CN107634535A - Flexible direct current electric network composition and its control method based on H7 CSC - Google Patents
Flexible direct current electric network composition and its control method based on H7 CSC Download PDFInfo
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Abstract
The invention discloses a kind of flexible direct current electric network composition and its control method based on H7 CSC, structure includes DC side, transverter and AC, the transverter includes 7 bridge arms, wherein prime parallel branch is that SiC device for power switching is formed with Diode series, other 6 bridge arms are formed by one group of IGBT and Diode series, 6 bridge arms form full-bridge circuit, the big inductance of DC side series connection, energy storage efficiency is lifted using high temperature superconductor technology, AC forms second-order low-pass filter circuit by inductance, electric capacity, to filter out the higher hamonic wave for flowing into AC system.The present invention has eradicated the problem of commutation failure, and diode rectification path is not present during DC Line Fault, has DC Line Fault self-cleaning disposal ability, can carry out Fault Isolation and warm boot.
Description
Technical field
The invention belongs to flexible direct-current transmission field, more particularly to a kind of flexible direct current electric network composition based on H7-CSC and
Its control method.
Background technology
With the development of clean energy resource and regenerative resource, conventional AC power network be difficult to meet renewable energy power generation and
Requirement of the random fluctuation of load to power network fast reaction.And in direct current network, transverter can limit voltage pulsation, be based on
The dc circuit breaker of Power Electronic Technique can complete electric current disjunction within the ms level times, coordinate operation control system to realize
The quick adjustment of trend.
At present, can be divided into by forming the transverter of direct current network by two kinds：Line voltage commutation transverter (Line-
Commutated converter, LCC) and voltage source converter (Voltage source converter, VSC).LCC is changed
Flow device and use half controllable IGCT, it is necessary to which AC system provides commutation voltage, it is impossible to powered to passive network, connect weak exchange
Easily cause commutation failure during system.VSC transverters active reactive can be able to be that passive network is powered, still with independent control
VSC can not isolated DC side fault current, direct current network occur short trouble when, VSC electric capacity can discharge, produce it is very big
Direct fault current, therefore, very high is required to the dc circuit breaker at DC line both ends based on VSC direct current network, it is necessary to
Very big direct fault current can be cut off, causes dc circuit breaker prohibitively expensive.And the current source type with VSC into dual form
PWM transverters (Current source converter, CSC), in motor driving, dynamic passive compensation, wind-powered electricity generation simultaneously in recent years
The fields such as net obtain theoretical developments or engineer applied.Similar with VSC, CSC has eradicated commutation failure problem, and during DC Line Fault not
Diode rectification path be present, there is DC Line Fault self-cleaning ability, making cheap overhead line replace expensive cable to turn into can
Can, in addition, CSC DC side inductance can suppress the rapid increase of direct fault current, greatly reduce direct current network pair
The requirement of dc circuit breaker, so as to substantially reduce the cost of dc circuit breaker.
Although current end-to-end DC transmission system relative maturity, will develop into direct current network and be also faced with a system
Row new problem, it is seen that the research for the flexible direct current power network based on CSC has positive effect.
The content of the invention
The present invention is in order to solve the above problems, it is proposed that a kind of flexible direct current electric network composition and its control based on H7-CSC
Method, the present invention can solve the problems, such as commutation failure, and diode rectification path is not present during DC Line Fault, has DC Line Fault
Self-cleaning disposal ability, Fault Isolation and warm boot can be carried out.
To achieve these goals, the present invention adopts the following technical scheme that：
Flexible direct current electric network composition based on H7-CSC, including DC side, transverter and AC, the transverter include
7 bridge arms, wherein prime parallel branch are that SiC device for power switching is formed with Diode series, and other 6 bridge arms are by one group
IGBT is formed with Diode series, and 6 bridge arms form full-bridge circuit, the big inductance of DC side series connection, are carried using high temperature superconductor technology
Energy storage efficiency is risen, AC forms second-order low-pass filter circuit by inductance, electric capacity, humorous to filter out the high order of inflow AC system
Ripple.
Modulator approach based on said structure, two, three value switching signal conversion letters are utilized on the basis of VSC modulation systems
Number enters line translation and obtained, and two, three value switching signal transfer functions are
Wherein,XjFor binary switch signal, SjFor three value switching signals, j=a, b, c.
Before signal conversion, the reference signal of input is accordingly corrected, being transformed to three with two logical signals of counteracting patrols
Signal amplitude is increased to after collecting signalTimes, the phenomenon that 30 ° of delayed phase.
Parameter control method based on said structure, according to the active power, reactive power and DC voltage of AC
Value and the relation of ac-side current, active and reactive and DC voltage the closed-loop control to AC.
Startup rate-determining steps based on said structure are as follows：
(1) each end converter blocking is first kept, rectifier trigger delay angle α is arranged to 90 °, the reference of H7-CSC active reactives
Value is arranged to 0；
(2) rectifier is unlocked, AC circuit breaker closes a floodgate, and puts into alternating current filter and reactance arm, trigger delay angle α is by first
Initial value is adjusted to setting valve by linear variability law；
(3) inverter is unlocked, value and power reference is progressively adjusted to rated value by initial setting by linear changing rule；
(4) trigger delay angle is gradually reduced, and DC voltage and DC current gradually rise, until voltage x current reaches and adjusted
Value, system are transferred to normal operating condition.
DC Line Fault excision rate-determining steps based on said structure are as follows：
(1) block signal is sent, H7-CSC is carried out locking；
(2) the α angle controllers of determining of rectifier are adjusted rapidly, α angles is quickly raised to above 90 °, rectifier is with inversion side
Formula is run.
Warm boot control is as follows：
(1) ensure that failure is completely eliminated；
(2) system recovery procedure is identical with start-up course, and each reference value changes to setting valve by original state is linear again；
(3) system voltage electric current reaches setting valve, and system returns to steady operational status.
Compared with prior art, beneficial effects of the present invention are：
(1) H7-CSC has been eradicated the problem of commutation failure, and diode rectification path is not present during DC Line Fault, has direct current
Failure self-cleaning disposal ability, Fault Isolation and warm boot can be carried out.
(2) H7-CSC is replaced using SiC device for power switching as transverter prime parallel branch by its alternate conduction
To leading directly to the on-off times of switching device are greatly decreased, so as to reduce transverter loss in traditional C/S C bypass.
(3) series inductance of DC side can limit the rapid growth of direct fault current, substantially reduce to direct current interruption
Device can drop-out current ability requirement.
(4) H7-CSC inverters solve the problems, such as that Traditional DC transmission of electricity can not power to passive network or light current net, whole
Stream device can play a part of stable DC voltage.
Brief description of the drawings
The Figure of description for forming the part of the application is used for providing further understanding of the present application, and the application's shows
Meaning property embodiment and its illustrate be used for explain the application, do not form the improper restriction to the application.
Fig. 1 is H7-CSC topology diagrams；
Fig. 2 is two, three value switching signal conversion tables；
Fig. 3 is two, three logical signal modular converter logic circuits；
Fig. 4 is H7-CSC modulation module structure charts；
Fig. 5 is H7-CSC steady-state equivalent circuit diagram；
Fig. 6 is the three end flexible direct current electric network composition schematic diagrames based on H7-CSC.
Embodiment：
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
It is noted that described further below is all exemplary, it is intended to provides further instruction to the application.It is unless another
Indicate, all technologies used herein and scientific terminology are with usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in this manual using term "comprising" and/or " bag
Include " when, it indicates existing characteristics, step, operation, device, component and/or combinations thereof.
In the present invention, term as " on ", " under ", "left", "right", "front", "rear", " vertical ", " level ", " side ",
The orientation or position relationship of instructions such as " bottoms " are based on orientation shown in the drawings or position relationship, only to facilitate describing this hair
Bright each part or component structure relation and the relative determined, not refer in particular to either component or element in the present invention, it is impossible to understand
For limitation of the present invention.
In the present invention, term such as " affixed ", " connected ", " connection " should be interpreted broadly, and expression can be fixedly connected,
Can also be integrally connected or be detachably connected；Can be joined directly together, can also be indirectly connected by intermediary.For
The related scientific research of this area or technical staff, the concrete meaning of above-mentioned term in the present invention can be determined as the case may be,
It is not considered as limiting the invention.
As background technology is introduced, LCC transverters in the prior art be present using half controllable IGCT, it is necessary to hand over
Streaming system provides commutation voltage, it is impossible to is powered to passive network, easily causes commutation failure when connecting weak AC system.VSC is changed
Flow device can not isolated DC side fault current, direct current network occur short trouble when, VSC electric capacity can discharge, produce very
The deficiency of big direct fault current, in order to solve technical problem as above, present applicant proposes New Topological H7-CSC tune
Mode and control mode processed；
Present invention also offers the method and its control strategy that three end flexible direct current power networks are built based on H7-CSC, including it is steady
Fixed operation control, DC Line Fault excision control and warm boot control etc..
Embodiment 1
In a kind of typical embodiment of the application, as shown in figure 1, H7-CSC topological structures, transverter has 7 bridges
Arm, wherein prime parallel branch switch T7For new SiC device for power switching, with diode D7Series connection, other 6 bridge arms by
One group of IGBT (T1-T6) and diode (D1-D6) in series.The big inductance L of DC side series connectiondc, high temperature superconductor technology can be utilized
Lift energy storage efficiency.AC forms second-order low-pass filter circuit by inductance L, electric capacity C, to filter out the high order for flowing into AC system
Harmonic wave.
The present invention obtains CSC modulation system using the method for entering line translation on the basis of VSC modulation systems.Three-phase
VSC bridge arm switching signal is two Logic switch functions, each phase upper and lower bridge arm must have one it is in the conduction state, i.e.,Wherein, 1 upper bridge arm conducting is represented, -1 represents lower bridge arm conducting.
, can be by and three-phase CSC modulated signal is three Logic switch functionsObtain, in formula,1 represents upper bridge arm conducting, and -1 represents lower bridge arm conducting, and 0 expression upper and lower bridge arm is both turned on or not
Conducting.2nd, three value switching signal contrast relationships are as shown in Figure 2.
Modulated by SPWM, three-phase VSC two logic modulated signals can be changed into by two, three value switching signal transfer functions
Three-phase CSC three logic modulated signals.Due to using H7-CSC topologys herein, NULL STATE only need T7Conducting, remaining is opened
Close lock, it is therefore desirable to different from common CSC NULL state logic calculating processes.Based on T7Two logical signals turn three logics
The logic circuit of signal is as shown in figure 3, X1-X6For three-phase VSC modulated signal, S1-S7For three-phase H7-CSC modulated signal.
However, after two logical signals are transformed to three logical signals, amplitude will be increased toTimes, 30 ° of delayed phase.Cause
This is before signal conversion, it is necessary to accordingly be corrected to the reference signal of input.Whole modulated process is as shown in figure 4, MAref、
MBref、MCrefFor the three-phase reference signal of input, S1-S7For H7-CSC switch modulation signal.
H7-CSC steady-state equivalent circuit is as shown in figure 5, idcFor DC current, udcFor DC voltage, ipdWith ipqRespectively
The dq axis components of AC system electric current, i are flowed into by transvertercdWith icqRespectively filter capacitor flows into the dq axles of ac-side current
Component, isdWith isqThe respectively dq axis components of ac-side current, usdWith usqThe respectively dq axis components of AC line voltage, Ps
With QsRespectively flow to the active power and reactive power of AC, AC line voltage phasorDirection is d direction of principal axis, then usd
=Us, usq=0.
It can be arranged and be write on ac-side current i by Kirchhoff's lawsdAnd isqComplex number equation：-jXC(icd+jicq)+jXL
(isd+jisq)=- (usd+jusq)=- Us, icd+jicq+ipd+jipq=isd+jisq.Two formula on simultaneous, it can obtain：
Thus the active power for flowing into AC system is calculatedReactive powerAnd DC voltage
Utilize Ps、Qs、UdcWith ipd、ipqBetween mathematical relationship, it is possible to achieve active and reactive and DC voltage is closed
Ring controls.
Embodiment 2
Using basic current converters of the H7-CSC in embodiment 1 as direct current network, VSC can be avoided can not to isolate directly
The problem of flowing fault current, while by the use of new SiC device as prime parallel branch to reduce traditional C/S C working loss.
However, the direct current network that single use H7-CSC is set up can not ensure DC-side Voltage Stabilization in specified voltage etc.
Near level, therefore, steady dc voltage is provided using LCC rectifiers herein.
LCC rectifiers use the dipolar configuration of 12 pulsation, and to reduce harmonic components, control mode is controlled using α angles are determined, profit
With formula Udc=1.35UsCos α obtain the α angles of corresponding given direct voltage reference value, wherein, UsAC line voltage is represented, α is
Trigger delay angle.
And H7-CSC control mode is then similar to the control of VSC outer shrouds, using determining active power controller and determine reactive power
Control.
In order to keep symmetrical structure with LCC, when building DC network, H7-CSC equally uses dipolar configuration, two lists
The modulation of pole is identical with control mode holding, and the three ends DC network structure is as shown in Figure 6.
Embodiment 3
The present embodiment refers to other kinds of direct current network start-up course, formulates the end Hybrid HVDC systems of LCC-CSC tri-
The startup control strategy of system, specific implementation process are as follows：
(1) each end converter blocking is first kept, LCC rectifier trigger delay angles α is arranged to 90 °, H7-CSC active reactives
Reference value is arranged to 0；
(2) rectifier is unlocked, AC circuit breaker closes a floodgate, and puts into alternating current filter and reactance arm, trigger delay angle α is by first
Initial value is adjusted to setting valve by linear variability law；
(3) inverter is unlocked, value and power reference is progressively adjusted to rated value by initial setting by linear changing rule；
(4) trigger delay angle is gradually reduced, and DC voltage and DC current gradually rise, until voltage x current reaches and adjusted
Value, system are transferred to normal operating condition.
When DC line occur short trouble when, system need to carry out it is following control, quickly to eliminate failure：
(1) block signal is sent, H7-CSC is carried out locking；
(2) the α angle controllers of determining of LCC rectifiers are adjusted rapidly, α angles is quickly raised to above 90 °, LCC is with inversion side
Formula is run.
After ensuring that failure is completely eliminated, system can be restarted.Removing locked signal, recovery process and start-up course
Identical, each reference value changes to setting valve by original state is linear again, until system returns to steady operational status.
The preferred embodiment of the application is the foregoing is only, is not limited to the application, for the skill of this area
For art personnel, the application can have various modifications and variations.It is all within spirit herein and principle, made any repair
Change, equivalent substitution, improvement etc., should be included within the protection domain of the application.
Although above-mentioned the embodiment of the present invention is described with reference to accompanying drawing, model not is protected to the present invention
The limitation enclosed, one of ordinary skill in the art should be understood that on the basis of technical scheme those skilled in the art are not
Need to pay various modifications or deformation that creative work can make still within protection scope of the present invention.
Claims (7)
1. the flexible direct current electric network composition based on H7-CSC, it is characterized in that：It is described to change including DC side, transverter and AC
Stream device includes 7 bridge arms, and wherein prime parallel branch is that SiC device for power switching is formed with Diode series, other 6 bridge arms
Formed by one group of IGBT and Diode series, 6 bridge arms form full-bridge circuit, the big inductance of DC side series connection, are surpassed using high temperature
Waveguide technology lifts energy storage efficiency, and AC forms second-order low-pass filter circuit by inductance, electric capacity, and AC system is flowed into filter out
Higher hamonic wave.
2. based on the modulator approach of structure as claimed in claim 1, it is characterized in that：Utilized on the basis of VSC modulation systems
2nd, three value switching signal transfer functions enter line translation and obtained, and two, three value switching signal transfer functions are
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Wherein,XjFor binary switch signal, SjFor three value switching signals, j=a, b, c.
3. modulator approach as claimed in claim 2, it is characterized in that：Before signal conversion, the reference signal of input is carried out
Corresponding amendment, it is to offset signal amplitude increase after two logical signals are transformed to three logical signalsTimes, 30 ° of delayed phase
Phenomenon.
4. based on the parameter control method of structure as claimed in claim 1, it is characterized in that：According to the active power of AC,
Reactive power and DC voltage value and the relation of ac-side current, to active and reactive and DC voltage the closed loop of AC
Control.
5. the startup control method based on structure as claimed in claim 1, it is characterized in that：Step is as follows：
(1) each end converter blocking is first kept, rectifier trigger delay angle α is arranged to 90 °, and H7-CSC active reactive reference values are set
It is set to 0；
(2) rectifier is unlocked, AC circuit breaker closes a floodgate, and puts into alternating current filter and reactance arm, trigger delay angle α is by initial value
Setting valve is adjusted to by linear variability law；
(3) inverter is unlocked, value and power reference is progressively adjusted to rated value by initial setting by linear changing rule；
(4) trigger delay angle is gradually reduced, and DC voltage and DC current gradually rise, until voltage x current reaches setting valve,
System is transferred to normal operating condition.
6. the DC Line Fault excision control method based on structure as claimed in claim 1, it is characterized in that：Step is as follows：
(1) block signal is sent, H7-CSC is carried out locking；
(2) the α angle controllers of determining of rectifier are adjusted rapidly, α angles is quickly raised to above 90 °, rectifier is transported with inverting
OK.
7. based on the resumption control method of structure as claimed in claim 1, it is characterized in that：
(1) ensure that failure is completely eliminated；
(2) system recovery procedure is identical with start-up course, and each reference value changes to setting valve by original state is linear again；
(3) system voltage electric current reaches setting valve, and system returns to steady operational status.
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| CN201710930367.7A CN107634535A (en) | 2017-10-09 | 2017-10-09 | Flexible direct current electric network composition and its control method based on H7 CSC |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710930367.7A CN107634535A (en) | 2017-10-09 | 2017-10-09 | Flexible direct current electric network composition and its control method based on H7 CSC |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111585280A (en) * | 2020-03-06 | 2020-08-25 | 山东大学 | Temporary power grid splitting method and system for blocking multi-direct-current commutation failure linkage |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5041959A (en) * | 1990-08-14 | 1991-08-20 | General Electric Company | Control system for a current source converter supplying an AC bus |
| CN102891497A (en) * | 2012-09-24 | 2013-01-23 | 华北电力大学 | Method for starting ultra-weak receiving-end high-voltage direct-current power transmission system by using static synchronous compensation |
| CN105680466A (en) * | 2016-03-10 | 2016-06-15 | 国网山东省电力公司电力科学研究院 | Dynamic simulation system applying two-stage DC voltage for hybrid DC power grid |
| CN106602908A (en) * | 2017-02-21 | 2017-04-26 | 山东大学 | Cascading modularization current source current transformer and modulation method thereof |
-
2017
- 2017-10-09 CN CN201710930367.7A patent/CN107634535A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5041959A (en) * | 1990-08-14 | 1991-08-20 | General Electric Company | Control system for a current source converter supplying an AC bus |
| CN102891497A (en) * | 2012-09-24 | 2013-01-23 | 华北电力大学 | Method for starting ultra-weak receiving-end high-voltage direct-current power transmission system by using static synchronous compensation |
| CN105680466A (en) * | 2016-03-10 | 2016-06-15 | 国网山东省电力公司电力科学研究院 | Dynamic simulation system applying two-stage DC voltage for hybrid DC power grid |
| CN106602908A (en) * | 2017-02-21 | 2017-04-26 | 山东大学 | Cascading modularization current source current transformer and modulation method thereof |
Non-Patent Citations (3)
| Title |
|---|
| 江涵 等: "基于ETSDAC 的±800 kV 特高压直流输电***仿真建模研究", 《智能电网》 * |
| 王传兵: "三相电流型PWM整流器的研究", 《中国优秀硕士学位论文全文数据库-工程科技II辑》 * |
| 薛英林 等: "电流源型混合直流输电***建模与仿真", 《电力***自动化》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111585280A (en) * | 2020-03-06 | 2020-08-25 | 山东大学 | Temporary power grid splitting method and system for blocking multi-direct-current commutation failure linkage |
| CN111585280B (en) * | 2020-03-06 | 2021-07-06 | 山东大学 | Temporary power grid splitting method and system for blocking multi-direct-current commutation failure linkage |
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