CN109787258A - A kind of control system and method for V/v tractive power supply system negative-sequence current - Google Patents
A kind of control system and method for V/v tractive power supply system negative-sequence current Download PDFInfo
- Publication number
- CN109787258A CN109787258A CN201910153030.9A CN201910153030A CN109787258A CN 109787258 A CN109787258 A CN 109787258A CN 201910153030 A CN201910153030 A CN 201910153030A CN 109787258 A CN109787258 A CN 109787258A
- Authority
- CN
- China
- Prior art keywords
- current
- transformer
- supply
- phase
- supply arm
- 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.)
- Granted
Links
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
- Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase networks
Abstract
The invention discloses the control systems and method of a kind of V/v tractive power supply system negative-sequence current, system includes the first supply arm, the second supply arm, the first step-down transformer, the second step-down transformer and railway power regulator, railway power regulator includes two ac circuits, two current transformers and DC loop, and method includes detecting the instantaneous value of two supply arm load currents；The phase and virtual value of two supply arm load currents are obtained using single-phase phase-locked loop；And then the reference instruction watt current virtual value of two supply arms and the virtual value of reference instruction reactive current are obtained, to obtain the reference instruction electric current of two current transformers；The output voltage of current transformer is obtained by no source policy according to reference instruction electric current, so that railway power regulator output electric current is tracked control.The mathematical model of RPC is converted Hamilton model by the present invention, proposes a kind of relatively simple Passive Shape Control strategy based on PCHD model, has robustness good, fast response time designs the advantages that simple.
Description
Technical field
The invention belongs to power quality controlling technical fields, more particularly, to a kind of V/v tractive power supply system negative phase-sequence electricity
The control system and method for stream.
Background technique
With the fast development of modern power electronic and automatic control technology, the use in railway systems is increasingly wide
General, this is filled with huge vigor for the development of modern railways system, but also proposes choose to tractive power supply system at the same time
War.The mode of connection of tractive transformer and the power supply driving method of electric locomotive, can cause certain journey to tractive power supply system
The pollution of degree, this pollution bring utility network and the safe and stable, efficient of electric locomotive, economical operation and control
Very important negative influence.Under the system impedance effect of electric railway three phase network, the negative-sequence current in power grid can draw
Negative sequence voltage is played, the imbalance of three-phase electricity voltage on line side is caused, its negative phase-sequence content is generally evaluated with voltage unbalance factor.China
The negative phase-sequence problem of electric railway is mainly reflected in the weaker area of some network systems, with high-power electric locomotive
Constantly universal, negative phase-sequence problem will become an importance of power quality problem, and negative-sequence current mainly has increase synchronous motor
It is lost, reduces transformer utilization factor, leads to the harm such as relay equipment malfunction.It is each according to being differently formed for tractive transformer used
The tractive power supply system of seed type, V/v tractive power supply system use V/v tractive transformer, which is connected into " V "
Font, intermediate endpoint are connected to track, other two endpoint is connected respectively in A, B two-phase, and the secondary side of transformer is also connected into " V "
Font, intermediate endpoint are connected to track, other two endpoint is connected respectively on two neighboring supply arm.Three-phase V/v transformer
The advantage simple using its structure, capacity utilization is high is used as Chinese Railway tractive power supply system, but three-phase V/v transformer is not
Balancing transformer, when two supply arm active power of three-phase V/v Circuit Fault on Secondary Transformer are equal, three-phase current side there are still
50% negative-sequence current.Therefore, it is worth deep using the negative sequence management method of the electrified railway power supply system of three-phase V/v transformer
Enter research.
Chinese Magazines " Proceedings of the CSEE " the 7th phase entitled " traction substation power quality of volume 31 in 2011
Mixing Dynamic control technology " for V/V tractive transformer disclose a kind of thyristor switchable capacitor by multistage large capacity and
The low cost mixing dynamic compensating system that one low capacity static reactive generator is constituted.Thyristor switchable capacitor is according to load
Grading compensation is carried out to reactive power, static reactive generator compensates thyristor switchable capacitor compensation difference, and passes through
Control is optimized to reduce negative-sequence current to two-arm reactive power.Negative-sequence current can not be fully compensated in the mentioned system of article, and
And the switching of thyristor switchable capacitor influences control effect.Chinese Magazines " JOURNAL OF JISHOU UNIVERSITY " the 2nd phase of volume 38 in 2017
Entitled " railway power regulator current resonance controls under rest frame " devises the railway function based on V/v tractive transformer
Quasi- ratio resonance (QPR) controller of rate adjuster, mentioned control strategy can be fully compensated negative-sequence current, but the control
The response speed of strategy is slow, and dynamic property is insufficient.
Summary of the invention
Aiming at the above defects or improvement requirements of the prior art, the present invention provides a kind of improvement V/v tractive power supply systems
The control method of negative phase-sequence, thus solve the prior art there are V/v tractive power supply system to utility network cause negative phase-sequence pollution etc. skills
Art problem.
To achieve the above object, it is an aspect of this invention to provide that providing a kind of V/v tractive power supply system negative-sequence current
Control system, including the first supply arm, the second supply arm, the first step-down transformer, the second step-down transformer and railway power tune
Device is saved, railway power regulator passes through the first step-down transformer respectively and the second step-down transformer is connected in parallel on the first supply arm and the
Between two supply arms；
Railway power regulator includes two ac circuits, two current transformers and DC loop, and the first ac circuit is by the
One resistance and the first inductance are composed in series, and the second ac circuit is composed in series by second resistance and the second inductance, the first current transformer
Be single-phase electricity source converter with the second current transformer, altogether there are two bridge arm, each bridge arm by two groups of turn-off devices and
Its corresponding inverse parallel freewheeling diode is constituted, and DC loop is made of DC bus capacitor, the first current transformer and the second current transformer
Share same DC loop.
It is another aspect of this invention to provide that providing a kind of control method of V/v tractive power supply system negative-sequence current, wrap
It includes:
The railway power regulator being connected between two supply arms passes through two supply arm load electricity of Passive Shape Control policy control
Pressure；
Detect the instantaneous value i of two supply arm load currents1L、i2L；
The phase of two supply arm load currents is obtained using single-phase phase-locked loop according to the instantaneous value of two supply arm load currents
θ1、θ2, and the virtual value I of two supply arm load currents is obtained based on instantaneous reactive power theory1L、I2L；
The reference instruction watt current for obtaining two supply arms according to the phase of two supply arm load currents and virtual value is effective
The virtual value of value and reference instruction reactive current, and then obtain the reference instruction electric current of two current transformers；
The output voltage of current transformer is obtained by no source policy according to reference instruction electric current, so that railway power regulator is defeated
Electric current is tracked control out.
Wherein, the reference instruction watt current virtual value I of two supply arms1cpref、I2cprefIt respectively indicates are as follows:
The reference instruction reactive current virtual value I of two supply arms1cqref、I2cqrefIt respectively indicates are as follows:
The reference instruction electric current i ' of two current transformers1cref、i′2crefIt respectively indicates are as follows:
Wherein, The respectively electricity of two step-down transformers
Pressure ratio.
Further, no source policy includes that railway power regulator passes through Port-Controlled Hamiltonian Theory model output SPWM letter
Number, control current transformer output voltage is consistent with reference voltage.Wherein, it is expressed as with the Port-Controlled Hamiltonian Theory model to dissipate:
Wherein, L1、L2Respectively two current transformer outputting inductances, R1、R1Respectively two current transformer output resistances, i '1c、i′2cPoint
Not Wei two current transformers output electric current, u '1s、u′2sThe respectively voltage of two step-down transformer low-pressure sides, u1c、u2cRespectively two become
Flow the output voltage of device.
In general, through the invention it is contemplated above technical scheme is compared with the prior art, using install additional railway function
The thinking of rate adjuster (RPC, Railway Static Power Conditioner) bears V/v tractive power supply system generation
Sequence electric current is administered.The present invention converts the mathematical model of RPC to the mathematic(al) representation under Hamilton model, basic herein
On, a kind of relatively simple Passive Shape Control strategy based on PCHD model is proposed, which has robustness good, response
Speed is fast, designs the advantages that simple.
Detailed description of the invention
Fig. 1 is V/v tractive power supply system topology diagram provided in an embodiment of the present invention；
Fig. 2 is V/v tractive power supply system negative sequence compensation schematic diagram provided in an embodiment of the present invention；
Fig. 3 is negative-sequence current detection figure provided in an embodiment of the present invention；
Fig. 4 is that reference instruction electric current provided in an embodiment of the present invention calculates structure chart；
Fig. 5 is RPC main circuit diagram provided in an embodiment of the present invention；
Fig. 6 is Passive Shape Control block diagram provided in an embodiment of the present invention；
Fig. 7 is entire railway power regulator control strategy figure provided in an embodiment of the present invention；
Fig. 8 (a) is that the supply arm 1 that the embodiment of the present invention 1 provides should compensate and the practical simulation waveform for compensating electric current；
Fig. 8 (b) is that the supply arm 2 that the embodiment of the present invention 1 provides should compensate and the practical simulation waveform for compensating electric current；
Fig. 8 (c) is the power network current simulation waveform that the embodiment of the present invention 1 provides；
Fig. 8 (d) is the power network current negative sequence component simulation waveform that the embodiment of the present invention 1 provides；
Fig. 8 (e) is the power network current positive-sequence component simulation waveform that the embodiment of the present invention 1 provides；
Fig. 9 (a) is that the supply arm 1 that the embodiment of the present invention 2 provides should compensate and the practical simulation waveform for compensating electric current；
Fig. 9 (b) is that the supply arm 2 that the embodiment of the present invention 2 provides should compensate and the practical simulation waveform for compensating electric current；
Fig. 9 (c) is the power network current simulation waveform that the embodiment of the present invention 2 provides；
Fig. 9 (d) is the power network current negative sequence component simulation waveform that the embodiment of the present invention 2 provides；
Fig. 9 (e) is the power network current positive-sequence component simulation waveform that the embodiment of the present invention 2 provides；
Figure 10 (a) is that the supply arm 1 that the embodiment of the present invention 3 provides should compensate and the practical simulation waveform for compensating electric current
Figure；
Figure 10 (b) is that the supply arm 2 that the embodiment of the present invention 3 provides should compensate and the practical simulation waveform for compensating electric current
Figure；
Figure 10 (c) is the power network current simulation waveform that the embodiment of the present invention 3 provides；
Figure 10 (d) is the power network current negative sequence component simulation waveform that the embodiment of the present invention 3 provides；
Figure 10 (e) is the power network current positive-sequence component simulation waveform that the embodiment of the present invention 3 provides.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.As long as in addition, technical characteristic involved in the various embodiments of the present invention described below
Not constituting a conflict with each other can be combined with each other.
Each primary variables or the physical significance of abbreviation involved in the embodiment of the present invention are listed in the table below in 1.
Table 1
Fig. 1 is the topology diagram of control system provided in an embodiment of the present invention, and whole system mainly includes that V/v traction becomes
Depressor, supply arm, electric locomotive, step-down transformer and installation RPC.The network voltage of three-phase 220kV becomes through V/v transformer
The single-phase voltage of 2 27.5kV, is connected respectively in the supply arm of tractive power supply system.After the RPC warp path filter of installation
By way of step-down transformer on parallel connection access supply arm, for being compensated to supply arm electric current, when there is electric locomotive fortune
When row, by effective control to RPC, the negative-sequence current that V/v tractive power supply system generates in public electric wire net can be eliminated.
Fig. 2 (a) is the vectogram of tractive power supply system related physical quantity, it is assumed that the load current on supply arm 2, which is greater than, to be supplied
Electric arm 1.In figureRespectively power grid ABC three-phase voltage,The respectively voltage of supply arm 1 and 2,The respectively load current of supply arm 1 and 2.θ1、θ2The respectively power-factor angle of supply arm 1 and 2.
Fig. 2 (b) is the schematic diagram for compensating reactive load.It willAlongDirection and verticalDirection divided
Solution similarly willAlongDirection and verticalDirection decomposed, active and reactive current virtual value difference
For
I1Lp=I1L cosθ1
I1Lq=I1L sinθ1
I2Lp=I2L cosθ2
I2Lq=I2L sinθ2
I in formula1L、I2LRespectivelyVirtual value.
It is I that two current transformers of RPC issue size respectively1Lq、I2LqReactive current be used to offset reactive load, such two
The load of supply arm is compensated for as purely resistive load.
Fig. 2 (c) is the schematic diagram for shifting two supply arm watt currents.By control strategy by the watt current of supply arm 2
Equal to the watt current of supply arm 1.The virtual value for the watt current for so needing to shift is respectively
Fig. 2 (d) is to compensate the idle schematic diagram of negative phase-sequence.After active transfer, watt current reaches balance in two-arm, still deposits
In negative-sequence current, also need to compensate the idle electric current for making supply arm 1 of corresponding negative phase-sequence and A same phase, the electric current of supply arm 2 with
B same phase, then the virtual value for the negative phase-sequence reactive current for needing to shift is respectively
To sum up, two current transformer of RPC be respectively necessary for compensation reactive component virtual value be
Two current transformer of RPC be respectively necessary for compensation active component virtual value be
Therefore, the compensation electric current that the railway power regulator should export are as follows:
Wherein, The respectively electricity of two step-down transformers
Pressure ratio.
Fig. 3 is negative phase-sequence current detecting figure, and the real-time detection of electric current is realized using instantaneous power theory, and wherein LPF is low pass
Filter.According to instantaneous power theory, load current in two-arm is distinguished to corresponding synchronization signal sin (ω1t-30°-
θ1)、sin(ω1t-90°-θ2) be multiplied, it obtains load instantaneous watt current in two-arm and is loaded after low-pass filtered processing
The virtual value of instantaneous active electric current, the virtual value of active and reactive electric current should be exported by finally finding out two current transformer of RPC.
Fig. 4 is that reference instruction electric current provided in an embodiment of the present invention calculates structure chart, is analyzed the phase of Fig. 2, with
1 voltage of supply armPhase be reference direction, find out the power-factor angle γ of 1 locomotive load of supply arm1, thus obtain
i1crefPhase.It is then possible to find out i1crefAmplitudeDue to step-down transformer T1In the presence of by i1crefMultiply
With no-load voltage ratio kT1Obtain VSC1Compensate the reference instruction electric current i ' of negative phase-sequence1cref.Similarly, VSC can be acquired2Reference instruction electric current
i′2cref。
Fig. 5 is the main circuit of RPC, fixed based on Kirchoff s voltage to realize effective control to output current of converter
Rule obtains RPC main circuit mathematical model are as follows:
In formula, L1、L2Respectively two current transformer outputting inductances, R1、R1Respectively two current transformer output resistances, i '1c、i′2cPoint
Not Wei two current transformers output electric current, u '1s、u′2sThe respectively voltage of two step-down transformer low-pressure sides, u1c、u2cRespectively two become
Flow the output voltage of device.
Further, to realize control target using Passive Shape Control strategy, RPC main circuit mathematical model need to be converted to
Mathematic(al) representation under PCHD model, may be expressed as:
In formula, x (t), u (t) and y (t) respectively indicate the output of system mode, the input of control and system.The shape of system
State and input variable are respectively as follows:
The Hamilton energy function of system is
The interconnection matrix and damping matrix of system are shown below, and J=-JTWith
Passive Shape Control target based on PCHD model is exactly to obtain control input u, it is ensured that system Asymptotic Stability is desired
Equalization point x*Near.
Construct the closed loop expectation energy function H being added after feedback controld(x), so that it is in x*Place is minimized.It seeks
Feedback control u=β (x) is sought, closed-loop system is made
In formula, Jd、Respectively desired interconnection and damping matrix, and
If interconnection and damping matrix undetermined is
The desired Hamilton function of closed-loop system is taken to be
Derive that corresponding control law is
Then it is obtained in conjunction with the mathematic(al) representation under PCHD model
Feedback u=β (x), which can then be solved, is
According to above-mentioned control law, can obtain
Work as x=x*When,AndProve HdIn x*Place obtains minimum, and entire closed-loop system exists
Equalization point be it is asymptotically stable, the block diagram of Passive Shape Control is as shown in Figure 6.
Fig. 7 is entire railway power regulator control strategy figure provided in an embodiment of the present invention, U in figuredcIndicate back-to-back
The capacitance voltage of current transformer.
Illustrated below with two specific examples:
Embodiment 1
For the validity and feasibility for verifying control strategy proposed by the invention, model as shown in Figure 1 has been built.This
1 zero load of supply arm is arranged in example, and supply arm 2 has electric locomotive operation, and RPC outlet inductance is set to 5mH, step-down transformer T1
And T2No-load voltage ratio be 27.5:1, the control target of DC voltage is 5kV.RPC comes into operation after setting 5s.
Now Simulation Example result is analyzed to illustrate that (this patent is not related to harmonic wave for effectiveness of the invention and feasibility
Electric current).Since Fig. 8 (a) as can be seen that output compensates electric current supply arm 1 after 5s, and track reference instruction electricity well
Stream；Since Fig. 8 (b) as can be seen that 5s after supply arm 2 equally output compensation electric current, and well track reference instruction electricity
Stream；It is contrary from Fig. 8 (c) as can be seen that power grid A phase current is that 0, B phase and C phase current are equal in magnitude before 5s, after 5s, warp
Cross the control of RPC, power grid A, B, C three-phase balance；From Fig. 8 (d) as can be seen that before 5s power network current there are negative-sequence current,
Negative-sequence current is eliminated after 5s；From Fig. 8 (e) as can be seen that being consistent before 5s with the electric current positive-sequence component of 5s.
Embodiment 2
2 zero load of supply arm is arranged in this example, and supply arm 1 has electric locomotive operation, and RPC outlet inductance is equally respectively 5mH,
The no-load voltage ratio of step-down transformer T1 and T2 are 27.5:1, and the control target of DC voltage is 5kV.Equally, RPC is put into after 5s is arranged
It uses.
Now Simulation Example result is analyzed.Since Fig. 9 (a) as can be seen that output compensation is electric supply arm 1 after 5s
Stream, and track reference instruction current well；Since Fig. 9 (b) as can be seen that 5s after supply arm 2 equally output compensation electricity
Stream, and track reference instruction current well；From Fig. 9 (c) as can be seen that power grid C phase current is 0, A phase and B phase electricity before 5s
Flow it is equal in magnitude, it is contrary, after 5s, power grid A, B, C three-phase balance；From Fig. 9 (d) as can be seen that 5s before power network current
There are negative-sequence current, negative-sequence current is eliminated after 5s；From Fig. 9 (e) as can be seen that keeping one with the electric current positive-sequence component of 5s before 5s
It causes.
Embodiment 3
This example setting supply arm 1 and supply arm 2 have electric locomotive operation, and the Electric Locomotive of supply arm 2 is big
In the Electric Locomotive of supply arm 1.RPC outlet inductance is respectively 5mH, and the no-load voltage ratio of step-down transformer T1 and T2 are 27.5:1,
DC voltage is 5kV.Equally, RPC comes into operation after 5s being arranged.
Now Simulation Example result is analyzed.Since Figure 10 (a) as can be seen that output compensation is electric supply arm 1 after 5s
Stream, and track reference instruction current well；Since Figure 10 (b) as can be seen that 5s after supply arm 2 equally output compensation electricity
Stream, and track reference instruction current well；From Figure 10 (c) as can be seen that 5s before power grid A, B, C phase three-phase have electric current and
Three-phase current unbalance, coming into operation through RPC after 5s, the electric current of power grid A, B, C become three-phase symmetrical；It can be with from Figure 10 (d)
Find out, power network current eliminates negative-sequence current after 5s there are negative-sequence current before 5s；From Figure 10 (e) as can be seen that with 5s's before 5s
Electric current positive-sequence component is consistent.
Three above example has absolutely proved that RPC administers the validity and feasibility of V/v tractive power supply system negative phase-sequence method.
Specific embodiment is presented above, but the present invention is not limited to embodiment described above.The present invention
Basic ideas be above-mentioned basic scheme, for those of ordinary skill in the art, introduction according to the present invention is designed each
The model of kind deformation, formula, parameter do not need to spend creative work.The case where not departing from the principle and spirit of the invention
Under to embodiment carry out change, modification, replacement and modification still fall in protection scope of the present invention.
Claims (6)
1. a kind of control system of V/v tractive power supply system negative-sequence current, which is characterized in that supplied including the first supply arm, second
Electric arm, the first step-down transformer, the second step-down transformer and railway power regulator, railway power regulator pass through described respectively
First step-down transformer and second step-down transformer are connected in parallel between first supply arm and second supply arm；
The railway power regulator includes two ac circuits, two current transformers and DC loop, and the first ac circuit is by the
One resistance and the first inductance are composed in series, and the second ac circuit is composed in series by second resistance and the second inductance, the first current transformer
Be single-phase electricity source converter with the second current transformer, altogether there are two bridge arm, each bridge arm by two groups of turn-off devices and
Its corresponding inverse parallel freewheeling diode is constituted, and DC loop is made of DC bus capacitor, the first current transformer and the second current transformer
Share same DC loop.
2. a kind of control method of V/v tractive power supply system negative-sequence current characterized by comprising
The railway power regulator being connected between two supply arms passes through two supply arm load voltage of Passive Shape Control policy control；
Detect the instantaneous value i of the two supply arms load current1L、i2L；
The phase of two supply arm load currents is obtained using single-phase phase-locked loop according to the instantaneous value of the two supply arms load current
θ1、θ2, and the virtual value I of two supply arm load currents is obtained based on instantaneous reactive power theory1L、I2L；
The reference instruction watt current for obtaining two supply arms according to the phase of the two supply arms load current and virtual value is effective
The virtual value of value and reference instruction reactive current, and then obtain the reference instruction electric current of two current transformer；
The output voltage of current transformer is obtained by no source policy according to the reference instruction electric current, so that railway power regulator is defeated
Electric current is tracked control out.
3. according to the method described in claim 2, it is characterized in that, the reference instruction watt current virtual value of two supply arm
I1cpref、I2cprefIt respectively indicates are as follows:
The reference instruction reactive current virtual value I of two supply arm1cqref、I2cqrefIt respectively indicates are as follows:
4. according to the method described in claim 2, it is characterized in that, the reference instruction electric current i ' of two current transformer1cref、
i′2crefIt respectively indicates are as follows:
Wherein, The voltage ratio of respectively two step-down transformers.
5. according to the method described in claim 2, it is characterized in that, the no source policy includes that railway power regulator passes through end
Mouth Controlled Hamiltonian Theory model exports SPWM signal, and control current transformer output voltage is consistent with reference voltage.
6. according to the method described in claim 5, it is characterized in that, the Passive Shape Control strategy is to breathe out with the Port-Controlled to dissipate
Close model:
Wherein, L1、L2Respectively two current transformer outputting inductances, R1、R1Respectively two current transformer output resistances, i '1c、i′2cRespectively
The output electric current of two current transformers, u '1s、u′2sThe respectively voltage of two step-down transformer low-pressure sides, u1c、u2cRespectively two current transformers
Output voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910153030.9A CN109787258B (en) | 2019-02-28 | 2019-02-28 | Control system and method for negative sequence current of V/V traction power supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910153030.9A CN109787258B (en) | 2019-02-28 | 2019-02-28 | Control system and method for negative sequence current of V/V traction power supply system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109787258A true CN109787258A (en) | 2019-05-21 |
| CN109787258B CN109787258B (en) | 2021-03-26 |
Family
ID=66486040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910153030.9A Expired - Fee Related CN109787258B (en) | 2019-02-28 | 2019-02-28 | Control system and method for negative sequence current of V/V traction power supply system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109787258B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113595404A (en) * | 2021-07-07 | 2021-11-02 | 西南交通大学 | Back-to-back converter control method of new energy traction power supply system |
| CN114530856A (en) * | 2021-12-01 | 2022-05-24 | 湘潭大学 | Railway power regulator voltage fluctuation compensation method based on dynamic voltage restorer |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007189863A (en) * | 2006-01-16 | 2007-07-26 | Toshiba Mitsubishi-Electric Industrial System Corp | Control device of voltage fluctuation compensator for electric railway |
| CN101567565A (en) * | 2009-05-31 | 2009-10-28 | 湖南大学 | System for compensating combined negative sequence current of power regulator and static var compensator |
| CN103545825A (en) * | 2013-11-11 | 2014-01-29 | 武汉大学 | Electromagnetic mixed compensation system for quality of electric energy in electrified railways |
| CN105932695A (en) * | 2016-05-17 | 2016-09-07 | 湖南大学 | Multi-level railway power regulator and passive non-linear control method therefor |
| CN107039978A (en) * | 2016-11-14 | 2017-08-11 | 上海电力学院 | The signal detection algorithm of electric railway electric energy quality comprehensive treatment device |
-
2019
- 2019-02-28 CN CN201910153030.9A patent/CN109787258B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007189863A (en) * | 2006-01-16 | 2007-07-26 | Toshiba Mitsubishi-Electric Industrial System Corp | Control device of voltage fluctuation compensator for electric railway |
| CN101567565A (en) * | 2009-05-31 | 2009-10-28 | 湖南大学 | System for compensating combined negative sequence current of power regulator and static var compensator |
| CN103545825A (en) * | 2013-11-11 | 2014-01-29 | 武汉大学 | Electromagnetic mixed compensation system for quality of electric energy in electrified railways |
| CN105932695A (en) * | 2016-05-17 | 2016-09-07 | 湖南大学 | Multi-level railway power regulator and passive non-linear control method therefor |
| CN107039978A (en) * | 2016-11-14 | 2017-08-11 | 上海电力学院 | The signal detection algorithm of electric railway electric energy quality comprehensive treatment device |
Non-Patent Citations (2)
| Title |
|---|
| 程启明等: "电网不平衡下DFIG网侧变换器侧基于PCHD模型的无源控制", 《电网技术》 * |
| 罗浩元: "电气化铁路电能质量综合补偿系统控制策略研究", 《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 |
|---|---|---|---|---|
| CN113595404A (en) * | 2021-07-07 | 2021-11-02 | 西南交通大学 | Back-to-back converter control method of new energy traction power supply system |
| CN114530856A (en) * | 2021-12-01 | 2022-05-24 | 湘潭大学 | Railway power regulator voltage fluctuation compensation method based on dynamic voltage restorer |
| CN114530856B (en) * | 2021-12-01 | 2023-03-14 | 湘潭大学 | Railway power regulator voltage fluctuation compensation method based on dynamic voltage restorer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109787258B (en) | 2021-03-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102136729B (en) | Series multi-level SVG (scalable vector graphics) topological structure based on phase shifting multiple winding rectifier transformer and control method thereof | |
| CN109830966B (en) | Three-phase four-wire system electric energy quality comprehensive treatment device and control method and system thereof | |
| CN104868762B (en) | A kind of electric power electric transformer and its control method of scattered energy storage | |
| CN108233394A (en) | A kind of capacitive coupling voltage balancing control method suitable for Y type chain types STATCOM | |
| CN107968424A (en) | Flexible DC power transmission hierarchical control method | |
| CN106712089A (en) | Multifunctional distributed power supply grid-connection device based on nine-switch-tube inverter | |
| CN109787258A (en) | A kind of control system and method for V/v tractive power supply system negative-sequence current | |
| Rajasekhar et al. | Harmonics reduction and power quality improvement by using DPFC | |
| Cleary-Balderas et al. | Hybrid active power filter based on the IRP theory for harmonic current mitigation | |
| Zhao et al. | Research on topology and control strategy of railway power regulator based on MMC | |
| Hou et al. | Virtual negative impedance droop method for parallel inverters in microgrids | |
| Xu et al. | An energy-based control scheme for optimal power quality management in 12-pulse rectifier integrated distribution systems | |
| Chen et al. | Unified power quality management for traction substation groups connected to weak power grids | |
| Yuan et al. | A hybrid negative current compensation system for high-speed railway power system | |
| Roudsari et al. | A Z-source railway static power conditioner for power quality improvement | |
| CN112117784B (en) | Operation control method of virtual transformer | |
| CN111952995B (en) | Direct-current capacitor voltage balance control method under single-phase fault of power grid | |
| Chen et al. | Modeling and simulation of novel railway power supply system based on power conversion technology | |
| dos Santos Alonso et al. | Coordinated control of parallel power conditioners synthesizing resistive loads in single-phase AC microgrids | |
| CN207603218U (en) | A kind of intelligence controlled dynamic voltage adjusts flexible controller switching equipment | |
| Shu et al. | Advanced co-phase traction power supply simulation based on multilevel converter | |
| CN205160073U (en) | Novel electric Railway control of power quality system | |
| CN109936143A (en) | A kind of flexible controller switching equipment of intelligence controlled dynamic voltage adjusting | |
| Chen et al. | Compensation strategy Research of co-phase traction power supply system with Vv transformer under asymmetric grid voltage | |
| Fu et al. | Combined operation system of SVG and APF parallel bus under unbalanced grid |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210326 |