CN105977973B - A kind of series hybrid SSSC - Google Patents
A kind of series hybrid SSSC Download PDFInfo
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- CN105977973B CN105977973B CN201610459906.9A CN201610459906A CN105977973B CN 105977973 B CN105977973 B CN 105977973B CN 201610459906 A CN201610459906 A CN 201610459906A CN 105977973 B CN105977973 B CN 105977973B
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- 238000004804 winding Methods 0.000 claims abstract description 24
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- 239000003990 capacitor Substances 0.000 claims description 71
- 230000001939 inductive effect Effects 0.000 claims description 14
- 230000002441 reversible effect Effects 0.000 claims description 11
- 230000005012 migration Effects 0.000 claims description 8
- 238000013508 migration Methods 0.000 claims description 8
- 230000008447 perception Effects 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 2
- 230000005611 electricity Effects 0.000 abstract description 20
- 230000005540 biological transmission Effects 0.000 abstract description 18
- 230000003068 static effect Effects 0.000 description 10
- 230000001360 synchronised effect Effects 0.000 description 8
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- 101710084314 Protein BRICK1 Proteins 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 230000006870 function Effects 0.000 description 5
- 230000002829 reductive effect Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000009711 regulatory function Effects 0.000 description 2
- 230000004043 responsiveness Effects 0.000 description 2
- 230000001052 transient effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 230000009514 concussion Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
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- 238000007789 sealing Methods 0.000 description 1
Classifications
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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 kind of series hybrid SSSC, including transverter, series transformer and fixed skew compensation mechanism；Transverter and series transformer are sequentially accessed in transmission line of electricity；Or the side winding parallel of transverter and series transformer, the opposite side winding of series transformer are accessed in transmission line of electricity, described opposite side winding both ends are parallel with the first by-pass switch；Fixed skew compensation mechanism is connected with transverter or connect with described opposite side windings in series.Compared with prior art, a kind of series hybrid SSSC provided by the invention, can significantly reduce capacity needed for transverter, cost-effective, be provided simultaneously with the function of current limliting.
Description
Technical field
The present invention relates to electric and electronic technical field, and in particular to a kind of series hybrid SSSC.
Background technology
SSSC is the synchronous voltage source controller formed using full-controlled device, and it is mainly by the change of current
Device, controller and system access equipment composition.For transmission system, because line current higher grade, SSSC devices are usual
It is to be linked into by series transformer in system.SSSC is made to circuit series connection injecting compensating voltage, DC side using capacitor bank
For voltage support element, in addition to device is lost in itself, exchanging for active power is not present in SSSC typically between system, therefore mends
Repay voltage phasor and line current phasor difference is approximate 90 °.SSSC is equivalent to a synchronous AC power, when SSSC injection it is controllable
Voltage pressure drop opposite in phase or identical with line reactance, similar series electrical perhaps inductance can be played a part of.SSSC capacitives
During compensation, circuit active power increases with the increase of injecting voltage amplitude；Active power is with injecting voltage width during inductive compensation
Value increases and reduced.Therefore SSSC can be equivalent to the capacitive of the quick control circuit power of energy, perceptual bidirectional variable impedance, have excellent
Good control performance.Foreign countries put into operation convertible static compensator (Convertible Static Compensator,
CSC) by switching manipulation, SSSC mode operations can be realized, it can be considered that external existing case history.New York electric power is public
Department and U.S.'s DianKeYuan, Siemens Company's cooperation, have put into operation a set of CSC devices in June, 2004 in New York Marcy transformer stations
(345kV, 200MVA), the SSSC operational modes that two sets of capacity are respectively 100MVA can be achieved.
Conventional SSSC control function is flexibly remarkable, but it is promoted the use of in power system and not had
Standby capacity and price advantage.Though traditional capacitor, reactor all can not as circuit series compensation, flexibility and responsiveness
Meet the requirement of accurate adjustment.
The content of the invention
In order to meet the needs of prior art, the invention provides a kind of series hybrid SSSC.
The technical scheme is that：
The SSSC includes transverter, series transformer and fixed skew compensation mechanism；
The transverter and series transformer are sequentially accessed in transmission line of electricity；
Or the side winding parallel of the transverter and the series transformer, the opposite side of the series transformer
In winding access transmission line of electricity, described opposite side winding both ends are parallel with the first by-pass switch；
The fixed skew compensation mechanism connected with the transverter or with the opposite side of the series transformer around
Group series connection.
The present invention further provides optimal technical scheme be：
If the fixed skew compensation mechanism is connected with the transverter, the series arm both ends are parallel with the second bypass
Switch；
If the fixed skew compensation mechanism and described opposite side windings in series, the transverter both ends are parallel with second
By-pass switch.
The present invention further provides optimal technical scheme be：First by-pass switch and the second by-pass switch include machine
Tool switchs either electronic power switch or the mechanical switch and electronic power switch that are connected in parallel.
The present invention further provides optimal technical scheme be：The fixed skew compensation mechanism includes capacitive offset-type
Compensation device, perceptual offset-type compensation device or two-way offset-type compensation device；
The capacitive offset-type compensation device includes capacitor unit in parallel and first switch；
The perceptual offset-type compensation device includes reactor unit and second switch in parallel；
The two-way offset-type compensation device includes the capacitive offset-type compensation device of series connection and perceptual offset-type is mended
Repay device.
The present invention further provides optimal technical scheme be：
The capacitor unit include a capacitor either by multiple capacitor banks into series capacitor group or by
Multiple capacitor banks into shunt capacitor group；The shunt capacitor group switchs including automatic switching, automatic switching switch
For putting into and exiting the capacitor in shunt capacitor group, so as to realize that the capacitance of shunt capacitor group is adjusted；
The reactor unit include a reactor or the shunt reactor group that is composed in parallel by multiple reactors or
The current-limiting reactor group that person is composed in series by multiple reactors；The reactor of the current-limiting reactor group is provided with tap.
The present invention further provides optimal technical scheme be：
The first switch and second switch include any switch in breaker, disconnecting switch and electronic power switch
Or any two switches in parallel；
The electronic power switch include by reverse parallel connection thyristor groups into IGCT two-way switch, by changing
The Trigger Angle for stating IGCT adjusts the equiva lent impedance of the reactor unit.
The present invention further provides optimal technical scheme be：The capacitive offset-type compensation device is used to remain described quiet
Only synchronous series compensator is operated in capacitive compensation pattern, and its capacitor unit provides the steady-state operation work of a forward migration
Point, the transverter provide dynamic operating range；By adjusting the capacitance or serial number of capacitor in capacitor unit,
Adjust the steady-state operation operating point.
The present invention further provides optimal technical scheme be：The perceptual offset-type compensation device is used to remain described quiet
Only synchronous series compensator is operated in inductive compensation pattern, and its reactor unit provides the steady-state operation work of a reserve migration
Point, the transverter provide dynamic operating range；By adjusting the capacitance or serial number of reactor in reactor unit,
Adjust the steady-state operation operating point.
The present invention further provides optimal technical scheme be：The two-way offset-type compensation device includes capacitive skew mould
Formula and perceptual modes of deflection；
The capacitive modes of deflection includes：
The first switch is disconnected, and the second opening and closing is closed, then the two-way offset-type compensation device works in capacitive skew mould
Formula；Or
When the second switch uses IGCT two-way switch, by the Trigger Angle for adjusting its IGCT so that the electricity
The equivalent reactance of anti-device unit is less than the equivalent capacitive reactance of the capacitor unit, then the two-way offset-type compensation device works in
Capacitive modes of deflection；
The perceptual modes of deflection includes：
The first switch closure, second switch disconnect, then the two-way offset-type compensation device works in perceptual skew
Pattern；Or
When the second switch uses IGCT two-way switch, by the Trigger Angle for adjusting its IGCT so that the electricity
The equivalent reactance of anti-device unit is more than the equivalent capacitive reactance of the capacitor unit, then the two-way offset-type compensation device works in
Perceptual modes of deflection.
The present invention further provides optimal technical scheme be：The transverter includes two level converters, three level
Transverter, diode clamp bit-type transverter, striding capacitance type transverter, modularization multi-level converter, H bridge cascading multiple electrical levels
Transverter or voltage source converter；
The transverter uses phase structure, three-phase structure or 3 phase structure.
Compared with immediate prior art, the beneficial effects of the invention are as follows：
1st, a kind of series hybrid SSSC provided by the invention, it can realize that capacitive, perception are two-way
Compensation, compensation model can switch rapidly according to system requirements；
2nd, a kind of series hybrid SSSC provided by the invention, by reactor, capacitor and full control
Type power electronics transverter is combined, it is only necessary to which large-scale capacitive compensation is can be achieved in less transverter capacity and perception is mended
Repay；
3rd, a kind of series hybrid SSSC provided by the invention, can by the configuration for the device that goes into operation
Series hybrid SSSC is effectively protected under different operating conditions；
4th, a kind of series hybrid SSSC provided by the invention, can be significantly reduced needed for transverter
Capacity, it is cost-effective, it is provided simultaneously with the function of current limliting.
Brief description of the drawings
The present invention is further described below in conjunction with the accompanying drawings.
Fig. 1：A kind of series hybrid SSSC structural representation in the embodiment of the present invention；
Fig. 2：Another series hybrid SSSC structural representation in the embodiment of the present invention；
Fig. 3：Perceptual offset-type compensation device structural representation in the embodiment of the present invention；
Fig. 4：Capacitive offset-type compensation device structural representation in the embodiment of the present invention；
Fig. 5：Two-way offset-type compensation device structural representation in the embodiment of the present invention；
Fig. 6：Series hybrid Static Synchronous Series compensation based on two-way offset-type compensation device in the embodiment of the present invention
Device structural representation；
Fig. 7：Another series hybrid Static Synchronous string based on two-way offset-type compensation device in the embodiment of the present invention
Join compensator structure schematic diagram；
Fig. 8：Two-way offset-type compensation device is mixed using the series connection of thyristor switch and mechanical switch in the embodiment of the present invention
Mould assembly SSSC structural representation；
Fig. 9：The equivalent circuit diagram of capacitive compensation in the embodiment of the present invention；
Figure 10：The equivalent circuit diagram of inductive compensation in the embodiment of the present invention.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.
A kind of series hybrid SSSC provided by the invention is illustrated below in conjunction with the accompanying drawings.This
SSSC includes transverter, series transformer and fixed skew compensation mechanism in invention.Wherein,
1st, when SSSC includes transverter and fixed skew compensation mechanism, transverter is inclined with fixed
Compensation device is moved sequentially to access in transmission line of electricity.
2nd, when SSSC includes transverter, series transformer and fixed skew compensation mechanism, the change of current
The side winding parallel of device and series transformer, the opposite side winding of series transformer are accessed in transmission line of electricity, and described is another
Side winding both ends are parallel with the first by-pass switch.Fixed skew compensation mechanism connected with transverter or with described opposite side
Windings in series connects.First by-pass switch include mechanical switch either electronic power switch or the mechanical switch that is connected in parallel and
Electronic power switch
Fig. 1 is a kind of series hybrid SSSC structural representation in the embodiment of the present invention, as schemed institute
Show, access the defeated of power system in the present embodiment after the opposite side windings in series of fixed skew compensation mechanism and series transformer
In electric line, transverter both ends are parallel with the second by-pass switch.In the present embodiment the second by-pass switch include mechanical switch or
Electronic power switch, or the mechanical switch and electronic power switch being connected in parallel.
Fig. 2 is another series hybrid SSSC structural representation in the embodiment of the present invention, is such as schemed
It is shown, should with the side winding parallel of series transformer after fixed skew compensation mechanism is connected with transverter in the present embodiment
Series arm both ends are parallel with the second by-pass switch.The second by-pass switch includes mechanical switch or power electronics in the present embodiment
Switch, or the mechanical switch and electronic power switch being connected in parallel.
In the present invention transverter include two level converters, three-level converter, diode clamp bit-type transverter, fly across
Capacitor type transverter, modularization multi-level converter, H bridges cascade multi-level converter or voltage source converter；The change of current
Device uses phase structure, three-phase structure or 3 phase structure, applied to three-phase four-wire system or applied to double loop, more
Adjustment converter structure can be corresponded to during loop line to be needed with fit applications.
In the present invention fixed skew compensation mechanism include capacitive offset-type compensation device, perceptual offset-type compensation device or
The two-way offset-type compensation device of person.Wherein,
Fig. 3 is perceptual offset-type compensation device structural representation in the embodiment of the present invention, as illustrated, feeling in the present embodiment
Property offset-type compensation device include reactor unit and second switch in parallel.Reactor unit include a reactor or by
Shunt reactor group that multiple reactors compose in parallel or the current-limiting reactor group being composed in series by multiple reactors；Series electrical
The reactor of anti-device group is provided with tap.
Second switch includes any switch or in parallel wantonly two in breaker, disconnecting switch and electronic power switch
Kind switch；Electronic power switch include by reverse parallel connection thyristor groups into IGCT two-way switch, by changing IGCT
Trigger Angle adjust the equiva lent impedance of the reactor unit.
Perceptual offset-type compensation device is used to maintain SSSC to be operated in inductive compensation in the present embodiment
Pattern, its reactor unit provide the steady-state operation operating point of a reserve migration, and transverter provides dynamic operating range；Pass through
The capacitance or serial number of reactor in reactor unit are adjusted, adjusts the steady-state operation operating point.
Fig. 4 is capacitive offset-type compensation device structural representation in the embodiment of the present invention, as illustrated, holding in the present embodiment
Property offset-type compensation device include capacitor unit in parallel and first switch.Capacitor unit include a capacitor or by
Multiple capacitor banks into series capacitor group or by multiple capacitor banks into shunt capacitor group；Shunt capacitor group bag
Automatic switching switch is included, the automatic switching is switched for putting into and exiting the capacitor in shunt capacitor group, so as to realize simultaneously
Join the capacitance regulation of capacitor bank.
First switch includes any two of any switch or parallel connection in breaker, disconnecting switch and electronic power switch
Switch；Electronic power switch include by reverse parallel connection thyristor groups into IGCT two-way switch, by changing IGCT
Trigger Angle adjusts the equiva lent impedance of the reactor unit.
Capacitive offset-type compensation device is used to maintain SSSC to be operated in capacitive compensation in the present embodiment
Pattern, its capacitor unit provide the steady-state operation operating point of a forward migration, and transverter provides dynamic operating range；Pass through
Adjust the capacitance or serial number of capacitor in capacitor unit, regulation steady-state operation operating point.
Fig. 5 is two-way offset-type compensation device structural representation in the embodiment of the present invention, as illustrated, double in the present embodiment
Include the capacitive offset-type compensation device of series connection and perceptual offset-type compensation device to offset-type compensation device.
Two-way offset-type compensation device includes capacitive modes of deflection and perceptual modes of deflection in the present embodiment；
1st, capacitive modes of deflection includes：
First switch is disconnected, and the second opening and closing is closed, then two-way offset-type compensation device works in capacitive modes of deflection；Or
When second switch uses IGCT two-way switch, by the Trigger Angle for adjusting its IGCT so that reactor unit
Equivalent reactance be less than capacitor unit equivalent capacitive reactance, then two-way offset-type compensation device work in capacitive modes of deflection.
2nd, perceptual modes of deflection includes：
First switch closes, and second switch disconnects, then two-way offset-type compensation device works in perceptual modes of deflection；Or
Person,
When second switch uses IGCT two-way switch, by the Trigger Angle for adjusting its IGCT so that reactor unit
Equivalent reactance be more than capacitor unit equivalent capacitive reactance, then two-way offset-type compensation device work in perceptual modes of deflection.
The invention provides three kinds of series hybrid SSSCs based on two-way offset-type compensation device,
Illustrated separately below with reference to Fig. 6-8.Wherein,
Fig. 6 is the series hybrid Static Synchronous Series compensation based on two-way offset-type compensation device in the embodiment of the present invention
Device structural representation.As illustrated, in the present embodiment SSSC include reactor unit, capacitor unit,
Transverter and series transformer.Wherein,
①：In reactor unit series connection access transmission line of electricity, reactor unit includes the more of a reactor or series connection
Individual reactor, each reactor both ends are parallel with first switch.
②：In capacitor unit series connection access transmission line of electricity, capacitor unit includes the more of a capacitor or series connection
Individual capacitor, each capacitor both ends are parallel with second switch.
③：Transverter is connected in parallel on the side winding both ends of series transformer, the opposite side winding of series transformer and first
By-pass switch is in parallel, it is possible to achieve protection device or the function of extractor.
In the present embodiment transverter using H bridges cascade current converter, MMC type transverter, diode clamp bit-type transverter and
It is any in striding capacitance type transverter.
The structure of first switch, second switch and the first by-pass switch includes two types in the present embodiment：
The first：First switch, second switch and the first by-pass switch use mechanical switch or electronic power switch.
Second：First switch, second switch and the first by-pass switch include mechanical switch and electronic power switch, should
Mechanical switch and electronic power switch are in parallel.
Electronic power switch includes two power electronic devices of reverse parallel connection in above two type structure.This implementation
Electric power electric device can use half control type power electronic devices to use all-controlling power electronics device in example：Half control type
Power electronic devices uses IGCT, and all-controlling power electronics device uses any in IGBT, GTO, IGCT and SIC.
Fig. 7 is another series hybrid Static Synchronous string based on two-way offset-type compensation device in the embodiment of the present invention
Join compensator structure schematic diagram, as illustrated, SSSC includes reactor unit, capacitor in the present embodiment
Unit, transverter and series transformer.Wherein,
①：In reactor unit series connection access transmission line of electricity, reactor unit includes the more of a reactor or series connection
Individual reactor, each reactor both ends are parallel with first switch.
②：In capacitor unit series connection access transmission line of electricity, capacitor unit includes the more of a capacitor or series connection
Individual capacitor, each capacitor both ends are parallel with second switch.
③：Transverter is connected in parallel on the side winding both ends of series transformer, the opposite side winding of series transformer and first
By-pass switch is in parallel, it is possible to achieve protection device or the function of extractor, while the both ends of transverter are parallel with the 3rd switch,
First by-pass switch and the 3rd switch, when tripping occurs for the two middle either switch device, another switching device action.
In the present embodiment transverter using H bridges cascade current converter, MMC type transverter, diode clamp bit-type transverter and
It is any in striding capacitance type transverter.
First switch, second switch, third switch and the structure of the first by-pass switch include two types in the present embodiment：
The first：First switch, second switch, third switch and the first by-pass switch are using mechanical switch or electric power electricity
Sub switch.
Second：First switch, second switch, third switch and the first by-pass switch include mechanical switch and electric power electricity
Sub switch, the mechanical switch and electronic power switch are in parallel.
Electronic power switch includes two power electronic devices of reverse parallel connection in above two type structure.This implementation
Electric power electric device can use half control type power electronic devices to use all-controlling power electronics device in example：Half control type
Power electronic devices uses IGCT, and all-controlling power electronics device uses any in IGBT, GTO, IGCT and SIC.
The mode of operation of series hybrid SSSC includes capacitive compensation pattern and perception in the present invention
Compensation model, the capacitive compensation of transmission line of electricity compensates to be positive defined in the present embodiment, and inductive compensation is Contrary compensation；
①：Capacitive compensation pattern
When first switch closes, and second switch and the first by-pass switch disconnect, SSSC works in
Capacitive compensation pattern.Capacitor unit provides the steady-state operation operating point of a forward migration, and transverter provides dynamic duty model
Enclose, so that the control range of whole compensator significantly increases.
By adjusting the capacitance of capacitor or the serial number of capacitor in capacitor unit, steady-state operation work is adjusted
Make a little, that is, cause the SSSC to possess classification regulatory function.
②：Inductive compensation pattern
When second switch closes, and first switch and the first by-pass switch disconnect, SSSC works in
Inductive compensation pattern.Reactor unit provides the steady-state operation operating point of a reserve migration, and transverter provides dynamic duty model
Enclose, so that the control range of whole compensator significantly increases.
By adjusting the capacitance of reactor or the serial number of capacitor in reactor unit, steady-state operation work is adjusted
Make a little, that is, cause the SSSC to possess classification regulatory function.
After energy storage device is added in transverter, seal in the phase of voltage without orthogonal with line current, i.e., it is advanced or stagnant
90 ° afterwards, the mode of operation of the SSSC is not limited only to simple capacitive compensation pattern and inductive compensation pattern,
And a kind of capacitive partially or partially perceptual complicated compensation characteristic is presented.
Fig. 8 is that two-way offset-type compensation device is mixed using the series connection of thyristor switch and mechanical switch in the embodiment of the present invention
Mould assembly SSSC structural representation, as illustrated, in the present embodiment by first switch, second switch and first
Way switch composes in parallel by mechanical switch and electronic power switch, wherein：
First switch includes mechanical switch BRK1, the IGCT THY11 and IGCT THY12 of reverse parallel connection；
Second switch includes mechanical switch BRK2, the IGCT THY21 and IGCT THY22 of reverse parallel connection；
First by-pass switch includes mechanical switch BRK3, the IGCT THY31 and IGCT THY32 of reverse parallel connection.
The course of work of series hybrid SSSC is in the present embodiment：
1st, the non-access system of SSSC
Before mixed static synchronization series compensator access system 1 and system 2, mechanical switch BRK1, mechanical switch
BRK2, mechanical switch BRK3 are closed, and whole mixed static synchronization series compensator is in bypass condition, not initial to system
Running status has any impact.
2nd, SSSC access system
(1) capacitive compensation pattern
If the reactance of long distance transmission line is larger, the reactance of transmission line of electricity can be compensated by sealing in electric capacity, is reduced
Transmission loss.Therefore by mixed static synchronization series compensator access system 1 and system 2, and it is controlled to work in capacitive benefit
Repay pattern：
Mechanical switch BRK1 is closed, disconnects mechanical switch BRK2 and mechanical switch BRK3, the equal locking of IGCT, now system
Equivalent circuit is as shown in Figure 9.The conventional STATCOM of transverter and series transformer composition can be operated in perceptual benefit
Repay under pattern, so as to reserved larger positive compensation ability, in system jam, it is necessary under improving the scene of transient stability
The alternating currents such as circuit can be at utmost reduced rapidly to resist, improve transient stability limit, and pass through the conventional STATCOM
Dynamic control to system concussion damp.
(2) capacitive compensation pattern switching is to inductive compensation pattern
If SSSC works in capacitive compensation pattern, there is transmission line of electricity overcurrent, then control electricity
The IGCT THY21 and IGCT THY22 at container both ends, and the side winding both ends of series transformer access transmission line of electricity
IGCT THY31 and IGCT THY32 are turned on rapidly, while control machinery switch BRK2 and mechanical switch BRK3 closures, are passed through
Switching device feed-through capacitor, series transformer are to protect mixed static synchronization series compensator.Mechanical switch BRK1 is disconnected,
Put into reactor and carry out current limliting.
Switching method：The IGCT THY21 and IGCT THY22 at rapid conducting capacitor both ends, are closed at machinery and open
BRK2 is closed, mechanical switch BRK1 is disconnected, realizes capacitive compensation pattern switching to inductive compensation pattern.
In the present embodiment, non-corresponding diagram 7 marks the 3rd switch in Fig. 8.If SSSC is applied to higher
When transverter side voltage is less than system side voltage in voltage class, i.e. series transformer, in principle the 3rd switch responsiveness
The first by-pass switch can be faster than, now increasing by the 3rd switch includes the IGCT THY41 and crystalline substance of mechanical switch BRK4, reverse parallel connection
Brake tube THY42, the IGCT THY41 and IGCT THY42 of reverse parallel connection are turned on rapidly when passing by stream online, and transverter is bypassed
To protect transverter.
(3) inductive compensation pattern
When transmission line of electricity because the reason such as short trouble or load increase, parallel line tripping operation causes overload, it is necessary to limit
During stream, mechanical switch BRK2 is closed, disconnects mechanical switch BRK1 and mechanical switch BRK3, the equal locking of IGCT, now system etc.
It is as shown in Figure 10 to be worth circuit.The conventional STATCOM of transverter and series transformer composition can be operated in capacitive compensation
Under pattern, so as to reserved larger Contrary compensation ability.
(4) inductive compensation pattern switching is to capacitive compensation pattern
The IGCT THY11 and IGCT THY12 at rapid conducting reactor both ends, are closed at mechanical switch BRK1, break
Mechanical switch BRK2 is opened, realizes inductive compensation pattern switching to capacitive compensation pattern.
One of ordinary skill in the art will appreciate that realize all or part of flow in above-described embodiment method, being can be with
The hardware of correlation is instructed to complete by computer program, described program can be stored in a computer read/write memory medium
In, the program is upon execution, it may include such as the flow of the embodiment of above-mentioned each method.Wherein, described storage medium can be magnetic
Dish, CD, read-only memory (Read-Only, ROM) or random access memory (Random Access Memory,
RAM) etc..Meanwhile the present invention is in imminent danger is noted for the lightning-arrest of protective condenser, series transformer, transverter and its switching device
The equipment such as device, gap, when not indicating that device manufactures and designs implementation actual with engineering, in the absence of these equipment.Practical Project is implemented
When, isolation switch, breaker, current measure device, the voltage measuring apparatus not marked in many present embodiment accompanying drawings are had,
Do not indicate that engineering it is actual implement when, in the absence of these equipment.
Finally it should be noted that：Described embodiment is only some embodiments of the present application, rather than whole realities
Apply example.Based on the embodiment in the application, those of ordinary skill in the art are obtained under the premise of creative work is not made
Every other embodiment, belong to the application protection scope.
Claims (6)
1. a kind of series hybrid SSSC, it is characterised in that the SSSC includes
Transverter, series transformer and fixed skew compensation mechanism；
The side winding parallel of the transverter and the series transformer, the opposite side winding access of the series transformer are defeated
In electric line, described opposite side winding both ends are parallel with the first by-pass switch；
The fixed skew compensation mechanism is connected with the transverter or the opposite side winding string with the series transformer
Connection；
The fixed skew compensation mechanism includes capacitive offset-type compensation device, perceptual offset-type compensation device or two-way inclined
Shifting type compensation device；
The capacitive offset-type compensation device includes capacitor unit in parallel and first switch；
The perceptual offset-type compensation device includes reactor unit and second switch in parallel；
The two-way offset-type compensation device includes the capacitive offset-type compensation device and perceptual offset-type compensation dress of series connection
Put；
The capacitive offset-type compensation device is used to maintain the SSSC to be operated in capacitive compensation pattern, its
Capacitor unit provides the steady-state operation operating point of a forward migration, and the transverter provides dynamic operating range；Pass through tune
The capacitance or serial number of capacitor in whole capacitor unit, adjust the steady-state operation operating point；
The perceptual offset-type compensation device is used to maintain the SSSC to be operated in inductive compensation pattern, its
Reactor unit provides the steady-state operation operating point of a reserve migration, and the transverter provides dynamic operating range；Pass through tune
The capacitance or serial number of reactor in whole reactor unit, adjust the steady-state operation operating point；
The two-way offset-type compensation device includes capacitive modes of deflection and perceptual modes of deflection；
The capacitive modes of deflection includes：
The first switch is disconnected, and the second opening and closing is closed, then the two-way offset-type compensation device works in capacitive modes of deflection；Or
Person,
When the second switch uses IGCT two-way switch, by the Trigger Angle for adjusting its IGCT so that the reactor
The equivalent reactance of unit is less than the equivalent capacitive reactance of the capacitor unit, then the two-way offset-type compensation device works in capacitive
Modes of deflection；
The perceptual modes of deflection includes：
The first switch closure, second switch disconnect, then the two-way offset-type compensation device works in perceptual modes of deflection；
Or
When the second switch uses IGCT two-way switch, by the Trigger Angle for adjusting its IGCT so that the reactor
The equivalent reactance of unit is more than the equivalent capacitive reactance of the capacitor unit, then the two-way offset-type compensation device works in perception
Modes of deflection.
A kind of 2. series hybrid SSSC as claimed in claim 1, it is characterised in that
If the fixed skew compensation mechanism is connected with the transverter, the series arm both ends are parallel with the second bypass and opened
Close；
If the fixed skew compensation mechanism and described opposite side windings in series, the transverter both ends are parallel with the second bypass
Switch.
3. a kind of series hybrid SSSC as claimed in claim 1 or 2, it is characterised in that described the
Bypass switch and the second by-pass switch include mechanical switch either electronic power switch or the mechanical switch that is connected in parallel and
Electronic power switch.
A kind of 4. series hybrid SSSC as claimed in claim 1, it is characterised in that
The capacitor unit include a capacitor either by multiple capacitor banks into series capacitor group or by multiple
Capacitor bank into shunt capacitor group；The shunt capacitor group is switched including automatic switching, and the automatic switching, which switchs, to be used for
The capacitor for putting into and exiting in shunt capacitor group, so as to realize that the capacitance of shunt capacitor group is adjusted；
The reactor unit include the shunt reactor group that is either composed in parallel by multiple reactors of a reactor or by
The current-limiting reactor group that multiple reactors are composed in series；The reactor of the current-limiting reactor group is provided with tap.
A kind of 5. series hybrid SSSC as claimed in claim 1, it is characterised in that
The first switch and second switch include in breaker, disconnecting switch and electronic power switch any switch or
Any two switches in parallel；
The electronic power switch include by reverse parallel connection thyristor groups into IGCT two-way switch, by changing the crystalline substance
The Trigger Angle of brake tube adjusts the equiva lent impedance of the reactor unit.
A kind of 6. series hybrid SSSC as claimed in claim 1, it is characterised in that the transverter
It is more to include two level converters, three-level converter, diode clamp bit-type transverter, striding capacitance type transverter, modularization
Level converter, H bridges cascade multi-level converter or voltage source converter；
The transverter uses phase structure, three-phase structure or 3 phase structure.
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| CN106849102A (en) * | 2017-03-02 | 2017-06-13 | 安徽伊格瑞德电气设备有限公司 | A kind of mesohigh series compensation and depth current limiting system |
| CN107706924A (en) * | 2017-10-23 | 2018-02-16 | 衢州学院 | A kind of dynamic voltage compensator in series type |
| CN111049147B (en) * | 2020-01-15 | 2024-06-18 | 南京南瑞继保电气有限公司 | Hybrid compensation type inter-circuit power transfer device and control method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104348167A (en) * | 2013-07-26 | 2015-02-11 | 南京南瑞继保电气有限公司 | Static synchronous series compensator start method |
| CN104659793A (en) * | 2015-03-06 | 2015-05-27 | 云南电网有限责任公司电力科学研究院 | Novel series compensation device for power distribution network |
| CN104992043A (en) * | 2015-05-14 | 2015-10-21 | 国家电网公司 | Line voltage boosting effect assessment method based on power distribution network series compensation device |
| CN205724898U (en) * | 2016-06-22 | 2016-11-23 | 全球能源互联网研究院 | Series hybrid SSSC |
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2016
- 2016-06-22 CN CN201610459906.9A patent/CN105977973B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104348167A (en) * | 2013-07-26 | 2015-02-11 | 南京南瑞继保电气有限公司 | Static synchronous series compensator start method |
| CN104659793A (en) * | 2015-03-06 | 2015-05-27 | 云南电网有限责任公司电力科学研究院 | Novel series compensation device for power distribution network |
| CN104992043A (en) * | 2015-05-14 | 2015-10-21 | 国家电网公司 | Line voltage boosting effect assessment method based on power distribution network series compensation device |
| CN205724898U (en) * | 2016-06-22 | 2016-11-23 | 全球能源互联网研究院 | Series hybrid SSSC |
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