CN108899891A - A kind of the DC charging facility charge control method and system of voltage ripple of power network - Google Patents
A kind of the DC charging facility charge control method and system of voltage ripple of power network Download PDFInfo
- Publication number
- CN108899891A CN108899891A CN201810545611.2A CN201810545611A CN108899891A CN 108899891 A CN108899891 A CN 108899891A CN 201810545611 A CN201810545611 A CN 201810545611A CN 108899891 A CN108899891 A CN 108899891A
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- user
- charge
- charging
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Classifications
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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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/008—Circuit arrangements for ac mains or ac distribution networks involving trading of energy or energy transmission rights
-
- 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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/24—Arrangements for preventing or reducing oscillations of power in networks
-
- 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
- H02J7/0071—Regulation of charging or discharging current or voltage with a programmable schedule
Abstract
The present invention provides the DC charging facility charge control method and system of a kind of voltage ripple of power network, including：Obtain preset user's charging priority；Charge power is adjusted based on user's charging priority；It is charged according to charge power adjusted.By in DC charging facility constant current-constant pressure fast charge control method; introduce network voltage index; charger over-voltage, overcurrent protection action frequency caused by large-scale direct current electrically-charging equipment charges because of voltage ripple of power network are reduced, principle is simple, has good operability.It is effectively controlled network voltage, makes network voltage that can promote the charging satisfaction of user with itself adjusting.
Description
Technical field：
The invention belongs to new energy detection fields, and in particular to a kind of DC charging facility charging control of voltage ripple of power network
Method and system processed.
Background technique：
Energy crisis and increasingly sharpening for environmental pollution promote electric car fast-developing.It is fast with electric car quantity
Speed increases, and being incorporated into the power networks for large-scale direct current electrically-charging equipment unavoidably affects power grid.For power grid, DC charging
Facility is equivalent to constant power source, when network voltage decline, if DC charging facility power is constant without control, and power grid electricity
Stream rises, and system impedance pressure drop increases, and network voltage can further decline, until overcurrent protection acts；Similarly, work as network voltage
When rising, if network voltage will persistently rise without control, until system overvoltage protection can act.
Currently constant current-constant pressure is concentrated mainly on about the research of electrically-charging equipment charge control method.When network voltage is held
When continuous fluctuation, if electric system regulating power itself is weak, the overvoltage protection of DC charging facility or overcurrent protection will be acted, and be led
Charging failure is caused, and reduces the charging satisfaction of automobile user.
Summary of the invention：
In order to overcome drawbacks described above, the present invention provides a kind of DC charging facility charge control sides of voltage ripple of power network
Method, the method includes：
Obtain preset user's charging priority；
Charge power is adjusted based on user's charging priority；
It is charged according to charge power adjusted.
Preferably, the setting of user's charging priority, including：
According to charge volume set by user and charging time, Subscriber Unit time charge volume is calculated；
According to the Subscriber Unit time charge volume, user's charging priority is determined；
Wherein, user's charging priority is from high to low：Fast charge user, medium user and trickle charge user.
Preferably, described that charge power is adjusted based on user's charging priority, including：
At this point, increasing the charging function of electrically-charging equipment based on user's charging priority when the network voltage detected is increased
Rate reduces the charge power of electrically-charging equipment based on user's charging priority, until power grid when the network voltage detected is reduced
Voltage restores normal.
Preferably, described that charge power is adjusted based on user's charging priority, further include before：
Judge whether network voltage fluctuates.
Preferably, described to judge whether network voltage fluctuates, including：
If the network voltage of monitoring persistently exceeds preset network voltage index prescribed limit, and the time exceeded reaches
When setting time range, the network voltage is fluctuated.
Preferably, described when the network voltage detected increases, electrically-charging equipment is increased based on user's charging priority
Charge power, including：
It when the network voltage detected increases, keeps fast charge user charge power constant, promotes medium user and trickle charge
The charge power of user is until become the corresponding charge power of fast charge user.
Preferably, described when the network voltage detected reduces, electrically-charging equipment is reduced based on user's charging priority
Charge power, including：
When the network voltage detected reduces, the charge power of fast charge user and medium user are reduced, until becoming slow
The corresponding charge power of user is filled, the charge power for reducing trickle charge user is rushed until stopping.
A kind of DC charging facility charge control system of voltage ripple of power network, the system comprises：
Obtain module：For obtaining preset user's charging priority；
Adjust module：For adjusting charge power based on user's charging priority；
Charging module：For being charged according to charge power adjusted.
Preferably, further include：Charging priority module；
For calculating Subscriber Unit time charge volume according to charge volume set by user and charging time；And according to institute
Subscriber Unit time charge volume is stated, determines user's charging priority；
Wherein, user's charging priority is from high to low：Fast charge user, medium user and trickle charge user.
Preferably, the adjustment module, including：Monitor submodule and adjustment power modules；
The monitoring submodule, for monitoring network voltage during the charging process
The adjustment power modules, for being increased based on user's charging priority when the network voltage detected increases
The charge power for adding electrically-charging equipment reduces electrically-charging equipment based on user's charging priority when the network voltage detected is reduced
Charge power, until network voltage restores normal.
Compared with prior art, the present invention has the advantages that：
1, a kind of DC charging facility charge control method of voltage ripple of power network provided by the invention, acquisition are preset
User's charging priority；Charge power is adjusted based on user's charging priority；It is carried out according to charge power adjusted
Charging.It is effectively controlled network voltage, makes network voltage that can promote the charging satisfaction of user with itself adjusting.
2, the DC charging facility charge control method of a kind of voltage ripple of power network provided by the invention, by being filled in direct current
In electric facility constant current-constant pressure fast charge control method, network voltage index is introduced, reduces the charging of large-scale direct current electrically-charging equipment because of electricity
Charger over-voltage caused by net voltage fluctuation, overcurrent protection action frequency, principle is simple, has good operability.
Detailed description of the invention：
Fig. 1 is DC charging facility charge control method implementation steps flow chart of the invention；
Fig. 2 is DC charging facility charge control strategic process figure of the invention.
Specific embodiment：
For a better understanding of the present invention, following will be combined with the drawings in the embodiments of the present invention, in the embodiment of the present invention
Technical solution be clearly and completely described, it is clear that described embodiments are some of the embodiments of the present invention, rather than
Whole embodiments.
Embodiment 1
The present invention provides a kind of DC charging facility charge control method of voltage ripple of power network, by setting to DC charging
Introducing network voltage index in constant current-constant-voltage charge strategy is applied, DC charging facility caused by reducing because of voltage ripple of power network is protected
Action frequency is protected, DC charging facility charging reliability is improved.
The DC charging facility charge control method of voltage ripple of power network as shown in Figure 1 is as follows：
Step 1：Obtain preset user's charging priority；
Step 2：Charge power is adjusted based on user's charging priority；
Step 3：It is charged according to charge power adjusted.
DC charging facility charge control strategic process figure as shown in Figure 2, specific method step are explained as follows：
Step 1：Obtain preset user's charging priority；
According to DC charging facility charge volume set by user and charging time, Subscriber Unit time charge volume is calculated, and
According to the numerical value, user's charging priority is determined；
Using the charge user priority level highest of specified charging current fast charge；Using the charging for being lower than rated current fast charge
The priority level of user is placed in the middle；It is minimum using the charge user priority level of trickle charge.
Wherein, user's charging priority is from high to low：Fast charge user, medium user and trickle charge user；It is described fast
The charge power for filling user is maximum, and the charge power of trickle charge user is minimum.
Step 2：Charge power is adjusted based on user's charging priority；
Real-time monitoring network voltage is sentenced when network voltage continuously exceeds network voltage prescribed limit within a certain period of time
Determine network voltage to fluctuate；
When network voltage increases, for the charge user of highest priority, charging current is maintained, constant current-constant pressure is kept to fill
Electricity；The charge user medium to priority level promotes constant current-constant-voltage charge strategy charging current；It is low for priority level
Charge user promote trickle charge electric current, until trickle charge becomes faster and fills.When network voltage reduces, the charging of highest priority is used
Family reduces charging current, keeps constant-current constant-voltage charging；The charge user medium for priority level, charging strategy are become by fast charge
Trickle charge；The charge user low for priority level reduces trickle charge electric current, until stopping filling；
Step 3：It is charged according to charge power adjusted；
Network voltage index is introduced in charging strategy, when network voltage reduces, reduces the charging function of electrically-charging equipment group
Rate；When network voltage rises, increase the charge power of electrically-charging equipment group.
When network voltage increases, for the charge user of highest priority, charging current is maintained, constant current-constant pressure is kept to fill
Electricity；The charge user medium to priority level promotes constant current-constant-voltage charge strategy charging current；It is low for priority level
Charge user promote trickle charge electric current, until trickle charge becomes faster and fills.When network voltage reduces, the charging of highest priority is used
Family reduces charging current, keeps constant-current constant-voltage charging；The charge user medium for priority level, charging strategy are become by fast charge
Trickle charge；The charge user low for priority level reduces trickle charge electric current, until stopping filling；
It is charged according to charging strategy adjusted to user's electrically-charging equipment, until power grid is back to normal.
Embodiment 2
It is invented based on same design, the present invention also provides a kind of DC charging facility charge control systems of voltage ripple of power network
System, the system comprises：
Obtain module：For obtaining preset user's charging priority；
Adjust module：For adjusting charge power based on user's charging priority；
Charging module：For being charged according to charge power adjusted.
Preferably, further include：Charging priority module；
For calculating Subscriber Unit time charge volume according to charge volume set by user and charging time；And according to institute
Subscriber Unit time charge volume is stated, determines user's charging priority；
Wherein, user's charging priority is from high to low：Fast charge user, medium user and trickle charge user.
Preferably, the adjustment module, including：
For increasing the charging function of electrically-charging equipment based on user's charging priority when the network voltage detected increases
Rate reduces the charge power of electrically-charging equipment based on user's charging priority, until power grid when the network voltage detected is reduced
Voltage restores normal.
It should be understood by those skilled in the art that, embodiments herein can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the application, which can be used in one or more,
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces
The form of product.
The application is flow chart and side of the reference according to the method for the embodiment of the present application, system and computer program product
Block diagram describes.It should be understood that each process and box that can be realized by computer program instructions in flow chart and block diagram, with
And the combination of the process and box in flow chart and block diagram.Can provide these computer program instructions to general purpose computer, specially
With the processor of computer, Embedded Processor or other programmable data processing devices to generate a machine, so that passing through
The instruction that computer or the processor of other programmable data processing devices execute generates for realizing in one process of flow chart
Or the device for the function of being specified in multiple processes and one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
The manufacture of device is enabled, which realizes in one box of one or more flows of the flowchart and block diagram or multiple
The function of being specified in box.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and one, block diagram
The step of function of being specified in box or multiple boxes.
The above is only the embodiment of the present invention, are not intended to restrict the invention, all in the spirit and principles in the present invention
Within, any modification, equivalent substitution, improvement and etc. done, be all contained in apply pending scope of the presently claimed invention it
It is interior.
Claims (10)
1. a kind of DC charging facility charge control method of voltage ripple of power network, which is characterized in that the method includes：
Obtain preset user's charging priority；
Charge power is adjusted based on user's charging priority；
It is charged according to charge power adjusted.
2. the DC charging facility charge control method of voltage ripple of power network as described in claim 1, which is characterized in that described
The setting of user's charging priority, including：
According to charge volume set by user and charging time, Subscriber Unit time charge volume is calculated；
According to the Subscriber Unit time charge volume, user's charging priority is determined；
Wherein, user's charging priority is from high to low：Fast charge user, medium user and trickle charge user.
3. the DC charging facility charge control method of voltage ripple of power network as described in claim 1, which is characterized in that described
Charge power is adjusted based on user's charging priority, including：
At this point, increase the charge power of electrically-charging equipment based on user's charging priority when the network voltage detected is increased, when
When the network voltage detected reduces, the charge power of electrically-charging equipment is reduced based on user's charging priority, until network voltage
Restore normal.
4. the DC charging facility charge control method of voltage ripple of power network as claimed in claim 3, which is characterized in that described
Charge power is adjusted based on user's charging priority, further includes before：
Judge whether network voltage fluctuates.
5. the DC charging facility charge control method of voltage ripple of power network as claimed in claim 4, which is characterized in that described
Judge whether network voltage fluctuates, including：
If the network voltage of monitoring persistently exceeds preset network voltage index prescribed limit, and the time exceeded reaches setting
When time range, the network voltage is fluctuated.
6. the DC charging facility charge control method of voltage ripple of power network as claimed in claim 3, which is characterized in that described
When the network voltage detected increases, increase the charge power of electrically-charging equipment based on user's charging priority, including：
It when the network voltage detected increases, keeps fast charge user charge power constant, promotes medium user and trickle charge user
Charge power until become the corresponding charge power of fast charge user.
7. the DC charging facility charge control method of voltage ripple of power network as claimed in claim 3, which is characterized in that described
When the network voltage detected reduces, the charge power of electrically-charging equipment is reduced based on user's charging priority, including：
When the network voltage detected reduces, the charge power of fast charge user and medium user are reduced, until becoming trickle charge use
The corresponding charge power in family, the charge power for reducing trickle charge user are rushed until stopping.
8. a kind of DC charging facility charge control system of voltage ripple of power network, which is characterized in that the system comprises：
Obtain module：For obtaining preset user's charging priority；
Adjust module：For adjusting charge power based on user's charging priority；
Charging module：For being charged according to charge power adjusted.
9. the DC charging facility charge control system of voltage ripple of power network as claimed in claim 8, which is characterized in that also wrap
It includes：Charging priority module；
For calculating Subscriber Unit time charge volume according to charge volume set by user and charging time；And according to the use
Family unit time charge volume, determines user's charging priority；
Wherein, user's charging priority is from high to low：Fast charge user, medium user and trickle charge user.
10. the DC charging facility charge control system of voltage ripple of power network as claimed in claim 8, which is characterized in that institute
Adjustment module is stated, including：Monitor submodule and adjustment power modules；
The monitoring submodule, for monitoring network voltage during the charging process；
The adjustment power modules, for being filled based on user's charging priority increase when the network voltage detected increases
The charge power of electric facility reduces filling for electrically-charging equipment based on user's charging priority when the network voltage detected is reduced
Electrical power, until network voltage restores normal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810545611.2A CN108899891A (en) | 2018-05-25 | 2018-05-25 | A kind of the DC charging facility charge control method and system of voltage ripple of power network |
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| CN201810545611.2A CN108899891A (en) | 2018-05-25 | 2018-05-25 | A kind of the DC charging facility charge control method and system of voltage ripple of power network |
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