CN206370685U - A kind of current conversion station levelling device - Google Patents
A kind of current conversion station levelling device Download PDFInfo
- Publication number
- CN206370685U CN206370685U CN201621491381.9U CN201621491381U CN206370685U CN 206370685 U CN206370685 U CN 206370685U CN 201621491381 U CN201621491381 U CN 201621491381U CN 206370685 U CN206370685 U CN 206370685U
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- capacitor
- bridge arm
- electric capacity
- arm electric
- stand
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
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Abstract
The utility model discloses a kind of current conversion station levelling device.It includes capacitor pylon, if described capacitor pylon is provided with dry condenser stand, described capacitor stand is laid from above to be sequentially overlapped on capacitor pylon, porcelain vase is provided between two neighboring capacitor stand, described capacitor stand is provided with two bridge arm electric capacity in parallel, respectively left bridge arm electric capacity and right bridge arm electric capacity, described bridge arm electric capacity are provided with equipotential line, and described equipotential line is connected with porcelain vase.The beneficial effects of the utility model are：The annexation between equipotential line and porcelain vase can be made full use of, makes the actual capacitance of two bridge arm electric capacity in parallel essentially identical, it is ensured that the reliability of relay protection, reduces the workload of field adjustable, also shorten debugging cycle.
Description
Technical field
The utility model is related to electric reactive compensating correlative technology field, refers in particular to a kind of current conversion station levelling device.
Background technology
At present, current conversion station uses Bridge differential current protection with capacitor protection in ac filter capacitor bank, in order to ensure relay is protected
The reliability (not occurring misoperation) of shield, it is desirable to which (the ratio between each bridge arm electric capacity is less than each bridge arm capacitance deviation very little of capacitor bank
1.0004), therefore to the capacitance deviation of capacitor bank have higher requirements.
Required in order to ensure each bridge arm capacity ratio of capacitor bank is met, each producer generally uses following methods：
1st, strict control single capacitor capacitance deviation (- 1.8-+1.8%)；
2nd, influence of the stray capacitance capacitance deviation arm need to be considered.
3rd, on-site carries out installation workload and the debugging matching somebody with somebody gentle part installment work, reduce scene of capacitor.
4th, initial unbalance electric current such as occur (obtaining 1/4 times more than alarming value) bigger than normal at scene, need to adjust the separate unit of each bridge arm
Capacitor, bringing very big workload to scene, (because capacitor installation site is high, much more than 10 meters, capacitor, which is changed, to be needed to use
The equipment such as crane).
Utility model content
The utility model is above-mentioned to reduce workload and contracting there is provided one kind to overcome the shortcomings of to exist in the prior art
The current conversion station levelling device of short debugging cycle.
To achieve these goals, the utility model uses following technical scheme：
A kind of current conversion station levelling device, including capacitor pylon, if described capacitor pylon is provided with dry condenser platform
Frame, described capacitor stand is laid from above to be sequentially overlapped on capacitor pylon, between two neighboring capacitor stand
Provided with porcelain vase, described capacitor stand is provided with two bridge arm electric capacity in parallel, respectively left bridge arm electric capacity and right bridge arm electricity
Hold, described bridge arm electric capacity is provided with equipotential line, and described equipotential line is connected with porcelain vase.
When two bridge arm electric capacity in parallel have deviation and have impact on the reliability of relay protection, equipotential can be made full use of
Annexation between line and porcelain vase so that the actual capacitance of two bridge arm electric capacity in parallel is essentially identical so that ensure after
The reliability of electric protection, it is not necessary to carry out the replacing of capacitor, so as to reduce the workload of field adjustable, also shortens debugging
Cycle.
Preferably, the porcelain vase composition one between two neighboring capacitor stand and two neighboring capacitor stand is miscellaneous
Spurious capacitance, described equipotential line is connected with stray capacitance.The stray capacitance bridge arm electric capacity in parallel to two all has an impact, due to electricity
The number of plies of container stand is more, and the stray capacitance bridge arm capacitive effect in parallel to two is essentially the same.When two bridge arms in parallel
When electric capacity has deviation, the direction of adjustment equipotential line that can be suitably changes the shadow of the stray capacitance bridge arm electric capacity in parallel to two
Ring, meet two bridge arm electric capacity in parallel and require.
Preferably, described bridge arm electric capacity includes some single capacitors, described single capacitor series connection is described
Equipotential line is located at the middle position of bridge arm electric capacity.The quantity of single capacitor is even number, and equipotential line is in position in the middle,
It is convenient that bridge arm electric capacity is adjusted.
Preferably, described porcelain vase be respectively placed on the left and right ends of capacitor stand, the left bridge arm electric capacity etc.
Bit line is connected with being placed in the porcelain vase of capacitor stand left end, and the equipotential line on the right bridge arm electric capacity is right with being placed in capacitor stand
The porcelain vase connection at end.Changed by the left and right directions of equipotential line, thus it is possible to vary the numerical value of left bridge arm electric capacity and right bridge arm electric capacity, with
Meet the demand of leveling.
The beneficial effects of the utility model are：The annexation between equipotential line and porcelain vase can be made full use of, makes two simultaneously
The actual capacitance of the bridge arm electric capacity of connection is essentially identical, it is ensured that the reliability of relay protection, reduces the workload of field adjustable,
Shorten debugging cycle.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is circuit theory diagrams of the present utility model.
In figure：1. capacitor pylon, 2. porcelain vases, 3. capacitor stands, 4. left bridge arm electric capacity, 5. right bridge arm electric capacity, 6. etc.
Bit line, 7. single capacitors.
Embodiment
The utility model is further described with reference to the accompanying drawings and detailed description.
As shown in Figure 1, Figure 2 in described embodiment, a kind of current conversion station levelling device, including capacitor pylon 1, capacitor pylon
If 1 is provided with dry condenser stand 3, capacitor stand 3 is laid from above to be sequentially overlapped on capacitor pylon 1, adjacent two
Porcelain vase 2 is provided between individual capacitor stand 3, capacitor stand 3 is provided with two bridge arm electric capacity in parallel, respectively left bridge arm electricity
Hold 4 and right bridge arm electric capacity 5, bridge arm electric capacity is provided with equipotential line 6, and equipotential line 6 is connected with porcelain vase 2.Two neighboring capacitor stand 3
And the porcelain vase 2 between two neighboring capacitor stand 3 constitutes a stray capacitance, equipotential line 6 is connected with stray capacitance.Bridge arm
Electric capacity includes some single capacitors 7, and single capacitor 7 is connected, and equipotential line 6 is located at the middle position of bridge arm electric capacity.Porcelain vase 2
The equipotential line 6 being respectively placed on the left and right ends of capacitor stand 3, left bridge arm electric capacity 4 and the porcelain for being placed in the left end of capacitor stand 3
Bottle 2 is connected, and the equipotential line 6 on right bridge arm electric capacity 5 is connected with being placed in the porcelain vase 2 of the right-hand member of capacitor stand 3.
Under normal circumstances, two neighboring capacitor stand 3 is equivalent to the two poles of the earth of stray capacitance, two neighboring capacitor stand
Distance of the height of porcelain vase 2 equivalent to stray capacitance two-plate between 3, the wherein direct-to-ground capacitance of capacitor stand 3 is put aside.It is miscellaneous
The spurious capacitance bridge arm electric capacity in parallel to two all has an impact, because the number of plies is more, the stray capacitance bridge arm electric capacity in parallel to two
Influence is essentially the same, is so not in the deviation for causing bridge arm electric capacity due to stray capacitance skewness.When whole electric capacity
Device group is due to trim or other reasonses, and each bridge arm electric capacity in capacitor bank has deviation and have impact on the reliability of relay protection
When, the characteristics of commissioning staff can be distributed using stray capacitance, for having deviation between left bridge arm electric capacity 4 and right bridge arm electric capacity 5
This case, the direction of adjustment equipotential line 6 suitably changes stray capacitance to left bridge arm electric capacity 4 or the shadow of right bridge arm electric capacity 5
Ring, it is intended that influence of the stray capacitance to left bridge arm electric capacity 4 or right bridge arm electric capacity 5 is inconsistent, so that the left He of bridge arm electric capacity 4
Actual capacitance between right bridge arm electric capacity 5 is essentially identical, meets the requirement of current leveling, it is ensured that the reliability of relay protection.
Claims (4)
1. a kind of current conversion station levelling device, it is characterized in that, including capacitor pylon (1), described capacitor pylon (1) is provided with
If dry condenser stand (3), described capacitor stand (3) is laid from above to be sequentially overlapped on capacitor pylon (1), phase
Porcelain vase (2) is provided between adjacent two capacitor stands (3), described capacitor stand (3) is provided with two bridge arm electricity in parallel
Hold, respectively left bridge arm electric capacity (4) and right bridge arm electric capacity (5), described bridge arm electric capacity is described etc. provided with equipotential line (6)
Bit line (6) is connected with porcelain vase (2).
2. a kind of current conversion station levelling device according to claim 1, it is characterized in that, two neighboring capacitor stand (3) with
And the porcelain vase (2) between two neighboring capacitor stand (3) constitutes a stray capacitance, described equipotential line (6) and stray electrical
Hold connection.
3. a kind of current conversion station levelling device according to claim 1 or 2, it is characterized in that, if described bridge arm electric capacity includes
Dry single capacitor (7), described single capacitor (7) series connection, described equipotential line (6) is located at the centre position of bridge arm electric capacity
Place.
4. a kind of current conversion station levelling device according to claim 1 or 2, it is characterized in that, described porcelain vase (2) is respectively placed in
Equipotential line (6) on the left and right ends of capacitor stand (3), the left bridge arm electric capacity (4) is with being placed in capacitor stand (3) left end
Porcelain vase (2) connection, equipotential line (6) on the right bridge arm electric capacity (5) and the porcelain vase (2) for being placed in capacitor stand (3) right-hand member
Connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621491381.9U CN206370685U (en) | 2016-12-30 | 2016-12-30 | A kind of current conversion station levelling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621491381.9U CN206370685U (en) | 2016-12-30 | 2016-12-30 | A kind of current conversion station levelling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206370685U true CN206370685U (en) | 2017-08-01 |
Family
ID=59390307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621491381.9U Active CN206370685U (en) | 2016-12-30 | 2016-12-30 | A kind of current conversion station levelling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206370685U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112154524A (en) * | 2018-05-17 | 2020-12-29 | 西门子股份公司 | Capacitor bank |
-
2016
- 2016-12-30 CN CN201621491381.9U patent/CN206370685U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112154524A (en) * | 2018-05-17 | 2020-12-29 | 西门子股份公司 | Capacitor bank |
| US11506724B2 (en) * | 2018-05-17 | 2022-11-22 | Siemens Aktiengesellschaft | Method of monitoring a capacitor bank for failures |
| CN112154524B (en) * | 2018-05-17 | 2023-01-20 | 西门子能源全球有限公司 | Capacitor bank |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210308 Address after: 314100 Building 1, NO.666 Nanxing Road, Weitang street, Jiashan County, Jiaxing City, Zhejiang Province Patentee after: Yongjin capacitor Co.,Ltd. Address before: No. 508, Dongye Road, Dongjing Town, Songjiang District, Shanghai, 201619 Patentee before: SHANGHAI YONGJIN ELECTRIC GROUP Co.,Ltd. |
|
| TR01 | Transfer of patent right |