CN205724897U - Parallel connection mixed type SSSC - Google Patents
Parallel connection mixed type SSSC Download PDFInfo
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- CN205724897U CN205724897U CN201620625766.3U CN201620625766U CN205724897U CN 205724897 U CN205724897 U CN 205724897U CN 201620625766 U CN201620625766 U CN 201620625766U CN 205724897 U CN205724897 U CN 205724897U
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- 238000004804 winding Methods 0.000 claims abstract description 34
- 230000007246 mechanism Effects 0.000 claims abstract description 22
- 230000005540 biological transmission Effects 0.000 claims abstract description 10
- 230000005611 electricity Effects 0.000 claims abstract description 9
- 239000003990 capacitor Substances 0.000 claims description 43
- 230000008447 perception Effects 0.000 claims description 18
- 239000000126 substance Substances 0.000 claims 1
- 230000003068 static effect Effects 0.000 abstract description 10
- 238000010586 diagram Methods 0.000 description 4
- 230000001939 inductive effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000005012 migration Effects 0.000 description 4
- 238000013508 migration Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
Abstract
The utility model provides a kind of parallel connection mixed type SSSC, including transverter, fixed skew compensation mechanism and series transformer；Transverter series connection accesses in transmission line of electricity, and fixed skew compensation mechanism is in parallel with described transverter；Or, the side winding parallel of transverter and series transformer；The opposite side winding of series transformer accesses in transmission line of electricity, and winding two ends, described side are parallel with the first by-pass switch；Fixed skew compensation mechanism in parallel with transverter or with described opposite side winding parallel.Compared with prior art, a kind of parallel static synchronization series compensator that the utility model provides, can significantly reduce transverter desired volume, cost-effective, is provided simultaneously with the function of current limliting.
Description
Technical field
The utility model relates to electric and electronic technical field, is specifically related to a kind of parallel connection mixed type Static Synchronous Series and compensates
Device.
Background technology
SSSC is the synchronous voltage source controller that application full-controlled device is constituted, and it is mainly by the change of current
Device, controller and system access equipment composition.For transmission system, owing to line current higher grade, SSSC device is usual
It is to be linked in system by series transformer.SSSC uses Capacitor banks to make to circuit series connection injecting compensating voltage, DC side
For voltage support element, in addition to device loss itself, SSSC is general and there is not the exchange of active power between system, therefore mends
Repay voltage phasor and differ approximation 90 ° with line current phasor.SSSC is equivalent to a synchronization AC power, when SSSC inject controlled
Voltage and the pressure drop opposite in phase or identical on line reactance, can play the effect of similar series electrical perhaps inductance.SSSC capacitive
During compensation, circuit active power increases with the increase of injecting voltage amplitude；During inductive compensation, active power is with injecting voltage width
Value increases and reduces.Therefore SSSC can be equivalent to quickly to control capacitive, the perception bidirectional variable impedance of line power, has excellent
Good control performance.External put into operation convertible static compensator (Convertible Static Compensator,
CSC) pass through switching manipulation, be capable of SSSC mode operation, it can be considered that abroad have case history.New York electric power is public
Department and U.S.'s DianKeYuan, Siemens Company cooperates, and has put into operation a set of CSC device in New York Marcy transformer station in June, 2004
(345kV, 200MVA), can realize two set capacity respectively for the SSSC operational mode of 100MVA.
Conventional SSSC control flexible function and remarkable, but it is promoted the use of in power system and is not had
Standby capacity and price advantage.Though traditional capacitor, reactor are as circuit series compensation, but flexibility and responsiveness all can not
Meet the requirement of accurately regulation.
Utility model content
In order to meet the needs of prior art, the utility model provides a kind of parallel connection mixed type Static Synchronous Series and compensates
Device.
The technical solution of the utility model is:
Described SSSC includes transverter, fixed skew compensation mechanism and series transformer；
The series connection of described transverter accesses in transmission line of electricity, and described fixed skew compensation mechanism is in parallel with described transverter；
Or,
Described transverter and the side winding parallel of described series transformer；The opposite side winding of described series transformer connects
Entering in transmission line of electricity, described opposite side winding two ends are parallel with the first by-pass switch；Described fixed skew compensation mechanism with
The parallel connection of described transverter or the opposite side winding parallel with described series transformer.
The optimal technical scheme that the utility model further provides for is: described transverter two ends are parallel with the second bypass and open
Close.
The optimal technical scheme that the utility model further provides for is: the first bypass of described SSSC
Switch and the second by-pass switch include mechanical switch or electronic power switch, or the mechanical switch and the electric power that are connected in parallel are electric
Son switch.
The optimal technical scheme that the utility model further provides for is: described fixed skew compensation mechanism includes that capacitive is inclined
Shifting type compensation device, perception offset-type compensation device or two-way offset-type compensation device；
Described capacitive offset-type compensation device includes capacitor unit and first switch of series connection；
Described perception offset-type compensation device includes reactor unit and the second switch of series connection；
Described two-way offset-type compensation device includes that the described capacitive offset-type compensation device of parallel connection and perception offset-type are mended
Repay device.
The optimal technical scheme that the utility model further provides for is:
Described capacitor unit include a capacitor or the series capacitor bank being made up of multiple capacitors or by
The Shunt Capacitor Unit of multiple capacitors composition；Described Shunt Capacitor Unit includes that automatic switching switchs, and this automatic switching switchs
For putting into and exit the capacitor in Shunt Capacitor Unit, thus realize the capacitance regulation of Shunt Capacitor Unit；
Described reactor unit include a reactor or the shunt reactor group being composed in parallel by multiple reactors or
The current-limiting reactor group that person is composed in series by multiple reactors；The reactor of described current-limiting reactor group is provided with tap.
The optimal technical scheme that the utility model further provides for is:
Described first switch and second switch all include any one switch in breaker, disconnecting switch and electronic power switch
Or any two switches of parallel connection；
Described electronic power switch includes the IGCT two-way switch being made up of the IGCT of reverse parallel connection, by changing institute
The Trigger Angle stating IGCT adjusts the equiva lent impedance of described reactor unit.
The optimal technical scheme that the utility model further provides for is: described transverter all include two level converters, three
Level converter, diode clamp bit-type transverter, striding capacitance type transverter, modularization multi-level converter, H bridge cascade connection type are many
Level converter or voltage source converter；
Described transverter all uses phase structure, three-phase structure or 3 phase structure.
The optimal technical scheme that the utility model further provides for is: when described series transformer uses three-winding transformer
When, the side winding of described three-winding transformer is in parallel with described transverter, and side winding fills with described fixed migration
Putting parallel connection, side windings in series accesses transmission line of electricity, this winding two ends, side described first by-pass switch in parallel.
Compared with immediate prior art, the beneficial effects of the utility model are:
1st, a kind of mixed static synchronization series compensator that the utility model provides, is capable of capacitive, perceptual two-way
Compensating, compensation model can switch rapidly according to system requirements；
2nd, a kind of mixed static synchronization series compensator that the utility model provides, by reactor, capacitor and controls entirely
Type power electronics transverter combines, it is only necessary to less transverter capacity can realize that large-scale capacitive compensation and perception are mended
Repay；
3rd, a kind of mixed static synchronization series compensator that the utility model provides, the configuration by the device that goes into operation can
Under different operating conditions, effectively protection mixed static synchronizes series compensator；
4th, a kind of mixed static synchronization series compensator that the utility model provides, can significantly reduce needed for transverter
Capacity, cost-effective, it is provided simultaneously with the function of current limliting.
Brief description
Below in conjunction with the accompanying drawings the utility model is further illustrated.
Fig. 1: a kind of parallel connection mixed type SSSC structural representation in the utility model embodiment；
Fig. 2: another kind of parallel connection mixed type SSSC structural representation in the utility model embodiment；
Fig. 3: the equivalent circuit diagram of capacitive compensation in the utility model embodiment；
Fig. 4: the equivalent circuit diagram of inductive compensation in the utility model embodiment.
Fig. 5: perception offset-type compensation device structural representation in the utility model embodiment；
Fig. 6: capacitive offset-type compensation device structural representation in the utility model embodiment；
Fig. 7: two-way offset-type compensation device structural representation in the utility model embodiment；
Fig. 8: another kind of two-way offset-type compensation device structural representation in the utility model embodiment；
Fig. 9: in the utility model embodiment, the yet another construction of a kind of parallel connection mixed type SSSC is shown
It is intended to.
Detailed description of the invention
Of the present utility model embodiment is described below in detail, and the example of described embodiment is shown in the drawings, wherein ad initio
To the element that same or similar label represents same or similar element or has same or like function eventually.Below by ginseng
It is exemplary for examining the embodiment that accompanying drawing describes, it is intended to be used for explaining the utility model, and it is not intended that to the utility model
Restriction.
A kind of parallel connection mixed type SSSC providing the utility model below in conjunction with the accompanying drawings is carried out in detail
Describe in detail bright.The parallel connection mixed type SSSC that the utility model provides includes transverter, fixed migration
Device and series transformer, wherein,
1st, when SSSC includes transverter and fixed skew compensation mechanism, transverter series connection accesses defeated
In electric line, fixed skew compensation mechanism is in parallel with described transverter.
2nd, when SSSC includes transverter, fixed skew compensation mechanism and series transformer, the change of current
Device and the side winding parallel of series transformer；The opposite side winding of series transformer accesses in transmission line of electricity, opposite side around
Group two ends are parallel with the first by-pass switch.Fixed skew compensation mechanism in parallel with transverter or with opposite side winding simultaneously
Connection.
Fig. 1 is a kind of parallel connection mixed type SSSC structural representation in the utility model embodiment, as
Shown in figure, in this enforcement, fixed skew compensation mechanism is in parallel with transverter, and transverter two ends are parallel with the second by-pass switch, quiet
Only the first by-pass switch and second by-pass switch of synchronization series compensator includes mechanical switch or electronic power switch, or
The mechanical switch being connected in parallel and electronic power switch.
Fig. 2 is another kind of parallel connection mixed type SSSC structural representation in the utility model embodiment,
As it can be seen, originally implement the opposite side winding parallel of middle fixed skew compensation mechanism and series transformer, transverter two ends
Being parallel with the second by-pass switch, the first by-pass switch and second by-pass switch of SSSC include mechanical switch
Or electronic power switch, or the mechanical switch that is connected in parallel and electronic power switch.
In the utility model, fixed skew compensation mechanism includes that capacitive offset-type compensation device, perception offset-type compensate dress
Put or two-way offset-type compensation device.Wherein,
Fig. 6 is the structural representation of capacitive offset-type compensation device in the utility model embodiment, as it can be seen, this enforcement
In example, capacitive offset-type compensation device includes capacitor unit and first switch of series connection.Capacitor unit includes a capacitor
Or the series capacitor bank being made up of multiple capacitors or the Shunt Capacitor Unit being made up of multiple capacitors；Described parallel connection
Capacitor banks includes that automatic switching switchs, and this automatic switching switch is used for putting into and exit the capacitor in Shunt Capacitor Unit,
Thus realize the capacitance regulation of Shunt Capacitor Unit.
First switch includes in breaker, disconnecting switch and electronic power switch any two of any one switch or parallel connection
Switch.Electronic power switch includes the IGCT two-way switch being made up of the IGCT of reverse parallel connection, by changing IGCT
Trigger Angle adjusts the equiva lent impedance of described reactor unit.
In the present embodiment, capacitive offset-type compensation device is used for maintaining SSSC to be operated in capacitive compensation
Pattern, its capacitor unit provides the steady-state operation operating point of a forward migration, and transverter provides dynamic operating range；Pass through
Adjust capacitance or the serial number of capacitor in capacitor unit, regulate steady-state operation operating point.
Fig. 3 is the equivalent circuit diagram of capacitive compensation in the utility model embodiment, as it can be seen, fixed in the present embodiment
Skew compensation mechanism is equivalent to electric capacity, in parallel with voltage source converter, can undertake part line current and realize capacitive compensation.
Fig. 5 is the structural representation of perception offset-type compensation device in the utility model embodiment, as it can be seen, this enforcement
In example, perception offset-type compensation device includes reactor unit and the second switch of series connection.Reactor unit includes a reactor
Or the shunt reactor group being composed in parallel by multiple reactors or the current-limiting reactor group being composed in series by multiple reactors；
The reactor of current-limiting reactor group is provided with tap.
Second switch all includes in breaker, disconnecting switch and electronic power switch wantonly the two of any one switch or parallel connection
Plant switch.Electronic power switch includes the IGCT two-way switch being made up of the IGCT of reverse parallel connection, by changing IGCT
Trigger Angle adjust the equiva lent impedance of described reactor unit.
In the present embodiment, perception offset-type compensation device is used for maintaining described SSSC to be operated in perception
Compensation model, its reactor unit provides the steady-state operation operating point of a reserve migration, and transverter provides dynamic operating range；
By adjusting capacitance or the serial number of reactor in reactor unit, regulate steady-state operation operating point.
Fig. 4 is the equivalent circuit diagram of inductive compensation in the utility model embodiment, as it can be seen, fixed in the present embodiment
Skew compensation mechanism is equivalent to inductance, in parallel with voltage source converter, can undertake part line current and realize inductive compensation.
Fig. 7 is the structural representation of two-way offset-type compensation device in the utility model embodiment, as it can be seen, this enforcement
In example, two-way offset-type compensation device includes capacitive offset-type compensation device and the perception offset-type compensation device of parallel connection.
In the present embodiment, two-way offset-type compensation device includes capacitive modes of deflection and perception modes of deflection；
1st, capacitive modes of deflection includes:
First switch Guan Bi, second cut-offs out, then two-way offset-type compensation device works in capacitive modes of deflection；Or,
When second switch uses IGCT two-way switch, by adjusting the Trigger Angle of its IGCT so that reactor unit
Equivalent reactance less than the equivalent capacitive reactance of capacitor unit, then two-way offset-type compensation device works in capacitive modes of deflection.
2nd, perception modes of deflection includes:
First switches off, and second switch closes, then two-way offset-type compensation device works in perception modes of deflection；Or
Person,
When second switch uses IGCT two-way switch, by adjusting the Trigger Angle of its IGCT so that reactor unit
Equivalent reactance more than the equivalent capacitive reactance of capacitor unit, then two-way offset-type compensation device works in perceptual modes of deflection.
In the utility model transverter all include two level converters, three-level converter, diode clamp bit-type transverter,
In striding capacitance type transverter, modularization multi-level converter, H bridge cascade multi-level converter and voltage source converter
Any one；Transverter all uses any one of phase structure, three-phase structure and 3 phase structure, is applied to three-phase four-wire system
Or corresponding can adjust converter structure with fit applications needs when being applied to double loop, many loop lines.
Fig. 8 is the another kind of structural representation of two-way offset-type compensation device in the utility model embodiment, as it can be seen,
In the present embodiment, two-way offset-type compensation device includes that capacitor, reactor, arrester MOV, mechanical switch S and IGCT leave
Close.Wherein, capacitor, reactor, arrester MOV, mechanical switch S are in parallel, and reactor is connected with thyristor switch, this IGCT
Switch includes the IGCT THY11 and IGCT THY12 of reverse parallel connection.
Fig. 9 is the yet another construction signal of parallel connection mixed type SSSC in the utility model embodiment
Figure, as it can be seen, in the present embodiment series transformer use three-winding transformer when, the side winding of this three-winding transformer with
Described transverter is in parallel, and side winding is in parallel with fixed skew compensation mechanism, and side windings in series accesses transmission line of electricity, and this is one years old
Side winding two ends the first by-pass switch in parallel.
One of ordinary skill in the art will appreciate that all or part of flow process realizing in above-described embodiment method, be permissible
Instructing related hardware by computer program to complete, described program can be stored in a computer read/write memory medium
In, this program is upon execution, it may include such as the flow process of the embodiment of above-mentioned each method.Wherein, described storage medium can be magnetic
Dish, CD, read-only store-memory body (Read-Only, ROM) or random store-memory body (Random Access Memory,
RAM) etc..Meanwhile, the utility model is not noted for protecting the lightning-arrest of electric capacity, coupling transformer, transverter and switching device
The equipment such as device, gap, do not indicate that device manufacture and design and engineering actual implement when, there are not these equipment.Meanwhile, Practical Project
During enforcement, have many isolation switch, breaker, current measure device, voltage measuring apparatus.Here do not draw these to set
Standby, when not indicating that the actual enforcement of engineering, there are not these equipment.
Finally should be noted that: described embodiment is only some embodiments of the present application, rather than whole realities
Execute example.Based on the embodiment in the application, those of ordinary skill in the art are obtained under the premise of not making creative work
Every other embodiment, broadly fall into the application protection scope.
Claims (8)
1. a parallel connection mixed type SSSC, it is characterised in that described SSSC includes
Transverter, fixed skew compensation mechanism and series transformer；
The series connection of described transverter accesses in transmission line of electricity, and described fixed skew compensation mechanism is in parallel with described transverter；
Or,
Described transverter and the side winding parallel of described series transformer；The opposite side winding of described series transformer accesses defeated
In electric line, described opposite side winding two ends are parallel with the first by-pass switch；Described fixed skew compensation mechanism with described
Transverter parallel connection or the opposite side winding parallel with described series transformer.
2. a kind of parallel connection mixed type SSSC as claimed in claim 1, it is characterised in that described transverter
Two ends are parallel with the second by-pass switch.
3. a kind of parallel connection mixed type SSSC as claimed in claim 1 or 2, it is characterised in that described quiet
Only the first by-pass switch and second by-pass switch of synchronization series compensator includes mechanical switch or electronic power switch, or
The mechanical switch being connected in parallel and electronic power switch.
4. a kind of parallel connection mixed type SSSC as claimed in claim 1, it is characterised in that described fixed
Skew compensation mechanism includes capacitive offset-type compensation device, perception offset-type compensation device or two-way offset-type compensation device；
Described capacitive offset-type compensation device includes capacitor unit and first switch of series connection；
Described perception offset-type compensation device includes reactor unit and the second switch of series connection；
Described two-way offset-type compensation device includes that the described capacitive offset-type compensation device of parallel connection and perception offset-type compensate dress
Put.
5. a kind of parallel connection mixed type SSSC as claimed in claim 4, it is characterised in that
Described capacitor unit includes a capacitor or the series capacitor bank being made up of multiple capacitors or by multiple
The Shunt Capacitor Unit of capacitor composition；Described Shunt Capacitor Unit includes that automatic switching switchs, and this automatic switching switch is used for
The capacitor putting into and exiting in Shunt Capacitor Unit, thus realize the capacitance regulation of Shunt Capacitor Unit；
Described reactor unit include a reactor or the shunt reactor group being composed in parallel by multiple reactors or by
The current-limiting reactor group that multiple reactors are composed in series；The reactor of described current-limiting reactor group is provided with tap.
6. a kind of parallel connection mixed type SSSC as claimed in claim 4, it is characterised in that
Described first switch and second switch all include in breaker, disconnecting switch and electronic power switch any one switch or
Any two switches in parallel；
Described electronic power switch includes the IGCT two-way switch being made up of the IGCT of reverse parallel connection, by changing described crystalline substance
The Trigger Angle of brake tube adjusts the equiva lent impedance of described reactor unit.
7. a kind of parallel connection mixed type SSSC as claimed in claim 1, it is characterised in that described transverter
All include that two level converters, three-level converter, diode clamp bit-type transverter, striding capacitance type transverter, modularization are many
Level converter, H bridge cascade multi-level converter or voltage source converter；
Described transverter all uses phase structure, three-phase structure or 3 phase structure.
8. a kind of parallel connection mixed type SSSC as claimed in claim 1, it is characterised in that when described series connection
When transformer uses three-winding transformer, the side winding of described three-winding transformer is in parallel with described transverter, side winding
In parallel with described fixed skew compensation mechanism, side windings in series accesses transmission line of electricity, and this winding two ends, side are in parallel described
First by-pass switch.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620625766.3U CN205724897U (en) | 2016-06-22 | 2016-06-22 | Parallel connection mixed type SSSC |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620625766.3U CN205724897U (en) | 2016-06-22 | 2016-06-22 | Parallel connection mixed type SSSC |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105977974A (en) * | 2016-06-22 | 2016-09-28 | 全球能源互联网研究院 | Parallel hybrid static synchronous series compensator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105977974A (en) * | 2016-06-22 | 2016-09-28 | 全球能源互联网研究院 | Parallel hybrid static synchronous series compensator |
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