CN108256217A - Numerical model analysis simulated power interface algorithm and device based on ideal transformer method - Google Patents
Numerical model analysis simulated power interface algorithm and device based on ideal transformer method Download PDFInfo
- Publication number
- CN108256217A CN108256217A CN201810045500.5A CN201810045500A CN108256217A CN 108256217 A CN108256217 A CN 108256217A CN 201810045500 A CN201810045500 A CN 201810045500A CN 108256217 A CN108256217 A CN 108256217A
- Authority
- CN
- China
- Prior art keywords
- impedance
- subsystem
- circuit
- digital simulation
- controlled source
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/30—Circuit design
- G06F30/36—Circuit design at the analogue level
- G06F30/367—Design verification, e.g. using simulation, simulation program with integrated circuit emphasis [SPICE], direct methods or relaxation methods
Landscapes
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Evolutionary Computation (AREA)
- Geometry (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The embodiment of the invention discloses a kind of numerical model analysis simulated power interface algorithms and device based on ideal transformer method.Digital simulation subsystem and physical analogy subsystem are carried out in advance in the present invention impedance-compensated, since the stable condition of ideal transformer method is that the impedance of physical analogy subsystem is more than the impedance of Digital Simulation subsystem, so compensate first negative resistance in Digital Simulation subsystem, physical analogy subsystem compensates first positive impedance, the absolute value of the impedance value of first negative impedance and the first positive impedance is all higher than or the half equal to the first impedance value, so that the impedance value of physical analogy subsystem is consistently greater than the impedance value of Digital Simulation subsystem, ensure the stability of system, it is insufficient to solve current ITM algorithm stabilities, the technical issues of accuracy and poor engineering adaptability.
Description
Technical field
The present invention relates to digital-to-analogue emulation field more particularly to a kind of numerical model analysis simulated powers based on ideal transformer method
Interface algorithm and device.
Background technology
Numerical model analysis simulated power interconnection technique is since its is high-power and outstanding advantages of rapidity, gradually as new energy
Grid-connected and micro-capacitance sensor and the important means of bulk power grid interaction simulation study.
Whole system is divided into two simulation subsystems by Hybrid Real Time Simulation, and one is realized with real-timedigital simulation,
Another is realized with physical simulation, forms what is be uniformly coordinated between real-timedigital simulation and physical simulation two subsystems
Boundary condition is to ensure that the basis that Hybrid Real Time Simulation system accurately emulates.
The purpose of digital physical mixed simulated power interface algorithm is to meet Digital Simulation subsystem and physical analogy simultaneously
The boundary condition of subsystem.Digital physical mixed simulated power interface algorithm is based on Substitution Theoren, is replaced with physics side interface is equivalent
For Digital Simulation side, digital side interface equivalent substitution physical analogy side, generally by complicated Equivalent Model in Digital Simulation subsystem
Middle realization, and the difference of different interface algorithms is exactly to be the difference of equivalent mode herein, current common interface algorithm is main
There are five types of：Ideal transformer method ITM (Ideal Transformer Model), time-varying first approximation method TFA (Time-
Variant First-order Approximation), model of power transmission system method TLM (Transmission Line
Model), damped impedance method DIM (Damping Impedance Model), partial circuit replica method PCD (Partial
Circuit Duplication)。
The model of wherein ITM algorithms is simple, and simulation accuracy height and analysis, which improve, conveniently becomes current engineering in practice
Preferred option, but ITM algorithm stabilities are limited, its accuracy and engineering adaptability can be impacted, and therefore, are resulted in and are worked as
The technical issues of preceding ITM algorithm stabilities are insufficient, accuracy and poor engineering adaptability.
Invention content
The present invention provides a kind of numerical model analysis simulated power interface algorithms and device based on ideal transformer method, solve
The technical issues of current ITM algorithm stabilities are insufficient, accuracy and poor engineering adaptability.
The present invention provides a kind of numerical model analysis simulated power interface algorithm based on ideal transformer method, including：
S1：The Digital Simulation subsystem of thevenin equivalent circuit form and physical analogy are established based on ideal transformer method
System, wherein, Digital Simulation subsystem includes Digital Simulation circuit and the first controlled source, and physical analogy subsystem includes physics
Analog circuit and the second controlled source, Digital Simulation circuit and the first controlled source are connected in series with, physical analogy circuit and second controlled
Source-series connection；
S2：The first impedance value of Digital Simulation subsystem is obtained by modal identification algorithm；
S3：First negative impedance is set between Digital Simulation circuit and the first controlled source, in physical analogy circuit and second
The first positive impedance is arranged in series between controlled source, wherein, the absolute value of the impedance value of the first negative impedance and the first positive impedance is
Second impedance value, the second impedance value are greater than or equal to the half of the first impedance value.
Preferably, it further includes：Step S4；
S4：Anticipatory control link is arranged in series between the first negative impedance and digital artificial circuit, is set in power frequency super
The amplitude gain of preceding correction link is 1, is delayed by the power frequency for measuring Hybrid Real Time Simulation system to anticipatory control link
Parameter adjusted.
Preferably, the first controlled source is VCCS, and the second controlled source is CCVS.
The present invention provides a kind of numerical model analysis simulated power interface arrangement based on ideal transformer method, including：
System modelling unit, for establishing the Digital Simulation subsystem of thevenin equivalent circuit form based on ideal transformer method
System and physical analogy subsystem, wherein, Digital Simulation subsystem includes Digital Simulation circuit and the first controlled source, physical analogy
Subsystem includes physical analogy circuit and the second controlled source, and Digital Simulation circuit and the first controlled source are connected in series with, physical analogy
Circuit and the second controlled source are connected in series with；
Impedance recognition unit, for obtaining the first impedance value of Digital Simulation subsystem by modal identification algorithm；
Impedance-compensated unit, for setting the first negative impedance between Digital Simulation circuit and the first controlled source, in physics
The first positive impedance is arranged in series between analog circuit and the second controlled source, wherein, the impedance of the first negative impedance and the first positive impedance
The absolute value of value is the second impedance value, and the second impedance value is greater than or equal to the half of the first impedance value.
Preferably, it further includes：Delay correction unit；
Delay correction unit, for being arranged in series anticipatory control link between the first negative impedance and digital artificial circuit,
The amplitude gain that anticipatory control link is set in power frequency is 1, is delayed by the power frequency for measuring Hybrid Real Time Simulation system
The parameter of anticipatory control link is adjusted.
Preferably, the first controlled source is VCCS, and the second controlled source is CCVS.
As can be seen from the above technical solutions, the present invention has the following advantages：
The present invention provides a kind of numerical model analysis simulated power interface algorithm based on ideal transformer method, including：S1：Base
The Digital Simulation subsystem of thevenin equivalent circuit form and physical analogy subsystem are established in ideal transformer method, wherein, number
Word simulation subsystem includes Digital Simulation circuit and the first controlled source, and physical analogy subsystem includes physical analogy circuit and the
Two controlled sources, Digital Simulation circuit and the first controlled source are connected in series with, and physical analogy circuit and the second controlled source are connected in series with；
S2：The first impedance value of Digital Simulation subsystem is obtained by modal identification algorithm；S3：It is controlled in Digital Simulation circuit and first
First negative impedance between source is set, the first positive impedance is arranged in series between physical analogy circuit and the second controlled source, wherein, the
The absolute value of the impedance value of one negative impedance and the first positive impedance is the second impedance value, and the second impedance value is greater than or equal to the first resistance
The half of anti-value.
It is impedance-compensated to digital simulation subsystem and the progress of physical analogy subsystem in advance in the present invention, due to preferable transformation
The stable condition of device method is that the impedance of physical analogy subsystem is more than the impedance of Digital Simulation subsystem, so in Digital Simulation
One the first negative resistance of system balance, physical analogy subsystem compensate first positive impedance, the first negative impedance and the first positive resistance
The absolute value of anti-impedance value is all higher than or the half equal to the first impedance value so that the impedance value of physical analogy subsystem
The consistently greater than impedance value of Digital Simulation subsystem, it is ensured that the stability of system solves current ITM algorithm stabilities not
The technical issues of foot, accuracy and poor engineering adaptability.
Description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also
To obtain other attached drawings according to these attached drawings.
Fig. 1 is a kind of numerical model analysis simulated power interface algorithm based on ideal transformer method provided in an embodiment of the present invention
One embodiment flow diagram；
Fig. 2 is a kind of numerical model analysis simulated power interface algorithm based on ideal transformer method provided in an embodiment of the present invention
Another embodiment flow diagram；
Fig. 3 is a kind of numerical model analysis simulated power interface arrangement based on ideal transformer method provided in an embodiment of the present invention
One embodiment schematic device；
Fig. 4 wears dimension for a kind of Hybrid Real Time Simulation system provided in an embodiment of the present invention based on ideal transformer method
Southern equivalent circuit diagram；
Fig. 5 is a kind of simple equivalent circuit figure of Hybrid Real Time Simulation system provided in an embodiment of the present invention；
Fig. 6 is a kind of Hybrid Real Time Simulation system transter relational graph provided in an embodiment of the present invention；
Fig. 7 be a kind of Hybrid Real Time Simulation system provided in an embodiment of the present invention it is impedance-compensated after equivalent circuit
Figure；
Fig. 8 is the system topological after a kind of compensation of delay of Hybrid Real Time Simulation system provided in an embodiment of the present invention
Figure.
Specific embodiment
An embodiment of the present invention provides a kind of numerical model analysis simulated power interface algorithms and dress based on ideal transformer method
It puts, solves the technical issues of current ITM algorithm stabilities deficiency, accuracy and poor engineering adaptability.
In order to make the invention's purpose, features and advantages of the invention more obvious and easy to understand, below in conjunction with the present invention
Attached drawing in embodiment is clearly and completely described the technical solution in the embodiment of the present invention, it is clear that disclosed below
Embodiment be only part of the embodiment of the present invention, and not all embodiment.Based on the embodiments of the present invention, this field
All other embodiment that those of ordinary skill is obtained without making creative work, belongs to protection of the present invention
Range.
It please refers to Fig.1 and Fig. 4, an embodiment of the present invention provides a kind of numerical model analysis based on ideal transformer method to emulate work(
One embodiment of rate interface algorithm, including：
Step 101：The Digital Simulation subsystem and physics of thevenin equivalent circuit form are established based on ideal transformer method
Analog subsystem, wherein, Digital Simulation subsystem includes Digital Simulation circuit and the first controlled source, physical analogy subsystem packet
Physical analogy circuit and the second controlled source are included, Digital Simulation circuit and the first controlled source are connected in series with, physical analogy circuit and
Two controlled sources are connected in series with；
It should be noted that the Digital Simulation subsystem of thevenin equivalent circuit form can be established based on ideal transformer method
System and physical analogy subsystem, as shown in figure 4, E1And E2Represent respectively Digital Simulation subsystem, physical analogy subsystem it is equivalent
Power supply, RDAnd RPThe equivalent resistance of Digital Simulation subsystem and physical analogy subsystem, L are represented respectivelyDAnd LPNumber is represented respectively
Simulation subsystem and physical analogy subsystem equivalent reactance.
Step 102：The first impedance value of Digital Simulation subsystem is obtained by modal identification algorithm；
It should be noted that after establishing the Digital Simulation subsystem of thevenin equivalent circuit form, ginseng can be passed through
Number recognizer obtains the first impedance value of Digital Simulation subsystem.
Step 103：First negative impedance is set between Digital Simulation circuit and the first controlled source, in physical analogy circuit and
The first positive impedance is arranged in series between second controlled source, wherein, the absolute value of the impedance value of the first negative impedance and the first positive impedance
It is the second impedance value, the second impedance value is greater than or equal to the half of the first impedance value.
It should be noted that since the impedance that the stable condition of ideal transformer method is physical analogy subsystem is more than number
The impedance of simulation subsystem, so compensating first negative resistance, physical analogy subsystem compensation one in Digital Simulation subsystem
The absolute value of the impedance value of a first positive impedance, the first negative impedance and the first positive impedance is all higher than or two equal to the first impedance value
/ mono- so that the impedance value of physical analogy subsystem is consistently greater than the impedance value of Digital Simulation subsystem, it is ensured that system it is steady
It is qualitative, solve the technical issues of current ITM algorithm stabilities deficiency, accuracy and poor engineering adaptability.
It is calculated above for a kind of numerical model analysis simulated power interface based on ideal transformer method provided in an embodiment of the present invention
One embodiment of method is below a kind of numerical model analysis simulated power based on ideal transformer method provided in an embodiment of the present invention
Another embodiment of interface algorithm.
Fig. 2 and Fig. 4 are please referred to Fig. 8, an embodiment of the present invention provides a kind of digital-to-analogues based on ideal transformer method to mix
Another embodiment of simulated power interface algorithm is closed, including：
Step 201：The Digital Simulation subsystem and physics of thevenin equivalent circuit form are established based on ideal transformer method
Analog subsystem, wherein, Digital Simulation subsystem includes Digital Simulation circuit and the first controlled source, physical analogy subsystem packet
Physical analogy circuit and the second controlled source are included, Digital Simulation circuit and the first controlled source are connected in series with, physical analogy circuit and
Two controlled sources are connected in series with；
It should be noted that the Digital Simulation subsystem of thevenin equivalent circuit form can be established based on ideal transformer method
System and physical analogy subsystem, as shown in figure 4, E1And E2Represent respectively Digital Simulation subsystem, physical analogy subsystem it is equivalent
Power supply, RDAnd RPThe equivalent resistance of Digital Simulation subsystem and physical analogy subsystem, L are represented respectivelyDAnd LPNumber is represented respectively
Simulation subsystem and physical analogy subsystem equivalent reactance simplify equivalent rear as shown in Figure 5；
When establishing Digital Simulation subsystem and physical analogy subsystem using ideal transformer method, interface is controlled for first
Source and the second controlled source, from Fig. 4 and Fig. 5 it is found that replacing physical simulation system in Digital Simulation subsystem with the first controlled source,
Digital Simulation subsystem is replaced with the second controlled source in physical simulation system, the parameter tuning of controlled source is known technology hand
Section, details are not described herein.
Step 202：The first impedance value of Digital Simulation subsystem is obtained by modal identification algorithm；
It should be noted that after establishing the Digital Simulation subsystem of thevenin equivalent circuit form, ginseng can be passed through
Number recognizer obtains the first impedance value of Digital Simulation subsystem.
Step 203：First negative impedance is set between Digital Simulation circuit and the first controlled source, in physical analogy circuit and
The first positive impedance is arranged in series between second controlled source, wherein, the absolute value of the impedance value of the first negative impedance and the first positive impedance
It is the second impedance value, the second impedance value is greater than or equal to the half of the first impedance value；
It should be noted that according to the emulation universal model of Fig. 5, interface voltage is：
As shown in fig. 6, TD(s)、TP(s) be respectively physics side interface sum number word side interface transmission function, GP(s)、GD
(s) be respectively physical analogy subsystem and digital simulation subsystem impedance, TD(s)=TP(s)=1 when, which is reason
Think interface, digital physical mixed simulation result will be completely the same with real system, during signal actual transmissions, TD(s)、
TP(s) there is delay so that whole system is nonlinear system, to simplify the analysis process, by TD(s)、TP(s) it is unified to use
It represents, system delay is approached using Pade approximations, since hybrid simulation working frequency is not high, first approximation meets imitative
True required precision,Single order Pade approximate expressions be：
Then characteristic equation is：
Characteristic root solution is carried out to characteristic equation to be had：
Wherein, have：
B=[(LD+LP)τ+(RP-RD)] (5)
Then the stability condition of Hybrid Real Time Simulation system is according to stability criterion：
By the stability condition of formula (6) it is found that ensureing that the premise that Hybrid Real Time Simulation system is stablized is physical analogy
The impedance value of subsystem is more than the impedance value of Digital Simulation subsystem, in engineer application, demonstrate,proves Hybrid Real Time Simulation system
Unstable region include：
1st, in Hybrid Real Time Simulation system steady working condition, the impedance value of physical analogy subsystem is equal to or less than number
The impedance value of word simulation subsystem；
2nd, in Hybrid Real Time Simulation system transient modelling operating mode, the impedance value of physical analogy subsystem is imitative by being more than number
The impedance value of true subsystem becomes smaller than the impedance value of Digital Simulation subsystem；
Since realtime digital simulation platform digital processing capabilities are strong, model buildings are convenient, can facilitate and realize impedance transformation, can
Using the Mathematical treatment function of realtime digital simulation platform, the first negative impedance is compensated in digital side, it is corresponding in physical side compensation
First positive impedance, makes system meet stable condition；
The absolute value of the impedance value of first negative impedance and the first positive impedance is the second impedance value, the second impedance value be more than or
Equal to the half of the first impedance value, exist before compensating：
RD+LD＞ RP+LP (7)
RD+LD≤1/2(RΔ+LΔ) (8)
Then have after compensation：
RD+LD-RΔ-LΔ＜ RP+LP+RΔ+LΔ (8)
Wherein ,-RΔ-LΔFor the impedance value of the first negative impedance, RΔ+LΔImpedance value for the first positive impedance；
The impedance value of physical analogy subsystem is more than the impedance value perseverance establishment of Digital Simulation subsystem at this time, can avoid shakiness
Determine the presence in region, meet engineer application range, the equivalent circuit diagram after compensating is as shown in Figure 7.
Step 204：Anticipatory control link is arranged in series between the first negative impedance and digital artificial circuit, is set in power frequency
The amplitude gain for putting anticipatory control link is 1, is delayed by the power frequency for measuring Hybrid Real Time Simulation system to anticipatory control
The parameter of link is adjusted.
It should be noted that the presence of system interface delay can influence to emulate accuracy, interface responds the amplitude meeting of voltage
Reduce, phase is advanced and is proportional to system interface delay, and system interface delay need to be compensated in order to improve interface precision；
Due in practical interface system, signal transmission, filtering, A/D conversions, D/A conversions, physical side Interface Controller with
And the delays such as real-time digital software processing are inevitable, while above-mentioned inherent delay is reduced as possible, can also utilize real-time
The powerful digital processing function of digital simulation software compensates, and anticipatory control link is built in Digital Simulation subsystem to being
System interface delay compensates, and it is as shown in Figure 8 to have built the Hybrid Real Time Simulation system after anticipatory control link；
The process for building anticipatory control link is as follows：
The transmission function of anticipatory control is：
Wherein, T is time constant, and K, T and α are parameter to be adjusted；
Frequency response and amplitude response are respectively：
φ (ω)=arctan (T ω)-arctan (α T ω) (11)
Angular frequency is maximum in advance：
It is 1 in the amplitude gain that anticipatory control link is set in power frequency, by measuring Hybrid Real Time Simulation system
Power frequency delay, you can by power frequency delay the parameter of anticipatory control link is adjusted, acquire the value of K, T and α.
Further, the first controlled source is VCCS, and the second controlled source is CCVS.
It should be noted that the first controlled source and the second controlled source can be arranged as required in ideal transformer method, such as
First controlled source is VCCS, and the second controlled source is CCVS or the first controlled source is CCVS, and the second controlled source is VCCS.
It is impedance-compensated to digital simulation subsystem and the progress of physical analogy subsystem in advance in the present embodiment, since ideal becomes
The stable condition of depressor method is that the impedance of physical analogy subsystem is more than the impedance of Digital Simulation subsystem, so in Digital Simulation
Subsystem compensates first negative resistance, and physical analogy subsystem compensates first positive impedance, and the first negative impedance and first is just
The absolute value of the impedance value of impedance is all higher than or the half equal to the first impedance value so that the impedance of physical analogy subsystem
Value is consistently greater than the impedance value of Digital Simulation subsystem, avoids dynamically compensating the stability influence brought, it is ensured that the stabilization of system
Property, solve the technical issues of current ITM algorithm stabilities deficiency, accuracy and poor engineering adaptability；
Anticipatory control link is also provided with simultaneously, system interface delay is compensated by anticipatory control link, is solved
Emulation accuracy is impacted, and the amplitude of interface response voltage reduces, and phase is advanced and is proportional to the technology of system interface delay
Problem.
It is calculated above for a kind of numerical model analysis simulated power interface based on ideal transformer method provided in an embodiment of the present invention
Another embodiment of method emulates work(for a kind of numerical model analysis based on ideal transformer method provided in an embodiment of the present invention below
One embodiment of rate interface arrangement.
It to be connect referring to Fig. 3, an embodiment of the present invention provides a kind of numerical model analysis simulated powers based on ideal transformer method
One embodiment of mouth device, including：
System modelling unit 301, for establishing the Digital Simulation of thevenin equivalent circuit form based on ideal transformer method
Subsystem and physical analogy subsystem, wherein, Digital Simulation subsystem includes Digital Simulation circuit and the first controlled source, physics
Analog subsystem includes physical analogy circuit and the second controlled source, and Digital Simulation circuit and the first controlled source are connected in series with, physics
Analog circuit and the second controlled source are connected in series with；
Impedance recognition unit 302, for obtaining the first impedance value of Digital Simulation subsystem by modal identification algorithm；
Impedance-compensated unit 303, for setting the first negative impedance between Digital Simulation circuit and the first controlled source, in object
The first positive impedance is arranged in series between reason analog circuit and the second controlled source, wherein, the resistance of the first negative impedance and the first positive impedance
The absolute value of anti-value is the second impedance value, and the second impedance value is greater than or equal to the half of the first impedance value.
Further, it further includes：Delay correction unit 304；
Delay correction unit 304, for being arranged in series anticipatory control ring between the first negative impedance and digital artificial circuit
Section, the amplitude gain that anticipatory control link is set in power frequency is 1, is prolonged by the power frequency for measuring Hybrid Real Time Simulation system
When the parameter of anticipatory control link is adjusted.
Further, the first controlled source is VCCS, and the second controlled source is CCVS.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit can refer to the corresponding process in preceding method embodiment, and details are not described herein.
In several embodiments provided herein, it should be understood that disclosed system, device and method can be with
It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the unit
It divides, only a kind of division of logic function can have other dividing mode, such as multiple units or component in actual implementation
It may be combined or can be integrated into another system or some features can be ignored or does not perform.Another point, it is shown or
The mutual coupling, direct-coupling or communication connection discussed can be the indirect coupling by some interfaces, device or unit
It closes or communicates to connect, can be electrical, machinery or other forms.
The unit illustrated as separating component may or may not be physically separate, be shown as unit
The component shown may or may not be physical unit, you can be located at a place or can also be distributed to multiple
In network element.Some or all of unit therein can be selected according to the actual needs to realize the mesh of this embodiment scheme
's.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, it can also
That each unit is individually physically present, can also two or more units integrate in a unit.Above-mentioned integrated list
The form that hardware had both may be used in member is realized, can also be realized in the form of SFU software functional unit.
If the integrated unit is realized in the form of SFU software functional unit and is independent product sale or uses
When, it can be stored in a computer read/write memory medium.Based on such understanding, technical scheme of the present invention is substantially
The part to contribute in other words to the prior art or all or part of the technical solution can be in the form of software products
It embodies, which is stored in a storage medium, is used including some instructions so that a computer
Equipment (can be personal computer, server or the network equipment etc.) performs the complete of each embodiment the method for the present invention
Portion or part steps.And aforementioned storage medium includes：USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only
Memory), random access memory (RAM, Random Access Memory), magnetic disc or CD etc. are various can store journey
The medium of sequence code.
The above, the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to before
Embodiment is stated the present invention is described in detail, it will be understood by those of ordinary skill in the art that：It still can be to preceding
The technical solution recorded in each embodiment is stated to modify or carry out equivalent replacement to which part technical characteristic；And these
Modification is replaced, the spirit and scope for various embodiments of the present invention technical solution that it does not separate the essence of the corresponding technical solution.
Claims (6)
1. a kind of numerical model analysis simulated power interface algorithm based on ideal transformer method, which is characterized in that including：
S1：The Digital Simulation subsystem of thevenin equivalent circuit form and physical analogy subsystem are established based on ideal transformer method
System, wherein, Digital Simulation subsystem includes Digital Simulation circuit and the first controlled source, and physical analogy subsystem includes physics mould
Intend circuit and the second controlled source, Digital Simulation circuit and the first controlled source are connected in series with, physical analogy circuit and the second controlled source
It is connected in series with；
S2：The first impedance value of Digital Simulation subsystem is obtained by modal identification algorithm；
S3：First negative impedance is set between Digital Simulation circuit and the first controlled source, it is controlled in physical analogy circuit and second
The first positive impedance is arranged in series between source, wherein, the absolute value of the impedance value of the first negative impedance and the first positive impedance is second
Impedance value, the second impedance value are greater than or equal to the half of the first impedance value.
2. a kind of numerical model analysis simulated power interface algorithm based on ideal transformer method according to claim 1, special
Sign is, further includes：Step S4；
S4：Anticipatory control link is arranged in series between the first negative impedance and digital artificial circuit, advanced school is set in power frequency
The amplitude gain of positive link is 1, the ginseng being delayed by the power frequency for measuring Hybrid Real Time Simulation system to anticipatory control link
Number is adjusted.
3. a kind of numerical model analysis simulated power interface algorithm based on ideal transformer method according to claim 1, special
Sign is that the first controlled source is VCCS, and the second controlled source is CCVS.
4. a kind of numerical model analysis simulated power interface arrangement based on ideal transformer method, which is characterized in that including：
System modelling unit, for established based on ideal transformer method the Digital Simulation subsystem of thevenin equivalent circuit form and
Physical analogy subsystem, wherein, Digital Simulation subsystem includes Digital Simulation circuit and the first controlled source, physical analogy subsystem
System includes physical analogy circuit and the second controlled source, and Digital Simulation circuit and the first controlled source are connected in series with, physical analogy circuit
It is connected in series with the second controlled source；
Impedance recognition unit, for obtaining the first impedance value of Digital Simulation subsystem by modal identification algorithm；
Impedance-compensated unit, for setting the first negative impedance between Digital Simulation circuit and the first controlled source, in physical analogy
The first positive impedance is arranged in series between circuit and the second controlled source, wherein, the impedance value of the first negative impedance and the first positive impedance
Absolute value is the second impedance value, and the second impedance value is greater than or equal to the half of the first impedance value.
5. a kind of numerical model analysis simulated power interface arrangement based on ideal transformer method according to claim 4, special
Sign is, further includes：Delay correction unit；
Delay correction unit, for being arranged in series anticipatory control link between the first negative impedance and digital artificial circuit, in work
The amplitude gain that anticipatory control link is set during frequency is 1, is delayed by the power frequency for measuring Hybrid Real Time Simulation system to super
The parameter of preceding correction link is adjusted.
6. a kind of numerical model analysis simulated power interface arrangement based on ideal transformer method according to claim 4, special
Sign is that the first controlled source is VCCS, and the second controlled source is CCVS.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810045500.5A CN108256217A (en) | 2018-01-17 | 2018-01-17 | Numerical model analysis simulated power interface algorithm and device based on ideal transformer method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810045500.5A CN108256217A (en) | 2018-01-17 | 2018-01-17 | Numerical model analysis simulated power interface algorithm and device based on ideal transformer method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108256217A true CN108256217A (en) | 2018-07-06 |
Family
ID=62741369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810045500.5A Pending CN108256217A (en) | 2018-01-17 | 2018-01-17 | Numerical model analysis simulated power interface algorithm and device based on ideal transformer method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108256217A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110471310A (en) * | 2019-08-13 | 2019-11-19 | 广西电网有限责任公司电力科学研究院 | A kind of power-type numerical model analysis analogue system stability improvement method |
| CN110516327A (en) * | 2019-08-13 | 2019-11-29 | 广西电网有限责任公司电力科学研究院 | A method of judging more power interface numerical model analysis analogue system stability |
| WO2021212724A1 (en) * | 2020-04-21 | 2021-10-28 | 中国电力科学研究院有限公司 | Decomposition method and device for real-time simulation model of active power distribution network |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030125921A1 (en) * | 2001-12-27 | 2003-07-03 | Matsushita Electric Industrial Co., Ltd. | Circuit simulation apparatus, circuit simulation method, circuit simulation program, and storage medium storing circuit simulation program |
| CN205091555U (en) * | 2015-08-13 | 2016-03-16 | 中国南方电网有限责任公司电网技术研究中心 | Digital-analog hybrid simulation system and interface circuit thereof |
| CN106294891A (en) * | 2015-05-13 | 2017-01-04 | 国网智能电网研究院 | A kind of method for compensating MMC numerical model analysis simulated power interface system time delay |
| CN106877401A (en) * | 2017-04-17 | 2017-06-20 | 华北电力大学（保定） | Self adaptation improves LCL type grid-connected inverter system stability approach under weak grid conditions |
-
2018
- 2018-01-17 CN CN201810045500.5A patent/CN108256217A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030125921A1 (en) * | 2001-12-27 | 2003-07-03 | Matsushita Electric Industrial Co., Ltd. | Circuit simulation apparatus, circuit simulation method, circuit simulation program, and storage medium storing circuit simulation program |
| CN106294891A (en) * | 2015-05-13 | 2017-01-04 | 国网智能电网研究院 | A kind of method for compensating MMC numerical model analysis simulated power interface system time delay |
| CN205091555U (en) * | 2015-08-13 | 2016-03-16 | 中国南方电网有限责任公司电网技术研究中心 | Digital-analog hybrid simulation system and interface circuit thereof |
| CN106877401A (en) * | 2017-04-17 | 2017-06-20 | 华北电力大学（保定） | Self adaptation improves LCL type grid-connected inverter system stability approach under weak grid conditions |
Non-Patent Citations (3)
| Title |
|---|
| 李国庆 等: "MMC功率接口稳定性分析方法及改进措施", 《电力自动化设备》 * |
| 林楚乔 等: "MMC-HVDC数模混合仿真功率接口算法研究", 《东北电力大学学报》 * |
| 蔡玲珑: "数模混合实时仿真***应用及直流分量消除", 《中国优秀硕士学位论文全文数据库 工程科技II辑》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110471310A (en) * | 2019-08-13 | 2019-11-19 | 广西电网有限责任公司电力科学研究院 | A kind of power-type numerical model analysis analogue system stability improvement method |
| CN110516327A (en) * | 2019-08-13 | 2019-11-29 | 广西电网有限责任公司电力科学研究院 | A method of judging more power interface numerical model analysis analogue system stability |
| WO2021212724A1 (en) * | 2020-04-21 | 2021-10-28 | 中国电力科学研究院有限公司 | Decomposition method and device for real-time simulation model of active power distribution network |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108256217A (en) | Numerical model analysis simulated power interface algorithm and device based on ideal transformer method | |
| CN113394809B (en) | Flexible direct current island control method, device and medium based on power grid structure type | |
| CN102436534B (en) | Simulating method for electric power system | |
| CN103259268B (en) | Microgrid reactive-voltage control device and control method thereof | |
| CN103701351B (en) | The self adaptation reactive power control method of shunt chopper | |
| CN109449999B (en) | Low pressure micro-capacitance sensor distributed control method and system based on adaptive virtual impedance | |
| CN115313524A (en) | Photovoltaic power generation grid-connected control method and system based on network-building type converter | |
| CN102870309A (en) | Method and system for facilitating design of a high voltage (HVDC) control system, an HVDC system and a method for optimising an HVDC system | |
| CN108133095A (en) | A kind of double half-bridge submodule MMC modeling and simulating methods and device | |
| CN113285486A (en) | Droop control-based control method for loop current between parallel inverters | |
| CN107431355A (en) | Electric power transmission network | |
| CN107146165B (en) | Distribution network planning data management method and system | |
| CN113824160A (en) | Adaptive virtual inductor-based micro-grid parallel inverter power regulation method | |
| CN114336674A (en) | Distributed toughness frequency control method for alternating-current micro-grid | |
| CN111146807A (en) | Method for judging small interference stability of converter grid-connected system under polar coordinate | |
| CN107910876A (en) | A kind of outer shroud voltage control method and device based on chain type STATCOM | |
| CN111524439A (en) | Control method for simulation tool of compressor | |
| CN113595231A (en) | Uninterrupted micro-grid power supply cooperative control method and system based on virtual synchronous machine | |
| CN110661280A (en) | Method and system for determining virtual impedance of multi-level converter hybrid simulation system | |
| CN111049175A (en) | Method and system for calculating critical short-circuit ratio when flexible direct current is connected into weak alternating current power grid | |
| CN105224732B (en) | A kind of Ship Electrical Power System dynamic realtime emulation method | |
| CN106126871A (en) | A kind of governor model modeling method of PSCAD electromagnetic transient simulation | |
| CN115360757A (en) | Single-machine equivalent modeling method for multi-converter grid-connected flexible interconnection system | |
| CN109217384A (en) | More distributed generation resource power distribution methods based on the sagging control of active phase angle | |
| CN111555353B (en) | Distributed control method and device for micro-grid system and storage medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180706 |
|
| WD01 | Invention patent application deemed withdrawn after publication |