CN105467231B - The grid-connected test method and device of transverter to be measured - Google Patents
The grid-connected test method and device of transverter to be measured Download PDFInfo
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Abstract
The invention discloses a kind of grid-connected test method of transverter to be measured and devices, wherein, grid-connected test device includes bidirectional DC power supply and N number of transverter, it is in parallel with bidirectional DC power supply after N number of transverter parallel connection, then its exchange side is connected to power grid, DC side is connected to the DC side of transverter to be measured, and the exchange side of transverter to be measured is connected with power grid, and grid-connected test method includes the following steps：Bidirectional DC power supply is controlled to start so that bidirectional DC power supply is N number of transverter and transverter to be measured power supply；N number of transverter is controlled according to the rated power of the rated power of bidirectional DC power supply and transverter to be measured and transverter to be measured accordingly starts, until transverter to be measured is with its rated power operation.The grid-connected test method and device are by the way that bidirectional DC power supply and N number of transverter to be connected in parallel and be applied in combination, the operation power of transverter to be measured is gradually increased to realize the grid-connected test to transverter to be measured, cost can be not only substantially reduced, but also consistency is kept without hardware.
Description
Technical field
The present invention relates to transverter technical field of measurement and test, more particularly to the grid-connected test method of a kind of transverter to be measured and
A kind of grid-connected test device of transverter to be measured.
Background technology
As the transverter/inverter of MW (megawatt) power grade is using more and more extensive, the thing followed to transverter/
Inverter carry out grid-connected test Dc source power grade also require it is increasing.There is the big work(of separate unit in existing testing scheme
Rate DC power supply topological structure and Duo Tai small power DC power sources in parallel topological structures, it is as depicted in figs. 1 and 2 respectively, it is adopted in Fig. 1
It is the relatively high power DC power supply that a power is not less than transverter/inverter to be measured, work(after more parallel connections is used in Fig. 2
Rate adds up the smaller power DC power supply not less than transverter/inverter to be measured.
However, using separate unit high-power DC power supply testing scheme when, need to buy or make powerful direct current
Source, the period is long, of high cost, and powerful DC power supply only has unidirectional charge function mostly, does not have reverse discharging function,
Use occasion is limited, easily causes the wasting of resources, and cost performance is low；It is combined into using more small power DC power sources in parallel high-power straight
When the testing scheme in galvanic electricity source, if outsourcing the whole series test device, can greatly increase cost, to every if self manufacture
The hardware coherence of small power DC power supply and the synchronous control technique of software require height, and it is multiple to be easy to cause production process technique
It is miscellaneous, software development workload estimate is big, debugging cycle is long.
Invention content
The purpose of the present invention is intended at least solve above-mentioned one of technological deficiency to a certain extent.
For this purpose, an object of the present invention is to provide a kind of grid-connected test methods of transverter to be measured, by by one
Bidirectional DC power supply and N number of transverter are connected in parallel and are applied in combination, and the operation power of transverter to be measured is gradually increased to realize
Grid-connected test to transverter to be measured can not only substantially reduce cost, but also keep consistency without hardware, convenient and efficient, answer
With flexible.
In order to achieve the above objectives, a kind of grid-connected test method for transverter to be measured that one aspect of the present invention embodiment proposes,
The grid-connected test device of the transverter to be measured includes bidirectional DC power supply and N number of transverter, after N number of transverter parallel connection with
The bidirectional DC power supply is in parallel, the exchange side of each transverter in N number of transverter and the bidirectional DC power supply
Exchange side is connected to power grid after being connected, after the DC side of each transverter is connected with the DC side of the bidirectional DC power supply
It is connected to the DC side of the transverter to be measured, the exchange side of the transverter to be measured is connected with the power grid, wherein N is big
In the integer equal to 2, the grid-connected test method includes the following steps：The bidirectional DC power supply is controlled to start so that described double
It is N number of transverter and the transverter power supply to be measured to DC power supply；According to the rated power of the bidirectional DC power supply
N number of transverter is controlled with the rated power of the transverter to be measured and the transverter to be measured accordingly starts, until described
Transverter to be measured is with the rated power operation of the transverter to be measured.
The grid-connected test method of transverter to be measured according to the ... of the embodiment of the present invention passes through N number of transverter and bidirectional, dc electricity
The operation power of transverter to be measured is gradually increased to realize the grid-connected test to transverter to be measured in the mode of source parallel combination, drop
The low demand to high-power DC power supply, reduces cost；Also, it can gather materials on the spot and directly use transverter, it is convenient and efficient,
Cost is saved, that is, is used for making the transverter being applied in combination being easy to obtain, different capacity, different hardware structure transverter
It can use, transverter to be tested can be even used for being applied in combination when volume production, hardware aspect is not necessarily to be group
The test structure of conjunction adds anything, and without carrying out debugging in parallel, greatly saves the time, reduce cost, improve
Production capacity；In addition it applies flexibly, resources idle will not be caused to waste, that is, use is combined when needs, when unwanted
It can dismantle at any time to the use of other aspects, the investment to fixed assets can be reduced.
In order to achieve the above objectives, a kind of grid-connected test dress for transverter to be measured that another aspect of the present invention embodiment proposes
It sets, including：Bidirectional DC power supply；N number of transverter, it is in parallel with the bidirectional DC power supply after N number of transverter parallel connection, it is described
The exchange side of each transverter in N number of transverter is connected to power grid after being connected with the exchange side of the bidirectional DC power supply, institute
State each transverter DC side be connected with the DC side of the bidirectional DC power supply after be connected to the straight of the transverter to be measured
Side is flowed, the exchange side of the transverter to be measured is connected with the power grid, wherein N is the integer more than or equal to 2；Control module, institute
It states control module and starts so that the bidirectional DC power supply is N number of transverter and institute for controlling the bidirectional DC power supply
Transverter power supply to be measured is stated, and according to the rated power control of the rated power of the bidirectional DC power supply and the transverter to be measured
It makes N number of transverter and the transverter to be measured accordingly starts, until the transverter to be measured is with the transverter to be measured
Rated power operation.
The grid-connected test device of transverter to be measured according to the ... of the embodiment of the present invention, by by N number of transverter and bidirectional, dc
Power sources in parallel is applied in combination that the operation power of transverter to be measured is gradually increased to realize the grid-connected test to transverter to be measured, drops
The low demand to high-power DC power supply, reduces cost；Also, it can gather materials on the spot and directly use transverter, it is convenient and efficient,
Cost is saved, that is, is used for making the transverter being applied in combination being easy to obtain, different capacity, different hardware structure transverter
It can use, transverter to be tested can be even used for being applied in combination when volume production, hardware aspect is without addition
Any part, and without carrying out debugging in parallel, greatly save the time, reduce cost, improve production capacity；In addition spirit is applied
It is living, resources idle will not be caused to waste, that is, be combined use when needs, can dismantle at any time when unwanted to
The use of other aspects can reduce the investment to fixed assets.
The additional aspect of the present invention and advantage will be set forth in part in the description, and will partly become from the following description
Obviously, or practice through the invention is recognized.
Description of the drawings
Above-mentioned and/or additional aspect and advantage of the invention will become from the following description of the accompanying drawings of embodiments
Obviously and it is readily appreciated that, wherein：
Fig. 1 is the topology diagram that separate unit high-power DC power supply is used in existing testing scheme；
Fig. 2 is the topology diagram that more small power DC power sources in parallel are used in existing testing scheme；
Fig. 3 is the flow chart according to the grid-connected test method of the transverter to be measured of the embodiment of the present invention；
Fig. 4 is the topology diagram according to the grid-connected test device of the transverter to be measured of the embodiment of the present invention；
Fig. 5 is to be discharged to run according to the first transverter charge operation, the bidirectional DC power supply of one embodiment of the invention
Schematic diagram；
Fig. 6 be according to the first transverter charge operation of one embodiment of the invention, bidirectional DC power supply charge operation with
And the schematic diagram of transverter electric discharge operation to be measured；
Fig. 7 is according to the first transverter charge operation of one embodiment of the invention, the second transverter charge operation, two-way
Direct current power discharge is run and the schematic diagram of transverter to be measured electric discharge operation；
Fig. 8 is according to the first transverter charge operation of one embodiment of the invention, the second transverter charge operation, two-way
DC power supply charge operation and the schematic diagram of transverter to be measured electric discharge operation；
Fig. 9 be according to N number of transverter charge operation of one embodiment of the invention, bidirectional DC power supply charge operation and
The schematic diagram of transverter electric discharge operation to be measured；And
Figure 10 is according to N number of transverter of another embodiment of the present invention electric discharge operation, bidirectional DC power supply electric discharge operation
And the schematic diagram of transverter charge operation to be measured.
Specific implementation mode
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and is only used for explaining the present invention, and is not construed as limiting the claims.
Following disclosure provides many different embodiments or example is used for realizing the different structure of the present invention.For letter
Change disclosure of the invention, hereinafter the component of specific examples and setting are described.Certainly, they are merely examples, and
It is not intended to limit the present invention.In addition, the present invention can in different examples repeat reference numerals and/or letter.It is this heavy
It is for purposes of simplicity and clarity, itself not indicate the relationship between discussed various embodiments and/or setting again.This
Outside, the present invention provides various specific techniques and material example, but those of ordinary skill in the art may realize that
The applicable property of other techniques and/or the use of other materials.In addition, fisrt feature described below second feature it
The structure of "upper" may include the embodiment that the first and second features are formed as being in direct contact, and can also include other feature shape
At the embodiment between the first and second features, such first and second feature may not be to be in direct contact.
In the description of the present invention, it should be noted that unless otherwise specified and limited, term " installation ", " connected ",
" connection " shall be understood in a broad sense, for example, it may be mechanical connection or electrical connection, can also be the connection inside two elements, it can
, can also indirectly connected through an intermediary, for the ordinary skill in the art to be to be connected directly, it can basis
Concrete condition understands the concrete meaning of above-mentioned term.
With reference to the accompanying drawings come describe the transverter to be measured proposed according to embodiments of the present invention grid-connected test method and wait for
Survey the grid-connected test device of transverter.
Fig. 3 is the flow chart according to the grid-connected test method of the transverter to be measured of the embodiment of the present invention.Fig. 4 is according to this hair
The topology diagram of the grid-connected test device of the transverter to be measured of bright embodiment.Wherein, as shown in figure 4, the transverter to be measured
Grid-connected test device includes bidirectional DC power supply and N number of transverter, after N number of transverter parallel connection with the bidirectional DC power supply
Parallel connection, exchange side, that is, AC of the exchange side, that is, sides AC and the bidirectional DC power supply of each transverter in N number of transverter
Side is connected to power grid, DC side, that is, DC of the DC side, that is, sides DC and the bidirectional DC power supply of each transverter after being connected
Side is connected to the DC side of the transverter to be measured after being connected, the exchange side of the transverter to be measured is connected with the power grid,
In, N is the integer more than or equal to 2.As shown in figure 3, the grid-connected test method of the transverter to be measured of the embodiment of the present invention include with
Lower step：
S1, control bidirectional DC power supply starts so that bidirectional DC power supply is N number of transverter and transverter to be measured power supply.
That is, control bidirectional DC power supply first starts, make its output that can provide N number of transverter and the change of current to be measured
The DC voltage of device work.Wherein, the power grade of N number of transverter may be the same or different.
S2 controls N number of transverter according to the rated power of the rated power of bidirectional DC power supply and transverter to be measured and waits for
It surveys transverter accordingly to start, until transverter to be measured is with the rated power operation of transverter to be measured.
In an embodiment of the present invention, the transverter to be measured includes institute with the rated power operation of the transverter to be measured
Transverter to be measured is stated with the rated power electric discharge operation of the transverter to be measured and charge operation.Wherein, it should be noted that fill
Electricity operation refers to that energy is converted from exchange side to DC side, and electric discharge operation refers to that energy is converted from direct current side to exchange side.
According to one embodiment of present invention, according to the rated power of the bidirectional DC power supply and the transverter to be measured
Rated power control N number of transverter and the transverter to be measured and accordingly start, specifically include following below scheme：
S11, the first transverter controlled in N number of transverter starts, and controls first transverter with the first work(
Rate such as bKW charge operations, wherein the bidirectional DC power supply electric discharge operation, electric discharge operation power are aKW, and described double
It is more than or equal to first power to the rated power of DC power supply, it is specific as shown in figure 5, Ia=Ib at this time.
S12, the control transverter to be measured starts, and controls the transverter to be measured with first power and described pair
The sum of charge operation power to DC power supply is (a+b) KW electric discharge operations, wherein the bidirectional DC power supply is automatically by discharging
Operation is switched to charge operation, and charge operation power is aKW, specific as shown in fig. 6, I=Ia+Ib at this time.
S13, the second transverter controlled in N number of transverter starts, and controls second transverter with the second work(
Rate such as cKW charge operations, wherein the bidirectional DC power supply is switched to electric discharge operation by charge operation automatically, specific such as Fig. 7
It is shown, I=Ib+Ic-Ia at this time.
S14, control the transverter to be measured electric discharge operation power increase to first power, second power with
The sum of charge operation power of the bidirectional DC power supply is (a+b+c) KW, wherein the bidirectional DC power supply is automatically by discharging
Operation is switched to charge operation, specific as shown in figure 8, I=Ia+Ib+Ic at this time.
In the present embodiment, transverter not actuated in N number of transverter is controlled to open successively according to step S13 and S14
Dynamic operation, until the electric discharge operation power of the transverter to be measured reaches the rated power of the transverter to be measured.That is,
As shown in figure 9, the electric discharge of transverter to be measured operation power is finally increased to (a+b+c+ ...+n) KW, realize that transverter to be measured is pressed
It discharges and runs according to its rated power, at this time I=Ia+Ib+Ic+ ...+In.
Therefore, it is i.e. high-power that transverter to be measured may be implemented in the grid-connected test method of the transverter to be measured of the embodiment of the present invention
The electric discharge of transverter runs grid-connected test.
According to another embodiment of the invention, according to the rated power of the bidirectional DC power supply and the change of current to be measured
The rated power of device controls N number of transverter and the transverter to be measured accordingly starts, and specifically includes following below scheme：
S21, the first transverter controlled in N number of transverter starts, and controls first transverter with the first work(
Rate electric discharge operation, wherein the bidirectional DC power supply charge operation, and the rated power of the bidirectional DC power supply is more than or equal to
First power.
S22, the control transverter to be measured starts, and controls the transverter to be measured with first power and described pair
The sum of power charge operation is run to the electric discharge of DC power supply, wherein the bidirectional DC power supply is switched by charge operation automatically
It is run for electric discharge.
S23, the second transverter controlled in N number of transverter starts, and controls second transverter with the second work(
Rate electric discharge operation, wherein the bidirectional DC power supply is switched to charge operation by electric discharge operation automatically.
S24, control the transverter to be measured charge operation power increase to first power, second power with
The sum of electric discharge operation power of the bidirectional DC power supply, wherein the bidirectional DC power supply is switched to by charge operation automatically
Electric discharge operation.
Wherein, it controls transverter not actuated in N number of transverter and starts operation successively according to step S23 and S24, directly
Reach the rated power of the transverter to be measured to the charge operation power of the transverter to be measured.That is, such as Figure 10 institutes
Show, the charge operation power of transverter to be measured is finally increased into (a+b+c+ ...+n) KW, realizes transverter to be measured according to its volume
Determine power charge operation, at this time I=Ia+Ib+Ic+ ...+In.
Therefore, it is i.e. high-power that transverter to be measured may be implemented in the grid-connected test method of the transverter to be measured of the embodiment of the present invention
The grid-connected test of charge operation of transverter.
In an embodiment of the present invention, the power grade of N number of transverter is according to the power etc. of the transverter to be measured
The arbitrary selection of grade.Therefore, the transverter that the grid-connected test method of the transverter to be measured of the embodiment of the present invention uses is easy to obtain,
It can gather materials on the spot, using flexible, resources idle will not be caused to waste.
In conclusion the grid-connected test method of the transverter to be measured of the embodiment of the present invention can by a bidirectional DC power supply and
N number of transverter, which is connected in parallel, to be applied in combination, and the power grade of N number of transverter can appoint according to the power grade of transverter to be measured
Meaning selection, and consistency is kept without hardware, while debugging in parallel need not be carried out, it can directly use.Also, it is double by one
It is not DC source made of special in parallel debugging to DC power supply and N number of transverter DC source being combined into that is connected in parallel, it is complete
After high-power transverter debugging test to be measured, combo architectures can directly dismantle and separately use it for anything else, flexibly and easily.
The grid-connected test method of transverter to be measured according to the ... of the embodiment of the present invention passes through N number of transverter and bidirectional, dc electricity
The operation power of transverter to be measured is gradually increased to realize the grid-connected test to transverter to be measured in the mode of source parallel combination, drop
The low demand to high-power DC power supply, reduces cost；Also, it can gather materials on the spot and directly use transverter, it is convenient and efficient,
Cost is saved, that is, is used for making the transverter being applied in combination being easy to obtain, different capacity, different hardware structure transverter
It can use, transverter to be tested can be even used for being applied in combination when volume production, hardware aspect is not necessarily to be group
The test structure of conjunction adds anything, and without carrying out debugging in parallel, greatly saves the time, reduce cost, improve
Production capacity；In addition it applies flexibly, resources idle will not be caused to waste, that is, use is combined when needs, when unwanted
It can dismantle at any time to the use of other aspects, the investment to fixed assets can be reduced.
As shown in figure 4, the grid-connected test device of the transverter to be measured of the embodiment of the present invention includes：Bidirectional DC power supply 101
With N number of transverter 201,202 ..., 20N and control module (not shown).
Wherein, N number of transverter 201,202 ..., it is in parallel with bidirectional DC power supply 101 after 20N parallel connections, N number of transverter 201,
202 ..., the exchange side of each transverter in 20N, that is, sides AC connect after being connected with the exchange side of bidirectional DC power supply 101, that is, sides AC
It is connected to power grid 10, DC side, that is, sides DC of each transverter are connected to be measured after being connected with the DC side of bidirectional DC power supply 101
The exchange side of the DC side of transverter 20, transverter 20 to be measured is connected with the power grid, wherein N is the integer more than or equal to 2.
The control module start for controlling the bidirectional DC power supply so that the bidirectional DC power supply be N number of transverter and
The transverter power supply to be measured, and according to the rated power of the rated power of the bidirectional DC power supply and the transverter to be measured
It controls N number of transverter and the transverter to be measured accordingly starts, until the transverter to be measured is with the transverter to be measured
Rated power operation.
In an embodiment of the present invention, the transverter to be measured includes institute with the rated power operation of the transverter to be measured
Transverter to be measured is stated with the rated power electric discharge operation of the transverter to be measured and charge operation.Wherein, it should be noted that fill
Electricity operation refers to that energy is converted from exchange side to DC side, and electric discharge operation refers to that energy is converted from direct current side to exchange side.
According to one embodiment of present invention, as shown in Figures 5 to 9, the control module is according to bidirectional, dc electricity
The rated power of the rated power in source and the transverter to be measured controls N number of transverter and the transverter to be measured accordingly opens
When dynamic, the control module control N number of transverter 201,202 ..., the first transverter such as transverter 201 in 20N start,
And the first transverter such as transverter 201 is controlled with the first power such as bKW charge operations, wherein bidirectional DC power supply 101 is put
Electricity operation, electric discharge operation power is aKW, and the rated power of the bidirectional DC power supply is more than or equal to first power,
It is specific as shown in figure 5, Ia=Ib at this time.The control module also controls transverter 20 to be measured and starts, and controls transverter to be measured
20 are run with the sum of charge operation power of first power and the bidirectional DC power supply i.e. (a+b) KW electric discharges, wherein double
Charge operation is switched to by electric discharge operation automatically to DC power supply 101, charge operation power is aKW, it is specific as shown in fig. 6,
I=Ia+Ib at this time.The control module also control N number of transverter 201,202 ..., the second transverter such as change of current in 20N
Device 202 starts, and controls the second transverter such as transverter 202 with the second power such as cKW charge operations, wherein two-way straight
Galvanic electricity source 101 is switched to electric discharge operation by charge operation automatically, specific as shown in fig. 7, I=Ib+Ic-Ia at this time.The control
Module also control transverter 20 to be measured electric discharge operation power increase to first power, second power with it is described two-way
The sum of charge operation power of DC power supply is (a+b+c) KW, wherein bidirectional DC power supply 101 is automatically by electric discharge operation switching
It is specific as shown in figure 8, I=Ia+Ib+Ic at this time for charge operation.Wherein, the control module also controls N number of transverter
201,202 ..., transverter not actuated in 20N starts operation successively, until the electric discharge operation power of transverter 20 to be measured reaches
The rated power of the transverter to be measured, in other words, as shown in figure 9, finally increasing the electric discharge of transverter 20 to be measured operation power
To (a+b+c+ ...+n) KW, realize that transverter 20 to be measured discharges according to its rated power and run, at this time I=Ia+Ib+Ic+ ...+
In。
According to another embodiment of the invention, the control module according to the rated power of the bidirectional DC power supply and
When rated power control N number of transverter of the transverter to be measured and the transverter to be measured accordingly start, the control
Module controls the startup of the first transverter in N number of transverter, and controls first transverter and transported with the first power discharge
Row, wherein the bidirectional DC power supply charge operation, and the rated power of the bidirectional DC power supply is more than or equal to described first
Power；The control module also controls the transverter to be measured and starts, and controls the transverter to be measured with first power
Electric discharge with the bidirectional DC power supply runs the sum of power charge operation, wherein the bidirectional DC power supply is automatically by charging
Operation is switched to electric discharge operation；The control module also controls the startup of the second transverter in N number of transverter, and controls institute
It states the second transverter to run with the second power discharge, wherein the bidirectional DC power supply is switched to charging by electric discharge operation automatically
Operation；The charge operation power that the control module also controls the transverter to be measured increases to first power, described
The sum of two power and the electric discharge operation power of the bidirectional DC power supply, wherein the bidirectional DC power supply is transported by charging automatically
Row is switched to electric discharge operation；Wherein, the control module controls transverter not actuated in N number of transverter and starts fortune successively
Row, until the charge operation power of the transverter to be measured reaches the rated power of the transverter to be measured.Finally, such as Figure 10 institutes
Show, the charge operation power of transverter to be measured is increased into (a+b+c+ ...+n) KW, realizes transverter to be measured according to its specified work(
Rate charge operation, at this time I=Ia+Ib+Ic+ ...+In.
In an embodiment of the present invention, the power grade of N number of transverter is according to the power etc. of the transverter to be measured
The arbitrary selection of grade.
The grid-connected test device of transverter to be measured according to the ... of the embodiment of the present invention, by by N number of transverter and bidirectional, dc
Power sources in parallel is applied in combination that the operation power of transverter to be measured is gradually increased to realize the grid-connected test to transverter to be measured, drops
The low demand to high-power DC power supply, reduces cost；Also, it can gather materials on the spot and directly use transverter, it is convenient and efficient,
Cost is saved, that is, is used for making the transverter being applied in combination being easy to obtain, different capacity, different hardware structure transverter
It can use, transverter to be tested can be even used for being applied in combination when volume production, hardware aspect is without addition
Any part, and without carrying out debugging in parallel, greatly save the time, reduce cost, improve production capacity；In addition spirit is applied
It is living, resources idle will not be caused to waste, that is, be combined use when needs, can dismantle at any time when unwanted to
The use of other aspects can reduce the investment to fixed assets.
Any process described otherwise above or method description are construed as in flow chart or herein, and expression includes
It is one or more for realizing specific logical function or process the step of executable instruction code module, segment or portion
Point, and the range of the preferred embodiment of the present invention includes other realization, wherein can not press shown or discuss suitable
Sequence, include according to involved function by it is basic simultaneously in the way of or in the opposite order, to execute function, this should be of the invention
Embodiment person of ordinary skill in the field understood.
Expression or logic and/or step described otherwise above herein in flow charts, for example, being considered use
In the order list for the executable instruction for realizing logic function, may be embodied in any computer-readable medium, for
Instruction execution system, device or equipment (system of such as computer based system including processor or other can be held from instruction
The instruction fetch of row system, device or equipment and the system executed instruction) it uses, or combine these instruction execution systems, device or set
It is standby and use.For the purpose of this specification, " computer-readable medium " can any can be included, store, communicating, propagating or passing
Defeated program is for instruction execution system, device or equipment or the dress used in conjunction with these instruction execution systems, device or equipment
It sets.The more specific example (non-exhaustive list) of computer-readable medium includes following：Electricity with one or more wiring
Interconnecting piece (electronic device), portable computer diskette box (magnetic device), random access memory (RAM), read-only memory
(ROM), erasable edit read-only storage (EPROM or flash memory), fiber device and portable optic disk is read-only deposits
Reservoir (CDROM).In addition, computer-readable medium can even is that the paper that can print described program on it or other are suitable
Medium, because can be for example by carrying out optical scanner to paper or other media, then into edlin, interpretation or when necessary with it
His suitable method is handled electronically to obtain described program, is then stored in computer storage.
It should be appreciated that each section of the present invention can be realized with hardware, software, firmware or combination thereof.Above-mentioned
In embodiment, software that multiple steps or method can in memory and by suitable instruction execution system be executed with storage
Or firmware is realized.It, and in another embodiment, can be under well known in the art for example, if realized with hardware
Any one of row technology or their combination are realized：With the logic gates for realizing logic function to data-signal
Discrete logic, with suitable combinational logic gate circuit application-specific integrated circuit, programmable gate array (PGA), scene
Programmable gate array (FPGA) etc..
Those skilled in the art are appreciated that realize all or part of step that above-described embodiment method carries
Suddenly it is that relevant hardware can be instructed to complete by program, the program can be stored in a kind of computer-readable storage medium
In matter, which includes the steps that one or a combination set of embodiment of the method when being executed.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing module, it can also
That each unit physically exists alone, can also two or more units be integrated in a module.Above-mentioned integrated mould
The form that hardware had both may be used in block is realized, can also be realized in the form of software function module.The integrated module is such as
Fruit is realized in the form of software function module and when sold or used as an independent product, can also be stored in a computer
In read/write memory medium.
Storage medium mentioned above can be read-only memory, disk or CD etc..
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
Centainly refer to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any
One or more embodiments or example in can be combined in any suitable manner.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of variations, modification, replace
And modification, the scope of the present invention is by appended claims and its equivalent limits.
Claims (6)
1. a kind of grid-connected test method of transverter to be measured, which is characterized in that the grid-connected test device packet of the transverter to be measured
Bidirectional DC power supply and N number of transverter are included, it is in parallel with the bidirectional DC power supply after N number of transverter parallel connection, it is described N number of to change
The exchange side of each transverter in stream device is connected to power grid after being connected with the exchange side of the bidirectional DC power supply, described each
The DC side of transverter is connected to the DC side of the transverter to be measured, institute after being connected with the DC side of the bidirectional DC power supply
The exchange side for stating transverter to be measured is connected with the power grid, wherein N is the integer more than or equal to 2, the grid-connected test method packet
Include following steps：
The bidirectional DC power supply is controlled to start so that the bidirectional DC power supply is N number of transverter and the change of current to be measured
Device is powered；
N number of transverter is controlled according to the rated power of the rated power of the bidirectional DC power supply and the transverter to be measured
Accordingly start with the transverter to be measured, until the transverter to be measured is with the rated power operation of the transverter to be measured,
In, the transverter to be measured with the rated power operation of the transverter to be measured includes the transverter to be measured to be measured to be changed with described
Rated power electric discharge operation and the charge operation of device are flowed, also, according to the rated power of the bidirectional DC power supply and described is waited for
The rated power for surveying transverter controls N number of transverter and the transverter to be measured accordingly starts, and specifically includes：
S11, the first transverter controlled in N number of transverter starts, and controls first transverter and filled with the first power
Electricity operation, wherein the bidirectional DC power supply electric discharge operation, and the rated power of the bidirectional DC power supply is more than or equal to described
First power；
S12, the control transverter to be measured start, and control the transverter to be measured with first power with it is described two-way straight
The sum of the charge operation power in galvanic electricity source electric discharge operation, wherein the bidirectional DC power supply is switched to by electric discharge operation automatically to be filled
Electricity operation；
S13, the second transverter controlled in N number of transverter starts, and controls second transverter and filled with the second power
Electricity operation, wherein the bidirectional DC power supply is switched to electric discharge operation by charge operation automatically；
S14, control the transverter to be measured electric discharge operation power increase to first power, second power with it is described
The sum of charge operation power of bidirectional DC power supply, wherein the bidirectional DC power supply is switched to charging by electric discharge operation automatically
Operation；
Wherein, it controls transverter not actuated in N number of transverter and starts operation successively according to step S13 and S14, until institute
The electric discharge operation power for stating transverter to be measured reaches the rated power of the transverter to be measured.
2. the grid-connected test method of transverter to be measured as described in claim 1, which is characterized in that according to bidirectional, dc electricity
The rated power of the rated power in source and the transverter to be measured controls N number of transverter and the transverter to be measured accordingly opens
It is dynamic, further include specifically：
S21, the first transverter controlled in N number of transverter starts, and controls first transverter and put with the first power
Electricity operation, wherein the bidirectional DC power supply charge operation, and the rated power of the bidirectional DC power supply is more than or equal to described
First power；
S22, the control transverter to be measured start, and control the transverter to be measured with first power with it is described two-way straight
The sum of the electric discharge operation power in galvanic electricity source charge operation, wherein the bidirectional DC power supply is switched to by charge operation automatically to be put
Electricity operation；
S23, the second transverter controlled in N number of transverter starts, and controls second transverter and put with the second power
Electricity operation, wherein the bidirectional DC power supply is switched to charge operation by electric discharge operation automatically；
S24, control the transverter to be measured charge operation power increase to first power, second power with it is described
The sum of electric discharge operation power of bidirectional DC power supply, wherein the bidirectional DC power supply is switched to electric discharge by charge operation automatically
Operation；
Wherein, it controls transverter not actuated in N number of transverter and starts operation successively according to step S23 and S24, until institute
The charge operation power for stating transverter to be measured reaches the rated power of the transverter to be measured.
3. the grid-connected test method of transverter to be measured as claimed in claim 1 or 2, which is characterized in that N number of transverter
Power grade is arbitrarily selected according to the power grade of the transverter to be measured.
4. a kind of grid-connected test device of transverter to be measured, which is characterized in that including：
Bidirectional DC power supply；
N number of transverter, in parallel with the bidirectional DC power supply after N number of transverter parallel connection, each of described N number of transverter
The exchange side of transverter is connected to power grid, the direct current of each transverter after being connected with the exchange side of the bidirectional DC power supply
Side is connected to the DC side of the transverter to be measured, the transverter to be measured after being connected with the DC side of the bidirectional DC power supply
Exchange side be connected with the power grid, wherein N is integer more than or equal to 2；
Control module, the control module start for controlling the bidirectional DC power supply so that the bidirectional DC power supply is institute
It states N number of transverter and the transverter to be measured power supply, and according to the rated power of the bidirectional DC power supply and described to be measured changes
The rated power of stream device controls N number of transverter and the transverter to be measured and accordingly starts, until the transverter to be measured with
The rated power operation of the transverter to be measured, wherein the transverter to be measured is transported with the rated power of the transverter to be measured
Row includes the transverter to be measured with the rated power electric discharge operation of the transverter to be measured and charge operation, and the control
Module controls N number of transverter according to the rated power of the bidirectional DC power supply and the rated power of the transverter to be measured
When accordingly starting with the transverter to be measured,
The control module controls the startup of the first transverter in N number of transverter, and controls first transverter with the
One power charge operation, wherein the bidirectional DC power supply electric discharge operation, and the rated power of the bidirectional DC power supply is more than
Equal to first power；
The control module also controls the transverter to be measured and starts, and control the transverter to be measured with first power with
The sum of charge operation power of bidirectional DC power supply electric discharge operation, wherein the bidirectional DC power supply is transported by electric discharge automatically
Row is switched to charge operation；
The control module also control the second transverter in N number of transverter startup, and control second transverter with
Second power charge operation, wherein the bidirectional DC power supply is switched to electric discharge operation by charge operation automatically；
The electric discharge operation power that the control module also controls the transverter to be measured increases to first power, described second
The sum of the charge operation power of power and the bidirectional DC power supply, wherein the bidirectional DC power supply is run by electric discharge automatically
It is switched to charge operation；
Wherein, the control module also controls transverter not actuated in N number of transverter and starts operation successively, until described
The electric discharge operation power of transverter to be measured reaches the rated power of the transverter to be measured.
5. the grid-connected test device of transverter to be measured as claimed in claim 4, which is characterized in that the control module is according to institute
The rated power of the rated power and the transverter to be measured of stating bidirectional DC power supply controls N number of transverter and described to be measured
When transverter accordingly starts,
The control module controls the startup of the first transverter in N number of transverter, and controls first transverter with the
One power discharge is run, wherein the bidirectional DC power supply charge operation, and the rated power of the bidirectional DC power supply is more than
Equal to first power；
The control module also controls the transverter to be measured and starts, and control the transverter to be measured with first power with
The sum of the electric discharge operation power of bidirectional DC power supply charge operation, wherein the bidirectional DC power supply is transported by charging automatically
Row is switched to electric discharge operation；
The control module also control the second transverter in N number of transverter startup, and control second transverter with
Second power discharge is run, wherein the bidirectional DC power supply is switched to charge operation by electric discharge operation automatically；
The charge operation power that the control module also controls the transverter to be measured increases to first power, described second
The sum of power and the electric discharge operation power of the bidirectional DC power supply, wherein the bidirectional DC power supply is automatically by charge operation
It is switched to electric discharge operation；
Wherein, the control module controls transverter not actuated in N number of transverter and starts operation successively, until described wait for
The charge operation power for surveying transverter reaches the rated power of the transverter to be measured.
6. the grid-connected test device of transverter to be measured as described in claim 4 or 5, which is characterized in that N number of transverter
Power grade is arbitrarily selected according to the power grade of the transverter to be measured.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410419733.9A CN105467231B (en) | 2014-08-22 | 2014-08-22 | The grid-connected test method and device of transverter to be measured |
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| CN201410419733.9A CN105467231B (en) | 2014-08-22 | 2014-08-22 | The grid-connected test method and device of transverter to be measured |
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| CN105467231B true CN105467231B (en) | 2018-09-07 |
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| CN112611935A (en) * | 2020-12-30 | 2021-04-06 | 国网上海市电力公司 | New energy grid-connected dynamic characteristic simulation test system |
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| CN201867482U (en) * | 2010-10-28 | 2011-06-15 | 比亚迪股份有限公司 | Aging device for current converter |
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| AT504200B1 (en) * | 2006-09-04 | 2010-05-15 | Fronius Int Gmbh | METHOD FOR REGULATING INTERRUPTERS |
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| CN201867482U (en) * | 2010-10-28 | 2011-06-15 | 比亚迪股份有限公司 | Aging device for current converter |
| CN202486227U (en) * | 2012-01-17 | 2012-10-10 | 上海雷诺尔电力自动化有限公司 | Back-to-back detection system suitable for chain type transverter |
| CN103248254A (en) * | 2013-05-09 | 2013-08-14 | 中国矿业大学 | Pre-charging system and method for modular multilevel inverter |
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Application publication date: 20160406 Assignee: BYD AUTOMOBILE INDUSTRY CO., LTD. Assignor: Biyadi Co., Ltd. Contract record no.: 2017440020069 Denomination of invention: To-be-tested converter grid-connected test method and to-be-tested converter grid-connected test device License type: Common License Record date: 20170828 |
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