CN106712166B - A kind of charging station power method for automatically regulating and system - Google Patents
A kind of charging station power method for automatically regulating and system Download PDFInfo
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- CN106712166B CN106712166B CN201611145058.0A CN201611145058A CN106712166B CN 106712166 B CN106712166 B CN 106712166B CN 201611145058 A CN201611145058 A CN 201611145058A CN 106712166 B CN106712166 B CN 106712166B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
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Abstract
A kind of charging station power method for automatically regulating and system, method include: S1, the operating status for monitoring charging pile in real time, execute S2 if the starting charging of some charging pile, execute S3 if some charging pile stops charging；S2, total charge power in charging and the charging pile for starting charging is calculated, as total charge power is regulating and controlling within power threshold, then the charging pile for starting charging distributes the rated power of its corresponding rifle and turns S1, otherwise all are pre-assigned in the charge power of the charging pile of charging in charging and starting charging charging pile, according to the lowest power of the rifle of each charging pile, can with total rated power to predistribution power be adjusted after export, turn S1；S3, the charge power for stopping the charging pile of charging is pre-assigned to remaining charging pile to charge, and is exported after being adjusted according to the rated power of the rifle of the charging pile to charge to predistribution power, turn S1.The present invention can be relieved the problem of charging station resource scarcity.
Description
Technical Field
The invention relates to the field of charging infrastructures, in particular to a charging station power automatic regulation and control method and system.
Background
During charging, the transformer outputs power according to the input power of the charging pile, and the available power is known according to the total power and the power actually used and then redistributed to other charging piles. The prior art mainly has the following defect of insufficient capacity, and the reason of the defect mainly has two aspects, namely, the capacity of the transformer is insufficient due to budget and space; and secondly, the space of the old parking lot is insufficient, and the capacity expansion of the transformer is difficult.
Disclosure of Invention
The present invention provides a method and a system for automatically regulating and controlling power of a charging station, aiming at the above-mentioned defects in the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention discloses a charging station power automatic regulation and control method, which comprises the following steps:
s1, monitoring the running states of all charging piles of the charging station in real time, executing the step S2 if a certain charging pile starts charging, and executing the step S3 if a certain charging pile stops charging;
s2, calculating the total charging power of the charging piles which are charged and started to be charged, if the total charging power is within a regulation power threshold value, distributing the rated power of the corresponding gun to the charging pile which is started to be charged and turning to S1, otherwise, pre-distributing the charging power of all the charging piles which are charged to the charging piles which are charged and started to be charged, adjusting the pre-distributed power according to the lowest power and the available total rated power of the guns of all the charging piles and then outputting the adjusted pre-distributed power, and turning to S1;
and S3, pre-distributing the charging power of the charging pile stopping charging to the rest charging piles, adjusting the pre-distributed power according to the rated power of the gun of each charging pile, and outputting, and turning to the step S1.
In the charging station power automatic control method according to the present invention, the step S2 includes:
s21, regarding the rated power of the gun of the charging pile for starting charging as the charging power of the charging pile, and accumulating the charging power of the charging piles for starting charging and charging to obtain the total charging power;
s22, if the total charging power is within the regulation power threshold value, maintaining the charging power of each charging pile which is being charged unchanged, distributing the rated power of the corresponding gun for the charging pile which starts charging and turning to the step S1, otherwise, executing the step S23;
s23, calculating the weight of each charging pile based on the total charging power and the charging power of each charging pile;
s24, pre-distributing the charging power of all charging piles which are already charged to the charging piles which are already charged and start charging based on the calculated weight to obtain the pre-distributed power of each charging pile;
s25, adjusting pre-distributed power according to the lowest power of the guns of the charging piles;
s26, calculating the total pre-distribution power of all the charging piles after adjustment, if the total pre-distribution power exceeds the available total rated power, executing a step S27, otherwise, turning to a step S1;
s27, adjusting the pre-distribution power of the charging piles according to the priority and the lowest power of the charging piles until the total pre-distribution power of all the charging piles after adjustment does not exceed the available total rated power, and turning to the step S1.
In the charging station power automatic regulation and control method of the invention,
calculating the weight of the charging pile based on the following formula (1) in the step S23;
in the step S24, the pre-allocated power of the charging pile is calculated based on the following formula (2):
wherein N is a positive integer and represents the total number of charging piles which are already being charged and start charging; wiRepresents the weight of the ith charging pile,represents the charging power of the ith charging pile, Psum1Represents the total charging power in step S21,indicating the pre-allocated power, P, of the ith charging pilesum2Indicating the sum of the charging powers of the charging posts that are already charging.
In the charging station power automatic control method according to the present invention, the step S25 includes: and for each charging pile, comparing the lowest power of the gun of the charging pile with the distributed pre-distributed power, and if the distributed pre-distributed power is lower than the lowest power of the gun, adjusting the pre-distributed power of the charging pile to be the lowest power of the gun.
In the charging station power automatic control method according to the present invention, the step S27 includes: and setting the pre-distribution power of the charging piles as the lowest power of the guns corresponding to the charging piles according to the sequence that the priority is sequentially increased until the total pre-distribution power of all the adjusted charging piles does not exceed the available total rated power, wherein the priority of each charging pile is sequentially decreased according to the sequence of starting charging.
In the charging station power automatic control method according to the present invention, the step S3 includes:
s31, calculating the weight of each charging pile based on the charging power of the rest charging piles;
s32, pre-distributing the charging power of the charging pile stopping charging to the rest charging piles as the additional compensation power of the charging piles based on the calculated weight;
s33, adding the charging power and the extra compensation power of each charging pile to obtain pre-distribution power, if the pre-distribution power of the charging pile exceeds the rated power of a gun of the charging pile, marking the charging pile as a power reduction charging pile, and taking the exceeding power as the reserved power of the power reduction charging pile; if the pre-distribution power of the charging pile is smaller than the rated power of a gun of the electric pile, the charging pile is marked as a power charging pile;
s34, if the power reducing charging piles exist, accumulating the reserved power of all the power reducing charging piles to obtain total reserved power, sequentially distributing the total reserved power to each power charging pile according to the sequence that the priority is sequentially reduced to enable the pre-distributed power to reach the rated power or the total reserved power to be completely distributed, and turning to the step S1; wherein, the priority of each charging pile reduces according to the order of starting to charge in proper order.
In the charging station power automatic regulation and control method of the invention,
calculating the weight of the charging pile based on the following formula (3) in the step S31;
in the step S32, the pre-allocated power of the charging pile is calculated based on the following formula (4):
wherein M is an integer greater than zero, meaning itThe total number of charging piles remaining to be charged; wiRepresents the weight of the ith charging pile, Psum3Indicating the sum of the charging powers of the remaining charging posts,represents the charging power of the ith charging pile, PoutIndicates the charging power of the charging post stopping charging,and indicating the pre-distribution power of the ith charging pile.
In the method for automatically controlling power of a charging station according to the present invention, the step S1 is preceded by a conditional step S0: the status of the charging card is verified, and step S1 is executed when the card number of the charging card is legal and the balance is sufficient.
According to the automatic power regulation and control method for the charging station, the charging cards comprise two types, namely a common card and an accountant card, and the charging piles comprise a common charging pile and an accountant charging pile;
the charging station preferentially distributes required power for the member charging piles, and the residual power after distribution is used as the available total rated power of the common charging piles; the common charging pile is effective to both the common card and the membership card, and the membership charging pile is only effective to the membership card;
wherein, fill electric pile's priority and satisfy following two standards simultaneously: the priority of the common charging pile corresponding to the membership card is higher than that of the common charging pile corresponding to the common card; the priority of the common charging piles corresponding to the same type of cards is reduced in sequence according to the charging starting sequence.
The invention also discloses a charging station power automatic regulation and control system based on the charging station power automatic regulation and control method, which comprises
The monitoring unit is used for monitoring the running states of all charging piles of the charging station in real time;
the first regulating and controlling unit is used for calculating the total charging power of charging piles which are charged and started to be charged when a certain charging pile starts to be charged, if the total charging power is within a regulating and controlling power threshold value, distributing the rated power of a gun corresponding to the charging pile which is started to be charged, otherwise, pre-distributing the charging power of all the charging piles which are charged to the charging piles which are charged and started to be charged, and regulating and outputting the pre-distributed power according to the lowest power and the available total rated power of the guns of all the charging piles;
and the second regulation and control unit is used for pre-distributing the charging power of the charging pile which stops charging to other charging piles which are charging when a certain charging pile stops charging, and outputting the pre-distributed power after adjusting the pre-distributed power according to the rated power of the gun of each charging pile which is charging.
The implementation of the charging station power automatic regulation and control method and the system has the following beneficial effects: the regulation and control method provided by the invention is directly operated in a monitoring system without additional power device hardware, and is low in cost and environment-friendly; according to the invention, the running state of the charging pile is monitored in real time, the power distribution of the charging pile is adjusted according to the total charging power during charging, and the power distribution of the charging pile is optimized when a certain charging pile stops charging, so that the capacity of the charging station is larger, and the problem of resource shortage of the charging station can be alleviated; based on this, the charger load is in the transformer capacity range for the vast majority of time, and full load work rarely occurs, resulting in the condition of exceeding the distribution system load and jumping electricity.
Further preferably, the invention can also increase more support and realize more flexible regulation and control strategies by setting the common card and the member card as well as the common charging pile and the member charging pile.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts:
FIG. 1 is a flow chart of a charging station power automatic regulation method of the present invention;
FIG. 2 is a flowchart of step S2 in FIG. 1;
fig. 3 is a flowchart of step S3 in fig. 1.
Detailed Description
In the embodiment of the invention, the running states of all charging piles of a charging station are monitored in real time, if a certain charging pile starts charging, the total charging power of the charging pile which is charged and starts charging is calculated, if the total charging power is within a regulation power threshold value, the rated power of a gun corresponding to the charging pile which starts charging is distributed to the charging pile which starts charging, otherwise, the charging power of all charging piles which are charged is pre-distributed to the charging piles which are charged and start charging, and the pre-distributed power is output after being adjusted according to the lowest power and available total rated power of the guns of all charging piles; and if a certain charging pile stops charging, pre-distributing the charging power of the charging pile stopping charging to the rest charging piles, and adjusting the pre-distributed power according to the rated power of the gun of each charging pile and outputting the adjusted pre-distributed power. Based on the method, the cost is low, the charging station is green and environment-friendly, the capacity of the charging station is larger, the problem of resource shortage of the charging station can be solved, and the situations that the load of the charger exceeds the load of a power distribution system and the power is jumped due to the fact that the full-load work rarely occurs when the load of the charger is in the capacity range of the transformer in most of time are achieved.
In order to better understand the technical solutions, the technical solutions will be described in detail below with reference to the drawings and the specific embodiments of the specification, and it should be understood that the embodiments and specific features of the embodiments of the present invention are detailed descriptions of the technical solutions of the present application, and are not limited to the technical solutions of the present application, and the technical features of the embodiments and examples of the present invention may be combined with each other without conflict.
Referring to fig. 1, the charging station power automatic regulation method of the present invention includes:
s1, monitoring the running states of all charging piles of the charging station in real time, executing the step S2 if a certain charging pile starts charging, and executing the step S3 if a certain charging pile stops charging;
s2, calculating the total charging power of the charging piles which are charged and started to be charged, if the total charging power is within a regulation power threshold value, distributing the rated power of the corresponding gun to the charging pile which is started to be charged and turning to S1, otherwise, pre-distributing the charging power of all the charging piles which are charged to the charging piles which are charged and started to be charged, adjusting the pre-distributed power according to the lowest power and the available total rated power of the guns of all the charging piles and then outputting the adjusted pre-distributed power, and turning to S1;
and S3, pre-distributing the charging power of the charging pile stopping charging to the rest charging piles, adjusting the pre-distributed power according to the rated power of the gun of each charging pile, and outputting, and turning to the step S1.
Preferably, the step S1 is preceded by the conditional step S0: the status of the charging card is verified, and step S1 is executed when the card number of the charging card is legal and the balance is sufficient.
The steps S2 and S3 may be loaded into an existing monitoring system in the form of monitoring software for operation, and the method of the present invention will be described in detail below.
Step S1:
the step reports the state in real time, and updates the latest charging power, so that the charging power can be used for regulation and control on one hand. On the other hand, the problem of power information loss caused by midway exit of the monitoring software can be prevented.
Step S2:
referring to fig. 2, step S2 includes:
s21, taking the rated power of the gun of the charging pile for starting charging as the charging power of the charging pile, and accumulating the charging power of the charging pile for charging and starting charging to obtain the total charging power according to the following formula;
wherein, N is a positive integer, which indicates the total number of charging piles which are already charging and started to charge, and the charging pile started to charge is recorded as the NthA charging pile is arranged on the charging pile,represents the charging power of the ith charging pile, Psum1Representing the total charging power.
S22, if the total charging power is within the regulation power threshold value, maintaining the charging power of each charging pile which is being charged unchanged, distributing the rated power of the corresponding gun for the charging pile which starts charging and turning to the step S1, otherwise, executing the step S23;
s23, calculating the weight of each charging pile based on the total charging power and the charging power of each charging pile; as shown in the following equation:
wherein, WiRepresenting the weight of the ith charging pile.
S24, pre-distributing the charging power of all charging piles which are already charged to the charging piles which are already charged and start charging based on the calculated weight to obtain the pre-distributed power of each charging pile; as shown in the following equation:
wherein,indicating the pre-allocated power, P, of the ith charging pilesum2Indicating the sum of the charging powers of the charging posts that are already charging.
S25, adjusting pre-distributed power according to the lowest power of the guns of the charging piles;
step S25 specifically includes: for each charging pile, comparing the lowest power of the guns of the charging pile with the distributed pre-distributed power, and if the distributed pre-distributed power is lower than the lowest power of the guns, adjusting the pre-distributed power of the charging pile to be the lowest power of the guns
S26, calculating the total pre-distribution power of all the charging piles after adjustment, if the total pre-distribution power exceeds the available total rated power, executing a step S27, otherwise, turning to a step S1;
s27, adjusting the pre-distribution power of the charging piles according to the priority and the lowest power of the charging piles until the total pre-distribution power of all the charging piles after adjustment does not exceed the available total rated power, and turning to the step S1.
Step S27 specifically includes: setting the pre-distribution power of the charging piles as the lowest power of guns corresponding to the charging piles according to the sequence of sequentially increasing priority levels until the total pre-distribution power of all the charging piles after adjustment does not exceed the available total rated power; the priority of each charging pile is sequentially reduced according to the charging starting sequence, namely the priority protection of charging is firstly carried out, and the pre-distribution power of charging is firstly reduced.
A specific example will be described below.
If charging piles 1, 2 and 3 are currently charged, the charging power is respectively 6Kw, 5Kw and 4Kw, the gun connected to the charging pile number 4 is monitored, and the rated power of the gun is 3 Kw. Then according to step S21, the charging power of the charging pile No. 4 is first calculated to be 3Kw, the total charging power Psum16Kw +5Kw +4Kw +3Kw ═ 18 Kw; according to S22, if the regulated power threshold is 16Kw, step S23 is executed to calculate the weight of each charging pile number 1-4, which is: 6Kw/18Kw, 5Kw/18Kw, 4Kw/18Kw, 3Kw/18Kw, in step S24, the sum P of the charging powers of the charging piles No. 1-3 is calculatedsum2And (3) calculating the pre-distribution power of No. 1-4 charging piles after 6Kw +5Kw +4Kw is 15 Kw: 15Kw (6/18) ═ 5Kw, 15Kw (5/18) ═ 4.16Kw, 15Kw (4/18) ═ 3.33Kw, 15Kw (3/18) ═ 2.5Kw, at which time the total predistributed power is 5Kw +4.16Kw + -, 3.33Kw +2.5Kw is 14.99 Kw; then, step S25 is executed, if the lowest power of the guns of the number 1-4 charging piles are 4Kw, and 2Kw in sequence, it can be seen that the pre-allocated power of the number 3 charging pile is lower than the lowest power of the guns, so that the number 3 charging pile needs to be chargedPre-distribution power of the electric pile is adjusted to be 4 Kw; then, in step S26, the adjusted total pre-distribution power of all charging piles is calculated to be 5Kw +4.16Kw +4Kw +2.5Kw to be 15.66 Kw; finally, step S27 is executed, if the total pre-allocated power exceeds the available total rated power, the pre-allocated power of the charging piles needs to be decreased to the lowest power of the guns corresponding to the charging piles according to the ascending order of the priority (i.e. starting from the charging pile with the lowest priority), if one decrease is not enough, the second decrease is continued until the total pre-allocated power of all the charging piles does not exceed the available total rated power, which is shown in a table format for clarity in the process of this example:
step S3:
referring to fig. 3, step S3 includes:
the step S3 includes:
s31, calculating the weight of each charging pile based on the charging power of the rest charging piles in the charging process according to the following formula:
wherein M is an integer greater than zero, representing the total number of the rest charging piles being charged, and WiRepresents the weight of the ith charging pile, Psum3Indicating the sum of the charging powers of the remaining charging posts,and the charging power of the ith charging pile is shown.
S32, pre-allocating the charging power of the charging pile stopping charging to the rest charging piles as its additional compensation power based on the calculated weight, as shown in the following formula:
wherein, PoutIndicates the charging power of the charging post stopping charging,and indicating the pre-distribution power of the ith charging pile.
S33, adding the charging power and the extra compensation power of each charging pile to obtain pre-distribution power, if the pre-distribution power of the charging pile exceeds the rated power of a gun of the charging pile, marking the charging pile as a power reduction charging pile, and taking the exceeding power as the reserved power of the power reduction charging pile; if the pre-distribution power of the charging pile is smaller than the rated power of a gun of the electric pile, the charging pile is marked as a power charging pile;
s34, if the power reducing charging piles exist, accumulating the reserved power of all the power reducing charging piles to obtain total reserved power, sequentially distributing the total reserved power to each power charging pile according to the sequence that the priority is sequentially reduced to enable the pre-distributed power to reach the rated power or the total reserved power to be completely distributed, and turning to the step S1; wherein, the priority of each charging pile reduces according to the order of starting to charge in proper order.
Continuing with the above example, assuming that the total pre-allocated power is determined to be within the available total rated power in step S27, the final charging powers of the charging piles nos. 1-4 are the adjusted pre-allocated powers thereof respectively: 5Kw, 4.16Kw, 4Kw, 2.5 Kw. If the charging of the charging post No. 4 is stopped, the sum P of the charging powers of the remaining charging posts No. 1-3 is determined according to step S31sum3When 5Kw +4.16Kw +4Kw is 13.16Kw, the weights are: 5Kw/13.16Kw, 4.16Kw/13.16Kw, 4Kw/13.16 Kw; according to step S32, the extra compensation power of the charging pile nos. 1-3 is: 2.5 ═ 0.94, (4.16/13.16) ═ 0.79, (2.5 ═ 0.75, (4/13.16) ═ 0.79; the pre-distribution power of the charging piles No. 1-3 is respectively as follows: 5.94, 4.95, 4.75; then, step S33 is executed, if the rated power of the No. 1-3 charging pile is 6Kw,5Kw and 5Kw, the charging piles No. 1-3 do not reach the rated power, and the pre-distribution power does not need to be readjusted, so step S34 does not need to be executed.
Preferably, the invention can also increase more support and realize more flexible regulation and control strategies by arranging the common card and the member card as well as the common charging pile and the member charging pile.
The charging station preferentially distributes required power for the member charging piles, and the residual power after distribution is used as the available total rated power of the common charging piles; the common charging pile is effective to both the common card and the membership card, and the membership charging pile is only effective to the membership card;
wherein, fill electric pile's priority and satisfy following two standards simultaneously: the priority of the common charging pile corresponding to the membership card is higher than that of the common charging pile corresponding to the common card; the priority of the common charging piles corresponding to the same type of cards is reduced in sequence according to the charging starting sequence.
After the power is successfully regulated and controlled, one command can be used for sending broadcasts to the charging piles one by one during charging, and the charging piles can ensure that the power is set only by replying the received command after the adjustment is successful.
Correspondingly, the invention also discloses a charging station power automatic regulation and control system, which comprises:
the monitoring unit is used for monitoring the running states of all charging piles of the charging station in real time;
the first regulating and controlling unit is used for calculating the total charging power of charging piles which are charged and started to be charged when a certain charging pile starts to be charged, if the total charging power is within a regulating and controlling power threshold value, distributing the rated power of a gun corresponding to the charging pile which is started to be charged, otherwise, pre-distributing the charging power of all the charging piles which are charged to the charging piles which are charged and started to be charged, and regulating and outputting the pre-distributed power according to the lowest power and the available total rated power of the guns of all the charging piles;
and the second regulation and control unit is used for pre-distributing the charging power of the charging pile which stops charging to other charging piles which are charging when a certain charging pile stops charging, and outputting the pre-distributed power after adjusting the pre-distributed power according to the rated power of the gun of each charging pile which is charging.
In summary, the method and the system for automatically regulating and controlling the power of the charging station have the following advantages: the regulation and control method provided by the invention is directly operated in a monitoring system without additional power device hardware, and is low in cost and environment-friendly; according to the invention, the running state of the charging pile is monitored in real time, the power distribution of the charging pile is adjusted according to the total charging power during charging, and the power distribution of the charging pile is optimized when a certain charging pile stops charging, so that the capacity of the charging station is larger, and the problem of resource shortage of the charging station can be alleviated; based on this, the charger load is in the transformer capacity range for the vast majority of time, and full load work rarely occurs, resulting in the condition of exceeding the distribution system load and jumping electricity.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (9)
1. A charging station power automatic regulation and control method is characterized by comprising the following steps:
s1, monitoring the running states of all charging piles of the charging station in real time, executing the step S2 if a certain charging pile starts charging, and executing the step S3 if a certain charging pile stops charging;
s2, calculating the total charging power of the charging piles which are charged and started to be charged, if the total charging power is within a regulation power threshold value, distributing the rated power of the corresponding gun to the charging pile which is started to be charged and turning to S1, otherwise, pre-distributing the charging power of all the charging piles which are charged to the charging piles which are charged and started to be charged, adjusting the pre-distributed power according to the lowest power and the available total rated power of the guns of all the charging piles and then outputting the adjusted pre-distributed power, and turning to S1;
s3, pre-distributing the charging power of the charging pile stopping charging to the rest charging piles, adjusting the pre-distributed power according to the rated power of the gun of each charging pile and outputting the adjusted pre-distributed power, and turning to the step S1;
wherein the step S2 includes:
s21, regarding the rated power of the gun of the charging pile for starting charging as the charging power of the charging pile, and accumulating the charging power of the charging piles for starting charging and charging to obtain the total charging power;
s22, if the total charging power is within the regulation power threshold value, maintaining the charging power of each charging pile which is being charged unchanged, distributing the rated power of the corresponding gun for the charging pile which starts charging and turning to the step S1, otherwise, executing the step S23;
s23, calculating the weight of each charging pile based on the total charging power and the charging power of each charging pile;
s24, pre-distributing the charging power of all charging piles which are already charged to the charging piles which are already charged and start charging based on the calculated weight to obtain the pre-distributed power of each charging pile;
s25, adjusting pre-distributed power according to the lowest power of the guns of the charging piles;
s26, calculating the total pre-distribution power of all the charging piles after adjustment, if the total pre-distribution power exceeds the available total rated power, executing a step S27, otherwise, turning to a step S1;
s27, adjusting the pre-distribution power of the charging piles according to the priority and the lowest power of the charging piles until the total pre-distribution power of all the charging piles after adjustment does not exceed the available total rated power, and turning to the step S1.
2. The charging station power automatic regulation method according to claim 1,
calculating the weight of the charging pile based on the following formula (1) in the step S23;
in the step S24, the pre-allocated power of the charging pile is calculated based on the following formula (2):
wherein N is a positive integer and represents the total number of charging piles which are already being charged and start charging; wiRepresents the weight of the ith charging pile,represents the charging power of the ith charging pile, Psum1Represents the total charging power in step S21,indicating the pre-allocated power, P, of the ith charging pilesum2Indicating the sum of the charging powers of the charging posts that are already charging.
3. The charging station power automatic regulation method according to claim 1, wherein the step S25 includes: and for each charging pile, comparing the lowest power of the gun of the charging pile with the distributed pre-distributed power, and if the distributed pre-distributed power is lower than the lowest power of the gun, adjusting the pre-distributed power of the charging pile to be the lowest power of the gun.
4. The charging station power automatic regulation method according to claim 1, wherein the step S27 includes: and setting the pre-distribution power of the charging piles as the lowest power of the guns corresponding to the charging piles according to the sequence that the priority is sequentially increased until the total pre-distribution power of all the adjusted charging piles does not exceed the available total rated power, wherein the priority of each charging pile is sequentially decreased according to the sequence of starting charging.
5. The charging station power automatic regulation method according to claim 1, wherein the step S3 includes:
s31, calculating the weight of each charging pile based on the charging power of the rest charging piles;
s32, pre-distributing the charging power of the charging pile stopping charging to the rest charging piles as the additional compensation power of the charging piles based on the calculated weight;
s33, adding the charging power and the extra compensation power of each charging pile to obtain pre-distribution power, if the pre-distribution power of the charging pile exceeds the rated power of a gun of the charging pile, marking the charging pile as a power reduction charging pile, and taking the exceeding power as the reserved power of the power reduction charging pile; if the pre-distribution power of the charging pile is smaller than the rated power of a gun of the charging pile, the charging pile is marked as a power charging pile;
s34, if the power reducing charging piles exist, accumulating the reserved power of all the power reducing charging piles to obtain total reserved power, sequentially distributing the total reserved power to each power charging pile according to the sequence that the priority is sequentially reduced to enable the pre-distributed power to reach the rated power or the total reserved power to be completely distributed, and turning to the step S1; wherein, the priority of each charging pile reduces according to the order of starting to charge in proper order.
6. The charging station power automatic regulation method according to claim 5,
calculating the weight of the charging pile based on the following formula (3) in the step S31;
in the step S32, the pre-allocated power of the charging pile is calculated based on the following formula (4):
wherein M is an integer greater than zero and represents the total number of the rest charging piles being charged; wiRepresents the weight of the ith charging pile, Psum3Indicating the sum of the charging powers of the remaining charging posts,represents the charging power of the ith charging pile, PoutIndicates the charging power of the charging post stopping charging,and indicating the pre-distribution power of the ith charging pile.
7. The charging station power automatic regulation method according to claim 1, further comprising conditional step S0 before the step S1: the status of the charging card is verified, and step S1 is executed when the card number of the charging card is legal and the balance is sufficient.
8. The method for automatically regulating and controlling power of the charging station according to claim 7, wherein the charging cards comprise two types of ordinary cards and member cards, and the charging piles comprise ordinary charging piles and member charging piles;
the charging station preferentially distributes required power for the member charging piles, and the residual power after distribution is used as the available total rated power of the common charging piles; the common charging pile is effective to both the common card and the membership card, and the membership charging pile is only effective to the membership card;
wherein, fill electric pile's priority and satisfy following two standards simultaneously: the priority of the common charging pile corresponding to the membership card is higher than that of the common charging pile corresponding to the common card; the priority of the common charging piles corresponding to the same type of cards is reduced in sequence according to the charging starting sequence.
9. A charging station power automatic regulation and control system based on the charging station power automatic regulation and control method of claim 1, characterized by comprising
The monitoring unit is used for monitoring the running states of all charging piles of the charging station in real time;
the first regulating and controlling unit is used for calculating the total charging power of charging piles which are charged and started to be charged when a certain charging pile starts to be charged, if the total charging power is within a regulating and controlling power threshold value, distributing the rated power of a gun corresponding to the charging pile which is started to be charged, otherwise, pre-distributing the charging power of all the charging piles which are charged to the charging piles which are charged and started to be charged, and regulating and outputting the pre-distributed power according to the lowest power and the available total rated power of the guns of all the charging piles;
and the second regulation and control unit is used for pre-distributing the charging power of the charging pile which stops charging to other charging piles which are charging when a certain charging pile stops charging, and outputting the pre-distributed power after adjusting the pre-distributed power according to the rated power of the gun of each charging pile which is charging.
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| JP7255838B2 (en) * | 2017-10-27 | 2023-04-11 | サイバースイッチングパテンツ， エルエルシー | Electric vehicle charging system, controller and method with priority charging |
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