CN104934974A - Controllable phase shifter with short-circuit current limiting function - Google Patents
Controllable phase shifter with short-circuit current limiting function Download PDFInfo
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- CN104934974A CN104934974A CN201510379446.4A CN201510379446A CN104934974A CN 104934974 A CN104934974 A CN 104934974A CN 201510379446 A CN201510379446 A CN 201510379446A CN 104934974 A CN104934974 A CN 104934974A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
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Abstract
The invention provides a controllable phase shifter with a short-circuit current limiting function. The controllable phase shifter comprises an exciting transformer, a booster transformer and a thyristor voltage regulator circuit; the low-voltage end of a primary side winding in the booster transformer is the input end of the controllable phase shifter while the high-voltage end of the primary side winding in the booster transformer is the output end of the controllable phase shifter; the primary side winding consists of two winding sections connected in series; a secondary side winding of the exciting transformer consists of three winding sections connected in series; and the input end of the thyristor voltage regulator circuit is connected with the secondary side winding of the exciting transformer while the output end of the thyristor voltage regulator circuit is connected with the high-voltage end of the primary side winding of the booster transformer. Compared to the prior art, the controllable phase shifter with the short-circuit current limiting function provided by the invention can rapidly change phase angles and limit short-circuit current, and achieves an important protective effect on safe operation of power grids in malfunction states.
Description
Technical field
The present invention relates to current system transmission of electricity control field, be specifically related to a kind of controllable phase shifter with short circuit current limitation function.
Background technology
Phase shifter (phase shift transformer, PST) phase-angle regulator (phase angle regulator is also claimed, PAR), it is a kind of effective means controlling transmission of electricity trend, by sealing in horizontal or longitudinal voltage in transmission line, the phase place of modifier mounting points voltage or amplitude, thus control transmission line steady-state load flow or voltage, realize reasonable distribution circuit transmission power, improve key sections conveying capacity, reduce the effects such as Transmission Cost.Early stage PST all adopts mechanical voltage regulating mode, with the fast development of power electronic technology, has occurred the controllable phase shifter (thyristor contolled phase shifttransformer, TCPST) adopting thyristor voltage regulation mode.Controllable phase shifter based on thyristor voltage regulation has following advantage:
1.: thyristor can continuously, frequent movement, and the regular maintenance expense of mechanical voltage adjusting device costliness can be exempted;
2.: thyristor voltage regulation speed is more faster than mechanical pressure regulation, the quick control overflow of electric power system can be met.
Therefore, need to provide a kind of controllable phase shifter with short circuit current limitation function, be used for the problem for the treatment of system transient state and dynamic aspect, as improved transient stability, alleviate cause interconnection step-out pass through trend, suppress fault after line power uprush the switch overload, damped oscillation etc. that cause.
Summary of the invention
In order to meet the needs of prior art, the invention provides a kind of controllable phase shifter with short circuit current limitation function.
Technical scheme of the present invention is:
Preferably, described controllable phase shifter comprises excitation transformer, booster transformer and thyristor voltage regulation circuit;
In described booster transformer, the low-pressure end of first side winding is the input of controllable phase shifter, and high-pressure side is the output of controllable phase shifter; Described first side winding is made up of two sections of windings in series, and the tie point of described two sections of windings is provided with centre tap, and described centre tap is connected with the high-pressure side of first side winding in excitation transformer; The secondary side winding of described excitation transformer is made up of three sections of windings in series;
The described input of thyristor voltage regulation circuit is connected with the secondary side winding of excitation transformer, and output is connected with the high-pressure side of first side winding in booster transformer.
Preferably, the first side winding of described excitation transformer and secondary side winding are Y
0connect; The secondary side winding of described booster transformer is that Δ connects;
Preferably, the first side winding of described excitation transformer is that Δ connects, and secondary side winding is Y
0connect; The secondary side winding of described booster transformer is Y
0connect or Y connection;
Preferably, the first side winding of described excitation transformer comprises A phase winding, B phase winding and C phase winding, and the centre tap of described booster transformer comprises A phase centre tap, B phase centre tap and C phase centre tap; In excitation transformer, in first side winding and booster transformer, the connected mode of first side winding comprises:
The high-pressure side of described A phase winding is connected with A phase centre tap;
The high-pressure side of described B phase winding is connected with B phase centre tap;
The high-pressure side of described C phase winding is connected with C phase centre tap;
Preferably, described thyristor voltage regulation circuit comprises the first thyristor voltage regulation circuit, the second thyristor voltage regulation circuit and the 3rd thyristor voltage regulation circuit;
The input of described first thyristor voltage regulation circuit is connected with the A phase winding of secondary side winding in described excitation transformer, and output is connected with the C phase winding of secondary side winding in described booster transformer;
The input of described second thyristor voltage regulation circuit is connected with the B phase winding of secondary side winding in described excitation transformer, and output is connected with the A phase winding of secondary side winding in described booster transformer;
The input of described 3rd thyristor voltage regulation circuit is connected with the C phase winding of secondary side winding in described excitation transformer, and output is connected with the B phase winding of secondary side winding in described booster transformer;
Preferably, described first thyristor voltage regulation circuit, the second thyristor voltage regulation circuit and the 3rd thyristor voltage regulation circuit include the first full-bridge circuit, the second full-bridge circuit and the 3rd full-bridge circuit of connecting successively;
The input of described first full-bridge circuit is connected to the two ends of the first paragraph winding of secondary side winding in described excitation transformer;
The input of described second full-bridge circuit is connected to the two ends of the second segment winding of secondary side winding in described excitation transformer;
The input of described 3rd full-bridge circuit is connected to the two ends of the 3rd section of winding of secondary side winding in described excitation transformer;
Preferably, each brachium pontis of described first full-bridge circuit is made up of a Thyristors in series, each brachium pontis of described second full-bridge circuit is made up of b Thyristors in series, and each brachium pontis of described 3rd full-bridge circuit is made up of c Thyristors in series, a:b:c=1:3:9;
The ratio of the umber of turn n3 of the umber of turn n1 of described first paragraph winding, the umber of turn n2 of second segment winding and the 3rd section winding is n1:n2:n3=1:3:9;
Preferably, in described excitation transformer, the operating state of secondary side winding comprises 27 operating states;
The operating state of described first paragraph winding comprises the secondary side winding that forward seals in booster transformer, oppositely seals in the secondary side winding of booster transformer and does not seal in the secondary side winding of booster transformer;
The operating state of described second segment winding comprises the secondary side winding that forward seals in booster transformer, oppositely seals in the secondary side winding of booster transformer and does not seal in the secondary side winding of booster transformer;
The operating state of described 3rd section of winding comprises the secondary side winding that forward seals in booster transformer, oppositely seals in the secondary side winding of booster transformer and does not seal in the secondary side winding of booster transformer.
Compared with immediate prior art, excellent effect of the present invention is:
1, a kind of controllable phase shifter with short circuit current limitation function provided by the invention, the operational mode of existing AC network can be improved, improve the conveying capacity of existing rack key sections, alleviate load center area project of transmitting and converting electricity and build pressure, can also control voltage while playing balanced electric network swim, elevator system stability, for the relevant issues that power distribution network exists can also be solved in power distribution network, to lifting electric network transportation ability, improve system controllability and measurability, promote power distribution network power supply quality, be of great importance;
2, a kind of controllable phase shifter with short circuit current limitation function provided by the invention, can change phase angle, limiting short-circuit current fast, plays important protective effect to the safe operation of electrical network under fault case;
3, a kind of controllable phase shifter with short circuit current limitation function provided by the invention, thyristor control circuit is adopted to replace load tap changer, namely thyristor control phase shifter is formed: on the one hand, thyristor can continuously, frequent movement, and the regular maintenance expense of mechanical voltage adjusting device costliness can be exempted; On the other hand, thyristor voltage regulation speed is more faster than mechanical pressure regulation, can meet the quick control overflow of electric power system;
4, a kind of controllable phase shifter with short circuit current limitation function provided by the invention, can be used to the problem for the treatment of system transient state and dynamic aspect, as improved transient stability, alleviate cause interconnection step-out pass through trend, suppress line power after fault to be uprushed the switch overload, damped oscillation etc. that cause.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further described.
Fig. 1: the schematic diagram of controllable phase shifter access transmission system in the embodiment of the present invention;
Fig. 2: the angle relationship schematic diagram in the embodiment of the present invention after controllable phase shifter access transmission system;
Fig. 3: the controllable phase shifter topology diagram in the embodiment of the present invention with short circuit current limitation function;
Fig. 4: thyristor voltage regulation circuit diagram in the embodiment of the present invention;
Fig. 5: the former secondary voltage phasor relation schematic diagram of excitation transformer in the embodiment of the present invention;
Fig. 6: the input and output voltage phasor relation of controllable phase shifter in the embodiment of the present invention.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.
A kind of controllable phase shifter with short circuit current limitation function provided by the invention, both the active power that transmission line transmits can be regulated, have and can limit the short circuit current of transmission line, when transmission system is short-circuited fault, action can change phase angle rapidly, reach the effect of limiting short-circuit current.
In transmission system, the active power of circuit conveying is:
Wherein, the phase angle difference that δ is sending end S shown in Fig. 1 and receiving end L voltage, σ is U after phase shifter phase shift
slwith U
sphase angle difference, U
sfor sending end voltage, U
lfor terminal voltage, U
slfor voltage after phase shift, X
sLfor line impedance.Can find out that the change of σ significantly can affect the active power of line transmission by formula (1).
Control phase shifter, by controlling to injecting voltage Δ U in circuit, makes phase shifter both sides voltage phase angle change, thus changes the phase angle difference of transmission line first and last end, reaches the object of load disturbance.Its angle relationship as shown in Figure 2.
In the present invention, the embodiment of controllable phase shifter as shown in Figure 3, is specially:
This controllable phase shifter comprises excitation transformer (Excitation Transformer, ET), booster transformer (BoosterTransformer, BT) and thyristor voltage regulation circuit.Wherein,
1, booster transformer
(1) first side winding of booster transformer
The low-pressure end of this first side winding is the input of controllable phase shifter, and high-pressure side is the output of controllable phase shifter;
First side winding is made up of two sections of windings in series, and the tie point of two sections of windings is provided with centre tap, and centre tap is connected with the high-pressure side of first side winding in excitation transformer; This centre tap comprises A phase centre tap, B phase centre tap and C phase centre tap.
As shown in Figure 3, the A phase winding of first side winding comprises winding B1a and the winding B2a of series connection, the A phase centre tap that the two link is arranged is connected with the high-pressure side of first side winding E1a in excitation transformer, the other end of winding B1a is the input SA of controllable phase shifter, and the other end of winding B2a is the output LA of controllable phase shifter;
The B phase winding of first side winding comprises winding B1b and the winding B2b of series connection, the B phase centre tap that the two link is arranged is connected with the high-pressure side of first side winding E1b in excitation transformer, the other end of winding B1b is the input SB of controllable phase shifter, and the other end of winding B2b is the output LB of controllable phase shifter;
The C phase winding of first side winding comprises winding B1c and the winding B2c of series connection, the C phase centre tap that the two link is arranged is connected with the high-pressure side of first side winding E1c in excitation transformer, the other end of winding B1c is the input SC of controllable phase shifter, and the other end of winding B2c is the output LC of controllable phase shifter.
The electromotive force in first side winding, two sections of windings responded to is equal, namely
wherein:
The winding no-load voltage ratio n of booster transformer
bfor:
n
B＝N
B3/N
B1＝N
B3/N
B2(2)
Wherein, N
b1for the number of turn of booster transformer primary side one section of winding, N
b2for the number of turn of booster transformer primary side another section of winding, N
b3for the number of turn of booster transformer secondary side winding.
The winding no-load voltage ratio n of excitation transformer
tfor:
n
T＝(N
E1/TN
T)＝(U
E1/U
T) (3)
Wherein, T=± 1, ± 2 ... ± 3, N
e1for excitation transformer former limit umber of turn, N
tfor the umber of turn that excitation transformer secondary unit level potential difference is corresponding, U
e1for excitation becomes the voltage of first side winding, U
tfor excitation becomes secondary side equivalence output voltage.
If the former secondary of excitation transformer is star-star connection, three-phase voltage phasor as shown in Figure 4, wherein,
for excitation becomes the voltage phasor of first side winding,
for excitation becomes secondary side equivalence output voltage phasor.
With phasor position reference in Fig. 4, in conjunction with the no-load voltage ratio of excitation transformer, phase shifter input and output voltage phasor relation can be obtained as shown in Figure 5, wherein,
for phase shifter input side voltage phasor;
for phase shifter outlet side voltage phasor;
for the centre tap point of booster transformer and the voltage phasor of excitation transformer first side winding junction;
for the voltage phasor on booster transformer primary side sectional wind; φ is phase shifter phase shift angle.
Phase shifting angle φ can be obtained thus and meet following relation:
The "T"-shaped equivalent circuit containing ideal transformer is adopted to analyze, the voltage relationship of phase shifter sending end S and receiving end L:
Wherein, equivalent impedance
Z
e1for excitation transformer primary side equiva lent impedance, Z
tfor excitation transformer secondary side equiva lent impedance, Z
b1for the equiva lent impedance of booster transformer primary side one section of winding, Z
b3for booster transformer secondary side equiva lent impedance.
When taking into account each winding leakage reactance of phase shifter, phase shifter can be equivalent to a desirable phase shifter and an impedance is in series, as shown in Figure 1, and wherein X
sLfor line impedance,
for the voltage phasor of controllable phase shifter outlet side.Therefore, under circuit is short-circuited situation, thyristor can action rapidly, changes phase angle, utilizes Z
eqand X
sLlimiting short-circuit current effectively.
Although the leakage reactance of phase shifter body and loss will produce considerable influence to transmission system in the present embodiment, the phase shift angle of phase shifter can the pressure drop of poor efficiency leakage reactance and loss, compared with input voltage output voltage only phase angle change, amplitude is constant.
(2) secondary side winding of booster transformer
As shown in Figure 3, this secondary side winding comprises winding B3a, winding B3b and winding B3c.
2, excitation transformer
(1) first side winding of excitation transformer
This first side winding comprises A phase winding, B phase winding and C phase winding.
The first side winding of the excitation transformer of booster transformer and the connected mode of booster transformer first side winding comprise:
The high-pressure side of A phase winding is connected with A phase centre tap; The high-pressure side of B phase winding is connected with B phase centre tap; The high-pressure side of C phase winding is connected with C phase centre tap.
As shown in Figure 3, A phase winding is winding E1a, B phase winding be winding E1b, C phase winding is winding E1c.
(2) secondary side winding of excitation transformer
This secondary side winding is made up of three sections of windings in series.
As shown in Figure 3, the A phase winding of secondary side winding is composed in series successively by first paragraph winding E2a, second segment winding E3a and the 3rd section of winding E4a, the B phase winding of secondary side winding is composed in series successively by first paragraph winding E2b, second segment winding E3b and the 3rd section of winding E4b, and the C phase winding of secondary side winding is composed in series successively by first paragraph winding E2c, second segment winding E3c and the 3rd section of winding E4c.
3, thyristor voltage regulation circuit
The input of this circuit is connected with the secondary side winding of excitation transformer, and output is connected with the high-pressure side of first side winding in booster transformer.Thyristor voltage regulation circuit comprises the first thyristor voltage regulation circuit, the second thyristor voltage regulation circuit and the 3rd thyristor voltage regulation circuit, wherein:
1.: the input of the first thyristor voltage regulation circuit is connected with the A phase winding of secondary side winding in excitation transformer, output is connected with the C phase winding of secondary side winding in booster transformer.As shown in Figure 3, input is connected with first paragraph winding E2a, second segment winding E3a and the 3rd section of winding E4a respectively, and output is connected with winding B3c.
2.: the input of the second thyristor voltage regulation circuit is connected with the B phase winding of secondary side winding in excitation transformer, output is connected with the A phase winding of secondary side winding in booster transformer.As shown in Figure 3, input is connected with first paragraph winding E2b, second segment winding E3b and the 3rd section of winding E4b respectively, and output is connected with winding B3a.
3.: the input of the 3rd thyristor voltage regulation circuit is connected with the C phase winding of secondary side winding in excitation transformer, output is connected with the B phase winding of secondary side winding in booster transformer.As shown in Figure 3, input is connected with first paragraph winding E2c, second segment winding E3c and the 3rd section of winding E4c respectively, and output is connected with winding B3b.
Above-mentioned first thyristor voltage regulation circuit, the second thyristor voltage regulation circuit and the 3rd thyristor voltage regulation circuit include the first full-bridge circuit, the second full-bridge circuit and the 3rd full-bridge circuit of connecting successively, wherein:
1.: the input of the first full-bridge circuit is connected to the two ends of the first paragraph winding of secondary side winding in excitation transformer, each brachium pontis of the first full-bridge circuit is made up of a Thyristors in series.
A=1 in the present embodiment, the first full-bridge circuit comprises brachium pontis 1, brachium pontis 2, brachium pontis 3 and brachium pontis 4 as shown in Figure 3.
2.: the input of the second full-bridge circuit is connected to the two ends of the second segment winding of secondary side winding in excitation transformer, each brachium pontis of the second full-bridge circuit is made up of b Thyristors in series.
A=3 in the present embodiment, the second full-bridge circuit comprises brachium pontis 5, brachium pontis 6, brachium pontis 7 and brachium pontis 8 as shown in Figure 3.
3.: the input of the 3rd full-bridge circuit is connected to the two ends of the 3rd section of winding of secondary side winding in excitation transformer, each brachium pontis of the 3rd full-bridge circuit is made up of c Thyristors in series.
A=9 in the present embodiment, the 3rd full-bridge circuit comprises brachium pontis 9, brachium pontis 10, brachium pontis 11 and brachium pontis 12 as shown in Figure 3.
The ratio of the umber of turn n3 of a:b:c=1:3:9 in the present embodiment, the umber of turn n1 of first paragraph winding, the umber of turn n2 of second segment winding and the 3rd section winding is n1:n2:n3=1:3:9.
In the present embodiment, in excitation transformer, the operating state of secondary side winding comprises 27 operating states, and wherein the operating state of each section of winding is:
1.: the operating state of first paragraph winding, comprise the secondary side winding that forward seals in booster transformer, oppositely seal in the secondary side winding of booster transformer and do not seal in the secondary side winding of booster transformer.
As shown in Figure 3, when brachium pontis 1 and brachium pontis 4 conducting, during other cut-offs, E2 winding forward seals in winding B3c; When brachium pontis 2 and brachium pontis 3 conducting, during other cut-offs, E2 winding oppositely seals in winding B3c; When brachium pontis 1 and brachium pontis 2 conducting, during other cut-offs, E2 winding does not seal in winding B3c; When brachium pontis 3 and brachium pontis 4 conducting, during other cut-offs, E2 winding does not seal in winding B3c.
2.: the operating state of second segment winding, comprise the secondary side winding that forward seals in booster transformer, oppositely seal in the secondary side winding of booster transformer and do not seal in the secondary side winding of booster transformer.
3.: the operating state of the 3rd section of winding, comprise the secondary side winding that forward seals in booster transformer, oppositely seal in the secondary side winding of booster transformer and do not seal in the secondary side winding of booster transformer.
In the present embodiment, the connected mode of excitation transformer and booster transformer mainly comprises:
1.: first side winding and the secondary side winding of excitation transformer are Y
0connect, and the secondary side winding of booster transformer is that Δ connects.
2.: the first side winding of excitation transformer is that Δ connects, and secondary side winding is Y
0connect, and the secondary side winding of booster transformer is Y
0connect.
3.: the first side winding of excitation transformer is that Δ connects, and secondary side winding is Y
0connect, and the secondary side winding of booster transformer is that Y connects.
Finally should be noted that: described embodiment is only some embodiments of the present application, instead of whole embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the application's protection.
Claims (8)
1. have a controllable phase shifter for short circuit current limitation function, it is characterized in that, described controllable phase shifter comprises excitation transformer, booster transformer and thyristor voltage regulation circuit;
In described booster transformer, the low-pressure end of first side winding is the input of controllable phase shifter, and high-pressure side is the output of controllable phase shifter; Described first side winding is made up of two sections of windings in series, and the tie point of described two sections of windings is provided with centre tap, and described centre tap is connected with the high-pressure side of first side winding in excitation transformer; The secondary side winding of described excitation transformer is made up of three sections of windings in series;
The described input of thyristor voltage regulation circuit is connected with the secondary side winding of excitation transformer, and output is connected with the high-pressure side of first side winding in booster transformer.
2. controllable phase shifter as claimed in claim 1, it is characterized in that, first side winding and the secondary side winding of described excitation transformer are Y
0connect; The secondary side winding of described booster transformer is that Δ connects.
3. controllable phase shifter as claimed in claim 1, is characterized in that, the first side winding of described excitation transformer is that Δ connects, and secondary side winding is Y
0connect; The secondary side winding of described booster transformer is Y
0connect or Y connection.
4. controllable phase shifter as claimed in claim 1, it is characterized in that, the first side winding of described excitation transformer comprises A phase winding, B phase winding and C phase winding, and the centre tap of described booster transformer comprises A phase centre tap, B phase centre tap and C phase centre tap; In excitation transformer, in first side winding and booster transformer, the connected mode of first side winding comprises:
The high-pressure side of described A phase winding is connected with A phase centre tap;
The high-pressure side of described B phase winding is connected with B phase centre tap;
The high-pressure side of described C phase winding is connected with C phase centre tap.
5. controllable phase shifter as claimed in claim 1, it is characterized in that, described thyristor voltage regulation circuit comprises the first thyristor voltage regulation circuit, the second thyristor voltage regulation circuit and the 3rd thyristor voltage regulation circuit;
The input of described first thyristor voltage regulation circuit is connected with the A phase winding of secondary side winding in described excitation transformer, and output is connected with the C phase winding of secondary side winding in described booster transformer;
The input of described second thyristor voltage regulation circuit is connected with the B phase winding of secondary side winding in described excitation transformer, and output is connected with the A phase winding of secondary side winding in described booster transformer;
The input of described 3rd thyristor voltage regulation circuit is connected with the C phase winding of secondary side winding in described excitation transformer, and output is connected with the B phase winding of secondary side winding in described booster transformer.
6. controllable phase shifter as claimed in claim 5, it is characterized in that, described first thyristor voltage regulation circuit, the second thyristor voltage regulation circuit and the 3rd thyristor voltage regulation circuit include the first full-bridge circuit, the second full-bridge circuit and the 3rd full-bridge circuit of connecting successively;
The input of described first full-bridge circuit is connected to the two ends of the first paragraph winding of secondary side winding in described excitation transformer;
The input of described second full-bridge circuit is connected to the two ends of the second segment winding of secondary side winding in described excitation transformer;
The input of described 3rd full-bridge circuit is connected to the two ends of the 3rd section of winding of secondary side winding in described excitation transformer.
7. controllable phase shifter as claimed in claim 6, it is characterized in that, each brachium pontis of described first full-bridge circuit is made up of a Thyristors in series, each brachium pontis of described second full-bridge circuit is made up of b Thyristors in series, each brachium pontis of described 3rd full-bridge circuit is made up of c Thyristors in series, a:b:c=1:3:9;
The ratio of the umber of turn n3 of the umber of turn n1 of described first paragraph winding, the umber of turn n2 of second segment winding and the 3rd section winding is n1:n2:n3=1:3:9.
8. controllable phase shifter as claimed in claim 6, it is characterized in that, in described excitation transformer, the operating state of secondary side winding comprises 27 operating states;
The operating state of described first paragraph winding comprises the secondary side winding that forward seals in booster transformer, oppositely seals in the secondary side winding of booster transformer and does not seal in the secondary side winding of booster transformer;
The operating state of described second segment winding comprises the secondary side winding that forward seals in booster transformer, oppositely seals in the secondary side winding of booster transformer and does not seal in the secondary side winding of booster transformer;
The operating state of described 3rd section of winding comprises the secondary side winding that forward seals in booster transformer, oppositely seals in the secondary side winding of booster transformer and does not seal in the secondary side winding of booster transformer.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510379446.4A CN104934974A (en) | 2015-07-01 | 2015-07-01 | Controllable phase shifter with short-circuit current limiting function |
| PCT/CN2016/084271 WO2017000735A1 (en) | 2015-07-01 | 2016-06-01 | Controlled phase shift transmitter with short-circuit current limiting function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510379446.4A CN104934974A (en) | 2015-07-01 | 2015-07-01 | Controllable phase shifter with short-circuit current limiting function |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2017000735A1 (en) * | 2015-07-01 | 2017-01-05 | 全球能源互联网研究院 | Controlled phase shift transmitter with short-circuit current limiting function |
| CN109038606A (en) * | 2018-08-08 | 2018-12-18 | 全球能源互联网研究院有限公司 | A kind of on-load regulator transformer and Unified Power Flow control system |
| CN112242702A (en) * | 2019-07-19 | 2021-01-19 | 国网江苏省电力有限公司 | Controllable phase shifter and control method thereof |
| CN114121449A (en) * | 2021-11-25 | 2022-03-01 | 云南电网有限责任公司电力科学研究院 | Phase-shifting transformer |
| WO2024051869A1 (en) * | 2022-09-08 | 2024-03-14 | 国网智能电网研究院有限公司 | Three-phase voltage impedance adjustable transformer and control method and control apparatus therefor, computer device, storage medium and computer program product |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2017000735A1 (en) * | 2015-07-01 | 2017-01-05 | 全球能源互联网研究院 | Controlled phase shift transmitter with short-circuit current limiting function |
| CN109038606A (en) * | 2018-08-08 | 2018-12-18 | 全球能源互联网研究院有限公司 | A kind of on-load regulator transformer and Unified Power Flow control system |
| CN109038606B (en) * | 2018-08-08 | 2024-04-02 | 全球能源互联网研究院有限公司 | On-load voltage regulating transformer and unified power flow control system |
| CN112242702A (en) * | 2019-07-19 | 2021-01-19 | 国网江苏省电力有限公司 | Controllable phase shifter and control method thereof |
| CN114121449A (en) * | 2021-11-25 | 2022-03-01 | 云南电网有限责任公司电力科学研究院 | Phase-shifting transformer |
| WO2024051869A1 (en) * | 2022-09-08 | 2024-03-14 | 国网智能电网研究院有限公司 | Three-phase voltage impedance adjustable transformer and control method and control apparatus therefor, computer device, storage medium and computer program product |
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