CN102386665A - Electric vehicle charging device intelligently responding to voltage level of power grid - Google Patents
Electric vehicle charging device intelligently responding to voltage level of power grid Download PDFInfo
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- CN102386665A CN102386665A CN2010102667134A CN201010266713A CN102386665A CN 102386665 A CN102386665 A CN 102386665A CN 2010102667134 A CN2010102667134 A CN 2010102667134A CN 201010266713 A CN201010266713 A CN 201010266713A CN 102386665 A CN102386665 A CN 102386665A
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- voltage
- voltage level
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- charging device
- response
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- 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
- Y02T90/167—Systems integrating technologies related to power network operation and communication or information technologies for supporting the interoperability of electric or hybrid vehicles, i.e. smartgrids as interface for battery charging of electric vehicles [EV] or hybrid vehicles [HEV]
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- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S30/00—Systems supporting specific end-user applications in the sector of transportation
- Y04S30/10—Systems supporting the interoperability of electric or hybrid vehicles
- Y04S30/12—Remote or cooperative charging
Abstract
The invention discloses an electric vehicle charging device intelligently responding to the voltage level of a power grid. The invention relates to the field of electrical engineering, in particular to an electric vehicle charging power intelligent safe response. The electric vehicle charging device intelligently responding to the voltage level of the power grid comprises a communication module, a starting module and a control response module. The communication module obtains the node voltage information of a superior level of high-voltage distribution grid transformation substation through a special data optical fiber communication network, and saves the information into a special database of an electric vehicle charging station to analyze and calculate. The starting module judges whether to send out an action signal to start the response control module or not according to the communication module and the data of the special database for charging of the electric vehicle. The response control module adjusts the charging power according to the node voltage level of the transformation substation after receiving the action signal sent out by the starting module. The electric vehicle charging device intelligently responding to the voltage level of the power grid is characterized in that a charging load intelligently adjusts the charging power according to the voltage level but not the electricity is limited by pulling a switch and the load is cut in a traditional power system. The electric vehicle charging device intelligently responding to the voltage level of the power grid can intelligently respond to the voltage level of the power grid in different stages so as to assist in the maintenance of the safe and stable operation of the power grid.
Description
Technical field
The present invention relates to the electrical engineering field, be specially a kind of charging device of electric automobile of intelligent response line voltage level.
Background technology
One, electric automobile and related industry thereof is the important development direction of China's economy
Electric automobile is because therefore outstanding features such as its low-carbon energy-saving become the important industry developing direction that China develops low-carbon economy, promotes energy-saving and emission-reduction.In national relevant policies guiding with under helping, the numerous domestic automobile vendor that comprises BYD is the important directions of electric automobile as following enterprise development, and released some money electric automobiles.Ev industry has become the important component part of China's new-energy automobile industry at present, is that the industry chain (supply chain) of core highlights with the electric automobile.
Along with the development of ev industry, the electrically-charging equipment of restriction electric automobile large-scale promotion also begins extensive planning operation.Got into since 2010; National grid and Southern Power Grid Company are classified as electric automobile charging station the important component part of intelligent grid development strategy; Begin domestic electric automobile charging station of layout and relevant auxiliary facility thereof respectively, plan at first in Beijing, big cities such as Shanghai, Tianjin, Shenzhen build electrically-charging equipments such as some electric automobile charging stations and charging pile.In future, electric automobile charging station will be seen everywhere as the filling station, fully satisfy the needs of charging electric vehicle.
Two, charging electric vehicle plant capacity adjustment
At present, the adjustment of the power output of charging electric vehicle equipment mainly contains modes such as fixing time, decide power, constant voltage, constant current.In the recent period Expo is put on display in Shanghai, and the intelligent charging machine of being permitted to continue has proposed the charger discharge module, it as the interactive important component part of intelligent grid.But mostly the adjustment of these charging electric vehicle power is that from client's demand and economy for the user provides optimum convenient service and most economical charging cost, they have seldom considered the fail safe and the stability of operation of power networks.
Three, power system safety and stability analysis, control technology
Electrical network various stability problems possibly occur because various disturbances, for example frequency stabilization, angle stability, voltage stable problem etc., and wherein voltage stability is exactly to be worth one of problem that emphasis considers.Occur when electrical network under the situation such as heavy load, reactive power deficiency, rapid drawdown can appear in some node voltages of electrical network, as not controlling, the voltage collapse of the whole network may occur, causes the generation of the accident of having a power failure on a large scale.The traditional voltage control device, or through dispatch command, or through safety stabilizing devices such as low pressure off-loads, the excision load causes certain customers' outage, has reduced the power supply reliability of electrical network.
Charging electric vehicle is the process that converts electric energy to chemical energy, can carry out the charge power adjustment easily and fast.Therefore, patent of the present invention proposes a kind of charging electric vehicle intelligent response device on the basis of considering electrical network low-voltage risk.Through patent of the present invention, when low-voltage appears in electrical network, be not to stop charging electric vehicle, but real-time intelligent adjustment charge power is accomplished initiatively " low pressure off-load ", assists the recovery of line voltage level, improves the stability of power system operation.
Summary of the invention
Patent purpose of the present invention is to provide a kind of charging electric vehicle intelligent response device of considering electrical network low pressure risk; Active response when line voltage is on the low side; Adjustment electrically-charging equipment power output helps the voltage levvl of electrical network to return to normal operation level as early as possible, guarantees power supply reliability.
Patent of the present invention is divided into communication module, starts module, response module.
Communication module adopts local area network technology, inserts upper level high pressure distribution transformer station through optical networking, realizes communicating by letter of electric automobile charging station and transformer station.The every busbar voltage information of obtaining upper level high pressure distribution transformer station second at a distance from T of communication module deposits busbar voltage information in the charging station private database, the minimum voltage level of analysis normal operating mode, calculated response control module startup threshold values V then
m, and with it as one of input signal that starts module.
Start the current information of voltage V that module is obtained according to communication module
1With threshold voltage V
m, assess current voltage levvl.If the current voltage V that obtains
1Less than threshold voltage V
m, (t＜T) obtains information of voltage V again then to postpone t second
2If, V
2Still less than V
m, then start module output response module actuating signal.
Response module starts after the actuating signal that reception startup module is sent.Response module is divided into n grade with the voltage response interval.Grade is high more, and the magnitude of voltage in voltage response interval is big more, and the charge power adjustment amount is more little.Response is interval and the amplitude example is following: voltage magnitude V is positioned at interval (0.9V
mV
m] time, charge power is adjusted into Pm; Voltage magnitude V is positioned at interval (0.8V
m0.9V
m] time, charge power is adjusted into 0.9Pm.Voltage magnitude V is positioned at interval (0.7V
m0.8V
m] time, charge power is adjusted into 0.7Pm; Voltage magnitude is positioned at interval (00.7V
m] time, charge power is adjusted into 0.5Pm.
Description of drawings
Fig. 1 shows the function knot block diagram of patent of the present invention;
Fig. 2 shows the information flow chart of patent of the present invention;
Fig. 3 is the response actions schematic diagram that example shows patent of the present invention with 4 response grades;
Embodiment
Patent of the present invention is a kind of charging device of electric automobile of intelligent response line voltage level, accomplishes the initiatively function of " low pressure off-load " through communication module, startup module, response module.
Patent of the present invention through Fibre Optical Communication Technology, is set up the local area network (LAN) of information sharing between electric automobile charging station and upper level high pressure distribution transformer station.Electric automobile charging station is by dedicated fibre optical network; Through certain communication protocol, real-time and upper level high pressure distribution transformer substation communication obtains node busbar voltage information; Then node busbar voltage information is imported into electrically-charging equipments such as charging station institute linchpin charger, charging pile; And deposit it in private database and handle, the historical low voltage levvl under the statistics and analysis normal operating mode calculates the node voltage threshold values of charge power adjustment.
Charging electric vehicle equipment is received node voltage information and the node voltage threshold values that charging station control centre sends; Whether less than the voltage levvl of the criterion assessment current power system of node voltage threshold values, whether decision carries out the charge power adjustment according to the present node voltage magnitude.If adjust, then further provide power adjustment signal, send into response module.Response module then according to the voltage magnitude size, provides power adjustment then.If voltage magnitude satisfies 0.9V
m≤V＜V
mThe time, charge power is adjusted into Pm so; Voltage magnitude satisfies 0.8V
m≤V＜0.9V
mThe time, charge power is adjusted into 0.9Pm so; Voltage magnitude satisfies 0.7V
m≤V＜0.8V
mThe time, charge power is adjusted into 0.7Pm so; Voltage magnitude satisfies V＜0.7V
mThe time, charge power is adjusted into 0.5Pm so.
Claims (8)
1. the charging device of electric automobile of an intelligent response line voltage level; It is characterized in that comprising: utilize communication network to obtain the busbar voltage information of upper level high pressure distribution transformer station in real time; Online in real time assessment line voltage level when the line voltage horizontal abnormality, is adjusted the size of charging electric vehicle facility charge power automatically; Realize the intelligent response of charge power, assist electrical network to keep the voltage levvl of safety.
2. the charging device of electric automobile of intelligent response line voltage level according to claim 1 is characterized in that: device is made up of communication module, startup module, response module three parts.
3. the charging device of electric automobile of intelligent response line voltage level according to claim 1 is characterized in that: adopt local area network technology, through the special optic fibre communication network, obtain transformer station's node voltage information of encryption in real time.
4. the charging device of electric automobile of intelligent response line voltage level according to claim 1; It is characterized in that: when upper level high pressure distribution transformer substation voltage horizontal abnormality; According to certain criterion, the output action signal starts response module and carries out the charge power adjustment.
5. the charging device of electric automobile of intelligent response line voltage level according to claim 1; It is characterized in that: communication module is analyzed and is handled transformer station's node voltage real time information of obtaining; Add up the minimum voltage under the electrical network normal operating mode in the regular period, be used to assess the node voltage level of current time.
6. the charging device of electric automobile of intelligent response line voltage level according to claim 1 is characterized in that: communication module is according to the horizontal V of the minimum voltage of historical record
Min, the substation bus bar threshold voltage V that starts module output action signal is set
m=k * V
Min
7. the charging device of electric automobile of intelligent response line voltage level according to claim 1 is characterized in that: if the current node voltage amplitude V of transformer station that obtains
1Less than threshold voltage V
m, then postpone t after second, read the node voltage amplitude V of transformer station once more
2If V
2＜V
m, start module output action signal, start response module adjustment charge power.
8. the charging device of electric automobile of intelligent response line voltage level according to claim 1 is characterized in that: response module is divided into n grade with the voltage response interval.Grade is high more, and the magnitude of voltage in voltage response interval is big more, and the charge power adjustment amount is more little.Response is interval and the amplitude example is following: voltage magnitude V is positioned at interval (0.9V
mV
m] time, charge power is adjusted into Pm; Voltage magnitude V is positioned at interval (0.8V
m0.9V
m] time, charge power is adjusted into 0.9Pm.Voltage magnitude V is positioned at interval (0.7V
m0.8V
m] time, charge power is adjusted into 0.7Pm; Voltage magnitude is positioned at interval (00.7V
m] time, charge power is adjusted into 0.5Pm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102667134A CN102386665A (en) | 2010-08-31 | 2010-08-31 | Electric vehicle charging device intelligently responding to voltage level of power grid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102667134A CN102386665A (en) | 2010-08-31 | 2010-08-31 | Electric vehicle charging device intelligently responding to voltage level of power grid |
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| Publication Number | Publication Date |
|---|---|
| CN102386665A true CN102386665A (en) | 2012-03-21 |
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ID=45825768
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| CN2010102667134A Pending CN102386665A (en) | 2010-08-31 | 2010-08-31 | Electric vehicle charging device intelligently responding to voltage level of power grid |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104836292A (en) * | 2015-05-08 | 2015-08-12 | 山东大学 | Electric automotive charging pile control system with considered electric network frequency safety, and method thereof |
| CN108899891A (en) * | 2018-05-25 | 2018-11-27 | 中国电力科学研究院有限公司 | A kind of the DC charging facility charge control method and system of voltage ripple of power network |
| CN110611343A (en) * | 2019-07-30 | 2019-12-24 | 江西江铃集团新能源汽车有限公司 | Charging circuit and charging device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090229900A1 (en) * | 2008-03-13 | 2009-09-17 | International Business Machines Corporation | Plugin hybrid electric vehicle with v2g optimization system |
| CN101702530A (en) * | 2009-11-19 | 2010-05-05 | 西安迅湃快速充电技术有限公司 | Vehicle-mounted charging device for electric vehicles |
-
2010
- 2010-08-31 CN CN2010102667134A patent/CN102386665A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090229900A1 (en) * | 2008-03-13 | 2009-09-17 | International Business Machines Corporation | Plugin hybrid electric vehicle with v2g optimization system |
| CN101702530A (en) * | 2009-11-19 | 2010-05-05 | 西安迅湃快速充电技术有限公司 | Vehicle-mounted charging device for electric vehicles |
Non-Patent Citations (2)
| Title |
|---|
| 郑广君等: "北京电网低压减载方案研究", 《电力设备》 * |
| 金海峰等: "低压减载装置作为电压稳定校正控制的探讨", 《华北电力技术》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104836292A (en) * | 2015-05-08 | 2015-08-12 | 山东大学 | Electric automotive charging pile control system with considered electric network frequency safety, and method thereof |
| CN104836292B (en) * | 2015-05-08 | 2017-01-25 | 山东大学 | Electric automotive charging pile control system with considered electric network frequency safety, and method thereof |
| CN108899891A (en) * | 2018-05-25 | 2018-11-27 | 中国电力科学研究院有限公司 | A kind of the DC charging facility charge control method and system of voltage ripple of power network |
| CN110611343A (en) * | 2019-07-30 | 2019-12-24 | 江西江铃集团新能源汽车有限公司 | Charging circuit and charging device |
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Application publication date: 20120321 |