CN107359625A - A kind of charging device of electric automobile and method with dynamic frequency function - Google Patents
A kind of charging device of electric automobile and method with dynamic frequency function Download PDFInfo
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- CN107359625A CN107359625A CN201710601285.8A CN201710601285A CN107359625A CN 107359625 A CN107359625 A CN 107359625A CN 201710601285 A CN201710601285 A CN 201710601285A CN 107359625 A CN107359625 A CN 107359625A
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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
- H02J3/24—Arrangements for preventing or reducing oscillations of power in networks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L55/00—Arrangements for supplying energy stored within a vehicle to a power network, i.e. vehicle-to-grid [V2G] arrangements
-
- 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
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/12—Electric charging stations
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
Abstract
The present invention proposes a kind of charging device of electric automobile and method with dynamic frequency function, it includes frequency detection module and response module, and ultra-short term prediction module, the input of the frequency detection module electrically connects with access power network, the output end of the frequency detection module is connected by ultra-short term prediction module with the response module, the response module electrically connects with batteries of electric automobile group, the variation tendency of following power network is analyzed by ultra-short term prediction module, when the frequency departure of prediction and the difference of the frequency departure of detection are in certain threshold interval, just determine that testing result is effective, improve the reasonable fidelity that mains frequency changes testing result, add the reliability of frequency response.
Description
Technical field
The present invention relates to electric field, more particularly to a kind of charging device of electric automobile and side with dynamic frequency function
Method.
Background technology
The birth of V2G technologies, electric automobile and power grid energy and the two-way exchange of information are realized, makes electric automobile no longer only
Only it is an electricity usage person, an even more positive participant.By rational control strategy, electric automobile discharge and recharge is entered
The appropriate adjustment of row and control, realize the two-way interaction of energy between power network and user so that electric power supply system is more stable, more may be used
Lean on, improve the quality of power supply and its performance driving economy of power network.
Electric automobile participates in power grid frequency modulation, mainly including upward frequency modulation and downward two kinds of mode of frequency regulations of frequency modulation.Upward frequency modulation
Mode refers to electric automobile to power network loopback power；Downward mode of frequency regulation is then electric automobile to power network absorbed power.Electronic vapour
The operational mode of car is generally divided into three kinds：Controllable burden pattern, the charge power of electric automobile can be controlled；Neutral pattern, it is electronic
Automobile is connected with power network but does not have a Power Exchange；The energy of storage is returned to power network by power generation mode, electric automobile.Electric automobile
According to the running situation of current electric grid, the quick adjustment of charge-discharge electric power is realized by changing the operational mode of electric automobile,
So as to prevent the decline of frequency or rise, the receiving ability of power network safety operation and new energy is improved.
If patent publication No. is CN103762688A, patent name is a kind of charging equipment of electric automobile dynamic response power network
In the patent document of the device of frequency, the frequency response control module of disclosed charging equipment of electric automobile device is by power network frequency
Rate rate of change is divided into n grade, and response threshold of response module is set into n grade, different response thresholds with this
Corresponding different control strategy, and then corresponding different charged state.When exception occurs for mains frequency or i.e. exception will occur,
If the frequency shift (FS) of monitoring reaches EV (electric automobile) frequency response action threshold value, now EV (electric automobile) is according to itself
SOC (state-of-charge) judge whether to be adapted to the frequency response for participating in power network, if be adapted to participate in if according to response control plan
Slightly carry out frequency response；If SOC (state-of-charge) is not suitable for current response action, in idle state, until next
Monitoring cycle T, repeat last round of control action；If during non-frequency of occurrences exception, EV (electric automobile) then keeps normal charging
State；A mains frequency is monitored every some cycles T, according to the rate of change of mains frequency, the variation tendency of determination frequency, is determined
Determine the charged state or charge power size of electric automobile.
The frequency response of above-mentioned technical proposal acts the parameters such as threshold value, response amplitude, sampling period and all immobilized,
When mains frequency occurs that abnormal or i.e. exception will occur, mains frequency rate of change and the frequency response action threshold value that closes on it
Between interval can cause certain delay, so as to cause the further delay of response module response action, be unfavorable for quick
Agree with power grid frequency modulation demand in ground, it is impossible to the timely and effective risk for reducing power grid environment and continuing to deteriorate.
The content of the invention
The technical problem to be solved in the present invention is：There is provided a kind of charging device of electric automobile with dynamic frequency function and
Method, its fast response time, it can effectively reduce the risk that power grid environment continues to deteriorate, quickly improve power grid environment.
What the solution of the present invention was realized in：A kind of charging device of electric automobile with dynamic frequency function,
Including frequency detection module and response module, wherein, in addition to ultra-short term prediction module, the frequency detection module it is defeated
Enter end to electrically connect with access power network, the output end of the frequency detection module passes through ultra-short term prediction module and the response control
Module connects, and the response module electrically connects with batteries of electric automobile group；
The frequency detection module is used for the real-time change for detecting mains frequency and by sample frequency data transfer to ultrashort
Phase prediction module；
The frequency change that the ultra-short term prediction module is used within following several seconds to mains frequency is predicted, and will be pre-
Measured frequency delta data is delivered to response module；
After the response module receives the prediction frequency variation data of ultra-short term prediction module transmission, by data
Processing, if judging the trend that mains frequency changes, response module is rung according to the dynamic adjustment of mains frequency variation tendency
Answer threshold value.
Another technical scheme of the present invention is on above-mentioned basis, when the response module judges mains frequency
Have when trend that exception or frequency departure become big occurs, then reduce the threshold value of the action per one-level；Or when the response control
When molding block judges that mains frequency deviation has the trend progressively alleviated, then the threshold of electric automobile response action per one-level is improved
Value.
Another technical scheme of the present invention is that on above-mentioned basis it is pre- that the response module receives ultra-short term
After surveying the prediction frequency variation data that module is sent, by data processing, if judging the trend that mains frequency changes, the sound
Control module is answered according to mains frequency variation tendency dynamic adjustment response amplitude.
Another technical scheme of the present invention is on above-mentioned basis, when the response module judges mains frequency
Have when trend that exception or frequency departure become big occurs, increase response amplitude in each threshold grade；When the response control
When molding block judges that mains frequency deviation has the trend progressively alleviated, response amplitude in each threshold grade is reduced.
Another technical scheme of the present invention is that on above-mentioned basis the response module is provided with dynamic response
Button and manual control button.
The present invention another technical scheme be it is above-mentioned basis on, the response module also with alarm and show
Show that device electrically connects, when response module detects and confirms frequency departure rated value, response module provides alarm signal
Number, alarm starts to alarm；The display display frequency deviation and frequency change rate information.
Another technical scheme of the present invention is on above-mentioned basis, additionally provides a kind of with dynamic frequency function
Charging electric vehicle method, comprises the following steps：
S01, mains frequency detect, and detect the real-time change of mains frequency；
S02, mains frequency variation prediction, the frequency change within several seconds of future of mains frequency is predicted；
S03, response control, when judging trend that mains frequency changes, then according to mains frequency variation tendency dynamic
Adjustment response threshold value.
Another technical scheme of the present invention is that on above-mentioned basis the step S03 is specifically, when the response is controlled
Molding block judges that mains frequency has when trend that exception or frequency departure become big occurs, then reduces the threshold of the action per one-level
Value；Or when the response module judges that mains frequency deviation has the trend progressively alleviated, then improve electric automobile and ring
The threshold value that should be acted per one-level.
Another technical scheme of the present invention is that on above-mentioned basis the step S03 also includes, when the response control
After molding block receives the prediction frequency variation data of ultra-short term prediction module transmission, by data processing, if judging power network frequency
The trend that rate changes, then response module is according to mains frequency variation tendency dynamic adjustment response amplitude.
Another technical scheme of the present invention is that on above-mentioned basis the step S03 is specifically, when the response is controlled
Molding block judges that mains frequency has when trend that exception or frequency departure become big occurs, and increases in each threshold grade and responds
Amplitude；When the response module judges that mains frequency deviation has the trend progressively alleviated, each threshold grade is reduced
Interior response amplitude.
Another technical scheme of the present invention is that on above-mentioned basis the step S03 is specifically, when the response is controlled
Molding block judges that mains frequency has when trend that exception or frequency departure become big occurs, and reduces the threshold value of the action per one-level simultaneously
Increase response amplitude in each threshold grade；When the response module judges that mains frequency deviation has what is progressively alleviated to become
During gesture, improve the threshold value that electric automobile response acts per one-level and reduce response amplitude in each threshold grade.
Another technical scheme of the present invention is on above-mentioned basis, the response control step, including automatic dynamic
Response and artificial dynamic response both of which.
This patent has the beneficial effect that：Charging device of electric automobile with dynamic frequency function and side described in this patent
Method, it analyzes the variation tendency of following power network by ultra-short term prediction module, when the frequency departure and the frequency of detection of prediction are inclined
The difference of difference just determines that testing result is effective, improves the conjunction that mains frequency changes testing result in certain threshold interval
Confidence level is managed, adds the reliability of frequency response；Moreover, present patent application adjusts according to mains frequency variation tendency, dynamic
The response action threshold value of electric automobile and corresponding amplitude and the sample frequency to mains frequency detection, it is specifically, each
The threshold value setting of level is influenceed by mains frequency variation tendency, when mains frequency has generation exception or frequency departure to become big and become
During gesture, the threshold value of the action per one-level is reduced so that electric automobile can improve power grid environment with quick response；Work as mains frequency
When deviation has the trend progressively alleviated, the threshold value of electric automobile response action per one-level is improved；Or when mains frequency has hair
When raw exception or frequency become big trend partially, increase response amplitude in each threshold grade, faster to improve power network
Environment；When mains frequency deviation has the trend progressively alleviated, response amplitude in each threshold grade is reduced；Or work as power network
When frequency has the trend that exception occurs, increase sample frequency, rather than just go to increase after monitoring abnormal frequency；Improve response
Speed, so as to the change of charging equipment of electric automobile dynamic response mains frequency, reach the effect of fast frequency hopping, effectively improve electricity
The stability of net frequency.Further, except response action threshold value, outside the amplitude and sample frequency of response, other parameters
Setting is also influenceed and dynamic change by mains frequency variation tendency.
Brief description of the drawings
The accompanying drawing for forming the part of the present invention is used for providing a further understanding of the present invention, schematic reality of the invention
Apply example and its illustrate to be used to explain the present invention, do not form inappropriate limitation of the present invention.
The structure for the charging device of electric automobile with dynamic frequency function being related in Fig. 1 one embodiment of the present invention
Block diagram；
The flow for the charging electric vehicle method with dynamic frequency function being related in Fig. 2 one embodiment of the present invention
Figure.
Embodiment
The present invention will be described in detail below in conjunction with the accompanying drawings, and the description of this part is only exemplary and explanatory, should not
There is any restriction effect to protection scope of the present invention.In addition, description of the those skilled in the art according to this document, can be right
Feature in this document in embodiment and in different embodiments carries out respective combination.
Term " first ", " second ", " the 3rd " " in description and claims of this specification and above-mentioned accompanying drawing
The (if present)s such as four " are for distinguishing similar object, without for describing specific order or precedence.It should manage
The data that solution so uses can exchange in the appropriate case, so as to embodiments of the invention described herein, such as can be with
Order in addition to those for illustrating or describing herein is implemented.In addition, term " comprising " and " having " and their times
What deform, it is intended that cover it is non-exclusive include, for example, contain the process of series of steps or unit, method, system,
Product or equipment are not necessarily limited to those steps clearly listed or unit, but may include not list clearly or for
The intrinsic other steps of these processes, method, product or equipment or unit.
The embodiment of the present invention is as follows, refers to Fig. 1, a kind of charging device of electric automobile with dynamic frequency function, bag
Frequency monitoring module 2, ultra-short term prediction module 3 and response module 4 are included, wherein, the input of frequency detection module 2 is with connecing
Enter power network 1 to electrically connect, the output end of frequency detection module 2 is connected by ultra-short term prediction module 3 and the response module 4
Connect, the response module 4 is connected with batteries of electric automobile group 5；Frequency monitoring module 2 is used for detecting the real-time of mains frequency
Change and by sample frequency data transfer to ultra-short term prediction module 3, ultra-short term prediction module 3 to several seconds of future of mains frequency it
Interior frequency change is predicted, if trend or generation that mains frequency changes are abnormal, response module 4 becomes according to frequency
Change trend dynamic adjusts different response threshold value and/or response amplitude：Exception or frequency departure occurs when mains frequency has
When becoming big trend, the threshold value of the action per one-level is reduced so that electric automobile can adjust charged state with quick response, from
And meet frequency modulation requirement, the fast quick-recovery normal operating level of power network is assisted, improves power grid environment；When mains frequency deviation has progressively
During the trend of alleviation, the threshold value of electric automobile response action per one-level is improved；According to the trend adjust automatically of frequency variation electricity
The amplitude of electrical automobile response：When mains frequency has generation exception or frequency departure becomes big trend, increase each threshold
Response amplitude in grade；When mains frequency deviation has the trend progressively alleviated, response amplitude in each threshold grade is reduced.
Preferably, response module 4 has two buttons of dynamic response and manual control, when selection dynamic sound button, by charging
Control electric automobile to participate in power grid frequency modulation equipment autonomously；When selecting manual control button, if charging equipment determines after testing
Exception occurs for mains frequency, then runs through warning device 7 and remind whether user participates in power grid frequency modulation, subsequently controlled by user
System operation；Display 6 is used for the information such as display frequency change curve and frequency departure.
On the basis of above-described embodiment, in another embodiment of the present invention, when the response module judges power network frequency
Rate has when trend that exception or frequency departure become big occurs, then reduces the threshold value of action per one-level and increase each threshold
Response amplitude in grade；Or when the response module judges that mains frequency deviation has the trend progressively alleviated, then carry
High electric automobile responds the threshold value of action per one-level and reduces response amplitude in each threshold grade.Alternatively, it is also possible to
Judge the trend that mains frequency changes, then response module is adjusted to mains frequency according to mains frequency variation tendency dynamic
The sample frequency of detection.Specifically, the response module, which judges that mains frequency has, occurs exception or frequency departure change greatly
Trend when, then improve to mains frequency detection sample frequency；Or when the response module judges that mains frequency is inclined
When difference has the trend progressively alleviated, then the sample frequency to mains frequency detection is reduced.
On the basis of above-described embodiment, in another embodiment of the present invention, as shown in Fig. 2 additionally providing a kind of with dynamic
The charging electric vehicle method of state frequency modulation function, comprises the following steps：
Mains frequency detects, and detects the real-time change of mains frequency；
Mains frequency variation prediction, the frequency change within several seconds of future of mains frequency is predicted；
Response control, when judging trend that mains frequency changes, then adjusted according to mains frequency variation tendency dynamic
Respond threshold value and/or corresponding amplitude.
On the basis of above-described embodiment, in another embodiment of the present invention, the response control is specifically, work as the response
Control module judges that mains frequency has when trend that exception or frequency departure become big occurs, then reduces the threshold of the action per one-level
Value；Or when the response module judges that mains frequency deviation has the trend progressively alleviated, then improve electric automobile and ring
The threshold value that should be acted per one-level.
On the basis of above-described embodiment, in another embodiment of the present invention, the response control is specifically, work as the response
Control module judges that mains frequency has when trend that exception or frequency departure become big occurs, and increases in each threshold grade and rings
Answer amplitude；When the response module judges that mains frequency deviation has the trend progressively alleviated, each threshold etc. is reduced
Response amplitude in level.
On the basis of above-described embodiment, in another embodiment of the present invention, the response control is specifically, work as the response
Control module judges that mains frequency has when trend that exception or frequency departure become big occurs, and reduces the threshold value of the action per one-level
And increase response amplitude in each threshold grade；When the response module judges that mains frequency deviation has what is progressively alleviated
During trend, improve the threshold value that electric automobile response acts per one-level and reduce response amplitude in each threshold grade.In addition,
Can also be in the trend for judging mains frequency and changing, then response module is according to the dynamic adjustment pair of mains frequency variation tendency
The sample frequency of mains frequency detection.Specifically, the response module, which judges that mains frequency has, occurs exception or frequency
When deviation becomes big trend, then the sample frequency to mains frequency detection is improved；Or when the response module judges electricity
When net frequency departure has the trend progressively alleviated, then the sample frequency to mains frequency detection is reduced.
Specifically, if frequency detection module 2 uses the sampling period as T1Monitoring electric network frequency chip, ultra-short term prediction mould
The pre- measured frequency of block 3 is T2, T2Slightly larger than T1If the mains frequency deviation delta f of frequency detection module detection1Predicted with ultra-short term
The mains frequency deviation delta f of module prediction2Between difference in certain threshold interval F1Interior, then the mains frequency that inspection is surveyed is inclined
Difference is reasonable believable testing result, F2For the permission normal range (NR) of frequency departure.When monitor mains frequency have occur it is different
When trend and prediction result close with testing result that normal or frequency changes, now the frequency sampling cycle is according to mains frequency
Variation tendency be changed, while EV (electric vehicle) according to SOC (state-of-charge) condition adjudgement of itself if appropriate for ginseng
With the frequency response to power network, if SOC (state-of-charge) state is not suitable for current response action, in idle state,
Until next round acts；Frequency response is carried out according to the control strategy of response if being adapted to participate in, i.e., when mains frequency has generation
When exception or frequency departure become big trend, reduce the threshold value of action per one-level and increase the sound in each threshold grade
Answer amplitude (i.e. the size of the charging and discharging state of electric car or discharge and recharge frequency) so that electric automobile can be with quick response, with more
Quickly improve power grid environment, when mains frequency deviation has the trend progressively alleviated, improve electric automobile response and moved per one-level
The threshold value of work, the charged state of response amplitude electric car or the size of charge frequency in each threshold grade are reduced, is reached
The effect of charging equipment of electric automobile dynamic response mains frequency.Until detecting normal frequency, according to ultra-short term prediction module
When predicting following several seconds mains frequencies alteration trend without exception, stop responding and simultaneously carries out next round monitoring.
This patent has the beneficial effect that：Charging device of electric automobile with dynamic frequency function and side described in this patent
Method, it analyzes the variation tendency of following power network by ultra-short term prediction module, when the frequency departure and the frequency of detection of prediction are inclined
The difference of difference just determines that testing result is effective, improves the conjunction that mains frequency changes testing result in certain threshold interval
Confidence level is managed, adds the reliability of frequency response；Moreover, present patent application adjusts according to mains frequency variation tendency, dynamic
The response action threshold value of electric automobile and corresponding amplitude and the sample frequency to mains frequency detection, it is specifically, each
The threshold value setting of level is influenceed by mains frequency variation tendency, when mains frequency has generation exception or frequency departure to become big and become
During gesture, the threshold value of the action per one-level is reduced so that electric automobile can improve power grid environment with quick response；Work as mains frequency
When deviation has the trend progressively alleviated, the threshold value of electric automobile response action per one-level is improved；Or when mains frequency has hair
When raw exception or frequency become big trend partially, increase response amplitude in each threshold grade, faster to improve power network
Environment；When mains frequency deviation has the trend progressively alleviated, response amplitude in each threshold grade is reduced；Or work as power network
When frequency has the trend that exception occurs, increase sample frequency, rather than just go to increase after monitoring abnormal frequency；Improve response
Speed, so as to the change of charging equipment of electric automobile dynamic response mains frequency, reach the effect of fast frequency hopping, effectively improve electricity
The stability of net frequency.Further, except response action threshold value, outside the amplitude and sample frequency of response, other parameters
Setting is also influenceed and dynamic change by mains frequency variation tendency.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of charging device of electric automobile with dynamic frequency function, including frequency detection module and response module,
Characterized in that, also including ultra-short term prediction module, the input of the frequency detection module electrically connects with access power network, described
The output end of frequency detection module is connected by ultra-short term prediction module with the response module, the response module
Electrically connected with batteries of electric automobile group；
The frequency detection module is used to detecting the real-time change of mains frequency and sample frequency data transfer is pre- to ultra-short term
Survey module；
The frequency change that the ultra-short term prediction module is used within several seconds following to mains frequency is predicted, and by pre- frequency measurement
Rate delta data is delivered to response module；
After the response module receives the prediction frequency variation data of ultra-short term prediction module transmission, at data
Reason, if judging the trend that mains frequency changes, response module responds according to the dynamic adjustment of mains frequency variation tendency
Threshold value.
2. the charging device of electric automobile according to claim 1 with dynamic frequency function, it is characterised in that when described
Response module judges that mains frequency has when trend that exception or frequency departure become big occurs, then reduces per one-level action
Threshold value；Or when the response module judges that mains frequency deviation has the trend progressively alleviated, then improve electronic vapour
The threshold value of car response action per one-level.
3. the charging device of electric automobile according to claim 1 or 2 with dynamic frequency function, it is characterised in that institute
After stating the prediction frequency variation data that response module receives the transmission of ultra-short term prediction module, by data processing, if sentencing
The trend that disconnected mains frequency changes, the response module is according to mains frequency variation tendency dynamic adjustment response amplitude.
4. the charging device of electric automobile according to claim 3 with dynamic frequency function, it is characterised in that when described
Response module judges that mains frequency has when trend that exception or frequency departure become big occurs, and increases each threshold grade
Interior response amplitude；When the response module judges that mains frequency deviation has the trend progressively alleviated, each door is reduced
Response amplitude in sill grade.
5. the charging device of electric automobile according to claim 3 with dynamic frequency function, it is characterised in that the sound
Control module is answered to be provided with dynamic response button and manual control button；Or the response module also with alarm and
Display electrically connects, and when response module detects and confirms frequency departure rated value, response module provides alarm
Signal, alarm start to alarm；The display display frequency deviation and frequency change rate information.
A kind of 6. charging electric vehicle method with dynamic frequency function, it is characterised in that comprise the following steps：
S01, mains frequency detect, and detect the real-time change of mains frequency；
S02, mains frequency variation prediction, the frequency change within several seconds of future of mains frequency is predicted；
S03, response control, when judging trend that mains frequency changes, then adjusted according to mains frequency variation tendency dynamic
Respond threshold value.
7. the charging electric vehicle method according to claim 6 with dynamic frequency function, it is characterised in that the step
Rapid S03 specifically, when the response module judge mains frequency have exception or frequency departure change big trend occurs when,
Then reduce the threshold value of the action per one-level；Or when the response module judges that mains frequency deviation has what is progressively alleviated
During trend, then the threshold value of electric automobile response action per one-level is improved.
8. the charging electric vehicle method according to claim 6 with dynamic frequency function, it is characterised in that the step
Rapid S03 also includes, after the response module receives the prediction frequency variation data of ultra-short term prediction module transmission, warp
Data processing is crossed, if judging the trend that mains frequency changes, response module is according to mains frequency variation tendency dynamic
Adjust response amplitude.
9. the charging electric vehicle method according to claim 8 with dynamic frequency function, it is characterised in that the step
Rapid S03 specifically, when the response module judge mains frequency have exception or frequency departure change big trend occurs when,
Increase response amplitude in each threshold grade；When the response module judges that mains frequency deviation has what is progressively alleviated to become
During gesture, response amplitude in each threshold grade is reduced；Or when the response module judges that mains frequency has generation different
When often or frequency departure becomes big trend, reduce the threshold value of action per one-level and increase response width in each threshold grade
Degree；When the response module judges that mains frequency deviation has the trend progressively alleviated, it is each to improve electric automobile response
The threshold value of level action simultaneously reduces response amplitude in each threshold grade.
10. the charging electric vehicle method with dynamic frequency function according to any one of claim 6 to 9, it is special
Sign is that the response control step, including automatic dynamic respond and artificial dynamic response both of which.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710601285.8A CN107359625B (en) | 2017-07-21 | 2017-07-21 | Electric automobile charging device and method with dynamic frequency modulation function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710601285.8A CN107359625B (en) | 2017-07-21 | 2017-07-21 | Electric automobile charging device and method with dynamic frequency modulation function |
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| Publication Number | Publication Date |
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| CN107359625A true CN107359625A (en) | 2017-11-17 |
| CN107359625B CN107359625B (en) | 2020-05-15 |
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Cited By (1)
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| CN114204579A (en) * | 2021-11-25 | 2022-03-18 | 湖北工业大学 | Energy storage output power shaping control method applied to power system frequency modulation |
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| CN104932262A (en) * | 2015-05-29 | 2015-09-23 | 武汉大学 | Micro-grid frequency modulation method with electric automobile based on MPC and PI control method |
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| CN101951006A (en) * | 2010-08-03 | 2011-01-19 | 湖南大学 | Active safety charging power response complete device of electric vehicle charging facility |
| CN103762688A (en) * | 2014-01-24 | 2014-04-30 | 湖南大学 | Grid frequency dynamic response device of electric car charging equipment |
| CN104242302A (en) * | 2014-08-28 | 2014-12-24 | 湖南智仁科技有限公司 | Coordinated control method for frequency modulation of large-scale electric automobile auxiliary power grid |
| CN104410064A (en) * | 2014-10-17 | 2015-03-11 | 湖南智仁科技有限公司 | Asynchronous control method for distributed electric automobile participating in power grid frequency response |
| CN104932262A (en) * | 2015-05-29 | 2015-09-23 | 武汉大学 | Micro-grid frequency modulation method with electric automobile based on MPC and PI control method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114204579A (en) * | 2021-11-25 | 2022-03-18 | 湖北工业大学 | Energy storage output power shaping control method applied to power system frequency modulation |
| CN114204579B (en) * | 2021-11-25 | 2024-04-19 | 湖北工业大学 | Energy storage output power shaping control method applied to frequency modulation of power system |
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| CN107359625B (en) | 2020-05-15 |
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