold range Perform comparative analysis:

[0079] If ≤ , it is judged that the current automation device charging state is normal;

[0080] If ≤ , it is judged that the current automation device charging state is normal; , it is judged that the current automation device charging state is normal;

[0081] If ≤ , it is judged that the current automation device charging state is normal;

[0082] In the above technical solution, the historical set threshold interval is taken as the real-time charging risk value for comparison and analysis, and if ≤ , it is judged that the current automation device charging is in a safe state, and the charging state is normal; if ≤ , it is judged that the current automation device charging is in a risk range, and the automation device has a charging safety risk; if ≤ , it is judged that the current automation device is out of the safe charging range, and thus it is judged that there is a charging safety problem, and a maintenance signal of the automation device is generated.

[0083] As an embodiment of the present application, the way to determine the target control signal is:

[0084] The control signal value is calculated by the formula ; wherein, , , are the proportional coefficient, integral coefficient and differential coefficient in the proportional-integral-differential controller in turn; is the real-time deviation signal quantity, and reflects the difference between the actual system and the ideal reference model;

[0085] The control signal value is compared with the preset control signal value threshold :

[0086] If ≤ , it is judged that the current ideal control state has not been reached;

[0087] If ≥ ​, 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, and the target control signal is generated.

[0088] In the above technical solution, the target control signal is determined by the formula Calculate and obtain the control signal value ; By controlling the signal value Realize the judgment of control state and generate target control signal according to the result of ideal control state; build model according to PID controller and adjust the proportional coefficient in control algorithm , integral coefficient , differential coefficient Conduct comprehensive analysis of real-time deviation signal quantity; realize control signal value Accurate acquisition.

[0089] As an embodiment of the present invention, 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:

[0090] like ≥ , then let , , ; Substitute into the formula middle:

[0091] ;

[0092] 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 proportional coefficient; is the correction value of the integral coefficient; is the correction value of the differential coefficient; 、 、 In order 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;

[0093] For the judgment function:

[0094] when > When , judge the current ; is a pre-warning value;

[0095] When ≤ , it is determined that the current ;

[0096] When ≤ , the connection between the automation device and the power supply is continued.

[0097] When > , the connection between the automation device and the power supply is disconnected.

[0098] In the above technical solution, when ≥ , the control processing obtained by further adjusting the target control signal is obtained by adjusting the proportional coefficient , the integral coefficient , and the differential coefficient , replacing the proportional coefficient , the integral coefficient , and the differential coefficient with: , , ; then the replaced value is substituted into the formula for calculation, and the obtained formula is , according to the obtained adjusted control signal value ; by selecting the difference between the original control signal value and the adjusted , the adjustment of the connection process of the automation device is further selected.

[0099] It should be explained that the correction values , , are obtained by proportional adjustment according to the size of the coefficient interval range after control adjustment, which is not described in detail here; and when , and the size of the pre-warning value must ensure that the absolute value of the change of the real-time control signal value of the automation device after adjustment > .

[0100] As an embodiment of the present application, the charging control strategy includes:

[0101] S1, setting different charging stages:

[0102] S11, constant current charging phase: when the battery is connected to the charging controller, the battery terminal voltage is detected, and the battery terminal change range is judged: if it belongs to the first stage voltage threshold interval, it is charged 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 phase is entered;

[0103] S12, constant current pulse charging phase: charging with a second constant current for a first preset number of minutes, then stopping charging for a second preset number of minutes, repeating the process, when the battery terminal voltage exceeds the second stage voltage, entering the constant voltage charging phase;

[0104] S13, constant voltage charging phase: constant voltage 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 charging phase; otherwise, continue to charge with the second stage voltage constant voltage;

[0105] S14, floating charging phase: when the battery terminal has approached the full state, floating charging with the third stage voltage; when the charging current is less than the second preset current, stop charging.

[0106] In the above technical solution, by setting different charging stages, the automatic device is charged in stages according to the charging control strategy, and each stage is a regulation cycle or reference information for the regulation cycle. When the power supply device receives the control adjustment signal, the charging control strategy generates adjustment information and outputs the adjustment times of the power supply device.

[0107] As an embodiment of the present application, the charging control strategy further comprises:

[0108] S2, collect 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;

[0109] S3, the adjustment amount output by the charging fuzzy PID control algorithm Construct a charging model and optimize the charging control strategy.

[0110] In the above technical solution, based on the set different charging stages, the charging voltage value and current value collected and the charging fuzzy PID control algorithm set are used to realize the control adjustment process based on the algorithm, and the adjustment amount output is the proportional coefficient correction value , integral coefficient correction value , and differential coefficient correction value reference quantity; then build the corresponding charging model, accumulate the output value after control adjustment and optimize the charging control strategy.

[0111] As an embodiment of the present invention, the specific method of adjusting the maximum power in step 2 is:

[0112] Determine the working status of the power supply device and whether it is in low power or idle state:

[0113] If so, prioritize adjusting the charging power of power supply devices that are in low load or idle state:

[0114] 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;

[0115] If in idle state: reduce its charging power to the minimum charging power maintenance value;

[0116] If not, adjust the charging mode of the automation device:

[0117] Determine the real-time total power when charging Greater than the preset threshold When the battery is fully charged, it switches from fast charging mode to slow charging mode;

[0118] Determine the real-time total power when charging Less than the preset threshold When the battery is fully charged, it switches from slow charging mode to fast charging mode.

[0119] In the above technical solution, the maximum power is adaptively adjusted by determining the working state of the power supply device and judging whether the power supply device is in a low power or idle state. If it is in a low power or idle state, the charging power of the power supply device in this state is adjusted first; otherwise, the charging mode of the automation device is adjusted. First, the charging power adjustment method includes the following: Calculate and obtain the adjusted power of the current power supply equipment; for those in idle state, reduce their charging power to the minimum charging power maintenance value. The minimum charging power maintenance value here is selected based on historical experience to ensure the normal operation of the power supply equipment and reduce the load of other equipment; secondly, the method for adjusting the charging mode of the automation device is to determine the total power consumption when charging in real time. Greater than the preset threshold When the charging strategy is in the slow charging mode, the automatic device switches from the slow charging mode to the fast charging mode; otherwise, the slow charging mode is switched to the fast charging mode.

[0120] Each of the embodiments in the specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other. Each embodiment focuses on the difference from other embodiments. In particular, the device, the apparatus, and the non-transitory computer storage medium embodiments are basically similar to the method embodiments, and thus the description is relatively simple, and the relevant parts can be referred to the part of the method embodiments.

[0121] The above describes specific embodiments of the specification. Other embodiments are within the scope of the attached files. In some cases, the actions or steps described in the application can be performed in an order different 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 some embodiments, multi-task processing and parallel processing are possible or can be advantageous.

[0122] The above is only an example and description of the concept of the present application. Those skilled in the art can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, as long as they do not deviate from the concept of the invention or exceed the scope defined in the application. It shall belong to the protection scope of the present application.

Claims

1. A power supply charging method of a power system automation device, characterized by, The method comprises: Step one, the automatic device receives a charging connection signal; Step two, the automatic device collects the actual charging power of multiple power supply devices in real time according to a charging control strategy, calculates 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 yes, the maximum power is adjusted, and the next step is entered; If no, the sum of the actual charging power of all power supply devices is continuously obtained in real time; Step three, the detection result of the charging safety state of the automatic device is received in real time, and the target control signal is determined according to an adaptive model after the detection result is determined; The specific method of step three includes: The real-time charging risk value is calculated by the formula ;​ wherein, is the total number of charging devices, and ∈ ; is the charging detection start time, is the charging detection end time; and is the charging detection time interval; is the adjustment function; is the real-time electrical performance parameter of the th power supply device. The real-time electric performance parameters of charging are calculated by the formula ;​ in, For the Within the charging control range of power supply equipment Maximum power; For the The average power value within the charging control range 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 range of each power supply device; The first The average power change reference value of the power supply equipment, and ≠0; Step four, according to the target control signal, the connection between the automatic device and the power supply is selected to be connected or disconnected.

2. The power supply charging method of an electric power system automation device according to claim 1, characterized by, comparing the real-time charging risk value with a preset charging risk value threshold interval performing a comparison analysis: If ≤ , then the current automation device charging state is normal; If < ≤ , it is determined that the current automation device has a charging safety risk, and the charging control strategy is updated and optimized. If < / < / If the current automation device has a charging safety problem, a maintenance signal is generated.

3. The power charging method of the power system automation device according to claim 1, characterized in that, The way to determine the target control signal is: The control signal value is calculated by the formula ; wherein , , are, in sequence, a proportional coefficient, an integral coefficient, and a differential coefficient in a proportional-integral-differential controller; is a real-time deviation signal quantity and reflects the difference between an actual system and an ideal reference model;​ comparing the control signal value with a preset control signal value threshold are compared: If < then it is determined that the ideal control state is not currently achieved. If ≥ , it is judged that the ideal control state is reached, the current control signal value is taken as the parameter information of the target control signal, and the target control signal is generated.

4. The power supply charging method of an electric power system automation device according to claim 3, characterized by, The specific process of step four is: If ≥ , then let , , ; and substitute into equation . ; 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 proportional coefficient; is the correction value of the integral coefficient; is the correction value of the differential coefficient; 、 、 In order 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 function: When is greater than the pre-warning value, it is determined that the current ; is a pre-warning value.​ When ≤ , then determine that the current ; When ≤ then the connection of the automation device to the power supply is continued. When the connection of the automation device to the power supply is disconnected.​ 5. The power charging method of the 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 change range belongs to the first stage voltage threshold interval, 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 the process; when the battery terminal voltage exceeds the second stage voltage, enter 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, enter the floating charging stage; S14, floating charging stage: when the battery terminal has approached the full state, charge with the third stage voltage; when the charging current is less than the second preset current, stop charging.

6. The power supply charging method of an electric power system automation device according to claim 5, characterized by, 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, the adjusting amount output based on the charging fuzzy PID control algorithm A charging model is constructed and the optimization of the charging control strategy is performed.

7. The power charging method of the power system automation device according to claim 1, characterized in that, The specific way of 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 yes, the charging power of the power supply device in the low-load or idle state is adjusted preferentially: 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 in the idle state: reduce the charging power to the minimum charging power maintenance value; If no, adjust the charging mode of the automatic device: determining whether the real-time total power of charging is greater than a preset threshold value when the real-time total power of charging is greater than a preset threshold value switching from the fast charging mode to the slow charging mode determining when the real-time total power of charging is less than a preset threshold switching from the slow charging mode to the fast charging mode.

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