CN201966612U - Multi-tower suspension type high voltage direct current filter capacitor device - Google Patents
Multi-tower suspension type high voltage direct current filter capacitor device Download PDFInfo
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- CN201966612U CN201966612U CN2011200341309U CN201120034130U CN201966612U CN 201966612 U CN201966612 U CN 201966612U CN 2011200341309 U CN2011200341309 U CN 2011200341309U CN 201120034130 U CN201120034130 U CN 201120034130U CN 201966612 U CN201966612 U CN 201966612U
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Abstract
The utility model relates to a multi-tower suspension type high voltage direct current filter capacitor device, which comprises 3-5 capacitor towers, and support towers. The racks at the top parts of the capacitor towers are mutually connected; the quantity of the support towers is the same with the quantity of the capacitor towers; moreover, the top parts of the support towers are connected with crossbeams; the racks at the top layer of each capacitor tower are hung on the crossbeams of the support towers through top part suspension insulators; interlaminar suspension insulators are arranged between the racks at each layer; and bottom part suspension insulators are arranged between the rack at the bottom layer and a foundation; the racks at the top layer and a top part component are connected by top post insulators; the rack at the bottom part is connected with a transverse post insulator and a bottom part component; all the bottom part components and the foundation are supported by the bottom part post insulators; each container tower comprises 15-50 layers of racks; each layer of racks is provided with a plurality of container units; and 'H'-shaped connection wires or II-shaped connection wires are selected as primary connection wires to form three or more internal fault protection systems. A plurality of capacitor towers and support towers of the multi-tower suspension type high voltage direct current filter capacitor device form a whole body and together share the load of the capacitor towers; therefore, the center of gravity of the multi-tower suspension type high voltage direct current filter capacitor device is more stable; the shock resistance of the multi-tower suspension type high voltage direct current filter capacitor device is improved; and the running reliability of the multi-tower suspension type high voltage direct current filter capacitor device is improved.
Description
(1) technical field
The utility model relates to the high voltage dc transmission technology field, is specifically related to a kind of multitower suspension type high voltage direct current filter capacitor apparatus that super high voltage direct current electricity transmission and extra-high voltage direct-current transmission are used that is used for.
(2) background technology
In electric power system, particularly in the ultra-high/extra-high voltage DC transmission system,, need to use a large amount of DC filter capacitors devices for the AC harmonic component of filtering appts DC side.After a plurality of capacitors connect through certain connection in series-parallel, directly receive ± 500kV even ± dc bus of 1000kV on.These capacitor devices all need to adopt graded insulation, between just every layer capacitor, must separate with insulator between capacitor and the ground.Because capacitor has the characteristics of " stopping direct current, the logical interchange ", so in the capacitor group, direct voltage is by distribution of resistance.This creepage ratio that just requires insulator in the dc fields is apart from bigger.Test shows, dc fields insulator creepage than apart from requiring to reach at least 41mm/kV (composite insulator) or more than the 54mm/kV (porcelain insulator), even reach 50mm/kV (composite insulator) or more than the 68mm/kV (porcelain insulator).Therefore ± and the height of 1000kV suspension type multi-layer capacitor pylon reaches about 52m, and single pylon weight reaches 50 to 70 tons.This brings great difficulty for the antidetonation of capacitor tower.Adopt the stent-type capacitor device to be difficult to realize so high shockproof requirements at present.Therefore adopt suspension type multi-layer capacitor pylon with the DC filter capacitors device, can satisfy the requirement of antidetonation, and margin of safety is big, security reliability height in running for ± 1000kV extra-high voltage direct-current transmission.
At present, the primary structure mode of homemade DC filter capacitors has: 1) single tower rack-like structures.Exactly capacitor is installed on the shelf, directly receives on the ultra-high/extra-high voltage dc bus through the multi-layer classification insulation.The advantage of this frame mode is to be simple and easy to implement, and technology is also very ripe, is the leading frame mode of present DC filter capacitors device.Shortcoming be suitable for voltage can only be at ± 660kV and following, and single pool-size can not be too big; 2) single tower suspension type structure.Exactly capacitor is installed on the shelf of a suspention, directly receives on the ultra-high/extra-high voltage dc bus through the multi-layer classification insulation.The advantage of this frame mode is to have avoided anti-seismic problem, and technology is also very ripe.Shortcoming is the maintenance difficulty, and single pool-size can not be done too greatly.
Application number is 2010206673233 utility application " multitower high voltage direct current filter capacitor device ", is interconnected by 3～5 capacitor towers, constitutes the multitower supporting structure.A plurality of towers link together at the top, make original separate tower form the integral body of mutual support, have alleviated the stress load of single tower; Center of gravity is more stable, and anti-seismic performance improves greatly.But the support because of its dependence capacitor tower can only be applicable at most ± 800kV super high voltage direct current electricity transmission DC filter capacitors device, and be difficult to satisfy ± the 1000kV extra-high voltage direct-current transmission is with the requirement of DC filter capacitors device.
(3) utility model content
The purpose of this utility model is a kind of multitower suspension type high voltage direct current filter capacitor apparatus of design, interconnect by 3～5 capacitor towers, and the support tower that also has same quantity, the cat head of adjacent support tower has interconnective crossbeam, the stand of each capacitor tower is suspended on the crossbeam of support tower, constitute multitower suspension type structure, improve the stability and the reliability of capacitor device.
The multitower suspension type high voltage direct current filter capacitor apparatus of the utility model design comprises 3～5 capacitor towers, and the top stand of each capacitor tower interconnects through overhead, and 3～5 capacitor towers are connected to become an overall structure; Each capacitor tower comprises 15 layers～50 layers stand, and many capacitor units are arranged on every layer of stand; Also comprise and the identical support tower of capacitor tower quantity, each support tower top has rigid beam to interconnect, the top layer stand of each capacitor tower is suspended to the crossbeam of support tower through the top suspension insulator, there is the interlayer suspension insulator to connect between every layer of stand, has the bottom suspension insulator to be connected between bottom stand and the ground.And have the top struts insulator to be connected between the overhead of top layer stand and cat head, the bottom stand of each capacitor tower interconnects through bottom member, connects through the lateral struts insulator between stand and the bottom member.The bottom shore insulator support is arranged between each bottom member and the ground.
Capacitor unit primary connection on each capacitor tower is " H " type wiring or is the wiring of II type.The wiring of described " H " type is each capacitor unit and is connected to the electric bridge that four electric capacity arms are formed, and is connected with current transformer near the intermediate potential of each electric bridge, forms bridge difference unsymmetrical current protective circuit; It is 2 electric capacity arms, low pressure termination current transformer that the wiring of described II type is that each capacitor unit connects, and 2 arms compose in parallel horizontal poor unsymmetrical current protective circuit.
Capacitor unit primary connection on the described capacitor tower is the wiring of " H " type, draws unsymmetrical current and connects current transformer for the 7th layer～the 35th layer at each pylon.
Perhaps, the capacitor unit primary connection on the described capacitor tower is the wiring of II type, draws unsymmetrical current at each pylon bottom and connects current transformer.
In this programme, 4～32 capacitor units are arranged on every layer of stand of every tower, every layer capacitor unit series connection is 2 strings～8 strings.
The overhead that connects the top stand of each capacitor tower is the high-voltage tube bus, and the bottom member that connects the bottom stand of each capacitor tower is the low-voltage tube bus, is connected to the lateral struts insulator between low-voltage tube bus and the bottom stand.
The upper stage rack-layer of every tower voltage more than 252kV, every layer or every 1～3 layer of installing grading ring.
Preferred version is that 3 support towers constitute three tower prismatic supports, and the mid point that 3 capacitor towers lay respectively at 2 support tower connecting lines also constitutes three tower prismatic supports.Every tower has 8 capacitor units for every layer, and every layer capacitor unit series connection is 4 strings, and the capacitor unit primary connection of every tower is the wiring of " H " type.
Wherein the capacitor unit of 2 capacitor towers connect for doube bridge difference unsymmetrical current protective circuit in parallel be a filter branch; the capacitor unit of another capacitor tower connects to " H " type wiring or the wiring of II type are another filter branch, and promptly the capacitor unit of three capacitor towers is formed 2 filter branch.
The advantage of the utility model multitower suspension type high voltage direct current filter capacitor apparatus is:
1, not only a plurality of capacitor towers link together at the top, and the support tower that the crossbeam that also has a plurality of tops connects is connected as a single entity, the integral body that makes original separate capacitor tower and support tower form mutual support together, the weight of capacitor tower not only obtains the support at the bottom of the tower, also, alleviated the stress load of capacitor tower by top suspension; On the other hand, the whole slenderness ratio of multitower is improved widely, and center of gravity is more stable, and anti-seismic performance improves greatly;
2, every tower constitutes protection of bridge difference unsymmetrical current or horizontal poor unsymmetrical current protection alone, form 3 or more a plurality of capacitor device internal fault protection system, the quantity of comparing capacitor device internal fault protection system with single tower structure has increased, and the protection reliability of capacitor device also is improved;
3, the serial number of every layer capacitor unit increases, and the inner member serial number of single capacitor unit reduces, number in parallel increases, and the reliability of fuse action in increasing improves the operational reliability of capacitor device;
4, increase the serial number of every layer capacitor unit, reduced the rated voltage of single capacitor unit, reduced the active loss of inside, single capacitor unit, the operation temperature rise of capacitor unit reduces, and also improves the operational reliability of capacitor device;
5, the high-voltage tube mother of connection top layer stand helps reducing the surface field intensity of electrified body, reduces the generation of corona.
(4) description of drawings
Fig. 1 is the structural representation of this multitower suspension type high voltage direct current filter capacitor apparatus embodiment 1;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is schematic diagram of " H " type wiring among the embodiment 1;
Fig. 4 is the schematic diagram of II type wiring in this enforcement 2;
Fig. 5 is the three tower capacitor filtering branch road schematic diagrames of embodiment 1.
The figure internal label is:
1, support tower, 2, crossbeam, 3, the top suspension insulator, 4, high-voltage tube bus, 5, the top struts insulator, 6, capacitor unit, 7, interlayer suspended compound insulator, 8, grading ring, 9, tie, 10, stand, 11, low-voltage tube bus, 12, the lateral struts insulator, 13, the bottom suspension insulator, 14, bottom shore insulator, 15, current transformer.
(5) embodiment
This multitower suspension type high voltage direct current filter capacitor apparatus embodiment 1 as shown in Figure 1, 2.3 support towers 1 constitute three tower prismatic supports, and the top of adjacent support tower 1 has crossbeam 2 to connect, and the mid point that 3 capacitor towers lay respectively at 2 support tower 1 connecting lines also constitutes three tower prismatic supports.
Each capacitor tower comprises capacitor unit 6 and stand 10, the top layer stand 10 of each capacitor tower is suspended to the crossbeam 2 of support tower 1 through top suspension insulator 3, between every two-layer stand 10 interlayer suspension insulator 7 is arranged, bottom suspension insulator 13 is arranged between bottom stand 10 and the ground.The top stand 10 of each capacitor tower interconnects through high-voltage tube bus 4, has top struts insulator 5 to be connected between top layer stand 10 and the high-voltage tube bus 4.The bottom stand 10 of each capacitor tower interconnects through low-voltage tube bus 11, connects through lateral struts insulator 12 between stand 10 and the low-voltage tube bus 11.14 supportings of bottom shore insulator are arranged between low-voltage tube bus 11 and the ground.3 support towers 1 and 3 capacitor towers are connected to become an overall structure.
Each capacitor tower of this example has 38 layers of stand 10, and it is 4 strings that 8 capacitor units 6, series connection are arranged on every layer of stand 10.
As shown in Figure 5, the electric bridge that the capacitor of 2 capacitor towers of this example constitutes is in parallel for doube bridge difference unsymmetrical current protective circuit is 1 filter branch, and promptly the capacitor unit of three capacitor towers is formed 2 filter branch.S represents the number of series capacitors unit among the figure, and P represents the number of capacitor unit in parallel; TA represents current transformer; LV represents the low pressure exit, and HV represents the high pressure exit.
The voltage more than the 7th layer of each capacitor tower is higher than 252kV, every 1～3 layer of installing grading ring 8.The the the the the the the 8th, the 11st, the 14th, the 17th, the 21st, the 23rd, the 25th, the 27th, the 29th～38th layer of stand of this example all installed grading ring 8.
Header-terminal capacitance device unit 6 at each capacitor tower connects the high pressure exit, and the capacitor unit 6 of bottom connects the low pressure exit.
This routine used top suspension insulator 3, interlayer suspension insulator 7 and bottom suspension insulator 13 are composite rod insulator.
This routine used top struts insulator 5, lateral struts insulator 12 and bottom shore insulator 14 are the clavate post composite insulator.
This multitower suspension type high voltage direct current filter capacitor apparatus embodiment 2 also has 3 support towers and 3 capacitor towers, and the capacitor unit 6 on each capacitor tower is the wiring of II type through tie 9 primary connections.II type primary connection schematic diagram as shown in Figure 4,152 capacitor units 6 of 38 layers of series connection of each capacitor tower connect electromagnetic current transducer at low-pressure end (bottom of capacitor tower) becomes an arm, 2 arm parallel connections become horizontal poor unsymmetrical current protective circuit.Other structure is all identical with embodiment 1.
Embodiment 3
This multitower suspension type high voltage direct current filter capacitor apparatus embodiment 3; 3 support towers 1 and 3 capacitor towers are also arranged; wherein the capacitor unit 6 on two capacitor towers is the wiring of " H " type through tie 9 primary connections; and in parallel for doube bridge difference unsymmetrical current protective circuit is 1 filter branch, capacitor unit 6 primary connections on another capacitor tower are the wiring of II type.Other structure is all identical with embodiment 1.
The foregoing description is the specific case that the purpose of this utility model, technical scheme and beneficial effect are further described only, and the utility model is not to be defined in this.All any modifications of within scope of disclosure of the present utility model, being made, be equal to replacement, improvement etc., all be included within the protection range of the present utility model.
Claims (9)
1. multitower suspension type high voltage direct current filter capacitor apparatus includes 3～5 capacitor towers, and the top stand (10) of each capacitor tower interconnects through overhead; Each capacitor tower has 15 layers～50 layers stand (10), on having on every layer of stand (10) many capacitor units (6) is arranged; Capacitor unit (6) primary connection on each capacitor tower is " H " type wiring or is the wiring of II type; It is characterized in that:
Also comprise the support tower (1) identical with capacitor tower quantity, adjacent support tower (1) top has rigid beam (2) to interconnect, the top layer stand (10) of each capacitor tower is suspended to the crossbeam (2) of support tower (1) through top suspension insulator (3), the top layer stand (10) of each capacitor tower is suspended to the crossbeam (2) of support tower (1) through top suspension insulator (3), there is interlayer suspension insulator (7) to connect between every layer of stand (10), has bottom suspension insulator (13) to be connected between bottom stand (10) and the ground.
2. multitower suspension type high voltage direct current filter capacitor apparatus according to claim 1 is characterized in that:
The top stand (10) of each capacitor tower interconnects through high-voltage tube bus (4), has top struts insulator (5) to be connected between top layer stand (10) and the high-voltage tube bus (4); The bottom stand (10) of each capacitor tower interconnects through low-voltage tube bus (11), connects through lateral struts insulator (12) between stand (10) and the low-voltage tube bus (11); Bottom shore insulator (14) supporting is arranged between low-voltage tube bus (11) and the ground.
3. multitower suspension type high voltage direct current filter capacitor apparatus according to claim 1 and 2 is characterized in that:
On every layer of stand (10) of each capacitor tower 4～32 capacitor units (6) are arranged, every layer capacitor unit (6) series connection is 2 strings～8 strings.
4. multitower suspension type high voltage direct current filter capacitor apparatus according to claim 1 and 2 is characterized in that:
Capacitor unit (6) primary connection on the described capacitor tower is the wiring of " H " type, draws unsymmetrical current the 7th layer～the 35th layer of each capacitor tower and connects current transformer (15); Described current transformer (15) is optical fiber type current transformer or photoelectric type current transformer or hybrid optoelectronic current transformer or electronic current mutual inductor.
5. multitower suspension type high voltage direct current filter capacitor apparatus according to claim 1 and 2 is characterized in that:
Capacitor unit (6) primary connection on the described capacitor tower is the wiring of II type, draws unsymmetrical current at each pylon bottom and connects current transformer (15); Described current transformer (15) is an electromagnetic current transducer.
6. multitower suspension type high voltage direct current filter capacitor apparatus according to claim 1 and 2 is characterized in that:
The top stand (10) of each capacitor tower voltage more than 252kV, every layer or every 1～3 layer installing grading ring (8).
7. multitower suspension type high voltage direct current filter capacitor apparatus according to claim 1 and 2 is characterized in that:
3 support towers (1) constitute three tower prismatic supports, and the mid point that 3 capacitor towers lay respectively at adjacent 2 support towers (1) connecting line also constitutes three tower prismatic supports.
8. multitower suspension type high voltage direct current filter capacitor apparatus according to claim 7 is characterized in that:
Each capacitor tower has 8 capacitor units (6) for every layer, and every layer capacitor unit (6) series connection is 4 strings.
9. multitower suspension type high voltage direct current filter capacitor apparatus according to claim 8 is characterized in that:
Wherein the capacitor unit of 2 capacitor towers (2) connects and is doube bridge difference unsymmetrical current protective circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200341309U CN201966612U (en) | 2011-01-31 | 2011-01-31 | Multi-tower suspension type high voltage direct current filter capacitor device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200341309U CN201966612U (en) | 2011-01-31 | 2011-01-31 | Multi-tower suspension type high voltage direct current filter capacitor device |
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| Publication Number | Publication Date |
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| CN201966612U true CN201966612U (en) | 2011-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200341309U Expired - Lifetime CN201966612U (en) | 2011-01-31 | 2011-01-31 | Multi-tower suspension type high voltage direct current filter capacitor device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102941459A (en) * | 2012-12-11 | 2013-02-27 | 桂林电力电容器有限责任公司 | Installation tool and installation process of suspension type capacitor tower device |
| CN107068394A (en) * | 2017-05-27 | 2017-08-18 | 桂林电力电容器有限责任公司 | A kind of capacitor device |
| CN108565882A (en) * | 2018-05-29 | 2018-09-21 | 中国电力工程顾问集团西南电力设计院有限公司 | A kind of convertor station direct current filter high-voltage capacitor connecting structure for electrical equipment |
-
2011
- 2011-01-31 CN CN2011200341309U patent/CN201966612U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102941459A (en) * | 2012-12-11 | 2013-02-27 | 桂林电力电容器有限责任公司 | Installation tool and installation process of suspension type capacitor tower device |
| CN102941459B (en) * | 2012-12-11 | 2014-10-01 | 桂林电力电容器有限责任公司 | Installation tool and installation process of suspension type capacitor tower device |
| CN107068394A (en) * | 2017-05-27 | 2017-08-18 | 桂林电力电容器有限责任公司 | A kind of capacitor device |
| CN108565882A (en) * | 2018-05-29 | 2018-09-21 | 中国电力工程顾问集团西南电力设计院有限公司 | A kind of convertor station direct current filter high-voltage capacitor connecting structure for electrical equipment |
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Granted publication date: 20110907 |
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| CX01 | Expiry of patent term |