CN110365008A - Electric power electric transformer DC port current transformer position optimization configuration method - Google Patents
Electric power electric transformer DC port current transformer position optimization configuration method Download PDFInfo
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- CN110365008A CN110365008A CN201910519397.8A CN201910519397A CN110365008A CN 110365008 A CN110365008 A CN 110365008A CN 201910519397 A CN201910519397 A CN 201910519397A CN 110365008 A CN110365008 A CN 110365008A
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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
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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
- H02J3/36—Arrangements for transfer of electric power between ac networks via a high-tension dc link
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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
- H02J3/36—Arrangements for transfer of electric power between ac networks via a high-tension dc link
- H02J2003/365—Reducing harmonics or oscillations in HVDC
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/60—Arrangements for transfer of electric power between AC networks or generators via a high voltage DC link [HVCD]
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Abstract
The invention discloses a kind of electric power electric transformer DC port current transformer position optimization configuration method, including step, step 1 obtains electric power electric transformer equipment and route design parameter；Step 2 calculates discharge loop resonance current using the equipment and route design parameter；Step 3 compares discharge loop resonance current peak value, determines electric power electric transformer DC port current transformer position.The present invention carries out analysis by the current oscillation current waveform to electric power electric transformer DC side; give DC side sensor mounting location optimum choice method; it is possible to prevente effectively from guaranteeing the grid-connected work of electric power electric transformer DC port normal reliable since DC line closes the switch DC line current protection caused by the response concussion electric current of moment.
Description
Technical field
The present invention relates to generations of electricity by new energy and micro-capacitance sensor technical field, and in particular to a kind of electric power electric transformer DC terminal
Mouth current transformer position optimization configuration method.
Background technique
Under the efficient energy transition driving of green energy conservation, alternating current-direct current energy intelligence configuration technology gives full play to power grid
It distributes advantage rationally, is the following intelligence efficiently using clean energy resource to meet the growing diversified energy-consuming demand of the people
One of the important trend of energy power distribution network development.With electric power electric transformer (Power Electronic Transformer, PET)
It is exactly to adapt to this trend innovation research and development for the novel AC-DC power distribution network of core.
Compared to traditional transformer, electric power electric transformer also has energy flexible in addition to being able to achieve alternating current-direct current transformation of electrical energy
The multiple functions such as regulation, the isolation of resource flexible access, power quality controlling, malfunction monitoring.Realize alternating current-direct current rack in region
Interconnect, support polymorphic type distributed generation resource and alternating current-direct current load flexible access, reduce multiple transformer ac-dc conversion
Link.
In order to guarantee electric power electric transformer DC port output voltage stabilization, usually can all there be a big pressure stabilizing electricity
Hold, and guarantee electric power electric transformer failure removal quick response, DC port can generally be switched equipped with DC solid, and solid-state is opened
Pass is to realize that DC grid fault element quickly isolates, constructs the key equipment of DC grid.When electric power electric transformer direct current
Port voltage is it has been established that be closed moment in solid-state switch, the electric capacity of voltage regulation of the DC port of electric power electric transformer can be to mother
Line charges, in the case where considering line impedance quality event, due to also there is an electric capacity of voltage regulation inside DC port solid-state switch,
Solid-state switch capacitor can give busbar charging first, and electric power electric transformer DC port electric capacity of voltage regulation is filled to solid-state switch capacitor again
Electricity may generate oscillation, will lead to the line of electric power electric transformer DC port in this way since the two charging rate is inconsistent
It is excessive that road current sensor measures current peak, and accidentally protection leads to complete machine locking, contactor separating brake, certain alternating current-direct current work to line current
Such resonance phenomena has been also detected that in DC port when journey scene electric power electric transformer is tested.
It is concentrated mainly on topological mode and control field about electric power electric transformer research, rarely has scholar both at home and abroad at present
Power electronics DC port line current sensor position is studied, the present invention is right using rlc circuit series connection response characteristic
The current oscillation waveform for two discharge loops that electric power electric transformer DC side is made up of solid-state switch carries out analysis, and gives
Current transformer measuring point optimum option principle is gone out.
Summary of the invention
To solve deficiency in the prior art, the present invention provides a kind of electric power electric transformer DC port current transformer
Position optimization configuration method solves electric power electric transformer DC port electric capacity of voltage regulation, solid-state switch capacitor charging speed not
Oscillation may be unanimously generated, line current is caused since DC port current sensor position is incorrect, and accidentally protection causes
The problem of complete machine locking, contactor separating brake.
In order to achieve the above objectives, the present invention adopts the following technical scheme: a kind of electric power electric transformer DC port is electric
Current transformer position optimization configuration method, it is characterised in that:
Step 1 obtains electric power electric transformer equipment and route design parameter；
Step 2 calculates discharge loop resonance current using the equipment and route design parameter；
Step 3 compares discharge loop resonance current peak value, determines electric power electric transformer DC port current transformer
Position.
A kind of electric power electric transformer DC port current transformer position optimization configuration method above-mentioned, it is characterized in that:
The electric power electric transformer equipment and route design parameter include: electronic transformer DC port capacitor C1, in solid-state switch
Portion capacitor C2, DC line equivalent resistance R, DC line equivalent inductance L, PET port voltage Uc1, DC port load Rload。
A kind of electric power electric transformer DC port current transformer position optimization configuration method above-mentioned, it is characterized in that:
The step 2, detailed process are as follows:
By by electric power electric transformer DC port capacitor C1, DC line equivalent inductance L, DC line equivalent resistance
R, the instantaneous voltage of the KVL equation of the discharge loop 1 of solid-state switch internal capacitance C2 composition and solid-state switch internal capacitance C2
Current relationship acquires the instantaneous voltage u of the resonance current i (t) and solid-state switch internal capacitance C2 of discharge loop 1C2(t), by
Solid-state switch internal capacitance C2, DC port load RloadThe electric current of the discharge loop 2 of composition is uC2(t)/Rload。
A kind of electric power electric transformer DC port current transformer position optimization configuration method above-mentioned, it is characterized in that:
The electric power electric transformer DC port C1 is equivalent at a DC power supply.
A kind of electric power electric transformer DC port current transformer position optimization configuration method above-mentioned, it is characterized in that:
The instantaneous voltage u of the resonance current i (t) and solid-state switch internal capacitance C2 of the discharge loop 1C2(t), specific solution procedure
Are as follows:
The KVL equation of discharge loop 1 are as follows:
Ri(t)+uL(t)+uC2(t)=uC1(t) (1)
In formula (1), uLIt (t) is line equivalent voltage across the inductor instantaneous value, uC2It (t) is capacitance voltage wink in solid-state switch
Duration, uC1It (t) is Equivalent DC power supply instantaneous value；
Formula (2) substitution formula (1) is obtained:
Its zero input response equation is formula (4):
The characteristic equation of formula (4) is formula (5):
LC2s2+RC2S+1=0 (5)
The characteristic root for obtaining formula (5) is formula (6):
Wherein, s is the complex variable in Laplace transform, and α is 1 current attenuation coefficient of discharge circuit, ω0For discharge loop
1 resonance angular frequency, ωdFor the decaying resonance angular frequency of discharge loop 1, s1、s2It is characteristic root, j is imaginary number；
The solution for solving formula (4) is formula (11):
In formula (11) K andFor formula (12) and formula (13):
K in formula (12) and formula (13)1、K2By primary condition i (0) and uC2(0) it determines:
K1=uC2(0) (14)
Assuming that primary condition is i (0)=0, uC2(0)=0, then:
K1=0 (16)
U is obtained by formula (11) and formula (2) solutionC2(t) and i (t).
A kind of electric power electric transformer DC port current transformer position optimization configuration method above-mentioned, it is characterized in that:
The step 3, detailed process are as follows:
Compare two discharge loop resonance current peak value Max | i (t) | and Max | uC2(t)/Rload| numerical values recited works as Max |
i(t)|>Max|uC2(t)/Rload| when current sensor be mounted between solid-state switch and DC load, otherwise by current sense
Device is mounted on position between electric power electric transformer DC port and solid-state switch.
Advantageous effects of the invention: the present invention passes through the electricity that is likely to form to electric power electric transformer DC port
Analysis of the oscillation is flowed, RLC series resonance theory analysis is established to the discharge loop between electric power electric transformer and solid-state switch, is given
DC side sensor mounting location optimum choice method is gone out, it is possible to prevente effectively from since DC line closes the switch the sound of moment
DC line current protection caused by electric current should be shaken, guarantees the grid-connected work of electric power electric transformer DC port normal reliable.
Detailed description of the invention
Fig. 1 is electric power electric transformer topological structure；
Fig. 2 is electric power electric transformer DC port schematic diagram；
Fig. 3 is solid-state switch topological diagram；
Fig. 4 is DC port discharge loop schematic diagram；
Fig. 5 is that DC side simplifies circuit diagram；
Fig. 6 is the series connection response schematic diagram of discharge loop 1；
Fig. 7 is DC side electric current point position schematic diagram.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.Following embodiment is only used for clearly illustrating the present invention
Technical solution, and not intended to limit the protection scope of the present invention.
A kind of electric power electric transformer DC port current transformer position optimization configuration method, comprising steps of
Step 1 obtains electric power electric transformer equipment and route design parameter；
As shown in figure 4, obtaining electric power electric transformer DC port capacitor C1, solid-state switch internal capacitance C2, AC line
Road equivalent resistance R, DC line equivalent inductance L, PET port voltage Uc, DC port load Rload。
Step 2 calculates discharge loop resonance current using the equipment and route design parameter；
Specifically: it is equivalent by electric power electric transformer DC port capacitor C1, DC line equivalent inductance L, DC line
The resonance current of the discharge loop 1 of resistance R, solid-state switch internal capacitance C2 composition is i (t), utilizes the KVL (base of discharge loop 1
That Hough voltage law) equation: Ri (t)+uL(t)+uC2(t)=uC1(t), andIt can be in the hope of electric discharge
The instantaneous voltage u of electric current i (t) and solid-state switch internal capacitance C2 in circuit 1C2(t), wherein t is the time；It is opened by solid-state
The anti-paralleled diode (inverse parallel is in solid-state switch line outlet) of pass, mechanical switch, DC port load RloadComposition is put
The electric current of electrical circuit 2 is uC2(t)/Rload；It, can not in the case where not considering its loss since anti-paralleled diode is access
Consider.
Step 3 compares discharge loop resonance current peak value, determines electric power electric transformer DC port current transformer
Position.
Specifically: compare two discharge loop resonance current peak value Max | i (t) | and Max | uC2(t)/Rload| numerical value is big
It is small, work as Max | i (t) | > Max | uC2(t)/Rload| when current sensor be mounted between solid-state switch and DC load in i.e. Fig. 7
2 position of measuring point, otherwise current sensor is mounted between electric power electric transformer DC port and solid-state switch in i.e. Fig. 7
1 position of measuring point.
Electric power electric transformer can convert combined-voltage freedom and flexibility, alternating current mesolow 10kV can be exchanged and be matched
Net is transformed into low pressure 750V direct current.
As shown in Figure 1, being a kind of electric power electric transformer (PET) topological structure of the invention, PET exchanges side and connects 10kV
Exchange, DC side connection ± 750V direct current, wherein H bridge is single-phase full bridge, and device uses IGBT (insulated gate bipolar transistor),
DAB is bidirectional active bridge (Double Active Bridge, DAB), is composed in series by two H bridges and a high frequency transformer.
It can be seen that this topology, which is actually one, seals in and go out (Input Series Output Parallel, ISOP) structure, make
With to exchange the equal component voltage of side H bridge series connection, each H bridge, which bears voltage stress, to be reduced, and DC voltage grade is low so in parallel defeated
Out, guarantee to increase power in the case that output voltage is certain, reduce DAB current stress.
Electric power electric transformer direct current side ports generally pass through bulky capacitor C1 and carry out pressure stabilizing, as shown in Figure 2.In order to guarantee electricity
Power electronic transformer DC port trouble isolation serviceability, it is usually solid in DC port installation since mechanical switch actuation time is slow
State switchs, and for solid-state switch topology as shown in figure 3, capacitor C2 capacitance is 4mF, VT is electronic power switch in this topology, uses
IGBT device, V are freewheeling diode.When normal work, VT is constantly on state, and VT is turned off under fault condition, when shutdown
Between only determined by device property, the Fault Isolation time generally can control within 50us.
Since electric power electric transformer DC port is usually all an electric capacity of voltage regulation, when two electric power electric transformers exist
(referred to and for situation, be directly connected to (parallel connection) and give load power supply simultaneously afterwards) when DC side is directly connected to, two capacitors due to
Initial voltage is unequal to have discharge loop.As in Fig. 4 electric power electric transformer 750V DC port load directly and solid-state
Switch connection accesses solid-state switch after electric power electric transformer completes starting charging, and electric capacity of voltage regulation C1 puts capacitor C2 formation
Electrical circuit 1, C2 forms discharge loop 2 to the port 750V load, as the discharge time constant τ 1 of discharge loop 1 and discharge loop 2
When unequal with τ 2, discharge loop 1 may form series resonance by line inductance L and solid-state switch DC port capacitor C2,
Pass through the two current sensors, that is, electric power electric transformer DC port and solid-state in Fig. 4 on discharge loop 1 and discharge loop 2
Two current sensors between switch, between solid-state switch and DC load can measure oscillating current.When oscillating current peak
When being worth excessive, the tripping of line current protection misoperation, complete machine locking may result in.
In order to further study electric power electric transformer DC port current oscillation characteristic, Fig. 4 can be reduced to 5, it can
To find out that for discharge loop 1 be exactly a RLC serial oscillation circuit.
When solid-state switch capacitor C2 is incorporated to electric power electric transformer 750V DC port, due to electric power electric transformer
Electric capacity of voltage regulation C1 is larger can be equivalent at a DC source uc1, rlc circuit series connection response analysis such as Fig. 6 is carried out to discharge loop 1
Shown, electric power electric transformer DC side simplifies the electric capacity of voltage regulation that circuit includes: the electric power electric transformer being sequentially connected in series
C1 Equivalent DC power supply uc1, line equivalent inductance L, line equivalent resistance R, capacitor C2 in solid-state switch.
KVL (Kirchhoff's second law) circuit equation can be provided according to Fig. 6:
Ri(t)+uL(t)+uC2(t)=uC1(t)(1)
In formula (1), R is line equivalent resistance, and i (t) is line current instantaneous value, uLIt (t) is line equivalent inductance both ends
Instantaneous voltage, Uc2It (t) is capacitance voltage instantaneous value in solid-state switch, uc1It (t) is Equivalent DC power supply uaInstantaneous value.
1 electric current of discharge loop can be obtained by capacitance voltage in solid-state switch:
It is available that formula (2) are substituted into formula (1):
It can be seen that formula (3) are a constant coefficient Nonhomogeneous Linear second order differential equations, zero input response equation is formula
(4):
The characteristic equation of formula (4) is formula (5):
LC2s2+RC2S+1=0 (5)
The feature radical (6) of available formula (5):
Wherein, s is the complex variable in Laplace transform, and α is 1 current attenuation coefficient of discharge circuit, and ω 0 is discharge loop
1 resonance angular frequency, ωdFor the decaying resonance angular frequency of discharge loop 1, s1、s2It is characteristic root, j is imaginary number；s1=-α+j ωd, s2
=-α-j ωd, s1,2 be the general designation symbol of two characteristic roots；
It is specifically defined and sees formula (7)-formula (9):
Since electric power electric transformer outlet is directly connected to solid-state switch, therefore route is small apart from short resistance, and generally less than 0.1
Ω may determine that underdamped oscillation characteristic is presented in discharge loop 1 by formula (10):
The solution that formula (4) can be solved is formula (11)
In formula (11) K andFor formula (12) and formula (13)
K in formula (12) and formula (13)1、K2By primary condition i (0) and uC2(0) it determines:
K1=uC2(0)(14)
Assuming that primary condition is i (0)=0, uC2(0)=0, then:
K1=0 (16)
U is obtained by formula (11) and formula (2) solutionC2(t) and i (t).The electric current of measuring point 1 and measuring point 2 in Fig. 7 is distinguished
For i (t) and uC2(t)/Rload；T=0 moment, 0 moment are switch closing moment；
Two measuring points in comparison diagram 7 compare electric discharge in order to avoid series resonance electric current leads to line current protection misoperation
Loop resonance current peak, works as Max | i (t) | > Max | and uC2(t)/Rload| when, the concussion electric current of discharge loop 1 is bigger, in order to keep away
Exempt from concussion electric current to cause to protect erroneous judgement, so current sensor, which should design, is mounted on measuring point 2, that is, uses the electricity of discharge loop 2
Stream represents port current.Conversely, the concussion electric current of discharge loop 2 is bigger, in order to avoid concussion electric current causes to protect erroneous judgement, institute
It should be designed with current sensor and be mounted on measuring point 1, i.e., represent port current with the electric current of discharge loop 1.
When electric power electric transformer DC port voltage it has been established that being closed moment, power electronics transformation in solid-state switch
The capacitor of the DC port of device can charge to bus, and in the case where considering line impedance quality event, DC port can generate vibration
It swings.The present invention is analyzed by the current oscillation being likely to form to electric power electric transformer DC port, to electric power electric transformer
Discharge loop between solid-state switch establishes RLC series resonance theory analysis, and it is excellent to give DC side sensor mounting location
Change selection method, it is possible to prevente effectively from since DC line closes the switch DC line electricity caused by the response concussion electric current of moment
Stream protection, guarantees the grid-connected work of electric power electric transformer DC port normal reliable.
It should be understood by those skilled in the art that, embodiments herein can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the application, which can be used in one or more,
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces
The form of product.
The application is referring to method, the process of equipment (system) and computer program product according to the embodiment of the present application
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and deformations can also be made, these improvement and deformations
Also it should be regarded as protection scope of the present invention.
Claims (6)
1. a kind of electric power electric transformer DC port current transformer position optimization configuration method, it is characterised in that: step 1,
Obtain electric power electric transformer equipment and route design parameter；
Step 2 calculates discharge loop resonance current using the equipment and route design parameter；
Step 3 compares discharge loop resonance current peak value, determines electric power electric transformer DC port current transformer position.
2. a kind of electric power electric transformer DC port current transformer position optimization configuration side according to claim 1
Method, it is characterized in that: the electric power electric transformer equipment and route design parameter include: electronic transformer DC port capacitor
C1, solid-state switch internal capacitance C2, DC line equivalent resistance R, DC line equivalent inductance L, PET port voltage Uc1, direct current
Port loads Rload。
3. a kind of electric power electric transformer DC port current transformer position optimization configuration side according to claim 2
Method, it is characterized in that: the step 2, detailed process are as follows:
By by electric power electric transformer DC port capacitor C1, DC line equivalent inductance L, DC line equivalent resistance R, solid
The KVL equation of the discharge loop 1 of state switch internal capacitor C2 composition and the instantaneous voltage electric current of solid-state switch internal capacitance C2
Relationship acquires the instantaneous voltage u of the resonance current i (t) and solid-state switch internal capacitance C2 of discharge loop 1C2(t), by solid-state
Switch internal capacitor C2, DC port load RloadThe electric current of the discharge loop 2 of composition is uC2(t)/Rload。
4. a kind of electric power electric transformer DC port current transformer position optimization configuration side according to claim 3
Method, it is characterized in that: the electric power electric transformer DC port C1 is equivalent at a DC power supply.
5. a kind of electric power electric transformer DC port current transformer position optimization configuration side according to claim 4
Method, it is characterized in that: the instantaneous voltage u of the resonance current i (t) of the discharge loop 1 and solid-state switch internal capacitance C2C2(t),
Specific solution procedure are as follows:
The KVL equation of discharge loop 1 are as follows:
Ri(t)+uL(t)+uC2(t)=uC1(t) (1)
In formula (1), uLIt (t) is line equivalent voltage across the inductor instantaneous value, uC2(t) instantaneous for capacitance voltage in solid-state switch
Value, uC1It (t) is Equivalent DC power supply instantaneous value；
Formula (2) substitution formula (1) is obtained:
Its zero input response equation is formula (4):
The characteristic equation of formula (4) is formula (5):
LC2s2+RC2S+1=0 (5)
The characteristic root for obtaining formula (5) is formula (6):
Wherein, s is the complex variable in Laplace transform, and α is 1 current attenuation coefficient of discharge circuit, ω0For 1 resonance of discharge loop
Angular frequency, ωdFor the decaying resonance angular frequency of discharge loop 1, s1、s2It is characteristic root, j is imaginary number；
The solution for solving formula (4) is formula (11):
In formula (11) K andFor formula (12) and formula (13):
K in formula (12) and formula (13)1、K2By primary condition i (0) and uC2(0) it determines:
K1=uC2(0) (14)
Assuming that primary condition is i (0)=0, uC2(0)=0, then:
K1=0 (16)
U is obtained by formula (11) and formula (2) solutionC2(t) and i (t).
6. a kind of electric power electric transformer DC port current transformer position optimization configuration side according to claim 3
Method, it is characterized in that: the step 3, detailed process are as follows:
Compare two discharge loop resonance current peak value Max | i (t) | and Max | uC2(t)/Rload| numerical values recited works as Max | i (t)
|>Max|uC2(t)/Rload| when current sensor be mounted between solid-state switch and DC load, otherwise current sensor is pacified
The position between electric power electric transformer DC port and solid-state switch.
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| CN201910519397.8A CN110365008B (en) | 2019-06-17 | 2019-06-17 | Power electronic transformer direct current port current transformer position optimization configuration method |
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| CN201910519397.8A CN110365008B (en) | 2019-06-17 | 2019-06-17 | Power electronic transformer direct current port current transformer position optimization configuration method |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108832825A (en) * | 2018-07-06 | 2018-11-16 | 华北电力大学 | A kind of multiport electric power electric transformer topology of high power density |
| CN108957307A (en) * | 2018-07-12 | 2018-12-07 | 国网湖北省电力有限公司电力科学研究院 | A kind of direct current change-over switch parameter of oscillation measurement method based on many reference amounts |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108832825A (en) * | 2018-07-06 | 2018-11-16 | 华北电力大学 | A kind of multiport electric power electric transformer topology of high power density |
| CN108957307A (en) * | 2018-07-12 | 2018-12-07 | 国网湖北省电力有限公司电力科学研究院 | A kind of direct current change-over switch parameter of oscillation measurement method based on many reference amounts |
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