CN107085139A - The efficiency metering system and metering method of a kind of electric automobile direct-current charging post - Google Patents
The efficiency metering system and metering method of a kind of electric automobile direct-current charging post Download PDFInfo
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- CN107085139A CN107085139A CN201710342208.5A CN201710342208A CN107085139A CN 107085139 A CN107085139 A CN 107085139A CN 201710342208 A CN201710342208 A CN 201710342208A CN 107085139 A CN107085139 A CN 107085139A
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- current charging
- efficiency
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- charging post
- electric automobile
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
- G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
- G01R22/061—Details of electronic electricity meters
- G01R22/063—Details of electronic electricity meters related to remote communication
Abstract
The present invention relates to a kind of efficiency metering system of electric automobile direct-current charging post and metering method, utilize the device structure of existing direct-current charging post, electric energy meter is installed in AC, dc bus side and charging pile outlet side and carries out data acquisition, the data obtained is pooled to acquisition terminal, into concentrator, transmit to efficiency metrology.Efficiency metrology can calculate the equipment loss of the power attenuation, i.e. distribution transformer, power circuit and charger that obtain each component of charging pile according to gained measurement data, complete to measure the efficiency of electric automobile direct-current charging post.The present invention, the energy consumption of electric automobile direct-current charging post each several part device can be obtained, and the influence that this novel high-power nonlinear device of charger is produced for the charging station quality of power supply and operation of power networks can be analyzed, contribute to the saving energy and decreasing loss of charging equipment of electric automobile, while can be that the placement of electric automobile direct-current charging post and the planning of charging station provide concrete foundation.
Description
Technical field
The present invention relates to a kind of Electro-metering System and method for, more particularly to a kind of electric automobile direct-current charging post efficiency meter
Measure System and method for.
Background technology
Electric automobile is the low-carbon new technology of energy-conserving and environment-protective and the important component of following intelligent grid development, enjoys generation
Pay close attention on boundary.Under the promotion energetically of national policy, China's ev industry will step into Rapid development stage.With electric automobile
Popularize, its charging behavior will change the original part throttle characteristics of system, on Electric Power Network Planning operation produce influence.With electronic vapour
Among a large amount of construction in the whole nation of the related infrastructure of car development such as alternating-current charging pile, direct-current charging post, for electric automobile
The measurement criteria of electrically-charging equipment, technical research become the emphasis for promoting the industry development naturally.Wherein, direct-current charging post can be straight
The battery charging of electric automobile is connected in, general to be powered using three-phase four-wire system or three-phase three-wire system, the voltage and current of output can
Adjust scope big, it is possible to achieve the quick charge of electric automobile, with good development prospect.
In consideration of it, the invention provides a kind of electric automobile direct-current charging post efficiency metering system and method.
The content of the invention
It is an object of the invention to provide a kind of efficiency metering system of electric automobile direct-current charging post and method, filled with reducing
Energy loss in electric process and the influence to operation of power networks.
The present invention provides a kind of efficiency metering system of electric automobile direct-current charging post to solve above-mentioned technical problem, its
It is characterised by, using existing direct-current charging post equipment, is respectively mounted in AC, dc bus side and charging pile outlet side
One electric energy meter, the energy data of collection electric energy meter position, is pooled to acquisition terminal, then by concentrator, transmit to efficiency
Metrology.
The efficiency metrology includes component loss calculation unit, equipment energy consumption computing unit and system energy efficiency meter
Measure unit；
The component loss calculation unit, for each element ginseng in gained measurement data and direct-current charging post equipment
Number calculates the power attenuation for obtaining each element；
The equipment energy consumption computing unit, direct-current charging post equipment is obtained for the power attenuation classified calculating according to each element
Energy consumption；
The system energy efficiency metering units, for the direct-current charging post equipment energy consumption according to gained, analyze charging electric vehicle mistake
Whole system efficiency measures situation in journey.
The loss that the component loss calculation unit is calculated includes power electronic devices in direct-current charging post equipment, whole
Flow the loss of device and DC/DC converters.
The energy consumption that the equipment energy consumption computing unit is calculated includes the energy of distribution transformer, power circuit and charger
Consumption.
The energy data of each electric energy meter collection, acquisition terminal is pooled to by Ethernet or CAN, then by Ethernet
Or CAN enters concentrator, by wired or wireless network transmission to efficiency metrology.
Direct-current charging post equipment includes AC power line, distribution transformer, dc bus and charger, wherein, charging
Machine includes PWM rectifier and non-isolation type DC/DC converters.
A kind of efficiency metering method of electric automobile direct-current charging post, it is characterised in that utilize existing direct-current charging post
Equipment, on the basis of its existing collection voltages current signal interface, in AC, dc bus side and charging pile outlet side
Electric energy meter is respectively mounted, all energy datas is gathered, is pooled to acquisition terminal, then through concentrator, transmit to efficiency metrology；
It is single that the efficiency metrology includes component loss calculation unit, equipment energy consumption computing unit and system energy efficiency metering
Member；
The component loss calculation unit, direct-current charging post is obtained for being calculated according to gained energy data and component parameters
The power attenuation of each element in equipment；
The equipment energy consumption computing unit, direct-current charging post equipment is obtained for the power attenuation classified calculating according to each element
Energy consumption；
The system energy efficiency metering units, for the energy consumption according to gained direct-current charging post equipment, analysis electric automobile fills
Whole system efficiency measures situation in electric process.
When coming with meter inside direct-current charging post, the electric energy meter that its corresponding position external cabling is installed is omitted, by
The signaling interface for the collection Current Voltage that direct-current charging post is carried directly transmits the energy data signal of measurement to acquisition terminal.
The acquisition terminal is connected by Ethernet or CAN with electric energy meter, the concentrator by Ethernet or
Person's CAN is connected with the acquisition terminal.
The concentrator is connected by wired or wireless network with efficiency metrology.
The beneficial effects of the invention are as follows：The present invention utilizes meter inside direct-current charging post and electricity everywhere mounted externally
Energy table can gather the real-time measuring datas such as voltage in charging process, electric current, active power, reactive power, and pass through Ethernet
Or CAN is transmitted to efficiency metrology by different levels, data are accurate, reliable and the whole process of charging can be carried out
Efficiency detection and the metering of component-level, device level and system-level three levels, can intactly analyze direct-current charging post each rank
Section, the energy consumption of each component equipment and the influence produced to the charging station quality of power supply and operation of power networks process, are conducive to
Saving energy and decreasing loss work completion, and can for electric automobile direct-current charging post install and charging station planning provide reliably according to
According to.
Brief description of the drawings
Fig. 1 carries out the schematic diagram of electric automobile direct-current charging post efficiency metering for the present invention.
Embodiment
In order that those skilled in the art are better understood from technical solution of the present invention, below in conjunction with the accompanying drawings and embodiment
The present invention is described in further detail.
As shown in figure 1, the structure of electric automobile direct-current charging post by AC power line, distribution transformer, dc bus with
And charging mechanism into, wherein, charger include PWM rectifier and non-isolation type DC/DC converters.The friendship of AC power line transmission
Stream electricity is rectified into DC power transmission to dc bus by distribution transformer and PWM rectifier, and the non-isolation type DC/DC of charger becomes
Parallel operation is connected on dc bus, is Vehicular accumulator cell charging.Electric automobile direct-current charging post efficiency metering system utilizes existing
Direct-current charging post system, installs electric energy meter, as shown in FIG. electric energy meter in AC, dc bus side and charging pile outlet side
Position, gather it is all needed for measurement data, acquisition terminal is pooled to by Ethernet or CAN, then by Ethernet or
CAN enters concentrator, by wired or wireless network transmission to efficiency metrology.
System architecture of the electric automobile direct-current charging post efficiency metering method of the present invention according to direct-current charging post, is filling
On the basis of the existing collection voltages current signal interface of motor, in AC, dc bus side and charging pile outlet side peace
The position of electric energy meter, as shown in FIG. electric energy meter is filled, all required measurement data is gathered, is collected by Ethernet or CAN
Enter concentrator to acquisition terminal, then by Ethernet or CAN, measure flat by wired or wireless network transmission to efficiency
Platform, wherein, the signaling interface of charger is not marked.
The efficiency metrology includes component loss calculation unit, equipment energy consumption computing unit and system energy efficiency meter
Unit is measured, the component loss calculation unit obtains each yuan for being calculated according to gained measurement data and component parameters
The power attenuation of part, including power electronic devices（Such as IGBT, diode）, rectifier, the loss of the element such as DC/DC converters；
The equipment energy consumption computing unit, the energy for obtaining each equipment of direct-current charging post according to the power attenuation classified calculating of each element
Consumption situation, includes the energy consumption of distribution transformer, power circuit and charger；The system energy efficiency metering units, for basis
Whole system efficiency metering situation during gained equipment energy consumption situation, analysis charging electric vehicle.
Direct-current charging post charge inside machine comes with electric energy meter, therefore, and charging pile outlet side can require no outside and connect
Line separately adds electric energy meter, the signaling interface for gathering Current Voltage for making full use of charging pile to carry, and directly can believe measurement data
Number transmit to acquisition terminal.
Claims (10)
1. a kind of efficiency metering system of electric automobile direct-current charging post, it is characterised in that set using existing direct-current charging post
It is standby, it is respectively mounted an electric energy meter, the electricity of collection electric energy meter position in AC, dc bus side and charging pile outlet side
Energy data, are pooled to acquisition terminal, then by concentrator, transmit to efficiency metrology.
2. the efficiency metering system of electric automobile direct-current charging post according to claim 1, it is characterised in that the efficiency
Metrology includes component loss calculation unit, equipment energy consumption computing unit and system energy efficiency metering units；
The component loss calculation unit, for each element ginseng in gained measurement data and direct-current charging post equipment
Number calculates the power attenuation for obtaining each element；
The equipment energy consumption computing unit, direct-current charging post equipment is obtained for the power attenuation classified calculating according to each element
Energy consumption；
The system energy efficiency metering units, for the direct-current charging post equipment energy consumption according to gained, analyze charging electric vehicle mistake
Whole system efficiency measures situation in journey.
3. the efficiency metering system of electric automobile direct-current charging post according to claim 2, it is characterised in that first device
The loss that part loss calculation unit is calculated includes power electronic devices, rectifier and DC/DC conversion in direct-current charging post equipment
The loss of device.
4. the efficiency metering system of electric automobile direct-current charging post according to claim 2, it is characterised in that the equipment
The energy consumption that energy consumption calculation unit is calculated includes the energy consumption of distribution transformer, power circuit and charger.
5. the efficiency metering system of electric automobile direct-current charging post according to claim 1, it is characterised in that each electric energy meter
The energy data of collection, is pooled to acquisition terminal, then enter collection by Ethernet or CAN by Ethernet or CAN
Middle device, by wired or wireless network transmission to efficiency metrology.
6. the efficiency metering system of electric automobile direct-current charging post according to claim 1, it is characterised in that DC charging
Stake equipment include AC power line, distribution transformer, dc bus and charger, wherein, charger include PWM rectifier and
Non-isolation type DC/DC converters.
7. a kind of efficiency metering method of electric automobile direct-current charging post, it is characterised in that set using existing direct-current charging post
It is standby, on the basis of its existing collection voltages current signal interface, in AC, dc bus side and charging pile outlet side point
Electric energy meter is not installed, all energy datas is gathered, is pooled to acquisition terminal, then through concentrator, transmit to efficiency metrology；
It is single that the efficiency metrology includes component loss calculation unit, equipment energy consumption computing unit and system energy efficiency metering
Member；
The component loss calculation unit, direct-current charging post is obtained for being calculated according to gained energy data and component parameters
The power attenuation of each element in equipment；
The equipment energy consumption computing unit, direct-current charging post equipment is obtained for the power attenuation classified calculating according to each element
Energy consumption；
The system energy efficiency metering units, for the energy consumption according to gained direct-current charging post equipment, analysis electric automobile fills
Whole system efficiency measures situation in electric process.
8. the efficiency metering method of electric automobile direct-current charging post according to claim 7, it is characterised in that when direct current fills
When coming with meter inside electric stake, the electric energy meter that its corresponding position external cabling is installed is omitted, is carried by direct-current charging post
The signaling interface of collection Current Voltage directly transmits the energy data signal of measurement to acquisition terminal.
9. the efficiency metering method of electric automobile direct-current charging post according to claim 7, it is characterised in that the collection
Terminal is connected by Ethernet or CAN with electric energy meter, and the concentrator is adopted by Ethernet or CAN with described
Collect terminal connection.
10. the efficiency metering method of electric automobile direct-current charging post according to claim 7, it is characterised in that the collection
Middle device is connected by wired or wireless network with efficiency metrology.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710342208.5A CN107085139A (en) | 2017-05-16 | 2017-05-16 | The efficiency metering system and metering method of a kind of electric automobile direct-current charging post |
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| CN201710342208.5A CN107085139A (en) | 2017-05-16 | 2017-05-16 | The efficiency metering system and metering method of a kind of electric automobile direct-current charging post |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109307852A (en) * | 2018-09-06 | 2019-02-05 | 中国电力科学研究院有限公司 | A kind of method and system of the measurement error of determining electric automobile charging pile electric energy metering device |
| CN109816195A (en) * | 2018-12-05 | 2019-05-28 | 深圳市科陆电子科技股份有限公司 | A kind of charging station electric energy loss metering system and metering method |
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| CN106093558A (en) * | 2016-05-31 | 2016-11-09 | 武汉大学 | Electric energy acquisition terminal ERTU scheme for the metering of flexible direct current power transmission system efficiency |
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| WO2011046408A2 (en) * | 2009-10-16 | 2011-04-21 | Korea Advanced Institute Of Science And Technology | Energy consumption efficiency measuring apparatus and method for on-line electric vehicle |
| CN203117311U (en) * | 2012-12-25 | 2013-08-07 | 中国电力科学研究院 | Electric automobile non-vehicle charger energy efficiency test system |
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| CN109307852A (en) * | 2018-09-06 | 2019-02-05 | 中国电力科学研究院有限公司 | A kind of method and system of the measurement error of determining electric automobile charging pile electric energy metering device |
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Application publication date: 20170822 |