CN102361326B - Negative-sequence governing device and method for test wire of motor train unit - Google Patents
Negative-sequence governing device and method for test wire of motor train unit Download PDFInfo
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- CN102361326B CN102361326B CN201110331904.9A CN201110331904A CN102361326B CN 102361326 B CN102361326 B CN 102361326B CN 201110331904 A CN201110331904 A CN 201110331904A CN 102361326 B CN102361326 B CN 102361326B
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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Abstract
The invention discloses a negative-sequence governing device and method for a test wire of a motor train unit. The governing device comprises an adjustable reactor, an adjustable capacitor and a control device, wherein both the adjustable reactor and the adjustable capacitor are connected with a three-phase power grid bus; the adjustable reactor is a thyristor control reactor for continuously adjusting sensitive reactive output; in the adjustable capacitor, not less than two groups of thyristor switching capacitors are connected in parallel with a thyristor control reactor; the control device is connected with the three-phase power grid bus to detect the phase current of the three-phase power grid bus; and the control device is connected with the adjustable reactor and the adjustable capacitor to control the adjustable reactor to output sensitive reactive current and control the adjustable capacitor to output capacitive reactive current. By adopting the device and the method described in the invention, the power supply quality can be ensured effectively, the negative-sequence influence is eliminated, and the power supply capability of a power system is brought into full play.
Description
Technical field
The present invention relates to power system power supply field, particularly a kind of motor train unit test wire electric power system negative sequence management devices and methods therefor.
Background technology
Along with the fast development of national high-speed railway, the demand of domestic motor train unit is increasing.For meeting quiet, the moving debugging test of motor train unit of new generation, meet the large capacity test electricity consumption needs such as national engineering laboratory's rolling rig and loop wire EMU operation test, need to set up AC traction substation.
Domestic main line high-speed railway is supplied with locomotive traction load by 220kV three phase network by transformer pressure-reducing, and the commutation that circulates between service area reduces negative phase-sequence impact, and net capacity day by day increases in addition, therefore all high-speed railways have no so far, compensating chain device is set.But as the dispatch from the factory test wire of post-installation review test of high-speed railway motor-car, adopt AC three-phase 10kV electrical network, by the Dy11 transformer single-phase 25kV voltage of output AC that boosts.Because power system capacity is relatively little, while supplying with the single-phase unbalanced load of high speed motor car, easily occur that uncompensated load one-phase overload causes higher level's transformer tripping operation fault.For guarantee test normally moves, often just take to strengthen the measure of transformer capacity.
Therefore, the current domestic technical scheme that does not also fundamentally solve motor train unit test wire negative phase-sequence problem.
Summary of the invention
The object of this invention is to provide a kind of motor train unit test wire negative sequence management devices and methods therefor, this devices and methods therefor can guarantee power supply quality effectively, eliminates negative phase-sequence impact, gives full play to the power supply capacity of electric power system.
In order to realize foregoing invention object, the present invention specifically provides a kind of technic relization scheme of motor train unit test wire negative sequence management device, a kind of motor train unit test wire negative sequence management device, comprise: Regulatable reactor, adjustable condenser and control device, Regulatable reactor is all connected with three phase network bus with adjustable condenser, Regulatable reactor adopts thyristor-controlled reactor, for regulating continuously perceptual idle output; Adjustable condenser adopts that to be no less than the thyristor switchable capacitor of two groups in parallel with thyristor-controlled reactor; Control device is connected with three phase network bus, detect in real time the phase current of three phase network bus, control device is connected with adjustable condenser with Regulatable reactor, controls Regulatable reactor and exports perceptual reactive current, and control adjustable condenser output capacitive reactive power electric current.
As the further improvement of a kind of motor train unit test wire of the present invention negative sequence management device technique scheme, Regulatable reactor comprises the first thyristor-controlled reactor that adopts thyristor-controlled reactor, the first thyristor-controlled reactor is connected between the A phase and B phase of three phase network bus, adjustable condenser comprises the second thyristor-controlled reactor that adopts thyristor-controlled reactor, adopt thyristor switchable capacitor combination and first circuit breaker of thyristor switchable capacitor, after the second thyristor-controlled reactor and thyristor switchable capacitor combination parallel connection, by the first circuit breaker, be connected between the B phase and C phase of three phase network bus, thyristor switchable capacitor combination comprises the thyristor switchable capacitor unit that is no less than two groups, parallel with one another between each thyristor switchable capacitor unit.
As the further improvement of a kind of motor train unit test wire of the present invention negative sequence management device technique scheme, the first thyristor-controlled reactor comprises the second circuit breaker, the 5th isolating switch, the 5th Controlled Reactor and a TCR valve group, series connection mutually between the second circuit breaker, the 5th isolating switch, the 5th Controlled Reactor and a TCR valve group.
As the further improvement of a kind of motor train unit test wire of the present invention negative sequence management device technique scheme, the second thyristor-controlled reactor comprises the 4th isolating switch, the 4th Controlled Reactor and the 2nd TCR valve group, series connection mutually between the 4th isolating switch, the 4th Controlled Reactor and the 2nd TCR valve group.
As the further improvement of a kind of motor train unit test wire of the present invention negative sequence management device technique scheme, thyristor switchable capacitor combination comprises three groups of thyristor switchable capacitors, by the first thyristor switchable capacitor forming including the first isolating switch, the first high-voltage capacitor, the first Controlled Reactor and a TSC valve group, series connection mutually between the first isolating switch, the first high-voltage capacitor, the first Controlled Reactor and a TSC valve group; By the second thyristor switchable capacitor forming including the second isolating switch, the second high-voltage capacitor, the second Controlled Reactor and the 2nd TSC valve group, series connection mutually between the second isolating switch, the second high-voltage capacitor, the second Controlled Reactor and the 2nd TSC valve group; By the 3rd thyristor switchable capacitor forming including the 3rd isolating switch, third high piezoelectricity container, third phase control reactor and the 3rd TSC valve group, series connection mutually between the 3rd isolating switch, third high piezoelectricity container, third phase control reactor and the 3rd TSC valve group.
As the further improvement of a kind of motor train unit test wire of the present invention negative sequence management device technique scheme, control device comprises DSP, two CPLD modules, valve group control cabinet, digital input and output modules, analog signal conditioner module, D/A converter module and protection logic module, analog signal conditioner module is connected with protection logic module with D/A converter module respectively, analog signal conditioner module is read in electric current and the voltage signal of three phase network bus, and by D/A converter module, convert digital signal to and export DSP to, two CPLD modules comprise two CPLD chips, two CPLD modules are connected with valve group control cabinet with DSP respectively, two CPLD modules form the start pulse signal of each thyristor valve group in Regulatable reactor and adjustable condenser, DSP processes the signal from digital input and output modules, and send control signal to two CPLD modules, protection logic module is connected between DSP and digital input and output modules, digital input and output modules is connected with DSP, DSP is read in the on off state of each circuit breaker and isolating switch or is sent circuit breaker and the control signal of isolating switch by digital input and output modules, when DSP judges that circuit breaker that digital input and output modules reads in and isolating switch signal break down, DSP forms the break-make of the protection each circuit breaker of logical signal control and isolating switch by protection logic module.
The present invention also provides in addition a kind of and has utilized above-mentioned motor train unit test wire negative sequence management device to carry out the technic relization scheme of the method for motor train unit test wire negative sequence management, and the method comprises the following steps:
S101: between the A of three phase network bus phase and B phase, the first thyristor-controlled reactor is set;
S102: the second thyristor-controlled reactor and thyristor switchable capacitor combination are set between the B of three phase network bus phase and C phase;
S103: control device, by detecting in real time transformer primary side A phase or C phase current, makes the hysteresis perception reactive current I of Regulatable reactor output
l=I
am=I
cm; Make the leading capacitive reactive power electric current I of adjustable condenser output
c=I
am=I
cm; Wherein, I
amfor the former avris A of traction transformer phase line current, I
cmfor the former avris C of traction transformer phase line current.
As the further improvement of a kind of motor train unit test wire of the present invention negative sequence management method technical scheme, by regulating the angle of flow of a TCR valve group in the first thyristor-controlled reactor to realize the first thyristor-controlled reactor output-current rating I
tCR1continuous adjusting, and make the output-current rating I of the first thyristor-controlled reactor
tCR1the line current I of three phase network bus A phase when reaching maximum load current
amaxequate.
As the further improvement of a kind of motor train unit test wire of the present invention negative sequence management method technical scheme, thyristor switchable capacitor array output has the reactive current of level, and by regulating the 2nd TCR valve group to make adjustable condenser export continuously adjustable capacitive reactive power electric current, respectively organize the output-current rating I of thyristor switchable capacitor
tSCequate, respectively organize the output-current rating I of thyristor switchable capacitor
tSCfor I
amaxthe output-current rating of the/3, second thyristor-controlled reactor is I
tCR2=I
tSC=I
amax/ 3.
As the further improvement of a kind of motor train unit test wire of the present invention negative sequence management method technical scheme, voltage and the current signal of the former limit of control device Real-time Collection traction transformer 10kV net side, by calculating the line current I of three phase network 10KV side A, B and C phase
am, I
bmand I
cm, make the output-current rating I of A phase and B the first thyristor-controlled reactor between mutually
tCR1=I
am, make the second thyristor-controlled reactor between B phase and C phase, the leading capacitive reactive power electric current I of thyristor switchable capacitor array output
c=I
am, thyristor switchable capacitor combination comprises three groups of thyristor switchable capacitors,
Work as I
am≤ I
tSCtime, B, one group of thyristor switchable capacitor of C phase switching, the output current I of the second thyristor-controlled reactor
tCR2=I
tSC-I
am;
Work as I
tSC< I
am≤ 2I
tSCtime, B, two groups of thyristor switchable capacitors of C phase switching, the output current I of the second thyristor-controlled reactor
tCR2=2I
tSC-I
am;
Work as 2I
tSC< I
am≤ 3I
tSCtime, B, three groups of thyristor switchable capacitors of C phase switching, the output current I of the second thyristor-controlled reactor
tCR2=3I
tSC-I
am.
By implementing the technical scheme of a kind of motor train unit test wire of the invention described above negative sequence management devices and methods therefor, can reach and effectively guarantee power supply quality, eliminate negative phase-sequence impact, give full play to the technique effect of the power supply capacity of electric power system.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the traction transformer wiring schematic diagram of a kind of embodiment of motor train unit test wire negative sequence management device of the present invention;
Fig. 2 is 10kV side electric current and voltage polar plot before a kind of embodiment compensation of motor train unit test wire negative sequence management device of the present invention;
Fig. 3 is the negative sequence compensation electrical schematic diagram of a kind of embodiment of motor train unit test wire negative sequence management device of the present invention;
Fig. 4 is 10kV side electric current and voltage polar plot after a kind of embodiment compensation of motor train unit test wire negative sequence management device of the present invention;
Fig. 5 is the circuit structure schematic diagram of a kind of embodiment of motor train unit test wire negative sequence management device of the present invention;
Fig. 6 is the control device structured flowchart of a kind of embodiment of motor train unit test wire negative sequence management device of the present invention;
Wherein, 1-Regulatable reactor, 2-adjustable condenser, 3-control device, 4-the second thyristor-controlled reactor, the combination of 5-thyristor switchable capacitor, 6-traction transformer, TCR1-the one TCR valve group, TCR2-the 2nd TCR valve group, TSC1-the one TSC valve group, TSC2-the 2nd TSC valve group, TSC3-the 3rd TSC valve group.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only a part of embodiment of the present invention, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
If accompanying drawing 1 is to as shown in accompanying drawing 6, provided a kind of motor train unit test wire of the present invention negative sequence management devices and methods therefor and be applied to the specific embodiment of motor train unit test wire electric power system, below in conjunction with the drawings and specific embodiments, the invention will be further described.
The traction transformer 6 that motor train unit test wire is used is special transformer, connection type is Δ-11/Y, its wiring schematic diagram as shown in Figure 1, the three-phase bus of the former edge joint 10KV electrical network of traction transformer 6, inferior limit output 25KV is connected to tested test load (locomotive).Traction transformer 6 is equivalent to be connected to B, C phase.For making full use of coil volume, A phase iron core does not have winding one time, and A phase iron core does not have secondary winding yet, load current I
mthe voltage, current phasor that in 10kV side, produce are as shown in Figure 2.
From accompanying drawing 2, the pass between the A of 10kV side, B, C three-phase current is:
I
Bm＝2I
Am
I
Am＝I
Cm
Visible, load current I
mmake the current three-phase of 10kV side seriously asymmetric, negative-sequence current is large, causes the accidents such as single-phase overload and tripping operation.
Therefore, as shown in Figure 3, the technical scheme employing that the specific embodiment of the invention adopts connects Regulatable reactor 1 and produces hysteresis reactive current I between A, the B of 10kV bus phase
l; Between B, C phase, connect adjustable condenser 2 and produce leading current I
c, they and single-phase traction load electric current synthesize three-phase current
resultant current is:
In figure, I
lfor the perceptual reactive current that lags behind; I
cfor leading capacitive reactive power electric current; I
bLand I
aLbe respectively between A, B phase and connect the hysteresis reactive current that the rear A phase of Regulatable reactor 1 produces mutually with B; I
cCand I
bCbe respectively the leading current that connects adjustable condenser 2 rear generations between B, C phase.
By adjusting electric capacity and reactance value, make I
l=I
c=I
am=I
cm, that is:
I
Am＝I
Cm，I
Bm＝2I
Am；
I
aL=I
bL, single spin-echo each other;
I
bC=I
cC, single spin-echo each other.
Can make three-phase synthesize electric current I
a, I
b, I
creach balanced, symmetrical:
(1) amplitude equal and opposite in direction;
(2) 120 ° of phase differences each other.
It compensates rear 10kV busbar voltage current phasor as shown in Figure 4, wherein: I
am, I
bm, I
cm, be respectively the phase current of the former limit A of traction transformer 6, B, C phase; I
amax, I
bmax, I
cmaxbe respectively the line current of three phase network bus A, B, C phase while reaching maximum load current; U
aB, U
cA, U
cAbe respectively A, B phase, the phase voltage between B, C phase and C, A phase.
The embodiment of a kind of motor train unit test wire negative sequence management device as shown in Figure 5, comprising: Regulatable reactor 1, adjustable condenser 2 and control device 3, Regulatable reactor 1 is all connected with three phase network bus with adjustable condenser 2.The three-phase bus of the former edge joint 10KV electrical network of traction transformer 6, inferior limit output 25KV is connected to tested test load (locomotive).Regulatable reactor 1 adopts thyristor-controlled reactor TCR, for regulating continuously perceptual idle output; Adjustable condenser 2 adopts that to be no less than the thyristor switchable capacitor TSC of two groups in parallel with thyristor-controlled reactor TCR, adopts TSC (thyristor switchable capacitor)+TCR (thyristor-controlled reactor) to install.Control device 3 is connected with three phase network bus, detect in real time the phase current of three phase network bus, control device 3 is connected with adjustable condenser 2 with Regulatable reactor 1, controls Regulatable reactor 1 and exports perceptual reactive current, and control adjustable condenser 2 and export capacitive reactive power electric current.
The first thyristor-controlled reactor further comprises the second circuit breaker Q F2, the 5th isolating switch QS5, the 5th Controlled Reactor L5 and a TCR valve group TCR1, series connection mutually between the second circuit breaker Q F2, the 5th isolating switch QS5, the 5th Controlled Reactor L5 and a TCR valve group TCR1; The second thyristor-controlled reactor 4 further comprises the 4th isolating switch QS4, the 4th Controlled Reactor L4 and the 2nd TCR valve group TCR2, series connection mutually between the 4th isolating switch QS4, the 4th Controlled Reactor L4 and the 2nd TCR valve group TCR2.
Thyristor switchable capacitor combination 3 further comprises three groups of thyristor switchable capacitor TSC, by the first thyristor switchable capacitor forming including the first isolating switch QS1, the first high-voltage capacitor C1, the first Controlled Reactor L1 and a TSC valve group TSC1, series connection mutually between the first isolating switch QS1, the first high-voltage capacitor C1, the first Controlled Reactor L1 and a TSC valve group TSC1; By the second thyristor switchable capacitor forming including the second isolating switch QS2, the second high-voltage capacitor C2, the second Controlled Reactor L2 and the 2nd TSC valve group TSC2, series connection mutually between the second isolating switch QS2, the second high-voltage capacitor C2, the second Controlled Reactor L2 and the 2nd TSC valve group TSC2; By the 3rd thyristor switchable capacitor forming including the 3rd isolating switch QS3, third high piezoelectricity container C 3, third phase control reactor L3 and the 3rd TSC valve group TSC3, series connection mutually between the 3rd isolating switch QS3, third high piezoelectricity container C 3, third phase control reactor L3 and the 3rd TSC valve group TSC3.
An embodiment for motor train unit test wire negative sequence management method, the method comprises the following steps:
S101: between the A of three phase network bus phase and B phase, the first thyristor-controlled reactor is set;
S102: the second thyristor-controlled reactor 4 and thyristor switchable capacitor combination 5 are set between the B of three phase network bus phase and C phase;
S103: control device 3 passes through to detect in real time transformer primary side A phase or C phase current, the hysteresis perception reactive current I that Regulatable reactor 1 is exported
l=I
am=I
cm; The leading capacitive reactive power electric current I that adjustable condenser 2 is exported
c=I
am=I
cm; Wherein, I
amfor the former limit of traction transformer three phase network 10KV side A phase line current; I
cmfor the former limit of traction transformer three phase network 10KV side C phase line current.
By regulating the angle of flow of a TCR valve group TCR1 in the first thyristor-controlled reactor, realize the first thyristor-controlled reactor output-current rating I
tCR1continuous adjusting, and make the output-current rating I of the first thyristor-controlled reactor
tCR1the line current I of three phase network bus A phase when reaching maximum load current
amaxequate.Thyristor switchable capacitor combination 5 outputs have the reactive current of level, and by regulating the 2nd TCR valve group TCR2 to make adjustable condenser 2 export continuously adjustable capacitive reactive power electric current, respectively organize the output-current rating I of thyristor switchable capacitor TSC
tSCequate, respectively organize the output-current rating I of thyristor switchable capacitor TSC
tSCfor I
amaxthe output-current rating of the/3, second thyristor-controlled reactor 4 is I
tCR2=I
tSC=I
amax/ 3.
Voltage and the current signal of the control device 3 former limit of Real-time Collection traction transformer 6 10kV net sides, by calculating the line current I of three phase network 10KV side A, B and C phase
am, I
bmand I
cm, make the output-current rating I of A phase and B the first thyristor-controlled reactor between mutually
tCR1=I
am, make the second thyristor-controlled reactor 4 between B phase and C phase, the leading capacitive reactive power electric current I of thyristor switchable capacitor combination 5 outputs
c=I
am, thyristor switchable capacitor combination 5 comprises three groups of thyristor switchable capacitor TSC;
Work as I
am≤ I
tSCtime, B, one group of thyristor switchable capacitor TSC of C phase switching, the output current I of the second thyristor-controlled reactor 4
tCR2=I
tSC-I
am;
Work as I
tSC< I
am≤ 2I
tSCtime, B, two groups of thyristor switchable capacitor TSC of C phase switching, the output current I of the second thyristor-controlled reactor 4
tCR2=2I
tSC-I
am;
Work as 2I
tSC< I
am≤ 3I
tSCtime, B, three groups of thyristor switchable capacitor TSC of C phase switching, the output current I of the second thyristor-controlled reactor 4
tCR2=3I
tSC-I
am.
The above, be only preferred embodiment of the present invention, not the present invention done to any pro forma restriction.Although the present invention discloses as above with preferred embodiment, but not in order to limit the present invention.Any those of ordinary skill in the art, do not departing from technical solution of the present invention scope situation, all can utilize method and the technology contents of above-mentioned announcement to make many possible variations and modification to technical solution of the present invention, or be revised as the equivalent embodiment of equivalent variations.Therefore, every content that does not depart from technical solution of the present invention, according to technical spirit of the present invention to any simple modification made for any of the above embodiments, be equal to replacements, equivalence change and modify, all still belong to technical solution of the present invention protect scope in.
Claims (10)
1. a motor train unit test wire negative sequence management device, it is characterized in that, comprise: Regulatable reactor (1), adjustable condenser (2) and control device (3), described Regulatable reactor (1) is connected between the A phase and B phase of three phase network bus, described adjustable condenser (2) is connected between three phase network bus B phase and C phase, described Regulatable reactor (1) adopts thyristor-controlled reactor (TCR), for regulating continuously perceptual idle output; Described adjustable condenser (2) adopts that to be no less than the thyristor switchable capacitor (TSC) of two groups in parallel with thyristor-controlled reactor (TCR); Described control device (3) is connected with three phase network bus, detects in real time the phase current of three phase network bus; Described control device (3) is also connected with adjustable condenser (2) with Regulatable reactor (1); The former limit of traction transformer (6) is connected to three phase network bus, and the inferior limit of traction transformer (6) is connected to tested test load, and described control device (3) detects described traction transformer (6) former limit A phase or C phase current in real time; Described control device (3) is controlled the hysteresis perception reactive current I of described Regulatable reactor (1) output
l=I
am=I
cm, and control the leading capacitive reactive power electric current I that described adjustable condenser (2) is exported
c=I
am=I
cm; Wherein, I
amfor the former avris A of traction transformer (6) phase line current, I
cmfor the former avris C of traction transformer (6) phase line current.
2. a kind of motor train unit test wire negative sequence management device according to claim 1, it is characterized in that: described Regulatable reactor (1) comprises the first thyristor-controlled reactor that adopts thyristor-controlled reactor (TCR), the first thyristor-controlled reactor is connected between the A phase and B phase of three phase network bus, described adjustable condenser (2) comprises the second thyristor-controlled reactor (4) that adopts thyristor-controlled reactor (TCR), adopt thyristor switchable capacitor combination (5) and first circuit breaker (QF1) of thyristor switchable capacitor (TSC), after the second thyristor-controlled reactor (4) and thyristor switchable capacitor combination (5) parallel connection, by the first circuit breaker (QF1), be connected between the B phase and C phase of three phase network bus, thyristor switchable capacitor combination (5) comprises the thyristor switchable capacitor (TSC) that is no less than two groups, parallel with one another between each group thyristor switchable capacitor (TSC).
3. a kind of motor train unit test wire negative sequence management device according to claim 2, it is characterized in that: the first described thyristor-controlled reactor comprises the second circuit breaker (QF2), the 5th isolating switch (QS5), the 5th Controlled Reactor (L5) and a TCR valve group (TCR1) series connection mutually between the second circuit breaker (QF2), the 5th isolating switch (QS5), the 5th Controlled Reactor (L5) and a TCR valve group (TCR1).
4. according to a kind of motor train unit test wire negative sequence management device described in claim 2 or 3, it is characterized in that: described the second thyristor-controlled reactor (4) comprises the 4th isolating switch (QS4), the 4th Controlled Reactor (L4) and the 2nd TCR valve group (TCR2) series connection mutually between the 4th isolating switch (QS4), the 4th Controlled Reactor (L4) and the 2nd TCR valve group (TCR2).
5. a kind of motor train unit test wire negative sequence management device according to claim 4, it is characterized in that: described thyristor switchable capacitor combination (5) comprises three groups of thyristor switchable capacitors (TSC), by the first thyristor switchable capacitor forming including the first isolating switch (QS1), the first high-voltage capacitor (C1), the first Controlled Reactor (L1) and a TSC valve group (TSC1), series connection mutually between the first isolating switch (QS1), the first high-voltage capacitor (C1), the first Controlled Reactor (L1) and a TSC valve group (TSC1); By the second thyristor switchable capacitor forming including the second isolating switch (QS2), the second high-voltage capacitor (C2), the second Controlled Reactor (L2) and the 2nd TSC valve group (TSC2), series connection mutually between the second isolating switch (QS2), the second high-voltage capacitor (C2), the second Controlled Reactor (L2) and the 2nd TSC valve group (TSC2); By the 3rd thyristor switchable capacitor forming including the 3rd isolating switch (QS3), third high piezoelectricity container (C3), third phase control reactor (L3) and the 3rd TSC valve group (TSC3), series connection mutually between the 3rd isolating switch (QS3), third high piezoelectricity container (C3), third phase control reactor (L3) and the 3rd TSC valve group (TSC3).
6. according to claim 1, 2, 3, a kind of motor train unit test wire negative sequence management device in 5 described in arbitrary claim, it is characterized in that: described control device (3) comprises DSP(7), two CPLD modules (8), valve group control cabinet (9), digital input and output modules (10), analog signal conditioner module (11), D/A converter module (12) and protection logic module (13), analog signal conditioner module (11) is connected with protection logic module (13) with D/A converter module (12) respectively, analog signal conditioner module (11) is read in electric current and the voltage signal of three phase network bus, and by D/A converter module (12), convert digital signal to and export DSP(7 to), two CPLD modules (8) comprise two CPLD chips, two CPLD modules (8) respectively with DSP(7) be connected with valve group control cabinet (9), two CPLD modules (8) form the start pulse signal of each thyristor valve group in Regulatable reactor (1) and adjustable condenser (2), DSP(7) to processing from the signal of digital input and output modules (10), and send control signal to two CPLD modules (8), protection logic module (13) be connected to DSP(7) and digital input and output modules (10) between, digital input and output modules (10) and DSP(7) be connected, DSP(7) by digital input and output modules (10), read in the on off state of each circuit breaker and isolating switch or send circuit breaker and the control signal of isolating switch, as DSP(7) judge when circuit breaker that digital input and output modules (10) reads in and isolating switch signal break down, DSP(7) by protection logic module (13), form the break-make of protecting the each circuit breaker of logical signal control and isolating switch.
7. utilize the motor train unit test wire negative sequence management device described in arbitrary claim in claim 1,2,3,5 to carry out a method for motor train unit test wire negative sequence management, it is characterized in that: described method comprises the following steps:
S101: between the A of three phase network bus phase and B phase, the first thyristor-controlled reactor is set;
S102: between the B of three phase network bus phase and C phase, the second thyristor-controlled reactor (4) and thyristor switchable capacitor combination (5) are set;
S103: control device (3), by detecting in real time traction transformer (6) former limit A phase or C phase current, makes the hysteresis perception reactive current I of Regulatable reactor (1) output
l=I
am=I
cm; Make the leading capacitive reactive power electric current I of adjustable condenser (2) output
c=I
am=I
cm; Wherein, I
amfor the former avris A of traction transformer (6) phase line current, I
cmfor the former avris C of traction transformer (6) phase line current.
8. a kind of motor train unit test wire negative sequence management method according to claim 7, is characterized in that: by regulating the angle of flow of a TCR valve group (TCR1) in described the first thyristor-controlled reactor to realize the first thyristor-controlled reactor output-current rating I
tCR1continuous adjusting, and make the output-current rating I of the first thyristor-controlled reactor
tCR1the line current I of three phase network bus A phase when reaching maximum load current
amaxequate.
9. a kind of motor train unit test wire negative sequence management method according to claim 8, it is characterized in that: described thyristor switchable capacitor combination (5) output has the reactive current of level, and by regulating the 2nd TCR valve group (TCR2) to make adjustable condenser (2) export continuously adjustable capacitive reactive power electric current, respectively organize the output-current rating I of thyristor switchable capacitor (TSC)
tSCequate, respectively organize the output-current rating I of thyristor switchable capacitor (TSC)
tSCfor I
amaxthe output-current rating of the/3, second thyristor-controlled reactor (4) is I
tCR2=I
tSC=I
amax/ 3.
10. a kind of motor train unit test wire negative sequence management method according to claim 9, it is characterized in that: voltage and the current signal of the former limit of described control device (3) Real-time Collection traction transformer (6) 10kV net side, by calculating the line current I of the former avris A of traction transformer, B and C phase
am, I
bmand I
cm, make the output-current rating I of A phase and B the first thyristor-controlled reactor between mutually
tCR1=I
am, make the second thyristor-controlled reactor (4) between B phase and C phase, the leading capacitive reactive power electric current I of thyristor switchable capacitor combination (5) array output
c=I
am, thyristor switchable capacitor combination (5) comprises three groups of thyristor switchable capacitors (TSC);
Work as I
am≤ I
tSCtime, B, one group of thyristor switchable capacitor of C phase switching (TSC), the output current I of the second thyristor-controlled reactor (4)
tCR2=I
tSC-I
am;
Work as I
tSC< I
am≤ 2I
tSCtime, B, two groups of thyristor switchable capacitors of C phase switching (TSC), the output current I of the second thyristor-controlled reactor (4)
tCR2=2I
tSC-I
am;
Work as 2I
tSC< I
am≤ 3I
tSCtime, B, three groups of thyristor switchable capacitors of C phase switching (TSC), the output current I of the second thyristor-controlled reactor (4)
tCR2=3I
tSC-I
am.
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| CN103236689A (en) * | 2013-04-10 | 2013-08-07 | 安徽节源节能科技有限公司 | Power quality diagnosis and management simulating device |
| CN106208112B (en) * | 2016-08-24 | 2020-08-07 | 株洲变流技术国家工程研究中心有限公司 | Electric locomotive test wire balance power supply system |
| US10985668B2 (en) * | 2017-06-21 | 2021-04-20 | Abb Power Grids Switzerland Ag | Model based current control of a three-to-single-phase power converter |
| CN109633323B (en) * | 2018-12-24 | 2021-03-26 | 杭州银湖电气设备有限公司 | Adjustable reactor load test system |
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