CN105119281B - The UPFC control methods of quick Terminal sliding moding structures - Google Patents
The UPFC control methods of quick Terminal sliding moding structures Download PDFInfo
- Publication number
- CN105119281B CN105119281B CN201510549500.5A CN201510549500A CN105119281B CN 105119281 B CN105119281 B CN 105119281B CN 201510549500 A CN201510549500 A CN 201510549500A CN 105119281 B CN105119281 B CN 105119281B
- Authority
- CN
- China
- Prior art keywords
- control
- terminal sliding
- upfc
- sliding mode
- mode variable
- 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.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 42
- 239000003990 capacitor Substances 0.000 claims abstract description 7
- 238000004364 calculation method Methods 0.000 claims abstract description 5
- 238000006243 chemical reaction Methods 0.000 claims abstract description 3
- 238000011217 control strategy Methods 0.000 claims description 10
- 230000008859 change Effects 0.000 claims description 7
- 238000009795 derivation Methods 0.000 claims description 3
- 210000001258 synovial membrane Anatomy 0.000 claims description 3
- 230000005611 electricity Effects 0.000 abstract description 9
- 230000005540 biological transmission Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000004044 response Effects 0.000 description 4
- 238000004088 simulation Methods 0.000 description 3
- 230000001052 transient effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009415 formwork Methods 0.000 description 2
- 230000009897 systematic effect Effects 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000006880 cross-coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- 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
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/10—Flexible AC transmission systems [FACTS]
Landscapes
- Control Of Electrical Variables (AREA)
Abstract
The invention discloses a kind of UPFC control methods of quick Terminal sliding moding structures, including：The system mathematic model set up is decoupled, obtains being easy to the system state equation of Sliding mode variable structure control；Terminal sliding moding structures are selected according to the actual conditions of system；Controller, the controller of series side Terminal Sliding mode variable structure controls of design side Terminal Sliding mode variable structure controls in parallel；Design the controller of the Terminal Sliding mode variable structure controls of DC capacitor link；According to the physical meaning selected amount survey calculation of target variable and target desired control signal is exported, and obtain by Frequency conversion control the trigger signal of series side and side in parallel transverter.The present invention can fast and effeciently control the active and reactive power of controlled transmission line of electricity, adaptability and robustness of the raising system after being disturbed, so as to ensure power network safety operation.
Description
Technical field
The present invention relates to a kind of UPFC control methods of quick Terminal sliding moding structures, belong to power electronics and control automatically
Technical field processed.
Background technology
THE UPFC (UPFC) is the commanding elevation that Power Electronic Technique is applied in the world today, is used as the third generation
FACTS equipment is represented, and is most comprehensive FACTS devices of function so far.It is uneven that UPFC can not only solve power conveying
Problem, lifting electric network swim conveying capacity, operation, the transient stability for improving system simultaneously for optimization system, damping system
Vibration there is obvious action, have a extensive future.
UPFC concept, is to be proposed by L.Gyugyi et al. in 1992 at first, external to study more early to UPFC, 1998
First table apparatus, the successful operation on the 138kV of U.S. locations ultra-high-tension power transmission line in the world, it is sufficient to illustrate UPFC hardware
Realization is feasible, and current engineering operation is good.And China starts late, just begun one's study after nineteen ninety-five, on it
The paper of control method is also more, and the structure of its controller is also varied, and primary method of control includes：Traditional PI controls,
The method such as neutral net and fuzzy adaptivecontroller, nonlinear Control, decoupled control scheme, coordination control.
UPFC can be to the distribution of the trend on controlled power transmission line and node as a kind of series and parallel mixed type FACTS elements
Voltage is flexibly controlled, its basic comprising modules STATCOM (STATCOM) and SSSC
And middle DC capacitor (SSSC).If lacking effective control measure to UPFC systems, broken down in AC system
Or it is possible to cause the commutation failure of transverter during disturbance.If commutation failure overlong time may cause converter blocking, greatly
The power of amount will be unable to be transmitted by transverter, it is most likely that cause the unstability of both sides AC system.And if control is arranged
Apply proper, after AC system breaks down, the active and nothing that UPFC systems are transmitted is automatically adjusted by set control strategy
Work(power, the time for reducing commutation failure even prevents commutation failure, it is possible to make full use of the fast of UPFC system fading margins
Speed, emergency DC power support is carried out to AC system, or helps the fast quick-recovery of AC system after a failure, is weakened AC system and is shaken
Swing, it is ensured that the operation of both sides electricity net safety stable.So the stable control method of research UPFC transverters, is Unified Power Flow control
The engineer applied of control system provides technical support and favourable reference, with huge economic value and application prospect.
The UPFC converter Control methods used at present are mainly based upon classical PI control theories, and systematic mathematical is built
The requirement of mould is very high, is difficult to obtain satisfied control effect, and robustness is not strong.
The content of the invention
It is an object of the invention to overcome deficiency of the prior art, there is provided a kind of quick Terminal sliding moding structures
UPFC control methods, solve to carry out UPFC converter Controls based on classics PI control theories in the prior art, systematic mathematical are built
Mould requires high, and control effect is bad, and the not strong technical problem of robustness.
In order to solve the above technical problems, the technical solution adopted in the present invention is：Quick Terminal sliding moding structures
UPFC control methods, comprise the following steps：
Step one：The system mathematic model set up is solved using the method for vector controlled and the method for coordinate transform
Coupling, so as to obtain being easy to the system state equation of Sliding mode variable structure control；
Step 2：Terminal sliding moding structures are selected according to the actual conditions of system, include of input/output variable
Number, the parameter parity of sliding-mode surface, exponent number；
Step 3：According to the method for Terminal Sliding mode variable structure controls, combining target Variational Design parallel connection side
The controller of Terminal Sliding mode variable structure controls；
Step 4：According to the method for Terminal Sliding mode variable structure controls, combining target Variational Design series side
The controller of Terminal Sliding mode variable structure controls；
Step 5：Consider DC bus-bar voltage change caused by load current change, design DC capacitor link
The controller of Terminal Sliding mode variable structure controls；
Step 6：According to the physical meaning selected amount survey calculation of target variable and target desired control signal is exported, and
The trigger signal of series side and side in parallel transverter is obtained by Frequency conversion control.
System state equation described in step one is as follows：
Side transverter in parallel is with control system grid entry point voltage and idle for control targe, and its state equation is：
Series side transverter is active and idle for control targe with control circuit, and its state equation is：
Wherein：LEAnd RERepresent the equivalent inductance and resistance of UPFC shunt transformers and connected reactance；iEdAnd iEqPoint
Wei not UPFC side output current coordinate components in parallel, usdAnd usqRespectively power network sending end busbar voltage, u1dAnd u1qIt is in parallel for UPFC
The output voltage of current transformer；ω is power network angular speed；
L=LB+LN, R=RB+RN,LBAnd RBRepresent that UPFC series transformers connect the equivalent inductance and electricity of reactance respectively
Resistance, LNAnd RNThe equivalent inductance and resistance of circuit, i are represented respectivelyBdAnd iBqThe electricity that circuit and UPFC series sides flow through is represented respectively
Flow coordinate components, u2dAnd u2qFor the output voltage of UPFC series converters, uBdAnd uBqThe AC of respectively series connection transverter is defeated
Go out voltage.
Terminal sliding moding structures described in step 2, meet：
Wherein：S represents switching function；X ∈ R are state variable；P, q are positive odd number, and p is more than q, β>0；P, q are positive odd number,
φ>0, γ>0.
The controller of design parallel connection side Terminal Sliding mode variable structure controls comprises the following steps that described in step 3：
It is determined that the structure of quick Terminal Sliding mode variable structure systems, according to quick Terminal Sliding Mode Controllers
Design method designs parallel inverter control strategy, the state variable of selecting system
x1=iEd
x2=iEq
Take sliding mode variable s1And s2, and derivation
According to parallel inverter state equation,
And take the quick Terminal sliding-mode surfaces of second order,
The parallel inverter control strategy of final quick Terminal Sliding mode variable structure controls is obtained, namely
The step of controller of series side Terminal Sliding mode variable structure controls is designed described in step 4 is as follows：
Choose state variable u2dAnd u2q, the quick Terminal sliding-mode surfaces of second order obtain quick Terminal sliding moding structures control
The series connection converter Control strategy of system：
The controller step that the Terminal Sliding mode variable structure controls of DC capacitor link are designed described in step 5 is as follows：
The state variable x=u of selecting systemdc, take sliding mode variableTake synovial membrane face
Consider the power relation of DC bus-bar voltage, obtain electric capacity C control electric current：
Wherein：k、k1、k2It is controller parameter, is all higher than 0；udcRepresent DC tache voltage；iloadRepresent load electricity
Stream.
Target desired value described in step 6 is calculated by following formula and tried to achieve：
In formula：P, Q represent that circuit is active and reactive power desired value respectively.
Compared with prior art, the beneficial effect that the present invention is reached：The present invention is by Terminal Sliding mode variable structure controls
Method (basic structure is variable structure control system) is used for side in parallel transverter, series side transverter and intermediate DC link control
In system, with reference to the advantage of Sliding mode variable structure control strong robustness and fast convergence rate, propose to become knot based on double Terminal sliding formworks
Structure coordinates the UPFC converter Control methods of control, and the present invention can fast and effeciently control active, the nothing of controlled transmission line of electricity
Work(power, adaptability and robustness of the raising system after being disturbed, so as to ensure power network safety operation.
Brief description of the drawings
Fig. 1 is UPFC side equivalent circuit in parallel.
Fig. 2 is UPFC series side equivalent circuit.
Fig. 3 is UPFC side control principle block diagram in parallel.
Fig. 4 is UPFC series side control principle block diagram.
Fig. 5 is the two machine two-wires topological structure of transmission system containing UPFC.
Fig. 6 is DC voltage response condition when control structure changes.
Fig. 7 is response condition when system operating point changes.
UPFC response conditions when Fig. 8 is the system failure.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.Following examples are only used for clearly illustrating the present invention
Technical scheme, and can not be limited the scope of the invention with this.
The UPFC control methods of quick Terminal sliding moding structures, comprise the following steps：
Step one：The system mathematic model set up is solved using the method for vector controlled and the method for coordinate transform
Coupling, so as to obtain being easy to the system state equation of Sliding mode variable structure control.
There are cross-couplings in side in parallel and series side transverter, vector control is realized in order to coordinate under three-phase static coordinate system
System control and sliding formwork become Uncoupling Control Based, it is necessary to set up system state equation under rotating coordinate system using coordinate transform.
Side transverter in parallel is with control system grid entry point voltage and idle for control targe, and its state equation is：
Series side transverter is active and idle for control targe with control circuit, and its state equation is：
Wherein：LEAnd RERepresent the equivalent inductance and resistance of UPFC shunt transformers and connected reactance；iEdAnd iEqPoint
Wei not UPFC side output current coordinate components in parallel, usdAnd usqRespectively power network sending end busbar voltage, u1dAnd u1qIt is in parallel for UPFC
The output voltage of current transformer；ω is power network angular speed；
L=LB+LN, R=RB+RN,LBAnd RBRepresent that UPFC series transformers connect the equivalent inductance and electricity of reactance respectively
Resistance, LNAnd RNThe equivalent inductance and resistance of circuit, i are represented respectivelyBdAnd iBqThe electricity that circuit and UPFC series sides flow through is represented respectively
Flow coordinate components, u2dAnd u2qFor the output voltage of UPFC series converters, uBdAnd uBqThe AC of respectively series connection transverter is defeated
Go out voltage.
Equivalent, side in parallel and series side equivalent circuit diagram such as figure are carried out to UPFC circuit structure according to above-mentioned state equation
Shown in 1 and Fig. 2.
Step 2：Terminal sliding moding structures are selected according to the actual conditions of system, include of input/output variable
Number, the parameter parity of sliding-mode surface, exponent number.
Power system is the complication system of a nonlinear time-varying, and a D controller (single input variable) is difficult to meet control
It is required that, and three-dimensional and above controller control law is complicated, and accurate acquisition is difficult in reality, so suggestion applies wide two
D controller.A suitable switching function S is found, is met
Wherein：X ∈ R are state variable, β>0, p, q (p>Q) it is positive odd number, controller parameter φ, γ>0.In principle balance
System convergence speed during state, when system is close to equilibrium state, Nonlinear Sliding mode convergence rate is slower, therefore, improves
Global quick Terminal sliding modes, and parameter meets requirement above：
For above sliding mode function, it is necessary to reach the purpose of Fast Convergent using suitable parameter.
Step 3：According to the method for Terminal Sliding mode variable structure controls, combining target Variational Design parallel connection side
The controller of Terminal Sliding mode variable structure controls.
It is determined that the structure of quick Terminal Sliding mode variable structure systems, according to quick Terminal Sliding Mode Controllers
Design method designs parallel inverter control strategy, the state variable of selecting system
x1=iEd
x2=iEq
Take sliding mode variable s1And s2, and derivation
According to parallel inverter state equation,
And take the quick Terminal sliding-mode surfaces of second order,
The parallel inverter control strategy of final quick Terminal Sliding mode variable structure controls is obtained, namely
Step 4：According to the method for Terminal Sliding mode variable structure controls, combining target Variational Design series side
The controller of Terminal Sliding mode variable structure controls.
With step 3 similarly, state variable u is chosen2dAnd u2q, the quick Terminal sliding-mode surfaces of second order can obtain quickly
The series connection converter Control strategy of Terminal Sliding mode variable structure controls
Step 5：Consider DC bus-bar voltage change caused by load current change, design DC capacitor link
The controller of Terminal Sliding mode variable structure controls.
The state variable x=u of selecting systemdc, take sliding mode variableTake synovial membrane face
Consider the power relation of DC bus-bar voltage, obtain electric capacity C control electric current：
Wherein：k、k1、k2It is controller parameter, is all higher than 0；udcRepresent DC tache voltage；iloadRepresent load electricity
Stream.
Step 6：According to the physical meaning selected amount survey calculation of target variable and target desired control signal is exported, and
Control to obtain the trigger signal of series side and side in parallel transverter by space vector (SVPWM).
The desired value of system state variables is provided according to the physical meaning of target variable, calculation formula is as follows：
In formula：P, Q represent that circuit is active and reactive power desired value respectively.SVPWM technologies are more ripe, herein not
Repeat again.UPFC parallel connection sides and series side control principle block diagram are as shown in Figure 3 and Figure 4.
If Fig. 5 is the two machine two-wires topological structure of transmission system containing UPFC.Electromagnetic transient simulation model is set up in MATLAB,
Controller module and primary system simulation model are built according to above control method, different disturbances is set in emulation to verify control
The stability of device processed.The different running situations of selection carry out electromagnetic transient simulations, after disturbance system response condition and other
Control method is contrasted as can be seen from figures 6 to 8.
It can be seen that by the contrast of control effect：Situation about not changed in System control structures and system operating point
Under, the control method based on quick Terminal Sliding mode variable structure controls compared to traditional control method effect quite, can be right
System provides larger damping, is rapidly achieved control targe desired value, improves the safety and stability performance of system；Tied when in system control
When structure or system operating point change, due to the advantage of quick Terminal sliding moding structures strong robustness, so double quick is fast
The effect of Terminal Sliding mode variable structure controls is substantially better than other method, illustrates double quick speed Terminal Sliding mode variable structure controls
Method has more preferable adaptability to system, and robustness preferably, or even in system has delay and system model structure and ginseng
Also there is good control effect in the case of number is uncertain.
Described above is only the 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, some improvement and deformation can also be made, these improve and deformed
Also it should be regarded as protection scope of the present invention.
Claims (6)
1. the UPFC control methods of quick Terminal sliding moding structures, it is characterised in that comprise the following steps：
Step one：The system mathematic model set up is decoupled using the method for vector controlled and the method for coordinate transform,
So as to obtain being easy to the system state equation of Sliding mode variable structure control；
Described system state equation is as follows：
Side transverter in parallel is with control system grid entry point voltage and idle for control targe, and its state equation is：
Series side transverter is active and idle for control targe with control circuit, and its state equation is：
Wherein：LEAnd RERepresent the equivalent inductance and resistance of UPFC shunt transformers and connected reactance；iEdAnd iEqRespectively
UPFC parallel connections side output current coordinate components, usdAnd usqRespectively power network sending end busbar voltage, u1dAnd u1qFor UPFC unsteady flows in parallel
The output voltage of device；ω is power network angular speed；
L=LB+LN, R=RB+RN,LBAnd RBRepresent that UPFC series transformers connect the equivalent inductance and resistance of reactance, L respectivelyN
And RNThe equivalent inductance and resistance of circuit, i are represented respectivelyBdAnd iBqThe electric current coordinate that circuit and UPFC series sides flow through is represented respectively
Component, u2dAnd u2qFor the output voltage of UPFC series converters, uBdAnd uBqThe AC output of respectively series connection transverter is electric
Pressure；
Step 2：According to the actual conditions of system select Terminal sliding moding structures, including input/output variable number,
The parameter parity of sliding-mode surface, exponent number；
Step 3：According to the method for Terminal Sliding mode variable structure controls, combining target Variational Design parallel connection side Terminal is slided
The controller of moding structure control；
Step 4：According to the method for Terminal Sliding mode variable structure controls, combining target Variational Design series side Terminal is slided
The controller of moding structure control；
Step 5：Consider DC bus-bar voltage change caused by load current change, design the Terminal of DC capacitor link
The controller of Sliding mode variable structure control；
Step 6：According to the physical meaning selected amount survey calculation of target variable and target desired control signal is exported, and passed through
Frequency conversion control obtains the trigger signal of series side and side in parallel transverter.
2. the UPFC control methods of quick Terminal sliding moding structures according to claim 1, it is characterised in that：Step
Terminal sliding moding structures described in two, meet：
Wherein：S represents switching function,Represent S differential；X ∈ R are state variable,Represent x differential；β>0；P, q are just strange
Number, it is controller parameter, φ that p, which is more than q, φ and γ,>0, γ>0.
3. the UPFC control methods of quick Terminal sliding moding structures according to claim 2, it is characterised in that：Step
The controller of design parallel connection side Terminal Sliding mode variable structure controls comprises the following steps that described in three：
It is determined that the structure of quick Terminal Sliding mode variable structure systems, is designed according to quick Terminal Sliding Mode Controllers
Method designs parallel inverter control strategy, the state variable of selecting system
x1=iEd
x2=iEq
Take sliding mode variable s1And s2, and derivation
According to parallel inverter state equation,
And take the quick Terminal sliding-mode surfaces of second order,
The parallel inverter control strategy of final quick Terminal Sliding mode variable structure controls is obtained, namely
4. the UPFC control methods of quick Terminal sliding moding structures according to claim 3, it is characterised in that：Step
The step of controller of series side Terminal Sliding mode variable structure controls is designed described in four is as follows：
Choose state variable u2dAnd u2q, the quick Terminal sliding-mode surfaces of second order obtain quick Terminal Sliding mode variable structure controls
Series connection converter Control strategy：
5. the UPFC control methods of quick Terminal sliding moding structures according to claim 4, it is characterised in that：Step
The controller step that the Terminal Sliding mode variable structure controls of DC capacitor link are designed described in five is as follows：
The state variable x=u of selecting systemdc, take sliding mode variableTake synovial membrane face
Consider the power relation of DC bus-bar voltage, obtain electric capacity C control electric current：
Wherein：k、k1、k2It is controller parameter, is all higher than 0；udcRepresent DC tache voltage；iloadRepresent load current.
6. the UPFC control methods of quick Terminal sliding moding structures according to claim 5, it is characterised in that：Step
Target desired value described in six is calculated by following formula and tried to achieve：
In formula：P, Q represent that circuit is active and reactive power desired value respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510549500.5A CN105119281B (en) | 2015-08-31 | 2015-08-31 | The UPFC control methods of quick Terminal sliding moding structures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510549500.5A CN105119281B (en) | 2015-08-31 | 2015-08-31 | The UPFC control methods of quick Terminal sliding moding structures |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105119281A CN105119281A (en) | 2015-12-02 |
| CN105119281B true CN105119281B (en) | 2017-08-04 |
Family
ID=54667207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510549500.5A Active CN105119281B (en) | 2015-08-31 | 2015-08-31 | The UPFC control methods of quick Terminal sliding moding structures |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105119281B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105629730B (en) * | 2016-01-12 | 2018-03-27 | 江苏省电力公司电力科学研究院 | A kind of UPFC control methods based on neural networks sliding mode control |
| CN108574282A (en) * | 2018-05-02 | 2018-09-25 | 燕山大学 | A kind of flow control method based on the UPFC of nonlinear Control in micro-capacitance sensor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102437572A (en) * | 2011-12-21 | 2012-05-02 | 武汉理工大学 | Power flow control system |
| CN102778840A (en) * | 2012-08-09 | 2012-11-14 | 武汉大学 | IST control system based on sliding mode variable structure and control method of IST control system |
| CN103701131A (en) * | 2013-12-31 | 2014-04-02 | 武汉大学 | Topological structure and control method of improved SEN transformer |
-
2015
- 2015-08-31 CN CN201510549500.5A patent/CN105119281B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102437572A (en) * | 2011-12-21 | 2012-05-02 | 武汉理工大学 | Power flow control system |
| CN102778840A (en) * | 2012-08-09 | 2012-11-14 | 武汉大学 | IST control system based on sliding mode variable structure and control method of IST control system |
| CN103701131A (en) * | 2013-12-31 | 2014-04-02 | 武汉大学 | Topological structure and control method of improved SEN transformer |
Non-Patent Citations (2)
| Title |
|---|
| 多端统一潮流控制器的建模分析;管春等;《重庆大学学报（自然科学版）》;20041231;第27卷(第12期);第37-41页 * |
| 广义系统的快速终端滑模控制;梁家荣等;《电子科技大学学报》;20110131;第40卷(第1期);第11-15页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105119281A (en) | 2015-12-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109659969B (en) | A kind of judgement of flexible DC transmission dynamic stability and control method | |
| CN104716886B (en) | based on virtual impedance voltage type converter virtual synchronous motor control method | |
| CN105958515B (en) | Fixed time dynamic surface high-order sliding-mode suppression method for chaotic oscillation of power system | |
| CN109830966B (en) | Three-phase four-wire system electric energy quality comprehensive treatment device and control method and system thereof | |
| CN110112940A (en) | A kind of PWM rectifier adaptive sliding mode QPIR control method under the β coordinate system based on α | |
| CN105576646B (en) | VSC MTDC system balancings control systems and its method based on additional marker signal | |
| CN105244901B (en) | A kind of nonlinear decentralized control method of HVDC transmission system | |
| CN106655234B (en) | The analysis method that a kind of line impedance and dominant eigenvalues influence broad sense short-circuit ratio | |
| CN107611971A (en) | For the net side inverter resonance full-order sliding mode control method of Voltage Harmonic distortion operating mode | |
| CN103279590A (en) | Initial self-correction computation method of interface power in electrical power system hybrid real-time simulation | |
| CN102801178B (en) | Direct-current transmission additional control method in frequency domain analysis | |
| Huang et al. | HVDC controls for power system stability | |
| CN106300386B (en) | Inhibit the Frequency servo method of power grid sub-synchronous oscillation based on SVG dynamic | |
| CN101719678B (en) | No-load cutting-in modeling and experimental method of double-fed type wind-driven generator | |
| CN111177932B (en) | Modeling method for improving electromagnetic transient simulation speed of flexible substation | |
| CN105119281B (en) | The UPFC control methods of quick Terminal sliding moding structures | |
| CN109327037A (en) | A kind of layer-specific access direct-current commutation failure prevention and control setting method and device | |
| CN105629730A (en) | UPFC control method based on nerve network sliding mode control | |
| CN106712068A (en) | Parallel hybrid DC power transmission system and reactive power regulation optimization method thereof | |
| CN107069793A (en) | It is a kind of to reduce the method and system of layer-specific access direct-current commutation failure risk | |
| CN104779632B (en) | Based on the energy storage system control method under different mode in micro-capacitance sensor | |
| CN109787266A (en) | Extra-high voltage direct-current complex fault on-line analysis decision-making technique and system | |
| CN106329520A (en) | PSASP (Power System Analysis Software Package)-based UPFC (Unified Power Flow Controller) modeling method | |
| CN107453616A (en) | Coordinate the adjustment circuit of control energy Fast-Balance based on double PWM | |
| CN106533238A (en) | Voltage compensation-based grid-connected inverter control method for marine electrical system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |