CN106786032A - A kind of vibration control apparatus for converter valve - Google Patents
A kind of vibration control apparatus for converter valve Download PDFInfo
- Publication number
- CN106786032A CN106786032A CN201611071038.3A CN201611071038A CN106786032A CN 106786032 A CN106786032 A CN 106786032A CN 201611071038 A CN201611071038 A CN 201611071038A CN 106786032 A CN106786032 A CN 106786032A
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- CN
- China
- Prior art keywords
- converter valve
- ground
- vibration control
- control apparatus
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/54—Anti-seismic devices or installations
Abstract
The present invention relates to a kind of vibration control apparatus for converter valve, the top of converter valve is fixed on the valve Room by some suspension insulators, the bottom of converter valve is by some strain insulators and the oblique drawknot in ground, each strain insulator is connected by damping unit with ground, damping unit includes upper junction plate, lower connecting plate and some springs and damper that are arranged between two pieces of connecting plates, upper junction plate is connected by upper bilateral hinge with the lower end of strain insulator, and lower connecting plate is connected by lower bilateral hinge with ground.Compared with prior art, simple structure of the present invention, be easily installed, limit effect and vibration control effect it is good.
Description
Technical field
The present invention relates to converter technical field, and in particular to a kind of vibration control apparatus for converter valve.
Background technology
With the development of high voltage dc transmission technology, direct current transportation in the composition of China Power Grids, especially " Xi electricity Dong
Send " in played huge effect.Used as the southwest of power source, it is in the multiple area of earthquake, and related electric power sets
The standby security under geological process needs to attract attention.Converter valve is most attaching most importance to for super-pressure and extra-high voltage DC transmission system
One of equipment wanted, the anti-seismic performance of converter valve is to ensure that the key of transmission system safe and reliable operation under geological process.The change of current
Valve is expensive, and the price of converter valve accounts for the 25% of total price in current conversion station complete set of equipments, converter valve in earthquake if it happens
Destruction can cause heavy losses economically.
Converter valve is hung on the steel roof truss of valve hall, similar to suspension system.This suspended structure has
Reduce the geological process that converter valve tower is subject to itself to effect so that the stress response of valve tower is greatly reduced.But due to valve tower
The horizontal rigidity of itself is too small, if the low-frequency component of ground input-to-state stabilization enriches, the level that geological process lower valve tower is produced
Displacement can exceed 1m, may cause the destruction of the gold utensil being connected with valve tower in the valve Room.Equipment is numerous in the valve Room and each equipment room
Coupled relationship is complicated, and in the extra-high voltage converter valve Room, the huge horizontal displacement of internal valve tower may cause the exhausted of electrical equipment in the valve Room
Edge problem, jeopardizes the safe operation of whole current conversion station.Due to having reliable technology or not at present ultra-high voltage converter station can be allowed accurate
Really inerrably cut off the electricity supply in time before seismic wave arrival, so must assure that converter valve does not produce excessive position under geological process
Move to prevent from flashover occur in the valve Room.Further, since suspension insulator slenderness ratio is excessive, it has under Vertical Earthquake Loads
Compressive buckling may occur, so as to cause valve tower vertically producing instantaneous percussion, produce huge vertical acceleration to ring
Should and stress response.
In specification, the suspention class formation in addition to converter valve be required by limited with ground rollering junction its level to
Displacement.But for converter valve at present for not unifying temporarily to limit its horizontal displacement with effective scheme.Sweden ABB is public
Department once limited the horizontal displacement of low-voltage-grade converter valve and achieved successfully using bottom shore formula hydraulic damper apparatus.But
Be when voltage class lifting to 800kV when, the insulation distance needed for converter valve is also improved therewith, when converter valve bottom from the ground away from
From it is larger when, the limit effect of column support type hydraulic damper weakens significantly, pillar under earthquake security also be subject to prestige
The side of body.So for extra-high voltage converter valve tower, this vibration control scheme is hard to work.
It is a kind of simple and effective method that can reduce its horizontal displacement by suspension kind equipment and ground rollering junction.It is various not
With in the converter valve tower of structure type, the bottom radome of part valve tower does not have the stress frame of completely obscured converter valve, makes
Converter valve bottom and ground rollering junction must be possibly realized.And according to prior art, the stray electrical after converter valve tower and ground rollering junction
Appearance problem can also be resolved.
But used as accurate electrical equipment, the various kinds of equipment on converter valve tower cannot bear excessive acceleration and stress.
If converter valve directly is passed through into counterbracing form insulator and ground rollering junction, under horizontal earthquake action, have one end exhausted
Edge meeting compressive buckling, so as to produce horizontal direction temporary impact, causes huge horizontal acceleration.If converter valve is directly led to
Cross vertical tensioning insulator to be connected with valve tower, then huge pulling force can be produced in suspension insulator, may be by valve hall
Steel roof truss draw across.When converter valve hangs on valve Room roof, fundamental frequency and the valve Room fundamental frequency of converter valve have a long way to go, so low
The first order mode upper valve Room will not resonate with valve tower.If directly the valve Room is connected with ground, the fundamental frequency of valve tower is inherently
Raise, may cause the fundamental frequency of valve tower close with valve Room fundamental frequency if coupling stiffness is excessive and produce resonance.So only will
Converter valve tower is directly connected with ground cannot also solve the problems, such as the vibration control of converter valve tower.
The content of the invention
The purpose of the present invention is exactly to provide a kind of simple structure for the defect for overcoming above-mentioned prior art to exist, be easy to
Installation, limit effect and the good vibration control apparatus for converter valve of vibration control effect.
The purpose of the present invention can be achieved through the following technical solutions：A kind of vibration control apparatus for converter valve,
The top of the converter valve is fixed on the valve Room by some suspension insulators, and the bottom of converter valve passes through some strain insulators
With the oblique drawknot in ground, each described strain insulator is connected by damping unit with ground, and the damping unit includes upper company
Fishplate bar, lower connecting plate and some springs and damper that are arranged between two pieces of connecting plates, the upper junction plate is by upper double
It is connected with the lower end of the strain insulator to hinge, the lower connecting plate is connected by lower bilateral hinge with ground.
Due to extra-high voltage converter valve tower under geological process there may be huge horizontal displacement, the present invention is proposed using resistance to
Insulator is opened by converter valve bottom and the limit method of ground rollering junction, while in strain insulator and ground junction, setting resistance
Buddhist nun's device simultaneously applies pretension, to limit its horizontal displacement.Strain insulator is used for the electric insulation of converter valve, and is in ground
Certain inclination angle.Damping unit is used to provide the damping force opposite with the valve tower direction of motion, and will be damped by strain insulator
Power is delivered on valve tower, for limit levels displacement.Because the strain insulator of bottom belongs to slim-lined construction, once it is pressurized itself
Can produce flexing and cannot bearing load, so need to ensure that strain insulator maintains tension state to transmit damping force, therefore
Need to maintain pretension by spring.
Described spring symmetrically is arranged on the periphery of damper, and what multiple springs were produced makes a concerted effort and the damper
Center superposition.
The number of described spring is 2,4,6 or 8.
Damper is preferably hydraulic damper.
In said apparatus, for different converter valves, required oblique pull distance, damper damped coefficient, spring rate and
Pretension size is all different, and specific calculating process is as follows：
The allowed band of oblique pull distance is determined according to the layout of equipment in the valve Room, is produced according to existing damper product and spring
Product determine damper damped coefficient allowed band, and the quality and suspension insulator intensity according to valve tower determine that pretension allows model
Enclose.According to four undetermined parameter allowed bands, permutation and combination goes out multiple parameters combination.
By the valve Room-valve tower structure system it is discrete be Level Multiple Degree of Freedom Structures system, and according to the quality and stiffness parameters of system
Set up the system with several degrees of freedom equation of motion.
A plurality of seismic wave is input into the system carries out time-history analysis computing, and export structure displacement and the result such as stress.
Result to all parameter combinations is analyzed, and the selection wherein less parameter combination of displacement and peak stress is used as the vibration
The optimal parameter combination of control system.
The center of described lower connecting plate is provided with flower basket bolt, and the flower basket bolt is connected by lower bilateral hinge and ground
Connect.
Ground is provided with bearing, and the built-in fitting that the bearing includes the base of wedge shape and is fixed on base is described pre-
Embedded part is hinged by lower bilateral hinge with the flower basket bolt.Flower basket bolt is used to adjust setting height(from bottom) when installing, so as to each
It is uniform in tensioning rod member to apply pretension.Meanwhile, flower basket bolt can be used for finely tuning pretension size, in case in each tensioning rod member
Pretension difference is excessive.
The base is identical with vertical direction angulation with ground angulation and strain insulator.
The quantity of described suspension insulator is identical with the quantity of strain insulator so that power transmission is direct, in case in valve tower
Inside produces excessive stresses., can be directly delivered to the power of upper strata suspension insulator on strain insulator, such as by such setting
Both fruit quantity, then the girder of valve tower will bear a very big span centre power.
Compared with prior art, beneficial effects of the present invention are embodied in following several respects：
(1) horizontal displacement of valve tower is limited by damper, strain insulator flexing is prevented by the pretension of spring, protected
The limit effect and vibration control effect of converter valve are demonstrate,proved, and does not influence the normal electric function of equipment, be particularly suited for earthquake high
The extra-high voltage converter valve tower of intensity area；
(2) setting flower basket bolt is used to adjust setting height(from bottom) when installing, and pre- is applied so as to uniform in each tensioning rod member
Power, it is easy for installation.
Brief description of the drawings
Fig. 1 is schematic view of the mounting position of the present invention on converter valve tower；
Fig. 2 is schematic structural view of the invention；
Fig. 3 is the structural representation of ground upper bracket；
Fig. 4 is the 4DOF valve Room-valve tower theoretical analysis model schematic diagram.
Wherein, 1 is converter valve, and 2 is strain insulator, and 3 is damping unit, and 4 is bearing, and 5 is oblique pull distance, and 6 is the valve Room,
7 is suspension insulator, and 8 is upper bilateral hinge, and 9 is upper junction plate, and 10 is hydraulic damper, and 11 is spring, and 12 is lower connecting plate,
13 is flower basket bolt, and 14 is lower bilateral hinge, and 15 is built-in fitting, and 16 is base, and 17 is valve Room equivalent point, and 18 is suspension insulator
Equivalent rod member, 19 is converter valve equivalent point, and 20 is the equivalent rod member of strain insulator.
Specific embodiment
Embodiments of the invention are elaborated below, the present embodiment is carried out under premised on technical solution of the present invention
Implement, give detailed implementation method and specific operating process, but protection scope of the present invention is not limited to following implementations
Example.
Embodiment 1
A kind of vibration control apparatus for converter valve, if its installation site is as shown in figure 1, the top of converter valve 1 passes through
Dry suspension insulator 7 is fixed on the valve Room 6, and the bottom of converter valve 1 is by some strain insulators 2 and the oblique drawknot in ground, tool
There is an oblique pull distance 5, each strain insulator 2 is connected by damping unit 3 with the bearing 4 on ground.Suspension insulator 7
Quantity it is identical with the quantity of strain insulator 2, in case producing excessive stresses inside valve tower.
Wherein, the structure of damping unit is as shown in Fig. 2 damping unit includes upper junction plate 9, lower connecting plate 12 and sets
The two ends of some springs 11 and hydraulic damper 10 between two pieces of connecting plates, spring 11 and hydraulic damper 10 are respectively welded
On upper junction plate 9 and lower connecting plate 12, upper junction plate 9 is connected by upper bilateral hinge 8 with the lower end of strain insulator 2, under
Connecting plate 12 is connected by lower bilateral hinge 14 with ground.
Spring 11 symmetrically is arranged on the periphery of damper, the center made a concerted effort with damper that multiple springs 11 are produced
Overlap.
The center of lower connecting plate 12 is provided with flower basket bolt 13, and flower basket bolt 13 is connected by lower bilateral hinge 14 with ground.
Flower basket bolt 13 is used to adjust setting height(from bottom) when installing, and pretension is applied so as to uniform in each tensioning rod member.Flower basket bolt 13
Can be used for finely tuning pretension size, in case pretension difference is excessive in each tensioning rod member.
Ground is provided with bearing, the built-in fitting 15 that bearing includes the base 16 of wedge shape and is fixed on base 16, its knot
Structure is as shown in figure 3, built-in fitting 15 is hinged by lower bilateral hinge and flower basket bolt.
Base 16 is identical with vertical direction angulation with ground angulation and strain insulator 2.
The selected Bit andits control requirement of electric insulation requirement and electrical equipment safety requirements according to converter valve, and according to the valve Room
Interior converter valve and the deployment scenarios of miscellaneous equipment set the oblique pull distance of vibration control apparatus.Intensity and the change of current according to the valve Room
The maximum pull that can be allowed in the mechanical strength setting suspension insulator of valve.
By the valve Room-valve tower structure system it is discrete be 4DOF structural system, as shown in Figure 4.The valve Room is equivalent to two freely
All suspension insulators are equivalent to equivalent rod member 18 by degree equivalent mass point 17, and change of current valve body is equivalent into quality point 19, will
Strain insulator is equivalent to two equivalent rod members 20.Quality and stiffness parameters according to system set up system with several degrees of freedom motion side
Journey, wherein needing to consider geometrical non-linearity.
A plurality of seismic wave is input into the system carries out time-history analysis computing, and export structure displacement and the result such as stress.
Result to all parameter combinations is analyzed, and the parameter combination of pressure occurs in rejecting strain insulator, selects
Wherein the less parameter combination of displacement and peak stress is combined as the optimal parameter of the vibration control system.
The multigroup parameter combination for meeting limit value requirement that will be obtained in theoretical model is input to the valve Room-converter valve numerical simulation
In model, dynamic respond and suspension insulator tension force of the overall structure under three dimensional earthquake ripple are calculated, selected from all results
Displacement reaches the parameter combination of tension force minimum in requirement and suspension insulator.More than calculate and can determine spring in damping unit
The pretension of rigidity, hydraulic damper damped coefficient and strain insulator.
Existing spring and hydraulic damping are selected according to the rigidity of spring, hydraulic damper damped coefficient in damping unit
Device.Size according to tension force in the strain insulator of bottom from the satisfactory insulator of intensity, it is two-way be hinged, flower basket bolt and
Built-in fitting.
During implementation, poured on ground in the valve Room according to oblique pull distance and build reinforced concrete footing, needed in base
Enough reinforcing bar resistance pretensions are set.With damping unit be connected strain insulator first by scene, in valve hall steel roof truss
On suspended converter valve in midair after, strain insulator is connected with converter valve.Apply pretension, this mistake in the lower connecting plate of damping unit
Spring and hydraulic damper will produce obvious deformation in journey.Need to control rate of application, and each vibration control during applying
Device needs to apply pretension simultaneously.Pretension apply finish after, adjust flower basket bolt length so that lower bilateral hinge with it is pre-buried
After part can be reliably connected, pretension is discharged.The pretension for applying can be finely adjusted by adjusting flower basket bolt afterwards, to protect
Card tension force reaches the balancing tension in desired value and each vibration control apparatus.
Claims (7)
1. a kind of vibration control apparatus for converter valve, the top of the converter valve (1) is solid by some suspension insulators (7)
It is scheduled on the valve Room (6), it is characterised in that the bottom of the converter valve (1) is by some strain insulators (2) and the oblique drawing in ground
Knot, each described strain insulator (2) is connected by damping unit (3) with ground, and the damping unit (3) is including upper junction plate
(9), lower connecting plate (12) and some springs (11) and damper (10) that are arranged between two pieces of connecting plates, the upper connection
Plate (9) is connected by upper bilateral hinge (8) with the lower end of the strain insulator (2), and the lower connecting plate (12) is by lower pair
It is connected with ground to hinge (14).
2. a kind of vibration control apparatus for converter valve according to claim 1, it is characterised in that described spring
(11) periphery of damper (10) is arranged on symmetrically, and what multiple springs (11) produced makes a concerted effort and the damper (10)
Center superposition.
3. a kind of vibration control apparatus for converter valve according to claim 1, it is characterised in that described spring
(11) number is 2,4,6 or 8.
4. a kind of vibration control apparatus for converter valve according to claim 1, it is characterised in that described lower connection
The center of plate (12) is provided with flower basket bolt (13), and the flower basket bolt (13) is connected by lower bilateral hinge (14) with ground.
5. a kind of vibration control apparatus for converter valve according to claim 4, it is characterised in that ground is provided with branch
Seat (4), the bearing (4) includes wedge-shaped base (16) and the built-in fitting (15) being fixed on base (16), described pre-buried
Part (15) is hinged by lower bilateral hinge (14) with the flower basket bolt (13).
6. a kind of vibration control apparatus for converter valve according to claim 5, it is characterised in that the base (16)
It is identical with vertical direction angulation with ground angulation and strain insulator (2).
7. a kind of vibration control apparatus for converter valve according to claim 1, it is characterised in that described suspention is exhausted
The quantity of edge (7) is identical with the quantity of strain insulator (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611071038.3A CN106786032B (en) | 2016-11-29 | 2016-11-29 | A kind of vibration control apparatus for converter valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611071038.3A CN106786032B (en) | 2016-11-29 | 2016-11-29 | A kind of vibration control apparatus for converter valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106786032A true CN106786032A (en) | 2017-05-31 |
| CN106786032B CN106786032B (en) | 2018-07-03 |
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ID=58905301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611071038.3A Expired - Fee Related CN106786032B (en) | 2016-11-29 | 2016-11-29 | A kind of vibration control apparatus for converter valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106786032B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107800272A (en) * | 2017-10-18 | 2018-03-13 | 许继电气股份有限公司 | Brace type converter valve valve tower |
| CN108974382A (en) * | 2018-09-11 | 2018-12-11 | 长春工业大学 | It is a kind of based on magnetorheological second level vibration isolation holder |
| CN109085075A (en) * | 2018-08-13 | 2018-12-25 | 中国电力科学研究院有限公司 | A kind of big degree of disturbing buckling test device of composite insulator |
| CN109921354A (en) * | 2019-03-29 | 2019-06-21 | 国网河南省电力公司经济技术研究院 | A kind of damp connection device for indoor substation suspention GIS casing |
| CN110312386A (en) * | 2019-06-11 | 2019-10-08 | 和信精密科技（吴江）有限公司 | A kind of cabinet that anti-deformation is excellent |
| CN110762156A (en) * | 2019-09-11 | 2020-02-07 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Pretension damping suspension vibration damper for converter valve tower |
| CN111439344A (en) * | 2020-04-21 | 2020-07-24 | 西安西电电力系统有限公司 | Converter valve fixing method based on marine transportation and converter valve transportation system |
| CN112260197A (en) * | 2020-09-17 | 2021-01-22 | 同济大学 | Hydraulic damper-based connecting device for power transmission tower and insulator |
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| JPS57160107A (en) * | 1981-03-27 | 1982-10-02 | Mitsubishi Electric Corp | Bushing attaching device |
| CN204099485U (en) * | 2014-06-16 | 2015-01-14 | 同济大学 | The vertical seismic isolation device of a kind of feedthrough |
| CN104953858A (en) * | 2015-06-26 | 2015-09-30 | 许继电气股份有限公司 | Converter valve tower |
| JP2016003897A (en) * | 2014-06-14 | 2016-01-12 | 株式会社テイエルブイ | Process system component vibration detection device |
| CN105406374A (en) * | 2015-11-27 | 2016-03-16 | 同济大学 | Seismic substation support post equipment connecting device capable of adjusting installation position |
-
2016
- 2016-11-29 CN CN201611071038.3A patent/CN106786032B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57160107A (en) * | 1981-03-27 | 1982-10-02 | Mitsubishi Electric Corp | Bushing attaching device |
| JP2016003897A (en) * | 2014-06-14 | 2016-01-12 | 株式会社テイエルブイ | Process system component vibration detection device |
| CN204099485U (en) * | 2014-06-16 | 2015-01-14 | 同济大学 | The vertical seismic isolation device of a kind of feedthrough |
| CN104953858A (en) * | 2015-06-26 | 2015-09-30 | 许继电气股份有限公司 | Converter valve tower |
| CN105406374A (en) * | 2015-11-27 | 2016-03-16 | 同济大学 | Seismic substation support post equipment connecting device capable of adjusting installation position |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107800272A (en) * | 2017-10-18 | 2018-03-13 | 许继电气股份有限公司 | Brace type converter valve valve tower |
| CN109085075A (en) * | 2018-08-13 | 2018-12-25 | 中国电力科学研究院有限公司 | A kind of big degree of disturbing buckling test device of composite insulator |
| CN108974382A (en) * | 2018-09-11 | 2018-12-11 | 长春工业大学 | It is a kind of based on magnetorheological second level vibration isolation holder |
| CN108974382B (en) * | 2018-09-11 | 2023-09-12 | 长春工业大学 | Two-stage vibration isolation holder based on magnetorheological |
| CN109921354A (en) * | 2019-03-29 | 2019-06-21 | 国网河南省电力公司经济技术研究院 | A kind of damp connection device for indoor substation suspention GIS casing |
| CN110312386A (en) * | 2019-06-11 | 2019-10-08 | 和信精密科技（吴江）有限公司 | A kind of cabinet that anti-deformation is excellent |
| CN110762156A (en) * | 2019-09-11 | 2020-02-07 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Pretension damping suspension vibration damper for converter valve tower |
| CN111439344A (en) * | 2020-04-21 | 2020-07-24 | 西安西电电力系统有限公司 | Converter valve fixing method based on marine transportation and converter valve transportation system |
| CN112260197A (en) * | 2020-09-17 | 2021-01-22 | 同济大学 | Hydraulic damper-based connecting device for power transmission tower and insulator |
| CN112260197B (en) * | 2020-09-17 | 2021-09-07 | 同济大学 | Hydraulic damper-based connecting device for power transmission tower and insulator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106786032B (en) | 2018-07-03 |
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Granted publication date: 20180703 Termination date: 20201129 |