CN209434719U - A kind of direct current field structure of soft straight back-to-back converter substation - Google Patents
A kind of direct current field structure of soft straight back-to-back converter substation Download PDFInfo
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- CN209434719U CN209434719U CN201920108655.9U CN201920108655U CN209434719U CN 209434719 U CN209434719 U CN 209434719U CN 201920108655 U CN201920108655 U CN 201920108655U CN 209434719 U CN209434719 U CN 209434719U
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Abstract
The utility model discloses a kind of direct current field structures of soft straight back-to-back converter substation.It is located in soft straight valve hall and is set between rectification side change of current valve tower and inverter side change of current valve tower, the direct-current polar earthing switch, divider, OCT, arrester and support insulator are sequentially arranged between the rectification side change of current valve tower and the inverter side change of current valve tower, the direct-current polar earthing switch is connect by connection gold utensil and connecting wire with the rectification side change of current valve tower, and the support insulator is connect by the connection gold utensil and the connecting wire with the inverter side change of current valve tower；OCT is connect with the divider and arrester respectively by the connection gold utensil and the connecting wire；Divider is detachably connected by the connection gold utensil and the connecting wire with the direct-current polar earthing switch, and arrester is detachably connected by connection gold utensil and the connecting wire with support insulator.The utility model has the advantages of saving equipment investment, reducing occupied area.
Description
Technical field
The utility model relates to Power System Flexible technical field of electric power transmission, more specifically say it is a kind of and soft directly change back-to-back
Flow the direct current field structure at station.
Background technique
Flexible DC transmission be it is a kind of by voltage source converter, switching device and pulse modulation technology can be turned off based on
New Technologies of Electric Power Transmission.Compared to customary DC power transmission mode, soft straight transmission of electricity has without reactive compensation, is dangerous without commutation failure, having
Function and it is idle can independent control, the features such as converter station occupied area is small, therefore, have broad application prospects.
Flexible direct current back-to-back converter substation is to realize the asynchronous networking of both ends electric system using soft straight commutation technique.
Soft straight back-to-back converter substation DC fields mainly include direct current measuring devices (abbreviation OCT), DC voltage measuring device (abbreviation
Divider), equipment, the DC fields such as arrester and earthing switch are arranged between rectification side and inverter side；Due to soft straight back-to-back
There are one end to charge for converter station, the uncharged operating condition of the other end, and exits one end, the other end as STATCOM (Static Synchronous
Compensator) operation operating condition, therefore, DC fields arrange when enough fractures (as shown in Figure 1) need to be set between the ends, to keep away
Exempt from not charged end to impact live end；But it exists following insufficient: 1) equipment investment is larger: to meet existing soft directly lean against
The electrification of converter station one end, the uncharged service requirement of the other end are carried on the back, generally respectively installs one in direct-current polar rectification side and inverter side
Group disconnecting switch.When needing rectification side or inverter side unilateral side charging operation, by open by inverter side or by rectification side every
Leave pass.Using this kind of arrangement, on every group of direct-current polar, except one group of earthing switch of each installing, divider, OCT, keep away
Except thunder device, two groups of disconnecting switch of installing are also needed；2) take up an area larger: using the arrangement of existing installing disconnecting switch, if pole
Each equipment is still once arranged by "-" type on line, then compared to the arrangement for cancelling disconnecting switch, direct-current polar longitudinal size will
Increase about 12m, when soft straight change of current valve tower and direct current field device use indoor arrangement, DC fields land occupation, which increases, will make soft straight valve
Room size is increase accordingly；If disconnecting switch is arranged perpendicular to polar curve, although DC fields longitudinal size and cancellation disconnecting switch cloth
Set that mode is substantially suitable, but part is occupied the space for maintenance between the positive and negative polar curve of direct current by disconnecting switch, is unfavorable for the inspection of equipment
Repair maintenance.
Therefore, now need to research and develop the direct current of a kind of saving equipment investment, the soft straight back-to-back converter substation for reducing occupied area
Field structure.
Summary of the invention
The purpose of this utility model is to provide for a kind of direct current field structure of soft straight back-to-back converter substation, saves equipment and throws
Money reduces occupied area or Optimal Maintenance place.
To achieve the goals above, a kind of the technical solution of the utility model are as follows: DC fields of soft straight back-to-back converter substation
Structure is located in soft straight valve hall and is set between rectification side change of current valve tower and inverter side change of current valve tower, it is characterised in that: including
Direct-current polar earthing switch, divider, OCT, arrester and support insulator, the direct-current polar earthing switch, divider,
OCT, arrester and support insulator are sequentially arranged between the rectification side change of current valve tower and the inverter side change of current valve tower, institute
It states direct-current polar earthing switch to connect by connection gold utensil and connecting wire with the rectification side change of current valve tower, the support insulation
Son is connect by the connection gold utensil and the connecting wire with the inverter side change of current valve tower；The OCT passes through the connection
Fitting and the connecting wire are connect with the divider and arrester respectively；The divider passes through the connection gold utensil and institute
It states connecting wire to be detachably connected with the direct-current polar earthing switch, the arrester passes through the connection gold utensil and the company
Conducting wire is connect to be detachably connected with the support insulator.
In the above-mentioned technical solutions, it is isolated between the direct-current polar earthing switch and the divider equipped with first disconnected
Mouthful, the width of first isolation fracture is greater than or equal to 4.3m；The is equipped between the arrester and the support insulator
The width of two isolation fractures, second isolation fracture is greater than or equal to 4.3m.
In the above-mentioned technical solutions, the spacing between the direct-current polar earthing switch and the rectification side change of current valve tower is
10m；Spacing between the support insulator and the inverter side change of current valve tower is 10m；Between the OCT and the divider
Spacing be 3m；Spacing between the OCT and the arrester is 3m.
In the above-mentioned technical solutions, the direct-current polar earthing switch, divider, OCT, arrester and support insulator are equal
For column support type equipment, the bracket of the column support type equipment is steel pipe type bracket.
In the above-mentioned technical solutions, the connecting wire is double division flexible circuit conductors or tubular bus；The connection gold utensil is
Flexible circuit conductor fitting or pipe capital tool.
The present invention has the advantage that
(1) the utility model, which is suitable for soft straight back-to-back converter substation, needs one end electrification, the uncharged operating condition of the other end, is keeping away
The connecting wire between connecting wire or direct-current polar earthing switch and divider between thunder device and support insulator, to protect
Demonstrate,prove the isolation fracture to another uncharged end；It overcomes customary DC field arrangement and foot is respectively set using in rectification side and inverter side
Enough fracture, setting disconnecting switch, the disadvantage that equipment investment is larger, land occupation is larger；The utility model is kept apart than existing installing
The direct-current polar longitudinal size of the arrangement of pass reduces about 12m；
(2) isolation fracture is arranged in the utility model between arrester and support insulator, and opens in direct-current polar ground connection
It closes and isolation fracture is set between divider, to guarantee the isolation fracture requirement to another uncharged end, equipment investment can be saved,
Reduce occupied area or Optimal Maintenance place, with good economic efficiency and social benefit.
Detailed description of the invention
Fig. 1 is the direct current field structure of existing soft straight back-to-back converter substation.
Fig. 2 is the utility model structure diagram.
Fig. 3 is utility model works structural schematic diagram one.
Fig. 4 is utility model works structural schematic diagram two.
1- rectification side change of current valve tower in figure, 2- direct-current polar earthing switch, 3- divider, 4-OCT, 5- arrester, 6- branch
Insulator is held, 7- inverter side change of current valve tower, 8- connection gold utensil, the soft straight valve hall of 9-, the first isolation fracture of 10-, 11- second is isolated disconnected
Mouthful, 12- connecting wire.
Specific embodiment
The performance that according to the present invention will be described in detail below with reference to the accompanying drawings, but they are not constituted to the utility model
It limits, it is only for example.The advantages of making the utility model by explanation simultaneously, is more clear and is readily appreciated that.
Refering to known to attached drawing: a kind of direct current field structure of soft straight back-to-back converter substation in soft straight valve hall 9 and is set to
Between rectification side change of current valve tower 1 and inverter side change of current valve tower 7, including it is direct-current polar earthing switch 2, divider 3, OCT 4, lightning-arrest
Device 5 and support insulator 6, the direct-current polar earthing switch 2, divider 3, OCT 4, arrester 5 and support insulator 6 are successively
It is arranged between the rectification side change of current valve tower 1 and the inverter side change of current valve tower 7, the direct-current polar earthing switch 2 passes through
Connection gold utensil 8 and connecting wire 12 are connect with the rectification side change of current valve tower 1, and the support insulator 6 passes through the connection gold
Tool 8 and the connecting wire 12 are connect with the inverter side change of current valve tower 7；The OCT 4 passes through the connection gold utensil 8 and described
Connecting wire 12 is connect with the divider 3 and arrester 5 respectively；The divider 3 passes through the connection gold utensil 8 and the company
It connects conducting wire 12 to be detachably connected with the direct-current polar earthing switch 2, the arrester 5 passes through the connection gold utensil 8 and described
Connecting wire 12 and the support insulator 6 are detachably connected (as shown in Figure 2, Figure 3, Figure 4).
The first isolation fracture 10, first isolation are equipped between the direct-current polar earthing switch 2 and the divider 3
The width of fracture 10 is greater than or equal to 4.3m；The second isolation fracture is equipped between the arrester 5 and the support insulator 6
11, the width of second isolation fracture 11 is greater than or equal to 4.3m；It soft is directly changed back-to-back relative to described in the utility model
The direct current field structure at station is flowed, same corresponding 420kV grade is wanted according to the installation disconnecting switch of the prior art to meet fracture
It asks, and disconnecting switch is arranged using linear type, then longitudinal size need to increase about 12m, and single valve hall increases about 780 squares of land occupation
Rice.
Spacing between the direct-current polar earthing switch 2 and the rectification side change of current valve tower 1 is 10m；It is described to support absolutely
Spacing between edge 6 and the inverter side change of current valve tower 7 is 10m；Spacing between the OCT 4 and the divider 3 is
3m；Spacing between the OCT 4 and the arrester 5 is 3m.
The direct-current polar earthing switch 2, divider 3, OCT 4, arrester 5 and support insulator 6 are that column support type is set
It is standby；Direct-current polar earthing switch 2 uses column support type equipment, earthy when for polar curve maintenance；The divider 3 uses column support type
Equipment, voltage when for measuring DC operation on polar curve；The OCT 4 uses column support type equipment, for measuring DC operation
When polar curve on electric current；The arrester 5 uses column support type equipment, and voltage when for limiting DC operation on polar curve avoids
The influence that overvoltage may cause pole line devices；The support insulator 6 is using column support type equipment (such as Fig. 2, Fig. 3, Fig. 4 institute
Show), it is used to support the bus rod of rectification side or inverter side.
The bracket of the column support type equipment is steel pipe type bracket, is used to support pole line devices.
The connecting wire 12 is double division flexible circuit conductors or tubular bus, for realizing circuit between equipment each on polar curve
Connection；The connection gold utensil 8 is that flexible circuit conductor fitting or pipe capital have, for realizing the connection in circuit between equipment each on polar curve.
The course of work of the direct current field structure of the soft straight back-to-back converter substation of one kind described in the utility model is as follows: described whole
Side change of current valve tower 1 is flowed, valve tower is installed using console mode, is fixedly mounted by support insulator；When dc power reverse transfer,
The valve tower also can be used as inverter side；The direct-current polar earthing switch 2 uses column support type equipment, for being grounded when polar curve maintenance
With；The divider 3 uses column support type equipment, voltage when for measuring DC operation on polar curve；The OCT 4 uses pillar
Formula equipment, electric current when for measuring DC operation on polar curve；The arrester 5 is that arrester uses column support type equipment, is used for
Voltage when limiting DC operation on polar curve, the influence for avoiding overvoltage from may cause pole line devices；The support insulator 6
Using column support type equipment, it is used to support the bus rod of rectification side or inverter side；The inverter side change of current valve tower 7 uses console mode
Installation, is fixedly mounted by support insulator；When dc power reverse transfer, which also can be used as rectification side；It is described soft
Straight soft straight valve hall 9 uses steel construction, and roofing uses grid structure, for guaranteeing change of current valve tower and direct-current polar equipment for indoor cloth
It sets.
When rectification side change of current valve tower or the single-ended electrification of inverter side change of current valve tower, by unlocking arrester 5 and supporting to insulate
The connecting wire 12 between connecting wire 12 or direct-current polar earthing switch 2 and divider 3 between son 6 is (such as Fig. 3, Fig. 4 institute
Show), to guarantee the isolation fracture requirement to another uncharged end.
Other unaccounted parts belong to the prior art.
Claims (5)
1. a kind of direct current field structure of soft straight back-to-back converter substation, is located in soft straight valve hall (9) and is set to rectification side change of current valve tower
(1) between inverter side change of current valve tower (7), it is characterised in that: including direct-current polar earthing switch (2), divider (3), OCT
(4), arrester (5) and support insulator (6), the direct-current polar earthing switch (2), divider (3), OCT (4), arrester
(5) it is sequentially arranged between the rectification side change of current valve tower (1) and the inverter side change of current valve tower (7) with support insulator (6),
The direct-current polar earthing switch (2) is connected by connection gold utensil (8) and connecting wire (12) and the rectification side change of current valve tower (1)
It connects, the support insulator (6) passes through the connection gold utensil (8) and the connecting wire (12) and the inverter side change of current valve tower
(7) it connects；The OCT (4) by the connection gold utensil (8) and the connecting wire (12) respectively with the divider (3) and
Arrester (5) connection；The divider (3) passes through the connection gold utensil (8) and the connecting wire (12) and the direct current pole
Line earthing switch (2) is detachably connected, the arrester (5) by the connection gold utensil (8) and the connecting wire (12) with
The support insulator (6) is detachably connected.
2. the direct current field structure of the soft straight back-to-back converter substation of one kind according to claim 1, it is characterised in that: the direct current
The first isolation fracture (10) are equipped between polar curve earthing switch (2) and the divider (3), first isolation fracture (10)
Width is greater than or equal to 4.3m；The second isolation fracture (11) are equipped between the arrester (5) and the support insulator (6),
Second isolation fracture (11) width is greater than or equal to 4.3m.
3. the direct current field structure of the soft straight back-to-back converter substation of one kind according to claim 1 or 2, it is characterised in that: described
Spacing between direct-current polar earthing switch (2) and the rectification side change of current valve tower (1) is 10m；The support insulator (6) with
Spacing between the inverter side change of current valve tower (7) is 10m；Spacing between the OCT (4) and the divider (3) is 3m；
Spacing between the OCT (4) and the arrester (5) is 3m.
4. the direct current field structure of the soft straight back-to-back converter substation of one kind according to claim 3, it is characterised in that: the direct current
Polar curve earthing switch (2), divider (3), OCT (4), arrester (5) and support insulator (6) are column support type equipment, described
The bracket of column support type equipment is steel pipe type bracket.
5. the direct current field structure of the soft straight back-to-back converter substation of one kind according to claim 4, it is characterised in that: the connection
Conducting wire (12) is double division flexible circuit conductors or tubular bus；The connection gold utensil (8) is that flexible circuit conductor fitting or pipe capital have.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920108655.9U CN209434719U (en) | 2019-01-22 | 2019-01-22 | A kind of direct current field structure of soft straight back-to-back converter substation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920108655.9U CN209434719U (en) | 2019-01-22 | 2019-01-22 | A kind of direct current field structure of soft straight back-to-back converter substation |
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| CN209434719U true CN209434719U (en) | 2019-09-24 |
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| CN201920108655.9U Active CN209434719U (en) | 2019-01-22 | 2019-01-22 | A kind of direct current field structure of soft straight back-to-back converter substation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112636611A (en) * | 2020-12-22 | 2021-04-09 | 中国电力工程顾问集团中南电力设计院有限公司 | Offshore flexible direct current converter station valve hall arrangement structure and size calculation method thereof |
-
2019
- 2019-01-22 CN CN201920108655.9U patent/CN209434719U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112636611A (en) * | 2020-12-22 | 2021-04-09 | 中国电力工程顾问集团中南电力设计院有限公司 | Offshore flexible direct current converter station valve hall arrangement structure and size calculation method thereof |
| CN112636611B (en) * | 2020-12-22 | 2022-05-31 | 中国电力工程顾问集团中南电力设计院有限公司 | Offshore flexible direct current converter station valve hall arrangement structure and size calculation method thereof |
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