Intelligent line integrated management system based on intelligent analysis

Abstract

The invention discloses an intelligent circuit integrated management system based on intelligent analysis, energy storage equipment is configured in a station building jurisdiction, the low-voltage end of a distribution transformer is connected with the charging end of an energy storage device, an intelligent charging pile and an intelligent electric meter through different circuits, and the discharging end of the energy storage device is connected with the intelligent charging pile at the same time; a charging plan of the intelligent charging pile is divided into a necessary charging plan and a remaining charging plan, and an energy storage device is selected to be used immediately to supply power to the intelligent charging pile or a power grid is used for charging in a delayed mode according to the emergency degree of the necessary charging plan; meanwhile, according to a station building power distribution plan issued by a power grid, the starting time of the necessary charging plan is adjusted, whether the energy storage equipment is charged or not is determined, and whether the remaining charging plan is implemented or not is determined. According to the invention, fine management of small-range jurisdictions is carried out by taking the station building nodes as the core, so that the pertinence and efficiency of power line management are improved; by reasonably dividing the charging plan of the intelligent charging pile, the flexible adjustment of the charging time is realized, the peak load shifting of the load is effectively carried out, and the distribution of electric power resources is optimized; by utilizing the energy storage equipment, the influence on the stability of the whole power grid is reduced on the premise of meeting the charging plan as much as possible, and the reliability of the power system is improved.

Description

Technical Field

[0001] The present invention relates to a smart integrated line management system based on intelligent analysis, and in particular to a line management technology with a station house node as the core in a power system. Background Art

[0002] In modern society, the scale and complexity of various lines (such as power lines, communication lines, etc.) are constantly increasing. Traditional line management methods face many challenges, such as low fault detection efficiency, high maintenance costs, and difficulty in predicting potential problems in advance. Therefore, a more intelligent, efficient and comprehensive line management system is needed.

[0003] With the growth of electricity demand and changes in energy structure, efficient and intelligent management of power lines with station nodes as the key link has become an important requirement for the development of power systems. Traditional line management methods have certain limitations in dealing with complex load changes at station nodes, optimizing energy distribution at station nodes, and ensuring stable operation of station nodes and surrounding lines.

[0004] With the growth of electricity demand and changes in energy structure, efficient and intelligent management of power lines with station nodes as the key link has become an important requirement for the development of power systems. Traditional line management methods have certain limitations in dealing with complex load changes at station nodes, optimizing energy distribution at station nodes, and ensuring stable operation of station nodes and surrounding lines. Summary of the invention

[0005] Purpose of the invention: In order to overcome the shortcomings of the prior art, the present invention provides a smart line integrated management system based on intelligent analysis, which uses the station building node as the core to collect information and manage power distribution in a small area. At the same time, it uses energy storage equipment to adjust the charging time of smart charging piles to achieve peak shaving and valley filling of line loads.

[0006] Technical solution: To achieve the above purpose, the technical solution adopted by the present invention is:

[0007] An intelligent line integrated management system based on intelligent analysis is provided. Energy storage equipment is configured within the jurisdiction of a station building. The low-voltage end of the distribution transformer is connected to the charging end of the energy storage device, the smart charging pile and the smart meter through different lines, and the discharge end of the energy storage device is connected to the smart charging pile at the same time. The charging plan of the smart charging pile is divided into a necessary charging plan and a remaining charging plan. According to the urgency of the necessary charging plan, the energy storage device is immediately used to supply power to the smart charging pile, or the grid is used for delayed charging (powered by the low-voltage end of the distribution transformer). At the same time, according to the station building distribution plan issued by the power grid, the start time of the necessary charging plan is adjusted to determine whether to charge the energy storage device and whether to implement the remaining charging plan.

[0008] In this case, energy storage equipment is added to the nodes of the station house, and energy storage equipment is used in the station house area to manage peak shaving and valley filling, so that the station house nodes can distribute power in the area as much as possible according to the station house power distribution plan issued by the power grid, reducing the impact on the stability of the entire power grid. It should be noted that the specific charging method of the charging pile, the charge amount of the energy storage equipment and other information can be uploaded as needed. On the basis of sufficient computing power of the upper system, it may help the upper system to optimize the power grid load more appropriately. However, in this case, the focus is on the effective implementation of the power distribution plan of the station house; at the same time, this case splits the charging plan of the smart charging pile into two parts for a larger adjustable space. In order to encourage users to participate in the optimization of power grid load scheduling, differential electricity prices can be used for incentives; in addition, in order to simplify management, avoid the complexity of user use and the difficulty of management, and reduce the damage that multiple segmented charging may cause to electric vehicles, the charging plan is only split into two parts, and the necessary charging plan is designed as continuous charging, and the remaining charging plan is also continuous charging.

[0009] Specifically, the intelligent line integrated management system based on intelligent analysis includes a station integrated management platform, distribution transformers and energy storage equipment. The high-voltage end of the distribution transformer is connected to the power grid, and the low-voltage end of the distribution transformer and the discharge end of the energy storage equipment are connected to the smart charging pile through a dedicated charging pile line. The low-voltage end of the distribution transformer is connected to the smart meter through a dedicated household line. The low-voltage end of the distribution transformer is also connected to the charging end of the energy storage equipment. The energy storage equipment is equipped with an energy storage management device.

[0010] The intelligent charging pile is used to collect the state of charge, charging plan and load response of the electric vehicle, and perform abnormal monitoring, send the load response to the historical load collection module, and send the charging plan to the charging pile intelligent distribution module; the charging plan includes the charging power, the maximum charge requirement, the minimum charge requirement and the latest charging completion time, and also includes the charging completion time to reach the minimum charge requirement and the charging completion time to reach the maximum charge requirement calculated in combination with the state of charge and the charging power;

[0011] The smart meter is used to collect load response and perform abnormal monitoring, and send the load response to the historical load collection module;

[0012] The energy storage management device is used to collect the charge status of the energy storage device and perform abnormal monitoring, and send the charge status to the charging pile intelligent distribution module;

[0013] The station building integrated management platform includes a historical load collection module, a charging pile load prediction module, a household load prediction module and a charging pile intelligent distribution module; the historical load collection module receives and stores the load responses sent by the intelligent charging piles and the intelligent meters in real time; the charging pile load prediction module predicts the charging pile load in different time periods according to the historical load responses; the household load prediction module predicts the household load in different time periods according to the historical load responses; the charging pile intelligent distribution module uploads the charging pile load prediction value and the household load prediction value, accepts the station building load plan issued, and adjusts the start charging time of the intelligent charging pile according to the station building load plan, the household load prediction value and the charging plan, and determines whether the energy storage device in the next time period is in the charging state or the discharging state, so that the load on the low-voltage end of the distribution transformer in the next time period tends to the station building load plan.

[0014] In the design of this case, different lines are used to transmit household loads and charging pile loads. On the one hand, the difference in electricity consumption between the two is taken into account, and on the other hand, the mutual influence of electricity consumption is avoided. In this case, smart charging piles, smart meters, and energy storage devices belong to hardware configuration, and energy storage management devices and station building integrated management platforms belong to software configuration or a combination of software and hardware configuration. The station building integrated management platform performs calculations, uploads, receives, and processes based on the information collected by the collection equipment to realize the charging management of smart charging piles and the charging and discharging management of energy storage devices.

[0015] Specifically, the smart charging pile sends the charging plan to the charging pile smart distribution module, and the charging pile smart distribution module divides the charging plan into two parts: a necessary charging plan and a remaining charging plan. The necessary charging plan is used to complete the minimum charging requirement, and the remaining charging plan is used to complete the remaining charging requirement. The remaining charging plan is implemented after the necessary charging plan is completed. For a certain smart charging pile, if in the current time period, the charging pile smart distribution module determines that the implementation of the necessary charging plan at the beginning of the next time period cannot reach the minimum charging requirement at the latest charging completion time, then the charging pile smart distribution module sends a power supply instruction to the energy storage module, and the smart charging pile implements the necessary charging plan by charging the energy storage device. For a certain smart charging pile, if in the current time period, the charging pile smart distribution module determines that the implementation of the necessary charging plan at the beginning of the next time period can reach the minimum charging requirement at the latest charging completion time, then the charging pile smart distribution module preliminarily determines the necessary charging plan as the necessary charging plan to be implemented in the next time period.

[0016] In this case, those that need to be charged immediately will be charged using energy storage equipment, while those with less urgent charging needs will be scheduled to start charging in the next period of the current period, so as to achieve advance planning of the load and reduce the impact of temporarily added load demand on the implementation of the load plan; and for the supplementary charging plan, since it is set to a non-emergency state at the beginning of the design, it can be planned in advance.

[0017] Specifically, the management process of the station building integrated management platform includes the following steps:

[0018] Step 1. The smart charging pile sends the collected load response to the historical load collection module and stores it as the historical load response data of the charging pile. The charging pile load prediction module predicts the charging pile load of all smart charging piles in different time periods according to the historical load response data. The load response uploaded by the smart charging pile is the sum of the load response of the smart charging pile to the energy storage device and the load response of the smart charging pile to the power grid.

[0019] Charging pile load prediction value:

[0020] Where: i ≥ 1, Indicates the predicted value of the charging pile load in the period t+i;

[0021] Step 2: The smart meter sends the collected load response to the historical load collection module, which is stored as the historical load response data of the dedicated household supply line. The household load prediction module predicts the household load of all smart meters by time period according to the historical load response data.

[0022] Household load forecast value:

[0023] in: It represents the predicted value of household load in the period t+i;

[0024] Step 3, the charging pile intelligent power distribution module uploads the charging pile load forecast value and the household load forecast value, and accepts the station load plan issued;

[0025] Station load plan:

[0026] in: It represents the station load plan for the period t+i;

[0027] Step 4: Collect the charging plans of each smart charging pile in real time, count the necessary charging plans and remaining charging plans that will continue to be implemented in the next period, and preliminarily determine the necessary charging plans to be implemented in the next period. Sum the statistical charge demands to obtain the load demand Q of the smart charging piles on the power grid in the next period. totle (t+1);

[0028] Step 5. If All necessary charging plans that are initially determined to be implemented in the next period are taken as new necessary charging plans, and the necessary charging plans and remaining charging plans that have already been implemented are continued in the next period. At the same time, all new necessary charging plans and new remaining charging plans are implemented at the beginning of the next period; α is a set value less than or equal to 1;

[0029] If the charge of the energy storage device is less than the specified percentage β, the energy storage device is set to a charging state in the next period, and β is a set value less than or equal to 1;

[0030] Alternatively, if the charge of the energy storage device is greater than or equal to the specified value β, then one of the remaining charging plans that have not been implemented is selected one by one according to the time priority as the new remaining charging plan, and the charge demand of the new remaining charging plan is added to the load demand Q totle (t+1), return to Step 5;

[0031] Alternatively, if the charge of the energy storage device is not fully charged and there is no remaining charging plan that has not been implemented, the energy storage device is set to a charging state in the next period;

[0032] Step 6. If Then, the necessary charging plans with the lowest urgency are eliminated one by one from the necessary charging plans that are initially determined to be implemented in the next period, and the process returns to Step 5.

[0033] The basic principle of the design of this case is that if immediate charging is required, energy storage equipment should be used for immediate charging, so as to avoid the immediate charging plan affecting the pre-planned grid load plan as much as possible; when designing the grid load plan, the necessary charging plan should be arranged and implemented as soon as possible. If the implementation of all necessary charging plans exceeds the grid load plan, the least urgent necessary charging plan should be deleted first and arranged in the next period for further judgment; when all charging plans are met, priority should be given to charging energy storage equipment, and then the implementation of the remaining charging plans should be considered. In this case, the remaining charging plans are implemented in chronological order. The design of this case is first to ensure that the necessary charging plan can be completed. Considering the possible changes in the charging plan, we need to complete the necessary charging plan as soon as possible to reduce the impact that load scheduling may have on users. In fact, when designing the specific charging scheduling arrangement, other solutions can also be designed, such as phased consideration of energy storage equipment, and different levels of urgency corresponding to different charging conditions.

[0034] Specifically, in Step 6, the urgency of the necessary charging plan is determined based on the adjustable time length. The larger the adjustable time length, the lower the urgency. The adjustable time length means: for a certain smart charging pile, the time difference between the current time and the latest charging completion time is used as the charging time length, and the difference between the charging time length and the charging completion time to reach the minimum charge requirement is calculated. The difference is the adjustable time length of the smart charging pile. This is a method for judging the urgency given in this case, and other criteria can also be designed as needed.

[0035] Specifically, in Step 6, the eliminated necessary charging plan is preliminarily determined as the necessary charging plan to be implemented in the next period. It should be emphasized here that the charging plan for the next period is planned in the current period. When the necessary charging plan is eliminated from the next period, it will become the planning object of the next period. It is first pre-determined as the necessary charging plan to be implemented in the next period. As for whether it can be implemented in the next period, it still needs to be judged by the planning of the next period.

[0036] Specifically, the smart charging pile sends the load response to the historical collection module, the historical load collection module receives and stores the load response sent by the smart charging pile in real time, and the charging pile load prediction module predicts the charging pile load by time period based on the historical load response data. The load response here includes the load response of the smart charging pile to the energy storage device and the load response of the smart charging pile to the power grid. It should be emphasized here that since the energy storage device is stored during the implementation of the station load plan, it is the load dispatch within the station area, and the total load demand within the station area has not changed. Therefore, when reporting the load response of the smart charging pile, it is necessary to take into account the load response of the smart charging pile to the power grid and the load response of the energy storage device, and not just part of them.

[0037] Beneficial effects: The intelligent line integrated management system based on intelligent analysis provided by the present invention has the following advantages over the prior art: 1. Refined management of a small area with the station building node as the core improves the pertinence and efficiency of power line management, while facilitating access to the power grid; 2. By reasonably dividing the charging plan of the smart charging piles, flexible adjustment of the charging time is achieved, the load is effectively shaving peaks and filling valleys, and the allocation of power resources is optimized; 3. By utilizing energy storage equipment, while meeting the charging plan as much as possible, the impact on the stability of the entire power grid is reduced, and the reliability of the power system is improved; 4. Different lines are used for household loads and charging pile loads to avoid mutual influence and ensure the stability and safety of electricity use. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1It is a structural block diagram of the intelligent line integrated management system of the present invention;

[0039] Figure 2 This is the structural diagram of the station building comprehensive management platform;

[0040] Figure 3 It is an implementation flow chart of the present invention. DETAILED DESCRIPTION

[0041] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0042] An intelligent line integrated management system based on intelligent analysis, which configures energy storage equipment within the jurisdiction of the station building. The low-voltage end of the distribution transformer is connected to the charging end of the energy storage device, the smart charging pile and the smart meter through different lines, and the discharge end of the energy storage device is connected to the smart charging pile at the same time. The charging plan of the smart charging pile is divided into two parts: the necessary charging plan and the remaining charging plan. According to the urgency of the necessary charging plan, it is selected to immediately use the energy storage device to supply power to the smart charging pile, or to delay the use of the power grid for charging. At the same time, according to the station distribution plan issued by the power grid, the start time of the necessary charging plan is adjusted to determine whether to charge the energy storage device and whether to implement the remaining charging plan. Figure 1 As shown, the smart line integrated management system includes a station building integrated management platform, distribution transformers, energy storage equipment and sensor equipment. The high-voltage end of the distribution transformer is connected to the power grid, and the low-voltage end of the distribution transformer and the discharge end of the energy storage equipment are connected to the smart charging pile through a dedicated charging pile line. The low-voltage end of the distribution transformer is connected to the smart meter through a dedicated household line. The low-voltage end of the distribution transformer is also connected to the charging end of the energy storage equipment. The energy storage equipment is equipped with an energy storage management device, and the sensor equipment monitors the station building and the equipment inside the station building for abnormalities.

[0043] The smart charging pile is used to collect the state of charge, charging plan and load response of the electric vehicle, and perform abnormal monitoring, send the load response to the historical load collection module, send the charging plan to the charging pile intelligent power distribution module, and send the abnormal monitoring result to the abnormal analysis module; for the jth smart charging pile, the charging plan includes the charging power, the maximum charge requirement Minimum charge requirement and the latest charging completion time, as well as the charging completion time to reach the minimum charging requirement calculated by combining the state of charge and charging power and the time it takes to complete the charging process to reach the maximum charge requirement

[0044] The smart meter is used to collect load response and perform abnormality monitoring, send the load response to the historical load collection module, and send the abnormality monitoring result to the abnormality analysis module.

[0045] The energy storage management device is used to collect the charge state of the energy storage device and perform abnormality monitoring, send the charge state to the charging pile intelligent distribution module, and send the abnormality monitoring result to the abnormality analysis module.

[0046] like Figure 2 As shown, the station building integrated management platform includes a historical load acquisition module, a charging pile load prediction module, a household load prediction module, a charging pile intelligent power distribution module and an abnormal analysis module. The historical load acquisition module receives and stores the load response sent by the intelligent charging pile and the intelligent meter in real time; the charging pile load prediction module predicts the charging pile load in different time periods according to the historical load response; the household load prediction module predicts the household load in different time periods according to the historical load response; the charging pile intelligent power distribution module uploads the charging pile load prediction value and the household load prediction value, accepts the station building load plan issued, and adjusts the start charging time of the intelligent charging pile according to the station building load plan, the household load prediction value and the charging plan, determines whether the energy storage device in the next time period is in the charging state or the discharging state, so that the load at the low-voltage end of the distribution transformer in the next time period tends to the station building load plan; the abnormal analysis module performs abnormal analysis according to the abnormal monitoring results of the sensor equipment and the received abnormal monitoring results, and reports the abnormal analysis results and the location of the abnormal occurrence.

[0047] like Figure 3 The figure shows the management process of the station building integrated management platform. The present invention will be further explained below in conjunction with specific implementation steps.

[0048] Step 1: Charging pile load response data collection and prediction

[0049] The smart charging pile sends the collected load response to the historical load collection module and stores it as the historical load response data of the charging pile. The charging pile load prediction module predicts the charging pile load for all smart charging piles in different time periods based on the historical load response data. It should be noted that the load response uploaded by the smart charging pile is the sum of the load response of the smart charging pile to the energy storage device and the load response of the smart charging pile to the power grid, that is, the load response uploaded by the smart charging pile does not distinguish between sources.

[0050] Charging pile load prediction value:

[0051] Where: i ≥ 1, Represents the predicted value of the charging pile load in the t+i period.

[0052] Step 2: Household load response data collection and prediction

[0053] The smart meter sends the collected load response to the historical load collection module, which is stored as the historical load response data of the dedicated household supply line. The household load prediction module predicts the household load for all smart meters in different time periods based on the historical load response data.

[0054] Household load forecast value:

[0055] in: It represents the predicted value of household load in the period t+i;

[0056] Step 3: Upload load forecast and receive station load plan

[0057] In this case, the station house only makes load forecasts based on historical load responses and provides data for the load dispatch of the power grid, which does not directly affect the load dispatch plan of the power grid. After receiving the historical load response, the power grid will make an overall plan based on the dispatch method, and then issue the dispatch plan layer by layer. The station house will eventually receive the station house load plan. At this time, the effective way for the station house to cooperate with the power grid dispatch is to implement it as much as possible according to the issued station house load plan. It should be pointed out that although the station house is designed with energy storage equipment, the total load response of the station house to the power grid has not changed. The energy storage equipment is equivalent to a reservoir, and the power supply time of the smart charging pile with low timeliness requirements is adjusted; however, the household power supply is not adjusted, so it will not affect the user's living electricity consumption at all. The charging pile intelligent distribution module uploads the charging pile load forecast value and the household load forecast value, and accepts the issued station house load plan.

[0058] Station load plan:

[0059] in: It represents the station load plan for the period t+i;

[0060] Step 4: Collect charging plans of each smart charging pile in real time

[0061] The smart charging pile sends the charging plan to the charging pile intelligent power distribution module, which collects the charging plans of each smart charging pile in real time and divides the charging plan into two parts: the necessary charging plan and the remaining charging plan. For the jth smart charging pile, the necessary charging plan is used to complete the minimum charging requirement. The remaining charging plan is used to complete the remaining charging needs The remaining charging plan is implemented after the necessary charging plan is completed.

[0062] For a certain smart charging pile, if in the current period, the charging pile intelligent distribution module determines that the necessary charging plan cannot be implemented at the latest charging completion time to reach the minimum charge requirement The intelligent power distribution module of the charging pile sends a power supply instruction to the energy storage module. The intelligent charging pile adopts the energy storage device charging method to implement the necessary charging plan. The necessary charging plan is not counted in the subsequent charging plan. However, after the implementation of the necessary charging plan is completed, the remaining charging plans still need to be counted.

[0063] For a certain smart charging pile, if in the current period, the charging pile intelligent power distribution module determines that the necessary charging plan can be implemented at the beginning of the next period to reach the minimum charge requirement at the latest charging completion time. The intelligent power distribution module of the charging pile preliminarily determines the necessary charging plan as the necessary charging plan to be implemented in the next period, and counts the necessary charging plan and the remaining charging plans in the subsequent charging plan.

[0064] The intelligent power distribution module of the charging pile counts the necessary charging plans and remaining charging plans that will continue to be implemented in the next period in real time or at a fixed time in each period, and preliminarily determines the necessary charging plans to be implemented in the next period, and sums up the statistical charge demands to obtain the load demand Q of the intelligent charging pile on the power grid in the next period. totle (t+1).

[0065] Step 5: The station load plan can meet the load demand of the power grid. totle Charging plan for (t+1)

[0066] like It is considered that the station load plan for the next period can meet all necessary charging plans. First, all necessary charging plans that are preliminarily determined to be implemented in the next period are taken as new necessary charging plans, and the necessary charging plans and remaining charging plans that have already started are continued in the next period. At the same time, all new necessary charging plans and new remaining charging plans are implemented at the beginning of the next period. Here α is a set value less than or equal to 1, and a simpler model is to set α=1.

[0067] After all necessary charging plans are arranged, it is necessary to determine the margin of the station load plan. If the margin is large enough and the energy storage equipment needs to be charged, the energy storage equipment should be charged first; otherwise, the remaining charging plans should be arranged according to the priority order. This case is designed as follows:

[0068] If the charge of the energy storage device is less than the specified percentage β, the energy storage device is set to a charging state in the next period, and β is a set value less than or equal to 1. For example, when the charge of the energy storage device is less than 60%, charging of the energy storage device is given priority, and β is set to 60%, which is 0.6.

[0069] Alternatively, if the charge of the energy storage device is greater than or equal to the specified value β, then one of the remaining charging plans that have not been implemented is selected one by one according to the time priority as the new remaining charging plan, and the charge demand of the new remaining charging plan is added to the load demand Q totle (t+1), and re-judge whether If the conditions are met, it means that the selected remaining charging plan can be implemented in the next period, and you can select another remaining charging plan for evaluation; if the conditions are not met, it means that the selected remaining charging plan cannot be implemented in the next period, and you do not need to continue to select other remaining charging plans.

[0070] Alternatively, if the charge of the energy storage device is not fully charged and there is no remaining charging plan that has not been implemented, the energy storage device is set to a charging state in the next time period.

[0071] Step 6: The station load plan cannot meet the load demand of the power grid. totle Charging plan for (t+1)

[0072] like It is considered that the station load plan for the next period cannot meet all the necessary charging plans, and it is necessary to design rules to delete one or more necessary charging plans with the lowest priority. The deleted necessary charging plans will be preliminarily determined as the necessary charging plans to be implemented in the next period, and then counted again in the next period; this case determines the priority according to the degree of urgency; the urgency of the necessary charging plan is determined according to the adjustable time length, the larger the adjustable time length, the lower the urgency; the adjustable time length refers to: for a certain smart charging pile, the time difference between the current time and the latest charging completion time is taken as the charging time length, and the difference between the charging time length and the charging completion time to reach the minimum charge requirement is calculated, and the difference is the adjustable time length of the smart charging pile.

[0073] In this case, the method of deleting one by one is adopted to eliminate the necessary charging plans with the lowest priority first, and then judge again Until it is met; it should be noted that after the necessary charging plan is eliminated, generally speaking, the remaining charging plan will no longer be arranged, and the energy storage equipment will not be charged.

[0074] Step 7: Implementation of charging plan

[0075] In the current period, the necessary charging plan, remaining charging plan or energy storage equipment charging plan are implemented according to the charging plan of the previous period; if there is a new charging plan in the current period, first determine whether it is necessary to use energy storage equipment immediately to implement the necessary charging plan, otherwise, they will be included in the statistics of this period and arranged to be implemented in the next period or later.

[0076] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the above embodiments do not limit the present invention in any form, and any technical solution obtained by equivalent replacement or equivalent transformation falls within the protection scope of the present invention.

Claims

1. A smart line integrated management system based on intelligent analysis, characterized by: Energy storage equipment is configured within the jurisdiction of the station building. The low-voltage end of the distribution transformer is connected to the charging end of the energy storage device, the smart charging pile and the smart meter through different lines. The discharge end of the energy storage device is connected to the smart charging pile at the same time. The charging plan of the smart charging pile is divided into two parts: the necessary charging plan and the remaining charging plan. According to the urgency of the necessary charging plan, the energy storage device is used to supply power to the smart charging pile immediately, or the grid is used for delayed charging. At the same time, according to the station distribution plan issued by the power grid, the start time of the necessary charging plan is adjusted to determine whether to charge the energy storage equipment and whether to implement the remaining charging plan.

2. The intelligent line integrated management system based on intelligent analysis according to claim 1 is characterized by: It includes a station building integrated management platform, distribution transformers and energy storage equipment. The high-voltage end of the distribution transformer is connected to the power grid, the low-voltage end of the distribution transformer and the discharge end of the energy storage equipment are connected to the smart charging pile through a dedicated charging pile line, the low-voltage end of the distribution transformer is connected to the smart meter through a dedicated household line, and the low-voltage end of the distribution transformer is also connected to the charging end of the energy storage equipment. The energy storage equipment is equipped with an energy storage management device; The intelligent charging pile is used to collect the state of charge, charging plan and load response of the electric vehicle, and perform abnormal monitoring, send the load response to the historical load collection module, and send the charging plan to the charging pile intelligent distribution module; the charging plan includes the charging power, the maximum charge requirement, the minimum charge requirement and the latest charging completion time, and also includes the charging completion time to reach the minimum charge requirement and the charging completion time to reach the maximum charge requirement calculated in combination with the state of charge and the charging power; The smart meter is used to collect load response and perform abnormal monitoring, and send the load response to the historical load collection module; The energy storage management device is used to collect the charge status of the energy storage device and perform abnormal monitoring, and send the charge status to the charging pile intelligent distribution module; The station building integrated management platform includes a historical load collection module, a charging pile load prediction module, a household load prediction module and a charging pile intelligent power distribution module; the historical load collection module receives and stores the load responses sent by the intelligent charging pile and the intelligent meter in real time; the charging pile load prediction module predicts the charging pile load by time period according to the historical load response; The household load prediction module predicts household load by time period according to historical load response; The charging pile intelligent distribution module uploads the charging pile load prediction value and the household load prediction value, accepts the station load plan issued, adjusts the start charging time of the intelligent charging pile according to the station load plan, the household load prediction value and the charging plan, and determines whether the energy storage device is in the charging state or the discharging state in the next time period, so that the load on the low-voltage end of the distribution transformer in the next time period tends to the station load plan.

3. The intelligent line integrated management system based on intelligent analysis according to claim 2 is characterized by: The smart charging pile sends the charging plan to the charging pile smart power distribution module, and the charging pile smart power distribution module divides the charging plan into two parts: a necessary charging plan and a remaining charging plan. The necessary charging plan is used to complete the minimum charging demand, and the remaining charging plan is used to complete the remaining charging demand. The remaining charging plan is implemented after the necessary charging plan is completed; For a certain smart charging pile, if in the current period, the smart power distribution module of the charging pile determines that the implementation of the necessary charging plan at the beginning of the next period cannot reach the minimum charge demand at the latest charging completion time, then the smart power distribution module of the charging pile sends a power supply instruction to the energy storage module, and the smart charging pile adopts the energy storage device charging method to implement the necessary charging plan; For a certain smart charging pile, if in the current time period, the charging pile intelligent distribution module determines that the implementation of the necessary charging plan at the beginning of the next time period can reach the minimum charge requirement at the latest charging completion time, then the charging pile intelligent distribution module will initially determine the necessary charging plan as the necessary charging plan to be implemented in the next time period.

4. The intelligent line integrated management system based on intelligent analysis according to claim 3 is characterized by: The management process of the station building integrated management platform includes the following steps: Step 1. The smart charging pile sends the collected load response to the historical load collection module and stores it as the historical load response data of the charging pile. The charging pile load prediction module predicts the charging pile load of all smart charging piles in different time periods according to the historical load response data. The load response uploaded by the smart charging pile is the sum of the load response of the smart charging pile to the energy storage device and the load response of the smart charging pile to the power grid. Charging pile load prediction value: Where: i ≥ 1, Indicates the predicted value of charging pile load in the period t+i; Step 2: The smart meter sends the collected load response to the historical load collection module, which is stored as the historical load response data of the dedicated household supply line. The household load prediction module predicts the household load of all smart meters by time period according to the historical load response data. Household load forecast value: in: It represents the predicted value of household load in the period t+i; Step 3, the charging pile intelligent power distribution module uploads the charging pile load forecast value and the household load forecast value, and accepts the station load plan issued; Station load plan: in: It represents the station load plan for the period t+i; Step 4: Collect the charging plans of each smart charging pile in real time, count the necessary charging plans and remaining charging plans that will continue to be implemented in the next period, and preliminarily determine the necessary charging plans to be implemented in the next period. Sum the statistical charge demands to obtain the load demand Q of the smart charging piles on the power grid in the next period. totle (t+1); Step 5. If All necessary charging plans that are initially determined to be implemented in the next period are taken as new necessary charging plans, and the necessary charging plans and remaining charging plans that have already been implemented are continued in the next period. At the same time, all new necessary charging plans and new remaining charging plans are implemented at the beginning of the next period; α is a set value less than or equal to 1; If the charge of the energy storage device is less than the specified percentage β, the energy storage device is set to a charging state in the next period, and β is a set value less than or equal to 1; Alternatively, if the charge of the energy storage device is greater than or equal to the specified value β, then one of the remaining charging plans that have not been implemented is selected one by one according to the time priority as the new remaining charging plan, and the charge demand of the new remaining charging plan is added to the load demand Q totle (t+1), return to Step 5; Alternatively, if the charge of the energy storage device is not fully charged and there is no remaining charging plan that has not been implemented, the energy storage device is set to a charging state in the next period; Step 6. If Then, the necessary charging plans with the lowest urgency are eliminated one by one from the necessary charging plans that are initially determined to be implemented in the next period, and the process returns to Step 5.

5. The intelligent line integrated management system based on intelligent analysis according to claim 4 is characterized by: In the Step 6, the urgency of the necessary charging plan is determined according to the adjustable time length. The larger the adjustable time length, the lower the urgency. The adjustable time length means: for a certain smart charging pile, the time difference between the current time and the latest charging completion time is taken as the charging time length, and the difference between the charging time length and the charging completion time to reach the minimum charge requirement is calculated, and the obtained difference is the adjustable time length of the smart charging pile.

6. The intelligent line integrated management system based on intelligent analysis according to claim 4 is characterized by: In the Step 6, the eliminated necessary charging plans are preliminarily determined as the necessary charging plans to be implemented in the next period.

7. The intelligent line integrated management system based on intelligent analysis according to claim 2 is characterized by: The smart charging pile sends the load response to the history collection module, the history load collection module receives and stores the load response sent by the smart charging pile in real time, and the charging pile load prediction module predicts the charging pile load in different time periods according to the historical load response data. The load response here includes the load response of the smart charging pile to the energy storage device and the load response of the smart charging pile to the power grid.

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