CN102882208A - Electric railway electric energy quality comprehensive treatment device control method - Google Patents
Electric railway electric energy quality comprehensive treatment device control method Download PDFInfo
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Abstract
The invention discloses an electric railway electric energy quality comprehensive treatment device control method. A single-phase multi-winding transformer secondary side is provided with a railway power regulator and a thyristor control filter. The railway power regulator is provided with more than two converters sharing a DC (direct current) side capacitor to form a back-to-back structure and connected with each other in parallel; and the AC (alternating current) output ends of the converters are connected to the M-phase and T-phase power supply seats through a connection electric reactor and a transformer. A winding of each transformer secondary side is respectively provided with more than two groups of thyristor control filters connected with each other in parallel; and each thyristor control filter is provided with more than two groups of filter branches connected with each other in parallel. The railway power regulator balances the active power between the M-phase and T-phase power supply seats. The thyristor control filter compensates for the reactive power of the M-phase or T-phase power supply arm and filters the harmonic wave. The method disclosed by the invention can realize comprehensive treatment of the negative sequence, harmonic wave and reactive power of the electric railway, and can properly reduce the active capacity so as to achieve the aims of improving the treatment effect and reducing the cost.
Description
Technical field
The present invention relates to a kind of control method of power quality controlling device, be specifically related to a kind of be applied to electric railway traction power supply system based on the SCOTT(Scott) control method of the electrified railway electric energy quality comprehensive treatment device of transformer-supplied.
Background technology
In recent years China's electric railway development is very rapid, has the advantages such as carrying capacity is strong, road speed is fast, energy savings is high, environmental pollution is little, for the fast development of national economy plays the important and pivotal role.Yet because electric locomotive is the high-power single-phase load, have the characteristics such as non-linear, asymmetry and fluctuation, in running, produce a large amount of negative phase-sequence, idle and harmonic current injection electrical network, make the problems such as voltage ripple of power network distortion, three-phase imbalance, power factor be low.Safe, the stable and economical operation of electric power system brought seriously influence.
For reducing electric railway to the impact of the electrical network quality of power supply, adopted at present various ways to solve both at home and abroad.The content relevant with present patent application mainly contains with Publication about Document in the middle of prior art:
Document one is that Tsing-Hua University applied on November 28th, 2003, and open on November 10th, 2004, and publication number is the Chinese invention patent application " electric energy quality controller for traction transformer station " of CN1545183A.This invention is made of a 3-phase power converter and a Scott (SCOTT) transformer, two quadrature single phase poaer supplies of traction transformer output are connected with two single-phase outputs of SCOTT transformer, the three-phase output end of 3-phase power converter and SCOTT transformer is in series, and its electric energy 3-phase power converter is the inverter that is parallel with electric capacity on the dc bus.The Scott that this system comprises (SCOTT) transformer only connects 3-phase power converter to the quarter-phase circuit of traction substation formation as isolating transformer, its weak point is: the three-phase inverter of output one phase ground connection, a unbalanced threephase load can be thought, the first-harmonic distortion of inverter output voltage can be caused; Three-phase inverter will be realized difficulty of transfer ratio that one of active power arrives another phase mutually.
Document two is that Southeast China University applied on 09 06th, 2010, and announces on December 15th, 2010, and publication No. is the Chinese invention patent application " quality of power supply integrated control method and the device that are used for electric railway traction electric power system " of CN101917011A.This invention comprises the passive filter that is made of No. 3 filters and bivalent high-pass filter and the voltage-source type convertor assembly of one group of band energy-storage battery group.The shortcoming of this patent is that device forms by nonadjustable electric capacity and inductance, send idle be a constant, therefore can't carry out dynamic compensation to traction load, easily form overcompensation or undercompensation, so that the traction substation power factor reduces, worsen the working voltage of traction net on the contrary.
Document three is that applied on 03 21st, 2011 the Jiangsu Province Power testing Institute Co., Ltd, and announces on 07 06th, 2011, and publication No. is the Chinese invention patent application " quality of power supply control and compensation device of electric railway " of CN102118027A.This invention comprises the passive filter and the one group of voltage-source type convertor assembly that are made of bivalent high-pass filter.Though this scheme can compensate electric iron electric power system power factor, and effectively controls the power quality problems such as harmonic wave, three-phase imbalance.But it is separately treated two supply arms of traction substation, has ignored influencing each other between two supply arms, as using the very fast active equipment of dynamic response, might make system unstable, is difficult for making two arms to reach load balanced state.
Summary of the invention
The purpose of this invention is to provide a kind of electrified railway electric energy quality comprehensive treatment device control method, this control method can effectively realize electric railway negative phase-sequence, harmonic wave and the idle comprehensive regulation, suitably reduce active capacity, reach the purpose of improving regulation effect and reducing cost.
In order to realize the foregoing invention purpose, the present invention specifically provides a kind of technic relization scheme of electrified railway electric energy quality comprehensive treatment device control method, and a kind of electrified railway electric energy quality comprehensive treatment device control method may further comprise the steps:
Secondary at single-phase multi winding transformer arranges railway power regulator and thyristor control filter;
At railway power regulator the current transformer parallel with one another that two above common DC lateral capacitances form the back to back structure forms is set, the ac output end of two current transformers all is connected to mutually Power Block and T Power Block mutually of M by linked reactor and single-phase multi winding transformer;
A winding at two single-phase multi winding transformer secondary arranges respectively thyristor control filter parallel with one another more than two groups, at the thyristor control filter filter branch parallel with one another more than two groups is set;
Active power between railway power regulator balance M phase Power Block and the T phase Power Block;
The thyristor control filter compensates and the filtering harmonic wave the reactive power of its place M phase supply arm or T phase supply arm respectively.
As the further improvement of a kind of electrified railway electric energy quality comprehensive treatment device of the present invention control method technical scheme, by corresponding detection and control, at M phase supply arm and T supply arm generation current respectively mutually
With
Respectively with M phase load electric current
With T phase load electric current
Obtain electric current after the addition
With
So that I
M=I
T, I
MAnd I
TBe respectively
With
Mould, electric current
With
The voltage-phase of phase place and M phase Power Block and T phase Power Block be consistent, to eliminate negative phase-sequence.
As the further improvement of a kind of electrified railway electric energy quality comprehensive treatment device of the present invention control method technical scheme, mutually in the Power Block, one of them is the heavy duty seat at M phase Power Block and T, and another is the underloading seat.Railway power regulator is transferred to the underloading seat with half of the active current difference of M phase load and T phase load from the heavy duty seat.
Further improvement as a kind of electrified railway electric energy quality comprehensive treatment device of the present invention control method technical scheme, thyristor control filter basis is the load lagging reactive power size of current of supply arm separately, provide corresponding capacitive reactive power electric current by the filter branch that drops into various combination, thus the perceptual reactive current that compensating load produces.
As the further improvement of a kind of electrified railway electric energy quality comprehensive treatment device of the present invention control method technical scheme, the thyristor control filter is set to filter branch three times, most of harmonic wave that the filtering load produces.
Further improvement as a kind of electrified railway electric energy quality comprehensive treatment device of the present invention control method technical scheme, the electrified railway electric energy quality comprehensive treatment device is by detecting and control, M phase supply arm and T mutually supply arm produce the leading electric current of phase place, by with the load current addition of M phase supply arm or T phase supply arm, make M phase Power Block and T mutually current effective value, the power-factor angle of Power Block equate, thereby eliminate negative phase-sequence.
As the further improvement of a kind of electrified railway electric energy quality comprehensive treatment device of the present invention control method technical scheme, the maximum output current of the current transformer of railway power regulator is I
P max/ n calculates according to following formula:
ε is the maximum permissible value of power system voltage degree of unbalance, tri-phase unbalance factor K
I=ε, n are the number of current transformer, α=e
J120 °, I
PT maxBe the maximum transfer electric current of railway power regulator, I
+Be electric power system forward-order current, I
-Be the electric power system negative-sequence current,
With
Be respectively the Three-phase Power Systems electric current.
Further improvement as a kind of electrified railway electric energy quality comprehensive treatment device of the present invention control method technical scheme, current transformer adopts independent control mode, pass through detection computations, the phase angle difference of control railway power regulator output current and voltage, the real component that need are compensated are assigned to mutually each current transformer reference current by way of compensation of Power Block of M phase Power Block and T
With
With the dc voltage tracking error through PI(Proportional Integral, proportional integral) the controller output variable is separately converted to the mutually Power Block active current reference instruction that is added to of M phase Power Block and T
With
In, obtain considering that DC voltage control is in interior reference instruction
With
Further improvement as a kind of electrified railway electric energy quality comprehensive treatment device of the present invention controlling party magic arts scheme, the compensation of thyristor control filter according to M phase Power Block and T mutually the reactive current size of Power Block carry out switching, the thyristor control filter adopts a grade compensation way, drops into different filter branch and prop up way under different situations.
As the further improvement of a kind of electrified railway electric energy quality comprehensive treatment device of the present invention controlling party magic arts scheme, the quantity of the filter branch of thyristor control filter is set to 3～4.
By implementing the technical scheme of a kind of electrified railway electric energy quality comprehensive treatment device of the invention described above control method, have following technique effect:
(1) the present invention can be to negative phase-sequence, harmonic wave and the idle comprehensive compensation of carrying out of electric railway, utilize simultaneously thyristor control filter cheaply to realize the idle adjusting of two supply arms, alternative railway power regulator compensates most of reactive capability, effectively reduce the railway power regulator capacity, reduced the cost of comprehensive treatment device;
(2) the present invention the compensation two supply arm harmonic waves and idle in, regulate the active current in two supply arms, make the active power between two Power Blocks reach poised state;
(3) effectively filtering triple harmonic current and part high order harmonic component of the present invention improved harmonic suppression effect;
(4) the present invention can compensate on the basis of negative phase-sequence at railway power regulator, further improves the negative sequence compensation effect and realizes the negative phase-sequence full remuneration;
(5) railway power regulator of the present invention takes to stagnate chain rate than Closed-loop Control Strategy, makes comprehensive treatment device have fast current tracking ability, finishes negative phase-sequence and harmonic compensation.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the system architecture diagram of a kind of embodiment of the applied electrified railway electric energy quality comprehensive treatment device of control method of the present invention;
Fig. 2 is the negative sequence compensation schematic diagram of a kind of embodiment of electrified railway electric energy quality comprehensive treatment device control method of the present invention;
Fig. 3 is the control principle block diagram of a kind of embodiment railway power regulator of electrified railway electric energy quality comprehensive treatment device control method of the present invention;
Among the figure: 1-railway power regulator, 2-thyristor control filter, 3-current transformer, 4-filter branch, the single-phase multi winding transformer of 5-, 6-linked reactor, 7-dc bus capacitor, 8-M phase Power Block, 9-T phase Power Block, 10-M phase load, 11-T phase load.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is a part of embodiment of the present invention, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
To shown in the accompanying drawing 3, provided the specific embodiment of a kind of electrified railway electric energy quality comprehensive treatment device of the present invention control method such as accompanying drawing 1, the invention will be further described below in conjunction with the drawings and specific embodiments.
Based on the tractive power supply system characteristics of SCOTT transformer, provided as shown in Figure 1 a kind of embodiment of electrified railway electric energy quality comprehensive treatment device.This device comprises: railway power regulator 1(Railway Static PowerConditioner, RPC) and thyristor control filter 2(Thyristor Controlled Filter, TCF), and control system.Railway power regulator 1 and thyristor control filter 2 are installed in the secondary of single-phase multi winding transformer 5.The former limit of single-phase multi winding transformer 5 only has a winding, and secondary has a plurality of windings.Wherein, railway power regulator 1 comprises that two above common DC lateral capacitances 7 form the current transformer parallel with one another 3 of back to back structure form, and dc bus capacitor 7 provides stable DC voltage for two current transformers 3.The M that the ac output end of two current transformers 3 all is connected to the SCOTT transformer by linked reactor 6 and single-phase multi winding transformer 5 is Power Block 8 and T Power Block 9 mutually mutually.Two current transformers 3 of railway power regulator 1 can be controlled to be controlled current source, can realize the two-way flow of active power between two arms, and can carry out harmonic wave and suppress and reactive power compensation.A winding of two single-phase multi winding transformer 5 secondary is separately installed with two groups of above thyristor control filters 2 parallel with one another, and every group of thyristor control filter 2 branch roads are identical.The M phase Power Block 8 that the winding of identical railway power regulator 1 branch road of many group parameters by single-phase multi winding transformer 5 secondary is connected to the SCOTT transformer and T be Power Block 9 mutually.Thyristor control filter 2 is controlled its switching by thyristor electronic switch, is equivalent to a fling-cut switch, has guaranteed that switching is rapid, has without impacting and itself not producing the advantages such as harmonic wave.The harmonic current that the filtering locomotive produces when capacitive reactive power is provided.Thyristor control filter 2 comprises two groups of above filter branch 4 parallel with one another, and filter branch 4 comprises anti-parallel thyristor valve group, capacitor C and the reactor L of mutual series connection.M phase load 10 and T phase load 11 are generally locomotive.
The operation principle of a kind of electrified railway electric energy quality comprehensive treatment device of the present invention is: by corresponding detection and control, at M phase supply arm and T supply arm generation current respectively mutually
With
Respectively with M phase load electric current
With T phase load electric current
Obtain electric current after the addition
With
So that I
M=I
T, I
MAnd I
TBe respectively
With
Mould, electric current
With
The voltage-phase of phase place and M phase Power Block 8 and T phase Power Block 9 be consistent, to eliminate negative phase-sequence.Electrified railway electric energy quality comprehensive treatment device of the present invention is by detecting and control, produce the leading electric current of phase place at two supply arms, by with the former load current addition of two supply arms, current effective value and the power-factor angle of Power Block 9 equate mutually so that M phase Power Block 8 is with T, thereby can eliminate negative phase-sequence, power factor reaches 1.Wherein,
With
Be respectively the mutually offset current of Power Block 9 thyristor control filters 2 of M phase Power Block 8 and T,
With
Be respectively the mutually offset current of Power Block 9 a n current transformer 3 of M phase Power Block 8 and T.
Be as shown in Figure 2 the negative sequence compensation schematic diagram of a kind of embodiment of electrified railway electric energy quality comprehensive treatment device of the present invention.Suppose that at M phase Power Block 8 and T one of them is the heavy duty seat mutually in the Power Block 9, another is the underloading seat.Be heavy duty seat such as the Building T, the Building M is the underloading seat.Railway power regulator 1 is transferred to the underloading seat with half of the active current difference of M phase load 10 and T phase load 11 from the heavy duty seat, and its value is:
As seen the power component in the compensation power is regulated by railway power regulator 1, effectively balance M phase Power Block 8 and the T active power of Power Block 9 mutually;
M phase Power Block 8 needs the reactive current of compensation to be:
T phase Power Block 9 needs the reactive current of compensation to be:
By accompanying drawing 2 as can be known, compensation preload electric current
With
Be reflected to former limit three-phase current respectively
With
Its amplitude is unequal and differ with voltage.Primary current is respectively after the compensation
With
Amplitude equates and is consistent with the original edge voltage phase preserving, has reached the target of negative phase-sequence and reactive power compensation.Simultaneously, thyristor control filter 2 is arranged to filter branch 3 times, most of harmonic wave that energy filtering locomotive produces.Therefore, the railway power regulator 1 main transfer active power of being responsible in the electrified railway electric energy quality comprehensive treatment device, reactive power and harmonic wave then are responsible for compensation by thyristor control filter 2.The capacity of railway power regulator 1 is reduced greatly, but has reached equally the effect of negative phase-sequence, the idle and harmonic wave comprehensive regulation.
The below further is described below Capacity design and the Compensation Strategies of electrified railway electric energy quality comprehensive treatment device railway power regulator 1 of the present invention and thyristor control filter 2.
The compensation capacity computational methods of railway power regulator 1 are as follows:
By formula (1) as can be known, when in the most serious situation, the locomotive load active current of M phase Power Block 8 is maximum, and the locomotive load of T phase Power Block 9 is zero.At this moment, railway power regulator 1 needs the active current of transfer to be to the maximum
Because the bearing power of SCOTT transformer-supplied system is large, consider to shift fully to gain merit by the most serious this situation, then railway power regulator 1 needs very large capacity.Therefore uneconomical, and this operating mode seldom occurs.
Consider that GB causes that to each user of electric power system the normal voltage degree of unbalance has a maximum permissible value ε, the maximum transfer electric current of establishing railway power regulator 1 when the most serious situation is I
P max, the reactive current of T phase Power Block 9 is by all being fallen to consider by 2 compensation of thyristor control filter at this moment.Take the A phase voltage as reference, then former limit three-phase current is:
Definition K
IBe tri-phase unbalance factor, its value is the ratio of three-phase negative/positive electric current with forward-order current.
According to K
IThe situation of=ε considers to draw I
P maxThereby, the capacity of definite railway power regulator 1.ε is the maximum permissible value of power system voltage degree of unbalance, tri-phase unbalance factor K
I=ε, n are the number of current transformer 3, α=e
J120 °, I
PT maxBe the maximum transfer electric current of railway power regulator 1, I
+Be electric power system forward-order current, I
-Be the electric power system negative-sequence current,
With
Be respectively the Three-phase Power Systems electric current.Railway power regulator 1 is made of n group current transformer 3, and then the maximum output current of every group of current transformer 3 is I
P max/ n.
The calculation of capacity method of thyristor control filter 2 is as follows:
The maximum reactive power compensation electric current I of thyristor control filter 2 parts is set
SMEquate with the maximum reactive current of locomotive load, that is: I
SM=I
Q maxThe quantity of the filter branch 4 of thyristor control filter 2 is determined by the maximum permissible current of maximum reactive current and wall scroll filter branch 4.As preferred embodiment a kind of, the quantity of the filter branch 4 of thyristor control filter 2 is set to 3～4.
Compensation policy of the present invention is taked instantaneous phase demodulation detection method, obtains respectively M phase Power Block 8 and the T mutually real component, the amplitude of idle component of Power Block 9 load currents.Then respectively railway power regulator 1 is taked different compensation policies with thyristor control filter 2.Railway power regulator 1 is comprised of many groups of back-to-back current transformers 3, every group of current transformer 3 by 2 independently single-phase converter consist of.As shown in Figure 3, current transformer 3 adopts independent control mode, by detection computations, the real component of need compensation is assigned to mutually each current transformer 3 reference current by way of compensation of Power Block 9 of M phase Power Block 8 and T
With
The dc voltage tracking error is separately converted to the mutually Power Block 9 active currents reference instruction that is added to of M phase Power Block 8 and T through PI controller output variable
With
In, obtain considering that DC voltage control is in interior reference instruction
With
Wherein, the U in the accompanying drawing 3
DCBe the middle dc voltage of the back-to-back converter 3 of railway power regulator 1, U
RefBe DC reference voltage.I
NmBe the actual offset current of n current transformer 3 of M phase Power Block 8 railway power regulators 1, I
NtActual offset current for n current transformer 3 of T phase Power Block 9 railway power regulators 1.
Two current transformers 3 of railway power regulator 1 take to stagnate chain rate than closed-loop control, make two current transformers, 3 output current track reference instruction currents, so that comprehensive treatment device has fast current tracking ability, finish negative phase-sequence and harmonic compensation.
The compensation of thyristor control filter 2 according to M phase Power Block 8 and T mutually the reactive current size of Power Block 9 carry out switching, thyristor control filter 2 adopts a grade compensation way, drops into different 4 ways of filter branch under different situations.Suppose to consider that by 4 branch roads each bar branch road capacity distributes according to 1:2:4:4, the switching branch road situation of then load reactive current under different situations is as shown in table 1 below.
The switching branch road information slip of table 1 load reactive current under different situations
Note: ● the branch road that represents this thyristor control filter 2 drops into state.
A kind of embodiment of electrified railway electric energy quality comprehensive treatment device control method may further comprise the steps:
Secondary at single-phase multi winding transformer 5 arranges railway power regulator 1 and thyristor control filter 2;
At railway power regulator 1 ac output end that two above common DC lateral capacitances 7 form 3, two current transformers 3 of current transformer parallel with one another of back to back structure forms is set and all is connected to mutually Power Block 8 and T Power Block 9 mutually of M by linked reactor 6 and single-phase multi winding transformer 5;
A winding at two single-phase multi winding transformer 5 secondary arranges respectively thyristor control filter 2 parallel with one another more than two groups, at thyristor control filter 2 filter branch parallel with one another more than two groups 4 is set;
Active power between railway power regulator 1 balance M phase Power Block 8 and the T phase Power Block 9;
By corresponding detection and control, at M phase supply arm and T supply arm generation current respectively mutually
With
Respectively with M phase load electric current
With T phase load electric current
Obtain electric current after the addition
With
So that I
M=I
T, I
MAnd I
TBe respectively
With
Mould, electric current
With
The voltage-phase of phase place and M phase Power Block 8 and T phase Power Block 9 be consistent, to eliminate negative phase-sequence.
Mutually in the Power Block 9, one of them is the heavy duty seat at M phase Power Block 8 and T, and another is the underloading seat.Railway power regulator 1 is transferred to the underloading seat with half of the active current difference of M phase load 10 and T phase load 11 from the heavy duty seat.
The electrified railway electric energy quality comprehensive treatment device is by detecting and control, M phase supply arm and T mutually supply arm produce the leading electric current of phase place, by with the load current addition of M phase supply arm or T phase supply arm, make M phase Power Block 8 and T mutually current effective value, the power-factor angle of Power Block 9 equate, thereby eliminate negative phase-sequence.
The maximum output current of the current transformer 3 of railway power regulator 1 is I
P max/ n calculates according to following formula:
ε is the maximum permissible value of power system voltage degree of unbalance, tri-phase unbalance factor K
I=ε, n are the number of current transformer 3, α=e
J120 °, I
PT maxBe the maximum transfer electric current of railway power regulator 1, I
+Be electric power system forward-order current, I
-Be the electric power system negative-sequence current,
With
Be respectively the three-phase current of electric power system.
The compensation of thyristor control filter 2 according to M phase Power Block 8 and T mutually the reactive current size of Power Block 9 carry out switching, thyristor control filter 2 adopts a grade compensation way, drops into different 4 ways of filter branch under different situations.
The quantity of the filter branch 4 of thyristor control filter 2 is set to 3～4.
The above only is preferred embodiment of the present invention, is not the present invention is done any pro forma restriction.Although the present invention discloses as above with preferred embodiment, yet is not to limit the present invention.Any those of ordinary skill in the art, do not breaking away from the technical solution of the present invention scope situation, all can utilize method and the technology contents of above-mentioned announcement that technical solution of the present invention is made many possible changes and modification, or be revised as the equivalent embodiment of equivalent variations.Therefore, every content that does not break away from technical solution of the present invention, any simple modification of above embodiment being done according to technical spirit of the present invention, be equal to replacements, equivalence changes and modify, all still belong in the scope that technical solution of the present invention protects.
Claims (10)
1. an electrified railway electric energy quality comprehensive treatment device control method is characterized in that, may further comprise the steps:
Secondary at single-phase multi winding transformer (5) arranges railway power regulator (1) and thyristor control filter (2);
At described railway power regulator (1) current transformer parallel with one another (3) that two above common DC lateral capacitances (7) form the back to back structure form is set, the ac output end of two current transformers (3) all is connected to mutually Power Block (8) and T Power Block (9) mutually of M by linked reactor (6) and single-phase multi winding transformer (5);
A winding at two single-phase multi winding transformers (5) secondary arranges respectively thyristor control filter (2) parallel with one another more than two groups, at described thyristor control filter (2) filter branch parallel with one another more than two groups (4) is set;
Active power between described railway power regulator (1) balance M phase Power Block (8) and the T phase Power Block (9);
Described thyristor control filter (2) compensates and the filtering harmonic wave the reactive power of its place M phase supply arm or T phase supply arm respectively.
2. a kind of electrified railway electric energy quality comprehensive treatment device control method according to claim 1 is characterized in that: by corresponding detection and control, at M phase supply arm and T supply arm generation current respectively mutually
With
Respectively with M phase load electric current
With T phase load electric current
Obtain electric current after the addition
With
So that I
M=I
T, I
MAnd I
TBe respectively
With
Mould, electric current
With
The voltage-phase of phase place and M phase Power Block (8) and T phase Power Block (9) be consistent, to eliminate negative phase-sequence.
3. a kind of electrified railway electric energy quality comprehensive treatment device control method according to claim 2, it is characterized in that: at M phase Power Block (8) and T mutually in the Power Block (9), one of them is the heavy duty seat, another is the underloading seat, and described railway power regulator (1) is transferred to the underloading seat with half of the active current difference of M phase load (10) and T phase load (11) from the heavy duty seat.
4. the described a kind of electrified railway electric energy quality comprehensive treatment device control method of arbitrary claim in 3 according to claim 1, it is characterized in that: described thyristor control filter (2) basis is the load lagging reactive power size of current of supply arm separately, provide corresponding capacitive reactive power electric current by the filter branch (4) that drops into various combination, thus the perceptual reactive current that compensating load produces.
5. a kind of electrified railway electric energy quality comprehensive treatment device control method according to claim 4 is characterized in that: described thyristor control filter (2) is set to filter branch three times, most of harmonic wave that the filtering load produces.
6. the described a kind of electrified railway electric energy quality comprehensive treatment device control method of arbitrary claim in 3,5 according to claim 1, it is characterized in that: the electrified railway electric energy quality comprehensive treatment device is by detecting and control, M phase supply arm and T mutually supply arm produce the leading electric current of phase place, by with the load current addition of M phase supply arm or T phase supply arm, make M phase Power Block (8) and T mutually current effective value, the power-factor angle of Power Block (9) equate, thereby eliminate negative phase-sequence.
7. a kind of electrified railway electric energy quality comprehensive treatment device control method according to claim 6 is characterized in that, the maximum output current of the current transformer (3) of described railway power regulator (1) is I
P max/ n calculates according to following formula:
ε is the maximum permissible value of power system voltage degree of unbalance, tri-phase unbalance factor K
I=ε, n are the number of current transformer (3), α=e
J120 °, I
PT maxBe the maximum transfer electric current of railway power regulator (1), I
+Be electric power system forward-order current, I
-Be the electric power system negative-sequence current,
With
Be respectively the Three-phase Power Systems electric current.
8. the described a kind of electrified railway electric energy quality comprehensive treatment device control method of arbitrary claim in 3,5,7 according to claim 1, it is characterized in that: described current transformer (3) adopts independent control mode, pass through detection computations, the phase angle difference of control railway power regulator (1) output current and voltage, the real component that need are compensated are assigned to mutually each current transformer (3) reference current by way of compensation of Power Block (9) of M phase Power Block (8) and T
With
The dc voltage tracking error is separately converted to mutually Power Block (9) the active current reference instruction that is added to of M phase Power Block (8) and T through PI controller output variable
With
In, obtain considering that DC voltage control is in interior reference instruction
With
9. a kind of electrified railway electric energy quality comprehensive treatment device control method according to claim 8, it is characterized in that: the compensation of described thyristor control filter (2) according to M phase Power Block (8) and T mutually the reactive current size of Power Block (9) carry out switching, thyristor control filter (2) adopts a grade compensation way, drops into different filter branch (a 4) way under different situations.
10. a kind of electrified railway electric energy quality comprehensive treatment device control method according to claim 9, it is characterized in that: the quantity of the filter branch (4) of described thyristor control filter (2) is set to 3～4.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103207323A (en) * | 2013-03-13 | 2013-07-17 | 湖北省电力公司电力科学研究院 | Method for judging inconsistent operation of three-phase parameters of large transformer bank |
| CN103683289A (en) * | 2013-12-13 | 2014-03-26 | 湖南大学 | Cophase power supply mode power quality integrated control system of LC coupling electric railway |
| CN105281336A (en) * | 2015-11-27 | 2016-01-27 | 湖南工业职业技术学院 | Novel system and method for managing electrification railway electric energy quality |
| CN104779623B (en) * | 2014-01-15 | 2017-01-25 | 河海大学 | Electric railway traction substation combined compensation system and compensation method |
| 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 |
| CN107681659A (en) * | 2017-10-17 | 2018-02-09 | 上海电力学院 | The Hysteresis control modeling method of electric railway electric energy quality comprehensive treatment device |
| CN108735463A (en) * | 2017-04-13 | 2018-11-02 | 株洲中车时代电气股份有限公司 | A kind of Scott Connection Traction Transformers |
| CN109921418A (en) * | 2019-03-26 | 2019-06-21 | 国网内蒙古东部电力有限公司 | A kind of improvement sliding-mode control of V/v tractive power supply system power quality |
| CN114362162A (en) * | 2022-01-12 | 2022-04-15 | 西南交通大学 | Railway energy route regulation and control method based on photovoltaic energy storage system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101567562A (en) * | 2009-05-31 | 2009-10-28 | 湖南大学 | Comprehensive negative sequence and harmonic compensating system of electrified high-speed railway |
| CN102738810A (en) * | 2012-07-02 | 2012-10-17 | 株洲变流技术国家工程研究中心有限公司 | Traction power supply system and method |
-
2012
- 2012-10-27 CN CN201210417779.8A patent/CN102882208B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101567562A (en) * | 2009-05-31 | 2009-10-28 | 湖南大学 | Comprehensive negative sequence and harmonic compensating system of electrified high-speed railway |
| CN102738810A (en) * | 2012-07-02 | 2012-10-17 | 株洲变流技术国家工程研究中心有限公司 | Traction power supply system and method |
Non-Patent Citations (2)
| Title |
|---|
| 王卫安 等: "基于大容量SVC的SCOTT变压器电能质量治理方案及应用", 《铁道学报》, vol. 33, no. 1, 31 January 2011 (2011-01-31), pages 31 - 38 * |
| 马伏军 等: "基于半桥结构的新型高速铁路功率调节器", 《中国电机工程学报》, vol. 31, no. 12, 25 April 2011 (2011-04-25), pages 1 - 8 * |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103207323A (en) * | 2013-03-13 | 2013-07-17 | 湖北省电力公司电力科学研究院 | Method for judging inconsistent operation of three-phase parameters of large transformer bank |
| CN103207323B (en) * | 2013-03-13 | 2015-01-07 | 湖北省电力公司电力科学研究院 | Method for judging inconsistent operation of three-phase parameters of large transformer bank |
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| CN104779623B (en) * | 2014-01-15 | 2017-01-25 | 河海大学 | Electric railway traction substation combined compensation system and compensation method |
| CN105281336A (en) * | 2015-11-27 | 2016-01-27 | 湖南工业职业技术学院 | Novel system and method for managing electrification railway electric energy quality |
| 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 |
| CN108735463A (en) * | 2017-04-13 | 2018-11-02 | 株洲中车时代电气股份有限公司 | A kind of Scott Connection Traction Transformers |
| CN107681659A (en) * | 2017-10-17 | 2018-02-09 | 上海电力学院 | The Hysteresis control modeling method of electric railway electric energy quality comprehensive treatment device |
| CN109921418A (en) * | 2019-03-26 | 2019-06-21 | 国网内蒙古东部电力有限公司 | A kind of improvement sliding-mode control of V/v tractive power supply system power quality |
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