Transformer adjusting method and system of preassembled distribution and charging integrated charging station

Abstract

The invention discloses a voltage transformation regulation method and system of a preassembled distribution and charging integrated charging station, and belongs to the technical field of charging station energy storage management. The method comprises the steps that a voltage transformation rectification module and a charging module are arranged, and the input end of the voltage transformation rectification module is connected with a power grid; the input end of the charging module is connected with the output end of the voltage transformation and rectification module; the method comprises the following steps: acquiring charging station data, setting an electricity storage scale according to the acquired charging station data, setting a corresponding electricity storage module according to the acquired electricity storage scale, and connecting the electricity storage module with an input end of a charging module; performing power storage planning of a power storage module according to the obtained charging station data, and outputting a power storage planning scheme of the power storage module; performing power storage control on a power storage module according to the obtained power storage planning scheme; therefore, the purposes of reducing the load pressure of the transformation and rectification module and improving the maximum output power within a period of time are achieved; the problem that the charging station cannot provide enough output power during the peak power utilization period is solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of energy storage management of charging stations, and specifically relates to a voltage transformation and regulation method and system for a pre-installed charging station with integrated distribution and charging. Background Art

[0002] As a new generation of transportation to replace traditional gasoline cars, electric vehicles are of great significance in reducing fossil energy consumption and greenhouse gas emissions. In order to realize the operation of electric vehicles, they need to be provided with electric energy. Therefore, the construction of large-scale electric vehicle charging stations as a basic link in electric energy supply is of great significance to the future development of electric vehicles.

[0003] However, with the increasing number of electric vehicles, charging stations are unable to provide sufficient output power during peak hours of electricity consumption, forcing car owners to wait for charging, and in serious cases, traffic jams may occur.

[0004] For example, the Chinese patent application with publication number CN111231724A discloses an electric vehicle charging station operation control system and method, which relates to the field of charging station operation control technology, including diesel generator sets, photovoltaic arrays, batteries, voltage source converters, boost converters and bidirectional DCDC converters; by optimizing the control strategy, the power of solar photovoltaic and battery energy storage systems is first used, then the power grid is used, and finally when other forms of charging are not available, the diesel generator sets are used to generate electricity. This charging station operation strategy increases the reliability of the charging station and helps to reduce the operating costs of the charging station.

[0005] The above patent increases the reliability of charging stations by using photovoltaic systems and diesel generators in combination, but it is difficult to apply to many charging stations because many charging stations lack corresponding supporting conditions and require higher investment costs.

[0006] Therefore, in order to solve the charging problem of the above-mentioned charging station, the present invention provides a voltage transformation and regulation method and system for a pre-installed integrated charging station. Summary of the invention

[0007] In order to solve the problems existing in the above-mentioned scheme, the present invention provides a voltage transformation and regulation method and system for a pre-installed integrated charging station, which solves the problem that the charging station cannot provide sufficient output power during peak power consumption.

[0008] The purpose of the present invention can be achieved through the following technical solutions:

[0009] A voltage transformation and regulation method for a pre-installed charging station with integrated charging and discharging, the method comprising:

[0010] Step S1: Setting a transformer-rectifier module and a charging module, connecting the input end of the transformer-rectifier module to the power grid; connecting the input end of the charging module to the output end of the transformer-rectifier module;

[0011] Step S2: acquiring charging station data, setting a power storage scale according to the acquired charging station data, setting a corresponding power storage module according to the acquired power storage scale, and connecting the power storage module to the input end of the charging module;

[0012] Furthermore, the method for setting the power storage scale according to the charging station data includes:

[0013] Determine the charging demand of the charging station at each time according to the charging station data, and draw a charging demand distribution curve according to the obtained charging demand at each time;

[0014] The replenishment period is marked according to the charging demand distribution diagram, and each replenishment period segment included in the replenishment period is identified. The replenishment period segment is marked as i, where i=1, 2, ..., n, and n is the number of corresponding replenishment periods; the time span of each replenishment period segment is marked as [t 1i , t 2i ], identify the curve function corresponding to each supplementary period in the charging demand distribution curve in the supplementary period, marked as f(xi); according to the standard energy storage formula Calculate the corresponding standard energy storage value, where A is the maximum supply of the charging station; set the power storage scale according to the obtained standard energy storage value.

[0015] Furthermore, the method for setting the power storage scale according to the obtained standard energy storage value includes:

[0016] Establishing a supplement coefficient matching table, wherein the supplement coefficient matching table includes supplement coefficients corresponding to each standard energy storage value interval;

[0017] According to the obtained standard energy storage value, the corresponding supplementary coefficient is matched from the supplementary coefficient matching table, the obtained supplementary coefficient is marked as λ, and the corresponding adaptive energy storage value is calculated according to the formula SCN=λ×CN; various power storage scales are identified, matched according to the adaptive energy storage value, and the corresponding energy storage scale is determined.

[0018] Furthermore, the value range of the supplementary coefficient is (1, 1.5].

[0019] Step S3: performing power storage planning of the power storage module according to the obtained charging station data, and outputting the power storage planning scheme of the power storage module;

[0020] Furthermore, the setting method of the power storage planning scheme is:

[0021] The peak and valley periods of electricity consumption of the charging station are determined based on the charging station data and the distribution map of charging demand. Electricity is stored during the valley period and discharged during the peak period. After integration, a storage planning scheme is formed.

[0022] Furthermore, another method for setting up the power storage planning scheme is:

[0023] Set the power analysis curve according to the charging demand distribution curve;

[0024] Obtain the power supply price curve and the power storage price curve of the charging station, set the price difference curve according to the power supply price curve and the power storage price curve of the charging station, divide each allowed charging segment in the power analysis curve according to the price difference curve, and obtain a number of unit segments; set a corresponding priority for each unit segment in order from large to small price difference; mark the unit attributes of each unit segment, and the unit attributes include price difference, priority and maximum unit charging capacity;

[0025] A power storage planning model is established according to the properties of each unit and the power analysis curve; the current remaining power storage capacity of the power storage module is obtained in real time; the remaining power storage capacity obtained is analyzed through the power storage planning model to obtain the corresponding power storage planning solution.

[0026] Furthermore, the method for setting the power analysis curve includes:

[0027] Marking the corresponding allowed charging period in the charging demand distribution curve, wherein the allowed charging period includes a plurality of allowed charging segments; identifying the corresponding transmission segments according to the allowed power supply period, determining the minimum reserve power corresponding to the power storage module according to the charging demand distribution curve corresponding to each transmission segment, and marking the obtained minimum reserve power corresponding to each transmission segment in the charging demand distribution curve;

[0028] Determine the maximum charge capacity of the power storage module in each allowed charging section, and mark the obtained maximum charge capacity in the charging demand distribution curve;

[0029] The corresponding minimum reserve power is adjusted according to each maximum charge capacity, and each adjusted minimum storage power is marked as a limited power; the current charging demand distribution curve is marked as a power analysis curve.

[0030] Furthermore, the method for establishing the power storage planning model includes:

[0031] Step S31: sorting the units according to their priorities, identifying the current remaining storage capacity of the power storage module in real time, and marking the remaining storage capacity in the power analysis curve accordingly;

[0032] Step S32: charging according to the maximum unit charge amount corresponding to the unit attribute of the corresponding unit segment in the priority sorting, and the cycle is N times, where N is a positive integer;

[0033] According to the cell attributes of the corresponding cell segment in the priority sorting, charging is performed one by one according to the sorting. When the first-ranked cell is charged, the second-ranked cell is charged next time, and so on.

[0034] Step S33: determine whether the power analysis curve meets the requirements; if it meets the requirements, go to step S34, otherwise, return to step S32;

[0035] Step S34: Identify the charge capacity corresponding to each unit segment and mark it as the target charge capacity;

[0036] Step S35: Establishing an electricity storage planning model according to the electricity storage planning method of steps S31 to S34.

[0037] Furthermore, when the power storage planning model cannot output a power storage planning solution, the solution with the smallest gap with the requirement is output as the power storage planning solution.

[0038] Furthermore, another method for setting up the power storage planning scheme is:

[0039] Obtaining the power analysis curve and each unit segment, marking the unit segment accordingly in the power analysis curve to form a comprehensive analysis curve;

[0040] Obtain the real-time storage capacity of the power storage module, and mark the obtained real-time storage capacity accordingly in the comprehensive analysis curve; calculate the minimum replenishment capacity corresponding to the next transmission section in real time according to the comprehensive analysis curve, and calculate the minimum replenishment capacity in the corresponding allowed charging section according to the limited power and the current storage capacity;

[0041] Identify the unit attributes of each unit segment in the allowed charging segment, allocate the minimum replenishment amount to each unit segment according to the unit attributes of each unit segment, allocate according to the priority of each unit segment, and allocate according to the maximum unit charging amount until all the minimum replenishment amounts are allocated;

[0042] A comprehensive analysis is performed on the properties of each unit segment in the allowed charging segment to determine whether it has greater economic benefits compared to the unit segments that need to be charged later, a corresponding training set is manually established in the above manner, a corresponding optimization model is established based on a CNN network or a DNN network, training is performed using the established training set, and analysis is performed using the optimization model after successful training to obtain the additional charging capacity of the allowed charging segment, and the obtained additional charging capacity is distributed according to the maximum unit charging capacity until all the additional charging capacity is distributed.

[0043] Step S4: performing power storage control of the power storage module according to the obtained power storage planning scheme.

[0044] A voltage transformation and regulation system for a pre-installed charging station with integrated charging and discharging, comprising a voltage transformation and rectification module, a charging module, a power storage module and a power storage analysis module;

[0045] Connect the input end of the transformer and rectifier module to the power grid; connect the input end of the charging module to the output end of the transformer and rectifier module; connect the power storage module to the input end of the charging module;

[0046] The electricity analysis module is used to perform electricity storage analysis and management on the electricity storage module.

[0047] A voltage transformer and regulator device for a pre-installed charging station with integrated charging and discharging, comprising:

[0048] Memory for storing computer programs;

[0049] A processor is used to implement the steps of a voltage transformation and regulation method for a pre-installed integrated charging station when executing a computer program.

[0050] A computer-readable storage medium stores a computer program, which, when executed by a processor, implements the steps of a voltage transformation and regulation method for a preinstalled integrated charging station.

[0051] Compared with the prior art, the present invention has the following beneficial effects:

[0052] The present invention connects the power grid through the input end of the transformer-rectifier module, connects the input end of the charging module to the output end of the transformer-rectifier module, and connects the power storage module to the input end of the charging module. By setting the power storage module, the load pressure of the transformer-rectifier module is reduced and the maximum output power is increased within a period of time. The power storage module stores power during low power consumption and discharges power during peak power consumption. The problem that the charging station cannot provide sufficient output power during peak power consumption is solved. At the same time, by determining the power storage scale according to the charging station data, the intelligent setting of the power storage specifications of the power storage module is realized, and the modification burden of the existing charging station is reduced. In particular, for corporate managers who lack relevant professional knowledge, they can understand the corresponding power storage specifications through intelligent analysis, and avoid setting based on the one-sided words of the salesperson. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0054] Figure 1 is a flow chart of the method of the present invention;

[0055] Figure 2 This is an example diagram of the electric quantity analysis curve of the present invention;

[0056] Figure 3 This is a schematic diagram of an example of scenario 1 of the present invention. DETAILED DESCRIPTION

[0057] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0058] like Figures 1 to 3 As shown, a voltage transformation and regulation method for a pre-installed charging station with integrated charging and discharging is provided, the method comprising:

[0059] Step S1: Setting a transformer-rectifier module and a charging module, connecting the input end of the transformer-rectifier module to the power grid; connecting the input end of the charging module to the output end of the transformer-rectifier module;

[0060] The configuration method of the transformer-rectifier module and the charging module and the corresponding connection method are all configured using the existing charging station establishment technology.

[0061] Step S2: acquiring charging station data, setting a power storage scale according to the acquired charging station data, setting a corresponding power storage module according to the acquired power storage scale, and connecting the power storage module to the input end of the charging module;

[0062] This is to reduce the load pressure of the transformer and rectifier module and increase the maximum output power within a period of time.

[0063] The charging station data includes the scale of the charging station, historical charging record data, detailed charging design data and other relevant data, including various existing data that can be obtained for subsequent applications. If a new charging station does not have direct historical charging record data, the charging data corresponding to the charging station can be estimated based on the relevant charging data of the charging stations around the charging station, which can be used for subsequent analysis of the charging distribution of the charging station, understanding the charging conditions in each time period, and facilitating dynamic management.

[0064] Methods for setting the power storage scale based on charging station data include:

[0065] The charging demand of the charging station at each moment is determined according to the charging station data. The charging demand is set according to the historical maximum charging amount at each moment in the charging data, that is, the actual maximum charging amount at the moment is analyzed according to the historical maximum charging amount at the corresponding moment. If it does not exceed the supply capacity of the charging station, the charging demand at the moment is the corresponding historical maximum charging amount. If the maximum supply capacity of the charging station is reached, it means that the actual charging demand will exceed the historical maximum charging amount, and the charging demand at the moment is amplified according to the corresponding ratio. The corresponding amplification ratio is set manually by estimation; a charging demand distribution curve of the charging station is generated.

[0066] The replenishment period is marked according to the distribution diagram of charging demand. The replenishment period refers to the period in which the charging demand is greater than the maximum supply of the charging station. The maximum supply refers to the maximum output at the same time. The replenishment period is marked as T i , i represents the corresponding supplementary period. Because in period application, the supplementary period may not be a complete time period, so each supplementary period in the supplementary period is marked as i, where i = 1, 2, ..., n, and n is the number of corresponding supplementary periods; the time span of each supplementary period is marked as [t 1i , t 2i ], identify the curve function corresponding to each supplementary period in the charging demand distribution curve in the supplementary period, marked as f(xi); according to the standard energy storage formula Calculate the corresponding standard energy storage value, where A is the maximum supply of the charging station.

[0067] The power storage scale is set according to the obtained standard energy storage value, and the corresponding supplementary coefficient is set according to the management requirements of the enterprise to expand the standard energy storage value. The general value range is (1, 1.5]; that is, the supplementary coefficient corresponding to different standard energy storage value intervals can be set manually, and after sorting, the image supplementary coefficient matching table is formed. According to the obtained standard energy storage value, the corresponding supplementary coefficient is matched from the supplementary coefficient matching standard, marked as λ, and the corresponding adaptive energy storage value is calculated according to the formula SCN = λ × CN; identify the various power storage scales of the current design specification, match them according to the calculated adaptive energy storage value, and determine the corresponding energy storage scale, that is, the matched power storage scale is just enough to meet the adaptive energy storage value.

[0068] By setting up a power storage module, the load pressure of the transformer and rectifier module can be reduced, and the maximum output power can be increased within a period of time. At the same time, by determining the power storage scale according to the charging station data, the power storage specifications of the power storage module can be intelligently set, reducing the modification burden of existing charging stations. In particular, for corporate managers who lack relevant professional knowledge, they can understand the corresponding power storage specifications through intelligent analysis and avoid setting them based solely on the one-sided words of sales personnel.

[0069] Step S3: performing power storage planning of the power storage module according to the obtained charging station data, and outputting the power storage planning scheme of the power storage module;

[0070] In one embodiment, the method for setting the power storage planning scheme is:

[0071] The peak and valley periods of electricity consumption of the charging station are determined based on the charging station data and the distribution map of charging demand. Electricity is stored during the valley period and discharged during the peak period. After integration, a storage planning scheme is formed.

[0072] This approach can improve the efficiency of charging stations while reducing the impact on the power grid.

[0073] In another embodiment, the above method has room for improvement, because when storing electricity in the above method, when the electricity is stored during the low electricity consumption period, due to the difference in the existing storage capacity, it will appear that the battery will be fully charged after a period of time after the start of charging, and the subsequent minimum electricity price is not enjoyed, or the peak and valley electricity price benefits are not fully utilized; and when storing electricity only during the low electricity consumption period, it is also easy to appear in a certain supplementary period that the storage module cannot fully work during the supplementary period due to insufficient storage capacity, resulting in failure to provide sufficient output power; therefore, in this embodiment, the setting method of the storage planning scheme is:

[0074] Obtain a charging demand distribution curve, and mark the corresponding allowed charging period in the charging demand distribution curve. The allowed charging period refers to a time period when the charging demand is less than the maximum supply of the power supply station, and is composed of multiple allowed charging segments; identify the corresponding transmission segments according to the allowed power supply period, and the transmission segment refers to the time period when the power storage module supplies power to the outside; determine the minimum reserve power of the corresponding power storage module at this time according to the charging demand distribution curve corresponding to each transmission segment, that is, determine the minimum reserve power that the power storage module should have before entering the transmission segment according to the power storage module that needs to output in each transmission segment, and mark the obtained minimum reserve power corresponding to each transmission segment in the charging demand distribution curve;

[0075] According to the charging efficiency of the power storage module in each time period, the maximum charging capacity of the power storage module in each allowable charging section is determined, and the obtained maximum charging capacity is marked in the charging demand distribution curve;

[0076] The minimum reserve power and the maximum charge power are generally marked together at the front end of the transmission end. Figure 2 shown.

[0077] The corresponding minimum reserve power is adjusted according to the maximum charge capacity, that is, the sum of the maximum charge capacity and the remaining storage capacity must not be less than the minimum reserve power. The remaining power at the end of the output section can be calculated according to the minimum reserve power and the usage of the output section, and then the minimum reserve power is adjusted; the adjusted current minimum storage power is marked as the limit power; that is, when reaching the front end point of the transmission section, the stored power must not be less than the limit power; the current charging demand distribution curve is marked as the power analysis curve.

[0078] Obtain the power supply price curve and power storage price curve of the charging station. Power supply refers to supplying power to electric vehicles; power storage refers to charging the power storage module. Set the price difference curve according to the power supply price curve and power storage price curve of the charging station, and use price difference = power supply price - power storage price; divide the allowed charging segments in the power analysis curve according to the price difference curve to obtain several unit segments. The standard for segmentation is whether the price difference is the same, that is, the allowed charging segments are divided according to the time period of the same price difference; set the corresponding priority for each corresponding unit segment in the order of price difference from large to small, such as the priority of the largest price difference is 1, the second is 2, and so on; mark the unit attributes of each unit segment, which include price difference, priority and maximum unit charge; the maximum unit charge refers to the maximum storage capacity in the unit segment.

[0079] The unit segment with the highest priority is taken as the reference unit, and it is assumed that the reference unit charges the power storage module according to the maximum unit charge amount, and whether the requirements are met in the power analysis curve is analyzed; if the requirements are met, the charging plan is completed and charging is performed according to the corresponding charging plan; if the requirements are not met, the unit segment with the next highest priority is identified, and the power storage module is charged according to the maximum unit charge amount of the unit attribute, and whether the requirements are met in the power analysis curve is analyzed; and so on, until the requirements are met.

[0080] The power storage module is charged according to the maximum unit charging capacity of the unit attribute, and the charge is stopped when the maximum storage capacity of the power storage module is reached.

[0081] Among them, the method for analyzing whether the requirements are met in the power analysis curve is:

[0082] The remaining storage capacity of the power storage unit is calculated based on the remaining capacity of the previous transmission section to determine whether it can meet the requirements of each restricted capacity. If all are met, it meets the requirements, otherwise it does not meet the requirements.

[0083] In one embodiment, in actual application, due to various situations, the remaining storage capacity of the power storage module will be different. Therefore, in order to quickly carry out charging planning later, a power storage planning model is established according to the previous embodiment, and power storage planning is carried out according to the power storage planning model. The method is as follows:

[0084] Step S31: sorting the units according to their priorities, identifying the current remaining storage capacity of the power storage module in real time, and marking the remaining storage capacity in the power analysis curve accordingly;

[0085] Step S32: charging according to the maximum unit charge amount corresponding to the unit attribute of the corresponding unit segment in the priority sorting, for N times, where N is a positive integer greater than 30;

[0086] According to the cell attributes of the corresponding cell segment in the priority sorting, charging is performed one by one according to the sorting. When the first-ranked cell is charged, the second-ranked cell is charged next time, and so on.

[0087] Step S33: determine whether the power analysis curve meets the requirements; if it meets the requirements, go to step S24, otherwise, return to step S22;

[0088] Step S34: Identify the charge capacity corresponding to each unit segment and mark it as the target charge capacity;

[0089] Step S35: Establishing an electricity storage planning model according to the electricity storage planning method of steps S31 to S34.

[0090] Through this embodiment, the optimal power storage planning in multiple situations can be achieved, even if the situation is caused by special circumstances, it can also be applied, and it is not just considering the benefit. For example, Figure 3 As shown;

[0091] Scenario 1:

[0092] Due to power outages and other reasons, the energy storage module has not been charged before, resulting in the inability to fully meet the needs of the next transmission section. According to the analysis principle of the energy storage planning model, in order to meet the requirements, it is necessary to continuously analyze the unit segment between the example point and the front end point for charging until it meets the requirements. When the requirements are met, continued analysis will optimize the charging of the first several unit segments traversed before, and still maintain the maximum benefit.

[0093] In one embodiment, when the power storage planning model still cannot output the power storage planning solution, it indicates that the requirements cannot be fully met, and the most recent power storage planning solution is output; such as scenario 2.

[0094] Scenario 2: Figure 3 , because of the location of the sample point, even if all the unit segments between the sample point and the front end point are fully charged, it is still impossible to meet the requirements. The power storage planning scheme with the smallest output gap is implemented accordingly.

[0095] In other embodiments, considering the handling of special situations, comprehensive settings can be made directly from two directions, that is, comprehensive settings can be made from the two perspectives of price difference and charging amount, and the weight coefficients of the price difference and the charging amount can be dynamically adjusted according to the actual situation to achieve comprehensive consideration. For example, in the case corresponding to scenario 2, the weight of the charging amount should be extremely large at this time, and the influence of the price difference can be directly ignored when necessary; the specific method is as follows:

[0096] Obtaining the power analysis curve and each unit segment, marking the unit segment accordingly in the power analysis curve to form a comprehensive analysis curve;

[0097] Obtain the real-time storage capacity of the power storage module, and mark the obtained real-time storage capacity accordingly in the comprehensive analysis curve; calculate the minimum replenishment capacity corresponding to the next transmission section in real time according to the comprehensive analysis curve, and calculate the minimum replenishment capacity in the corresponding allowed charging section according to the limited power and the current storage capacity;

[0098] Identify the unit attributes of each unit segment in the allowed charging segment, allocate the minimum replenishment amount to each unit segment according to the unit attributes of each unit segment, allocate according to the priority of each unit segment, and allocate according to the maximum unit charging amount until all the minimum replenishment amounts are allocated;

[0099] A comprehensive analysis is performed on the properties of each unit segment in the allowed charging segment to determine whether it has more economic benefits compared with the unit segments that need to be charged later. For example, according to continuous analysis, charging is still required in the next allowed charging segment, but the priority of the unit segment that needs to be charged is lower than the priority of the unit segment that has not reached the maximum unit charging amount in the current allowed charging segment. For economic benefits, charging should be performed again in the current allowed charging segment to exceed the minimum replenishment amount. Specifically, a corresponding training set can be established manually in the above manner, a corresponding optimization model can be established based on a CNN network or a DNN network, training is performed using the established training set, and analysis is performed using the optimization model after successful training to obtain the additional charging amount of the allowed charging segment, and the obtained additional charging amount is distributed according to the maximum unit charging amount until all the additional charging amounts are distributed. Because neural networks are prior art in this field, the specific establishment and training process will not be described in detail in the present invention.

[0100] Step S4: performing power storage control of the power storage module according to the obtained power storage planning scheme.

[0101] The present invention connects the input end of the transformer-rectifier module to the power grid, the input end of the charging module to the output end of the transformer-rectifier module, and the power storage module to the input end of the charging module, so as to reduce the load pressure of the transformer-rectifier module and increase the maximum output power within a period of time; the power storage module stores power during low power consumption and discharges power during peak power consumption, thus solving the problem that the charging station cannot provide sufficient output power during peak power consumption.

[0102] A voltage transformation and regulation system for a pre-installed charging station with integrated charging and discharging, comprising a voltage transformation and rectification module, a charging module, a power storage module and a power storage analysis module;

[0103] Connect the input end of the transformer and rectifier module to the power grid; connect the input end of the charging module to the output end of the transformer and rectifier module; connect the power storage module to the input end of the charging module;

[0104] The electricity analysis module is used to perform electricity storage analysis and management on the electricity storage module.

[0105] The specific undisclosed part refers to a voltage transformation and regulation method of a pre-installed integrated charging station.

[0106] A voltage transformer and regulator for a pre-installed charging station with integrated charging and discharging.

[0107] The regulating device comprises: a memory for storing a computer program;

[0108] The processor is used to implement the steps of the method in the above embodiment (a voltage transformation and regulation method for a preinstalled integrated charging station) when executing a computer program.

[0109] The computer-readable storage medium provided in this embodiment has a computer program stored thereon, and when the processor executes the program, the following method can be implemented: a voltage transformation and regulation method for a preinstalled integrated charging station, comprising: setting a voltage transformation and rectification module and a charging module, connecting the input end of the voltage transformation and rectification module to the power grid; connecting the input end of the charging module to the output end of the voltage transformation and rectification module; acquiring charging station data, setting a power storage scale according to the obtained charging station data, setting a corresponding power storage module according to the obtained power storage scale, and connecting the power storage module to the input end of the charging module; performing power storage planning of the power storage module according to the obtained charging station data, and outputting a power storage planning scheme of the power storage module; and performing power storage control of the power storage module according to the obtained power storage planning scheme.

[0110] The above formulas are all calculated by removing dimensions and taking numerical values. The formula is a formula that is closest to the actual situation obtained by collecting a large amount of data and performing software simulation. The preset parameters and preset thresholds in the formula are set by technical personnel in this field according to actual conditions or obtained by simulating a large amount of data.

[0111] The above embodiments are only used to illustrate the technical method of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical method of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the present invention.

Claims

1. A voltage transformation and regulation method for a pre-installed charging station with integrated charging, characterized in that: Methods include: Step S1: Setting a transformer-rectifier module and a charging module, connecting the input end of the transformer-rectifier module to the power grid; connecting the input end of the charging module to the output end of the transformer-rectifier module; Step S2: acquiring charging station data, setting a power storage scale according to the acquired charging station data, setting a corresponding power storage module according to the acquired power storage scale, and connecting the power storage module to the input end of the charging module; Methods for setting the power storage scale based on charging station data include: Determine the charging demand of the charging station at each time according to the charging station data, and draw a charging demand distribution curve according to the obtained charging demand at each time; Mark the replenishment period according to the charging demand distribution map, identify the various replenishment periods included in the replenishment period, and mark the replenishment period as i, where i = 1, 2, ..., n, and n is the number of corresponding replenishment periods; mark the time span of each replenishment period as [t 1i , t 2i ], identify the corresponding curve function of each supplementary period in the charging demand distribution curve in the supplementary period, marked as f(xi); according to the standard energy storage formula Calculate the corresponding standard energy storage value, where A is the maximum supply of the charging station; set the power storage scale according to the obtained standard energy storage value; Step S3: performing power storage planning of the power storage module according to the obtained charging station data, and outputting the power storage planning scheme of the power storage module; Step S4: performing power storage control of the power storage module according to the obtained power storage planning scheme.

2. The voltage transformation and regulation method of a pre-installed charging station with integrated charging and discharging according to claim 1 is characterized in that: Methods for setting the power storage scale based on the obtained standard energy storage value include: Establishing a supplement coefficient matching table, wherein the supplement coefficient matching table includes supplement coefficients corresponding to each standard energy storage value interval; According to the obtained standard energy storage value, the corresponding supplementary coefficient is matched from the supplementary coefficient matching table, the obtained supplementary coefficient is marked as λ, and the corresponding adaptive energy storage value is calculated according to the formula SCN=λ×CN; various power storage scales are identified, matched according to the adaptive energy storage value, and the corresponding energy storage scale is determined.

3. The voltage transformation and regulation method of a pre-installed charging station with integrated charging and discharging according to claim 2 is characterized in that: The value range of the supplementary coefficient is (1, 1.5].

4. The voltage transformation and regulation method of a pre-installed charging station with integrated charging and discharging according to claim 1 is characterized in that: The method for setting up the power storage planning scheme is as follows: The peak and valley periods of electricity consumption of the charging station are determined based on the charging station data and the distribution map of charging demand. Electricity is stored during the valley period and discharged during the peak period. After integration, a storage planning scheme is formed.

5. The voltage transformation and regulation method of a pre-installed charging station with integrated charging and discharging according to claim 1 is characterized in that: The method for setting up the power storage planning scheme is as follows: Set the power analysis curve according to the charging demand distribution curve; Obtain the power supply price curve and the power storage price curve of the charging station, set the price difference curve according to the power supply price curve and the power storage price curve of the charging station, divide each allowed charging segment in the power analysis curve according to the price difference curve, and obtain a number of unit segments; set a corresponding priority for each unit segment in order from large to small price difference; mark the unit attributes of each unit segment, and the unit attributes include price difference, priority and maximum unit charging capacity; A power storage planning model is established according to the properties of each unit and the power analysis curve; the current remaining power storage capacity of the power storage module is obtained in real time; the remaining power storage capacity obtained is analyzed through the power storage planning model to obtain the corresponding power storage planning solution.

6. The voltage transformation and regulation method of a pre-installed charging station with integrated charging and discharging according to claim 5 is characterized in that: The setting methods of the power analysis curve include: Marking the corresponding allowed charging period in the charging demand distribution curve, wherein the allowed charging period includes a plurality of allowed charging segments; identifying the corresponding transmission segments according to the allowed power supply period, determining the minimum reserve power corresponding to the power storage module according to the charging demand distribution curve corresponding to each transmission segment, and marking the obtained minimum reserve power corresponding to each transmission segment in the charging demand distribution curve; Determine the maximum charge capacity of the power storage module in each allowed charging section, and mark the obtained maximum charge capacity in the charging demand distribution curve; The corresponding minimum reserve power is adjusted according to each maximum charge capacity, and each adjusted minimum storage power is marked as a limited power; the current charging demand distribution curve is marked as a power analysis curve.

7. The voltage transformation and regulation method of a pre-installed charging station with integrated charging and discharging according to claim 6 is characterized in that: The method for establishing the power storage planning model includes: Step S31: sorting the units according to their priorities, identifying the current remaining storage capacity of the power storage module in real time, and marking the remaining storage capacity in the power analysis curve accordingly; Step S32: charging is performed according to the maximum unit charge amount corresponding to the unit attribute of the corresponding unit segment in the priority sorting, and the cycle is repeated N times, where N is a positive integer; According to the cell attributes of the corresponding cell segment in the priority sorting, charging is performed one by one according to the sorting. When the first-ranked cell is charged, the second-ranked cell is charged next time, and so on. Step S33: determine whether the power analysis curve meets the requirements; if it meets the requirements, go to step S34, otherwise, return to step S32; Step S34: Identify the charge capacity corresponding to each unit segment and mark it as the target charge capacity; Step S35: Establishing an electricity storage planning model according to the electricity storage planning method of steps S31 to S34.

8. A voltage conversion and regulation system for a pre-installed charging station with integrated charging, characterized in that: A method for voltage transformation and regulation of a pre-installed integrated charging station according to any one of claims 1 to 7, comprising a voltage transformation and rectification module, a charging module, a power storage module and a power storage analysis module; Connect the input end of the transformer and rectifier module to the power grid; connect the input end of the charging module to the output end of the transformer and rectifier module; connect the power storage module to the input end of the charging module; The electricity analysis module is used to perform electricity storage analysis and management on the electricity storage module.

9. A voltage transformer and regulator for a pre-installed charging station with integrated charging, characterized in that: include: Memory for storing computer programs; A processor, used to implement the steps of the voltage transformation and regulation method of a preinstalled integrated charging station as described in any one of claims 1 to 7 when executing a computer program.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by the processor, the steps of the voltage transformation and regulation method of a preinstalled integrated charging station as described in any one of claims 1 to 7 are implemented.

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