CN117374970B - Charging pile charging load balance scheduling method - Google Patents
Charging pile charging load balance scheduling method Download PDFInfo
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Abstract
The application provides a charging pile charging load balance scheduling method, which comprises the following steps: a charging pile terminal subsystem initiates a charging request; and the dispatching center subsystem judges whether the charging request of the new charging pile terminal can be born according to the current load power of the administered area, if so, the charging service is carried out according to the nominal voltage value and the current value of the new charging pile terminal, and if not, the charging configuration parameters of each charging pile terminal in the administered area are adjusted according to the load balancing principle, and then the charging service is carried out on the automobile. According to the application, the budget load power in the jurisdiction is taken as constraint, and the charging configuration parameters of the charging pile terminal are dynamically scheduled and updated based on event triggering by a scheduling strategy of a remaining time fairness principle, a new priority guarantee principle and a saturation yielding principle, so that the purpose of maximum intelligent use of the budget load power is realized on the premise of not overloading electric energy.
Description
Technical Field
The application relates to the technical field of charging control of charging piles, in particular to a charging pile charging load balance scheduling method.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
In recent years, with the rapid development of industry and informatization industry, the intelligent transformation of the aspects of social life operation is rapidly advanced, the reference rate of electric equipment operation or auxiliary operation is increased year by year, the requirements of various layers of society on power supply are becoming larger and larger, great challenges are brought to power supply, and meanwhile, with the rapid popularization of new energy automobiles and the problem of instantaneous load increase of automobiles brought by the arrival of automobile rapid charging technology, further tests are brought to power supply.
At present, as the permeability of an electric energy automobile is further improved, the situation that the instantaneous power is too large to influence the normal supply of electric power and even cause the problem of power supply safety is frequently and frequently seen, so that the problem of load balance control is widely focused in the industry, then, the prior art is more in consideration of how to accurately or finely predict the load for load balance control, then, load balance control is realized based on allowance distribution, so that the actual application does not exceed the distributed limit, and the purpose of power utilization safety is realized, the situation is not in mind for dealing with the trend of rapid development of new energy, because the electric energy consumption is rapidly increased in the present day of rapid development of new energy, various rapid charging technologies are needed to lead the instantaneous load to be increased, the distribution limit is increased, load balance scheduling is not performed, and the problem that the charging operation configuration mode of an automobile charging pile cannot be effectively controlled for most areas in the future of new energy is solved.
Disclosure of Invention
In order to solve the problems, the application provides a charging pile charging load balance scheduling method, which takes a jurisdiction budget load power value P_bridge as a constraint, and dynamically schedules and updates charging configuration parameters of a charging pile terminal based on event triggering by a remaining time fairness principle, a new priority guarantee principle and a saturated back-off principle scheduling strategy, so that the purpose of maximum intelligent use of the budget load power is realized on the premise of not overloading electric energy.
The application provides a charging pile charging load balance dispatching method, which is based on a charging pile charging load balance dispatching system consisting of a charging pile terminal subsystem and a dispatching center subsystem, and comprises the following specific steps:
Step 1, a charging pile terminal subsystem initiates a charging request, wherein the charging request at least comprises kilowatt-hour, a nominal voltage value and a nominal current value required by full charge of a charging pile terminal;
And 2, judging whether the charging request of the new charging pile terminal can be born according to the current load power of the administered area by the dispatching center subsystem, if so, carrying out charging service according to the nominal voltage value and the current value of the new charging pile terminal, and if not, adjusting the charging configuration parameters of each charging pile terminal in the administered area according to the load balancing principle and then carrying out charging service on the automobile.
Preferably, in the step1, the information of kilowatt-hours, nominal voltage value and nominal current value required by full charge of the charging pile terminal is obtained by reading the information of the battery management system of the automobile connected to the charging pile by the charging pile terminal.
Preferably, in the step 2, the scheduling center subsystem determines whether the charging request of the new charging pile terminal can be born according to the current load power p_current of the administered area, which is as follows:
And the dispatching center subsystem calculates U_request I_request to obtain rated power P_request according to the nominal voltage U_request and the nominal current I_request of the charging pile terminal requesting charging, then judges whether (P_current+P_request) is smaller than or equal to the jurisdiction budget load power value P_bridge, and if so, judges that the charging request of the new charging pile terminal can be born.
Preferably, in the step 2, after adjusting the charging configuration parameters of each charging pile in the jurisdiction according to the load balancing principle, the charging pile terminal is subjected to charging service, and the specific method comprises the following steps:
the charging pile terminal which initiates the charging request currently is divided into a terminal queue ListB, and the charging pile terminal is divided into a terminal queue ListA before the charging request is initiated currently;
and selecting a load balancing principle according to a preset selection strategy.
Preferably, the load balancing principle includes a load balancing principle a, and a scheduling method of the load balancing principle a is as follows:
Step 2.1A, the dispatch center subsystem combines the charging pile terminals of ListA and ListB to form ListC, empties ListF, and then Assignment to/>；
Step 2.2A, the dispatching center subsystem calculates the kilowatt-hour surplus w (J) required by full charge of each charging pile terminal in ListC, wherein J takes values of 1, the..once, J, and J are the total number of the charging pile terminals in ListC, and the ListD and the ListE are emptied;
Step 2.3A, calculating the duty ratio of the load power of each charging pile terminal in ListC by the subsystem of the dispatching center, and the duty ratio of the load power of the charging pile terminal n The calculation method comprises the following steps:
；
Step 2.4A, calculating the configuration current value of each charging pile terminal n in ListC by the dispatching center subsystem The calculation method comprises the following steps:
，
Wherein the method comprises the steps of For the nominal voltage value of the charging pile terminal n,/>For the nominal current value of the charging pile terminal n, and will/>Greater than/>Is placed into ListD and ListF,Less than or equal to/>ListE is placed at the charging pile terminal;
step 2.5A, the dispatch center subsystem determines ListD if it is empty,
If so, each charging pile terminal n in the schedule ListF is according to the voltage value、/>Charging service is carried out, and each charging pile terminal n in the schedule ListE is carried out according to the voltage value/>、/>Charging service is carried out;
If not, then ListC is cleared and ListE is assigned to ListC, then the total load power value P_tmp generated by each charging pile terminal based on the configured operating current and operating voltage is calculated ListD, and then the total load power value P_tmp is calculated =-P_tmp and jumps to step 2.2A;
In the steps 2.1A to 2.5A, when the scheduling central subsystem finds that the charging pile terminal finishes charging or a new charging pile terminal initiates a charging request, a load balance scheduling triggering event is generated to trigger the scheduling operation of the steps 2.1A to 2.5A;
ListD and ListE are preset terminal queues, and initial values are empty.
Preferably, the load balancing principle comprises a load balancing principle B, and the scheduling method of the load balancing principle B is as follows:
Step 2.1B, a dispatching center subsystem calculates kilowatt-hour Surplus W (J) required by full charge of all charging pile terminals in the ListA, wherein J takes values of 1, and J, J is the total number of the charging pile terminals in the ListA;
Step 2.2B, the dispatching center subsystem orders from small to large according to Surplus W (j), and writes the ordering result into ListG;
Step 2.3B, the dispatching center subsystem finds out front N charging pile terminals with the smallest sum of load power from ListG and larger than (P_current+P_request-P_bridge), and puts the charging pile terminals into ListH;
step 2.4B, each charging pile terminal in the dispatching center subsystem dispatching ListB carries out charging service according to the respective standard voltage and current;
In the steps 2.1B to 2.4B, when the dispatching center subsystem finds that the charging pile terminal is charged, detecting ListH whether the charging pile terminal needs to be charged, if so, distributing the residual power to charging pile terminals with high Surplus W (j) preferentially according to the sequence of Surplus W (j) in ListH, and distributing the residual power to ListH to be charged at the last charging pile terminal after ListB charging pile terminal is distributed;
In the steps 2.1B to 2.4B, when the dispatching center subsystem finds that a new charging pile terminal initiates a charging request, a load balancing dispatching trigger event is generated to trigger the dispatching operation of the steps 2.1B to 2.4B;
ListG and ListG are preset terminal queues, and initial values are empty.
Preferably, the load balancing principle includes a load balancing principle C, and a scheduling method of the load balancing principle C is as follows:
step 2.1C, the dispatching center subsystem combines the charging pile terminals of the ListA and ListB to form ListT;
Step 2.2C, the dispatching center subsystem calculates a kilowatt-hour surplus w (J) required by full charge of each charging pile terminal in ListT, wherein J takes a value of 1, and J is the total number of terminals in ListT;
Step 2.3C, the dispatching center subsystem ranks ListT according to Surplus W (j) from large to small, selects a charging pile terminal of the previous Ratio1, and puts ListC;
Step 2.4C, the dispatching center subsystem distributes charging current and charging voltage according to the charging pile terminals in the step ListC from step 2.1A to step 2.5A, distributes the remaining power to the charging pile terminals arranged in front in ListT when the available power is larger than the required power in ListC, and charges based on the distribution result;
In the steps 2.1A to 2.5A, when the dispatching center subsystem finds that the charging pile terminal is charged or a new charging pile terminal initiates a charging request, the member is reselected ListC and the charging current and voltage are redistributed according to the steps 2.1C to 2.4C.
Compared with the prior art, the application has the beneficial effects that:
According to the application, the budget load power value P_hedget in the jurisdiction is taken as constraint, and the charging configuration parameters of the charging pile terminal are dynamically scheduled and updated based on event triggering by a scheduling strategy of a remaining time fairness principle, a new priority guarantee principle and a saturation back-off principle, so that the purpose of maximum intelligent use of the budget load power is realized on the premise of not overloading the electric energy, the upper limit of regional power utilization can be effectively controlled, the full use of the electric energy is ensured, the power utilization safety is greatly ensured, and the charging service efficiency is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application.
Figure 1 is a schematic flow chart of the method of the application,
FIG. 2 is a schematic diagram of the system components of the present application.
Detailed Description
The application will be further described with reference to the drawings and examples.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments in accordance with the present disclosure. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
In the present disclosure, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, are merely relational terms determined for convenience in describing structural relationships of the various components or elements of the present disclosure, and do not denote any one of the components or elements of the present disclosure, and are not to be construed as limiting the present disclosure.
As shown in fig. 1 to 2, the present application provides a charging pile charging load balancing and scheduling system, including: the charging pile terminal subsystem and the dispatching center subsystem have the following functions:
Charging pile terminal subsystem: the subsystem is responsible for initiating a charging request, wherein the charging request at least comprises kilowatt-hours, a nominal voltage value and a nominal current value required by full charge of a charging pile terminal, and performs charging service according to charging configuration parameters scheduled by the scheduling center subsystem;
Scheduling center subsystem: the subsystem judges whether the charging request of a new charging pile terminal can be born according to the current load power of the administered area, if so, the subsystem performs charging service according to the nominal voltage value and the nominal current value of the new charging pile terminal, and if not, the subsystem performs charging service on the automobile after adjusting the charging configuration parameters of each charging pile terminal in the administered area according to the load balancing principle.
Based on the system, the application also provides a charging pile charging load balance scheduling method, which comprises the following specific steps:
Step 1, a charging pile terminal subsystem initiates a charging request, wherein the charging request at least comprises kilowatt-hour, a nominal voltage value and a nominal current value required by full charge of a charging pile terminal;
And 2, judging whether the charging request of the new charging pile terminal can be born according to the current load power of the administered area by the dispatching center subsystem, if so, carrying out charging service according to the nominal voltage value and the current value of the new charging pile terminal, and if not, adjusting the charging configuration parameters of each charging pile terminal in the administered area according to the load balancing principle and then carrying out charging service on the automobile.
Specifically, in the step1, kilowatt-hour, nominal voltage value and nominal current value information required by full charge of the charging pile terminal are obtained by reading battery management system information of the automobile connected to the charging pile by the charging pile terminal.
Specifically, in step 2, the scheduling center subsystem determines whether the charging request of the new charging pile terminal can be born according to the current load power p_current of the administered area, which is as follows:
And the dispatching center subsystem calculates U_request I_request to obtain rated power P_request according to the nominal voltage U_request and the nominal current I_request of the charging pile terminal requesting charging, then judges whether (P_current+P_request) is smaller than or equal to the jurisdiction budget load power value P_bridge, and if so, judges that the charging request of the new charging pile terminal can be born.
Specifically, in the step 2, after the charging configuration parameters of each charging pile in the jurisdiction are adjusted according to the load balancing principle, charging service is performed on the charging pile terminal, and the specific method comprises the following steps:
the charging pile terminal which initiates the charging request currently is divided into a terminal queue ListB, and the charging pile terminal is divided into a terminal queue ListA before the charging request is initiated currently;
specifically, the load balancing principle includes a load balancing principle a, and the scheduling method of the load balancing principle a is as follows:
Step 2.1A, the dispatch center subsystem combines the charging pile terminals of ListA and ListB to form ListC, empties ListF, and then Assignment to/>；
Step 2.2A, the dispatching center subsystem calculates the kilowatt-hour surplus w (J) required by full charge of each charging pile terminal in ListC, wherein J takes values of 1, the..once, J, and J are the total number of the charging pile terminals in ListC, and the ListD and the ListE are emptied;
Step 2.3A, calculating the duty ratio of the load power of each charging pile terminal in ListC by the subsystem of the dispatching center, and the duty ratio of the load power of the charging pile terminal n The calculation method comprises the following steps:
；
Step 2.4A, calculating the configuration current value of each charging pile terminal n in ListC by the dispatching center subsystem The calculation method comprises the following steps:
，
Wherein the method comprises the steps of For the nominal voltage value of the charging pile terminal n,/>For the nominal current value of the charging pile terminal n, and will/>Greater than/>Is placed into ListD and ListF,Less than or equal to/>ListE is placed at the charging pile terminal;
step 2.5A, the dispatch center subsystem determines ListD if it is empty,
If so, each charging pile terminal n in the schedule ListF is according to the voltage value、/>Charging service is carried out, and each charging pile terminal n in the schedule ListE is carried out according to the voltage value/>、/>Charging service is carried out;
If not, then ListC is cleared and ListE is assigned to ListC, then the total load power value P_tmp generated by each charging pile terminal based on the configured operating current and operating voltage is calculated ListD, and then the total load power value P_tmp is calculated =-P_tmp and jumps to step 2.2A;
In the steps 2.1A to 2.5A, when the scheduling central subsystem finds that the charging pile terminal finishes charging or a new charging pile terminal initiates a charging request, a load balance scheduling triggering event is generated to trigger the scheduling operation of the steps 2.1A to 2.5A;
ListD and ListE are preset terminal queues, and initial values are empty.
Specifically, the load balancing principle comprises a load balancing principle B, and the scheduling method of the load balancing principle B is as follows:
Step 2.1B, a dispatching center subsystem calculates kilowatt-hour Surplus W (J) required by full charge of all charging pile terminals in the ListA, wherein J takes values of 1, and J, J is the total number of the charging pile terminals in the ListA;
Step 2.2B, the dispatching center subsystem orders from small to large according to Surplus W (j), and writes the ordering result into ListG;
Step 2.3B, the dispatching center subsystem finds out front N charging pile terminals with the smallest sum of load power from ListG and larger than (P_current+P_request-P_bridge), and puts the charging pile terminals into ListH;
step 2.4B, each charging pile terminal in the dispatching center subsystem dispatching ListB carries out charging service according to the respective standard voltage and current;
In the step 2.4B, charging pile terminals remaining after ListH is subtracted from ListG are always charged according to the original charging configuration mode;
In the steps 2.1B to 2.4B, when the dispatching center subsystem finds that the charging pile terminal is charged, detecting ListH whether the charging pile terminal needs to be charged, if so, distributing the residual power to charging pile terminals with high Surplus W (j) preferentially according to the sequence of Surplus W (j) in ListH, and distributing the residual power to ListH to be charged at the last charging pile terminal after ListB charging pile terminal is distributed;
In the steps 2.1B to 2.4B, when the dispatching center subsystem finds that a new charging pile terminal initiates a charging request, a load balancing dispatching trigger event is generated to trigger the dispatching operation of the steps 2.1B to 2.4B;
ListG and ListG are preset terminal queues, and initial values are empty.
Specifically, the load balancing principle includes a load balancing principle C, and the scheduling method of the load balancing principle C is as follows:
step 2.1C, the dispatching center subsystem combines the charging pile terminals of the ListA and ListB to form ListT;
Step 2.2C, the dispatching center subsystem calculates a kilowatt-hour surplus w (J) required by full charge of each charging pile terminal in ListT, wherein J takes a value of 1, and J is the total number of terminals in ListT;
Step 2.3C, the dispatching center subsystem ranks ListT according to Surplus W (j) from large to small, selects a charging pile terminal of the previous Ratio1, and puts ListC;
Step 2.4C, the dispatching center subsystem distributes charging current and charging voltage according to the charging pile terminals in the step ListC from step 2.1A to step 2.5A, distributes the remaining power to the charging pile terminals arranged in front in ListT when the available power is larger than the required power in ListC, and charges based on the distribution result;
In the steps 2.1A to 2.5A, when the dispatching center subsystem finds that the charging pile terminal is charged or a new charging pile terminal initiates a charging request, the member is reselected ListC and the charging current and voltage are redistributed according to the steps 2.1C to 2.4C.
The user can actively select a load balancing principle in the load balancing principles A, B, C through the dispatching center subsystem, or can automatically select the load balancing principle through a preset strategy, and the preset strategy can select different load balancing principles according to the traffic flow of the administered area or according to the time period of the dispatching center subsystem.
A specific embodiment of a load balancing and scheduling system for charging a charging pile is described below with specific examples:
Example 1: in this embodiment, assuming that the load power value p_bridge is equal to 190000 watts according to the administered area, assuming that two charging pile terminals are currently charging in the area administered by the dispatching center subsystem, namely, charging pile terminal 1 and charging pile terminal 2, the dispatching system has dispatched the two charging pile terminals to charge according to the nominal voltage value and the current value thereof, the dispatching center subsystem determines whether the charging request of the new charging pile terminal can be born according to the current load power p_current of the administered area, if the charging pile terminal 3 initiates the charging request at the moment T0, and the kilowatt-hour required by the charging request to fully charge is 60, the nominal voltage value is 440 v, and the nominal current value is 220 a, the dispatching center subsystem determines whether the charging request of the new charging pile terminal can bear according to the current load power p_current of the administered area, which is as follows:
the scheduling central subsystem obtains rated power p_request equal to 440×220=88000 watts by calculating u_request×i_request according to the nominal voltage value u_request (440 v in this embodiment) and the nominal current value i_request (220 a in this embodiment) of the charging pile terminal requesting charging, then determines (p_current+p_request) = (84000+88000) = 172000 watts, and is less than or equal to the jurisdictional budget load power value p_bat (190000 watts in this embodiment), so that the scheduling charging pile terminal 3 charges according to the nominal voltage and current of the charging pile terminal, and the relevant data refer to table 1.
Table 1 example reference data
Example 2: in this embodiment, assuming that the load power value p_bridge is equal to 160000 watts according to the administered area, assuming that two charging pile terminals are currently charging in the area administered by the dispatching center subsystem, namely, charging pile terminal 1 and charging pile terminal 2, the dispatching system has dispatched the two charging pile terminals to charge according to the nominal voltage value and the current value thereof, the dispatching center subsystem determines whether the charging request of the new charging pile terminal can be borne according to the current load power p_current of the administered area, if the charging pile terminal 3 initiates the charging request at the time point T0, the kilowatt time required by the charging pile terminal full charge carried by the charging request is 60, the nominal voltage value is 440 v, the nominal current value is 220 a, and the related data refers to table 1, and the dispatching center subsystem determines whether the charging request of the new charging pile terminal can bear according to the current load power p_current of the administered area, which specifically includes:
The scheduling central subsystem obtains rated power p_request equal to 440×220=96800 watts by calculating u_request×i_request according to the nominal voltage value u_request (440 v in this embodiment) and nominal current value i_request (220 a in this embodiment) of the charging pile terminal requesting charging, then determines that (p_current+p_request) = (84000+96800) = 180800 watts is greater than the jurisdictional budget load power value p_buffer (160000 watts in this embodiment), so that it is determined that charging service can not be performed according to the nominal voltage and current of the new charging pile terminal, and then the scheduling central subsystem adjusts the charging configuration parameters of each charging pile in the jurisdiction according to the load balance principle and then performs charging service on the terminal (in this embodiment, the following is adopted:
the charge stake end subsystem of the dispatch center subsystem currently initiating the charge request is divided into end queues ListB (ListB includes charge stake end 3), the charge stake end is divided into end queues ListA (ListA includes charge stake end 1, charge stake end 2) before the charge request is currently initiated, then the charge stake ends of ListA and ListB are combined according to step 2.1A, dispatch center subsystem to form ListC (ListC includes charge stake end 1, charge stake end 2, charge stake end 3 at this point), the ListF is emptied, and the charge stake end is removed Assignment to/>(Then equal to160000 Watts); next, according to step 2.2A, the scheduling center subsystem calculates ListC kilowatt-hours surplus w (J) required for full charge of each charging pile terminal, where J is 1, and J is the total number of terminals in ListC, and ListD and ListE are emptied, in this embodiment ListC includes three charging pile terminals, so J is 3, surplus w (1) corresponds to charging pile terminal 1, 40 kilowatt-hours, surplusW (2) corresponds to charging pile terminal 2, 50 kilowatt-hours, surplusW (3) corresponds to charging pile terminal 3, and 60 kilowatt-hours; then according to the step 2.3A, the dispatching center subsystem calculates the load power ratio of each charging pile terminal in ListC, the load power ratio of the charging pile terminal n/>The calculation method comprises the following steps:
；
can be calculated according to the formula 、/>、/>The results were as follows:
next, according to step 2.4A, the scheduling center subsystem calculates ListC the configuration current value of each charging pile terminal n The calculation method comprises the following steps:
，
Then, according to the formula, it can be obtained:
And handle Greater than/>Is placed into ListD and ListF,Less than or equal to/>ListE due to the charging pile terminal 1Greater than/>Accordingly, the charging pile terminal 1 is put into ListD and ListF (charging pile terminal 1 is included in ListF at this time), and the charging pile terminal 2 and the charging pile terminal 3/>Less than or equal to/>Thus, the charging pile terminal 2 and the charging pile terminal 3 are put into ListE; next, according to step 2.5A, the scheduling center subsystem determines ListD whether it is empty, if the determination result is not empty, it clears ListC, assigns ListE to ListC (including the charging pile terminal 2 and the charging pile terminal 3 in ListC at this moment), calculates the total load power value p_tmp generated by each charging pile terminal in ListD based on the configured working current and working voltage, and calculates/>, p_tmp=200x150=30000 watts=-P_tmp=160000-30000=130000 and jump to step 2.2A;
next, according to step 2.2A, the scheduling central subsystem calculates a kilowatt-hour surplus w (J) required for full charge of each charging pile terminal in ListC, where J takes a value of 1,..once, J is the total number of charging pile terminals in ListC, and list d and list e are emptied, at this time ListC includes charging pile terminal 2 and charging pile terminal 3, surplus w (1) corresponds to charging pile terminal 2, takes a value of 50 kilowatt-hours, surplusW (2) corresponds to charging pile terminal 3, and takes a value of 60 kilowatt-hours; next, according to step 2.3A, the load power ratio of each charging pile terminal in the dispatching center subsystem calculates ListC, the load power ratio of the charging pile terminal n The calculation method comprises the following steps:
；
Then it can be derived from the above formula
Next, according to step 2.4A, the scheduling center subsystem calculates ListC the configuration current value of each charging pile terminal nThe calculation method comprises the following steps:
can be obtained according to the above formula
HandleGreater than/>Is placed into ListD and ListF,Less than or equal to/>ListE due to the charging pile terminal 2Greater than/>Thus, the charging pile terminal 2 is put into ListD (in which case the charging pile terminal 2 is included in ListD) and ListF (in which case the charging pile terminal 1 and the charging pile terminal 2 are included in ListF), since the pile terminal 3Less than or equal to/>Therefore, the electric pile terminals 3 are put into ListE, then according to step 2.5A, the dispatching center subsystem judges ListD whether it is empty, if the judging result is not empty, it empties ListC, assigns ListE to ListC, then calculates ListD the total load power value p_tmp generated by each electric pile terminal based on the configured working current and working voltage, and then calculates/>=/>-P_tmp=130000-300×180=76000 watts, and jump to step 2.2A;
Then calculating the kilowatt-hour Surplus W (J) required by full charge of each charging pile terminal in ListC according to the step 2.2A, wherein J takes the value of 1, the number of the charging pile terminals in ListC, J, and clearing ListD and ListE, wherein the charging pile terminal 3 is in ListC, and then calculating the load power ratio of each charging pile terminal in ListC according to the step 2.3A and the scheduling central subsystem, wherein the load power ratio of the charging pile terminal n is calculated The calculation method comprises the following steps: /(I)
；
Since ListC is the charging pile terminal 3Taking the value as 100%, and then calculating the configuration current value/>, of each charging pile terminal n in ListC according to the step 2.4A and the dispatching center subsystemThe calculation method comprises the following steps:
，
the result is calculated according to the formula:
and/> Greater than/>Is placed into ListD and ListF,Less than or equal to/>Is put into ListE, since this round of iteration only charges the pile terminal 3, and it/>Less than or equal to/>Therefore, the charging pile terminal 3 is put into ListE, while ListD is empty (empty after each iteration, and if a new round of terminals which do not meet the conditions are put into the queue, the queue is empty), then, according to step 2.5A, the scheduling center subsystem determines whether ListD is empty, and if the determination result is yes, each charging pile terminal n in ListF is scheduled according to the voltage value/>、/>Charging service is carried out, and each charging pile terminal n in the schedule ListE is carried out according to the voltage value/>、/>In this embodiment, the charging pile terminals 1 and 2 are scheduled to charge according to their nominal voltages and currents, and the charging pile terminal 3 is scheduled to charge according to their nominal voltages and/>(190 A in this embodiment) for charging, it can be seen from this embodiment that, based on the scheduling policy of the present invention, the total power of the three charging pile terminals is: 200×150+300×180+400×190=160000watts, it can be seen that, after adopting the invention, in the case that the power of the vehicle to be charged is greater than the regional budget load power value p_budget, the invention dynamically schedules and updates the charging configuration parameters of the charging pile terminal based on event triggering by using the principle of remaining time fairness, so as to ensure that the vehicle to be charged fairly enjoys the regional budget total power, and in the case that the upper limit of the charging input power of the vehicle to be charged is limited, the invention can adaptively allocate the determined excessive power intelligently to other charging pile terminals based on the principle of remaining time fairness, thereby realizing the purpose of maximum intelligent use of the budget load power on the premise of not overloading the use of regional budget power, effectively controlling the upper limit of regional power consumption, ensuring the full use of power, greatly ensuring the safety of power consumption and improving the charging service efficiency.
Example 3: referring to the data in table 1, a load balancing principle B (new priority guarantee principle) is adopted, a moment point T0 is adopted, a charging terminal 3 initiates a charging request, then ListB comprises a charging pile terminal 3, listA comprises a charging pile terminal 1 and a charging pile terminal 2, firstly, according to step 2.1B, a dispatching center subsystem calculates kilowatt-hour surplus w (J) required by full charge of each charging pile terminal in ListA, wherein J takes a value of 1, the number of J is equal to the total number of charging pile terminals in ListA, surplusW (1) corresponds to the charging pile terminal 1, and SurplusW (2) corresponds to the charging pile terminal 2, and the value of J is 50 kilowatt-hours; then according to step 2.2B, the scheduling center subsystem orders according to Surplus W (j) from small to large and writes the ordering result into ListG, the ListG result is { charging pile terminal 1, charging pile terminal 2}, then according to step 2.3B, the scheduling center subsystem finds out the first N charging pile terminals with the smallest sum of load powers and larger than (P_current+P_request-P_bridge) from ListG, and puts the charging pile terminals into ListH, since P_current+P_request-P_bridge=200×150+300×180+400×220 × 220 }
160000 The power of the charging pile terminal 1 is calculated first, since the elements surplus w (j) in ListG are ordered from small to large as { charging pile terminal 1, charging pile terminal 2}, the power of the charging pile terminal 1 is 200×150=30000, just above 12000, and the number of involved elements is the smallest, then the charging pile terminal 1 is rated ListH, then the charging pile terminal 3 is scheduled to charge according to its nominal voltage and current in step 2.4B, scheduling center subsystem schedule ListB, then the charging pile terminal 3 is scheduled to charge according to voltage 400 v, current 220A, since the charging pile terminal 1 releases 30000 watts, and the terminal 3 only uses 12000 watts, thus the remaining 18000 watts are allocated to the charging pile terminal 1 to charge, the charging pile terminal 1 is configured to charge according to the voltage of 200V and the current of 18000/200=90 amperes, after the invention is adopted, under the condition that the power of the automobile to be charged is larger than the regional budget load power value P_budget, the invention dynamically schedules and updates the charging configuration parameters of the charging pile terminal based on event triggering by adopting a new priority guarantee principle, the terminal with the least kilowatt-hour required by full charge gives a chance to charge the automobile to be charged in priority, under the condition that the new priority principle is ensured, under the condition that the upper limit of the charging input power of the automobile to be charged is limited, the determined excessive power can be allocated to other terminals in an adaptive manner, thereby realizing the purpose of maximum intelligent use of the budget load power on the premise of not overloading the regional budget power, the upper limit of regional power utilization can be effectively controlled, the full use of electric energy is ensured, the power utilization safety is greatly ensured, and the charging service efficiency is improved.
Example 4: referring to the data in table 1, a load balancing principle C (saturated back-off principle scheduling policy) is adopted, a moment point T0 is adopted, a charging terminal 3 initiates a charging request, then ListB includes a charging pile terminal 3, listA includes a charging pile terminal 1 and a charging pile terminal 2, firstly, according to step 2.1C, a scheduling central subsystem merges the charging pile terminals of ListA and ListB to form ListT, at this moment ListT includes the charging pile terminal 1, the charging pile terminal 2 and the charging pile terminal 3, then, according to step 2.2C, the scheduling central subsystem calculates a kilowatt-hour surplus w (J) required by full charging of each charging pile terminal in ListT, wherein J is 1, the number of the charging pile terminals in ListT, J is the total number of the charging pile terminals in ListT, in this embodiment ListT includes three charging pile terminals, therefore, J is 3, surplus w (1) corresponds to the charging pile terminal 1, surplusW (2) corresponds to the charging pile terminal 2 when the charging pile terminal is 40 kilowatts, and SurplusW (3) corresponds to the charging pile terminal 3 kilowatt-hour to the charging pile terminal 60 kilowatt-hour; next, according to step 2.3C, the scheduling center subsystem orders ListT according to surplus w (j) from large to small, listT member ordering results are { charging pile terminal 3, charging pile terminal 2, charging pile terminal 1}, selecting the charging pile terminal of the previous Ratio1 (Ratio 1 takes a value of 2/3 in this embodiment), placing ListC, since ListT includes three members, taking the first 2 of ListT into ListC, listC includes { charging pile terminal 3, charging pile terminal 2}, then the scheduling center performs charging current and charging voltage allocation according to steps ListC of steps 2.1A to 2.5A according to steps 2.4C, scheduling center subsystem allocates remaining power to the charging pile terminal of the previous charging pile terminal of ListT when the available power is greater than the required power in ListC, and performs charging based on the allocation results, in this embodiment, since charging pile terminal 2, terminal budget 3 are taken out, charging pile terminal 3 are not equal to the remaining power is equal to the nominal power, and no charging pile terminal 2 is equal to the remaining power is equal to 3, and the remaining power is equal to the nominal power, and the charging pile terminal is not equal to the charging pile terminal 2, and the charging pile terminal 3 is equal to the available power. The method comprises the steps of distributing 18000 watts to a front charging pile terminal in ListT, distributing ListT to the charging pile terminal 1 only, distributing the power to the charging pile terminal 1, enabling charging current of the charging pile terminal 1 to be 18000/200=90 amperes, dynamically dispatching and updating charging configuration parameters of the charging pile terminal based on event triggering through a saturated deferral principle dispatching strategy, charging the terminals with the Ratio of Ratio1 after sequencing from high to low kilowatt hours required by full charge, and distributing the rest power to the terminals with the Ratio of Ratio1 after the saturated deferral principle dispatching strategy in a self-adaptive mode under the condition that the upper limit of charging input power of a vehicle to be charged is limited, so that the purpose of intelligent use of budget load power is achieved on the premise of not overloading a using area budget power.
According to the embodiment, the method is adopted, the budget load power value P_bridge in the jurisdiction is taken as constraint, and the charging configuration parameters of the charging pile terminal are dynamically scheduled and updated based on event triggering by a remaining time fairness principle, a new priority guarantee principle and a saturated deferral principle scheduling strategy, so that the purpose of maximum intelligent use of the budget load power is realized on the premise of not overloading electric energy, and the load balance scheduling method provided by the invention can effectively control the upper limit of regional power consumption, ensure the full use of the electric energy, greatly ensure the power consumption safety and improve the charging service efficiency.
The above is only a preferred embodiment of the present application, and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
While the foregoing description of the embodiments of the present application has been presented in conjunction with the drawings, it should be understood that it is not intended to limit the scope of the application, but rather, it is intended to cover all modifications or variations within the scope of the application as defined by the claims of the present application.
Claims (4)
1. The charging pile charging load balance dispatching method is characterized by comprising the following specific steps of:
Step 1, a charging pile terminal subsystem initiates a charging request, wherein the charging request at least comprises kilowatt-hour, a nominal voltage value and a nominal current value required by full charge of a charging pile terminal;
Step 2, the dispatching center subsystem judges whether the charging request of a new charging pile terminal can be born according to the current load power of the administered area, if so, charging service is carried out according to the nominal voltage value and the current value of the new charging pile terminal, and if not, charging service is carried out on the automobile after the charging configuration parameters of each charging pile terminal in the administered area are adjusted according to the load balancing principle;
In the step 2, the scheduling center subsystem determines whether the charging request of the new charging pile terminal can be born according to the current load power p_current of the administered area, which is as follows:
The scheduling center subsystem calculates U_request I_request to obtain rated power P_request according to the nominal voltage U_request and the nominal current I_request of the charging pile terminal requesting charging, then judges whether (P_current+P_request) is smaller than or equal to the jurisdiction budget load power value P_bridge, if so, judges that the charging request of the new charging pile terminal can be born;
in the step 2, after charging configuration parameters of each charging pile in the jurisdiction are adjusted according to a load balancing principle, charging service is performed on the charging pile terminal, and the specific method comprises the following steps:
the charging pile terminal which initiates the charging request currently is divided into a terminal queue ListB, and the charging pile terminal is divided into a terminal queue ListA before the charging request is initiated currently;
selecting a load balancing principle according to a preset selection strategy;
The load balancing principle comprises a load balancing principle A, and the scheduling method of the load balancing principle A is as follows:
Step 2.1A, the dispatch center subsystem combines the charging pile terminals of ListA and ListB to form ListC, empties ListF, and then Assignment to/>；
Step 2.2A, the dispatching center subsystem calculates the kilowatt-hour surplus w (J) required by full charge of each charging pile terminal in ListC, wherein J takes values of 1, the..once, J, and J are the total number of the charging pile terminals in ListC, and the ListD and the ListE are emptied;
Step 2.3A, calculating the duty ratio of the load power of each charging pile terminal in ListC by the subsystem of the dispatching center, and the duty ratio of the load power of the charging pile terminal n The calculation method comprises the following steps:
；
Step 2.4A, calculating the configuration current value of each charging pile terminal n in ListC by the dispatching center subsystem The calculation method comprises the following steps:
，
Wherein the method comprises the steps of For the nominal voltage value of the charging pile terminal n,/>For the nominal current value of the charging pile terminal n, and will/>Greater than/>Is placed into ListD and ListF,Less than or equal to/>ListE is placed at the charging pile terminal;
step 2.5A, the dispatch center subsystem determines ListD if it is empty,
If so, each charging pile terminal n in the schedule ListF is according to the voltage value、/>Charging service is carried out, and each charging pile terminal n in the schedule ListE is carried out according to the voltage value/>、/>Charging service is carried out;
If not, then ListC is cleared and ListE is assigned to ListC, then the total load power value P_tmp generated by each charging pile terminal based on the configured operating current and operating voltage is calculated ListD, and then the total load power value P_tmp is calculated =-P_tmp and jumps to step 2.2A;
In the steps 2.1A to 2.5A, when the scheduling central subsystem finds that the charging pile terminal finishes charging or a new charging pile terminal initiates a charging request, a load balance scheduling triggering event is generated to trigger the scheduling operation of the steps 2.1A to 2.5A;
ListD and ListE are preset terminal queues, and initial values are empty.
2. The charging pile charging load balance scheduling method according to claim 1, characterized by comprising the following steps:
In the step 1, kilowatt-hour, nominal voltage value and nominal current value information required by full charge of the charging pile terminal are obtained by reading battery management system information of the automobile connected to the charging pile by the charging pile terminal.
3. The charging pile charging load balance scheduling method according to claim 1, characterized by comprising the following steps:
The load balancing principle comprises a load balancing principle B, and the scheduling method of the load balancing principle B comprises the following steps:
Step 2.1B, a dispatching center subsystem calculates kilowatt-hour Surplus W (J) required by full charge of all charging pile terminals in the ListA, wherein J takes values of 1, and J, J is the total number of the charging pile terminals in the ListA;
Step 2.2B, the dispatching center subsystem orders from small to large according to Surplus W (j), and writes the ordering result into ListG;
Step 2.3B, the dispatching center subsystem finds out front N charging pile terminals with the smallest sum of load power from ListG and larger than (P_current+P_request-P_bridge), and puts the charging pile terminals into ListH;
step 2.4B, each charging pile terminal in the dispatching center subsystem dispatching ListB carries out charging service according to the respective standard voltage and current;
In the steps 2.1B to 2.4B, when the dispatching center subsystem finds that the charging pile terminal is charged, detecting ListH whether the charging pile terminal needs to be charged, if so, distributing the residual power to charging pile terminals with high Surplus W (j) preferentially according to the sequence of Surplus W (j) in ListH, and distributing the residual power to ListH to be charged at the last charging pile terminal after ListB charging pile terminal is distributed;
In the steps 2.1B to 2.4B, when the dispatching center subsystem finds that a new charging pile terminal initiates a charging request, a load balancing dispatching trigger event is generated to trigger the dispatching operation of the steps 2.1B to 2.4B;
ListG and ListG are preset terminal queues, and initial values are empty.
4. The charging pile charging load balance scheduling method according to claim 1, characterized by comprising the following steps:
the load balancing principle comprises a load balancing principle C, and the scheduling method of the load balancing principle C is as follows:
step 2.1C, the dispatching center subsystem combines the charging pile terminals of the ListA and ListB to form ListT;
Step 2.2C, the dispatching center subsystem calculates a kilowatt-hour surplus w (J) required by full charge of each charging pile terminal in ListT, wherein J takes a value of 1, and J is the total number of terminals in ListT;
Step 2.3C, the dispatching center subsystem ranks ListT according to Surplus W (j) from large to small, selects a charging pile terminal of the previous Ratio1, and puts ListC;
Step 2.4C, the dispatching center subsystem distributes charging current and charging voltage according to the charging pile terminals in the step ListC from step 2.1A to step 2.5A, distributes the remaining power to the charging pile terminals arranged in front in ListT when the available power is larger than the required power in ListC, and charges based on the distribution result;
In the steps 2.1A to 2.5A, when the dispatching center subsystem finds that the charging pile terminal is charged or a new charging pile terminal initiates a charging request, the member is reselected ListC and the charging current and voltage are redistributed according to the steps 2.1C to 2.4C.
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