CN209298707U - A kind of flexible direct current converter station quick-switching spare phase transformer arrangement structure - Google Patents
A kind of flexible direct current converter station quick-switching spare phase transformer arrangement structure Download PDFInfo
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- CN209298707U CN209298707U CN201822092532.9U CN201822092532U CN209298707U CN 209298707 U CN209298707 U CN 209298707U CN 201822092532 U CN201822092532 U CN 201822092532U CN 209298707 U CN209298707 U CN 209298707U
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Abstract
A kind of flexible direct current converter station quick-switching spare phase transformer arrangement structure, it specifically includes that high-voltage tube mother, middle pressure pipe mother, three-phase neutral point pipe mother, spare phase neutral point pipe mother, high voltage side of transformer casing, medium voltage side casing, low-pressure side casing and neutral bushing；The high-voltage tube is female, middle pressure pipe is female, three-phase neutral point pipe is female, spare phase neutral point pipe mother be switch for failure phase with spare phase it is single-phase；Its method includes: a) to remove all leads of failure phase transformer, and failure is mutually exited；B) failure phase high pressure inlet wire is directly connected to spare phase transformer via high voltage bus simultaneously, spare phase medium voltage side is connected to cause via another bus and hinders corresponding medium voltage side outlet；C) spare phase low-pressure side is connected to neighbouring low-voltage side outlet via low-voltage bus bar；D) failure is mutually exited is completed at the same time with spare phase switching, powers on recovery and works normally；The utility model substantially reduces working hour, improves economic benefit.
Description
Technical field
The utility model relates to a kind of flexible direct current converter station quick-switching spare phase transformer arrangement structures；Belong to
Project of transmitting and converting electricity design and construction technical field.
Background technique
Flexible DC transmission technology is a kind of emerging technology of transmission of electricity in direct current transportation field with wide application prospect, and
Flexible direct current converter station is the key component of flexible HVDC transmission system, plays the critical function of alternating current-direct current conversion, by system
The concrete function of middle performance can be divided into converting plant and Inverter Station.
Capital equipment includes converter power transformer, converter valve, reactor, arrester, mutual inductor, earthing or grounding means, starting in standing
Device etc..And converter power transformer and converter valve are two big major parts of converter station.Since converter station has high voltage, large capacity
The characteristics of, therefore transformer is often that split-phase is independently installed, and inevitably will appear certain phase transformer failure in operation work,
Spare phase transformer should be set thus.
Traditional spare phase operation/cutting method needs first to remove failure phase connection, then failure phase transformer is exited, then
Spare phase transformer is moved into, then by spare phase access system, can just power on and resume work.This method needs to wait failure phase shift
Spare phase could be moved into after out, and spare phase converter power transformer is often placed on remotely, it is very inconvenient, expend a large amount of works
When, system failure time is extended, economy is poor.
Summary of the invention
The purpose of the utility model is to overcome the shortcomings of the prior art, and provide it is a kind of it is improved, can substantially contract
It when casual labourer, increases economic efficiency, improves spare phase switching efficiency, there is the flexible direct current converter station compared with high universalizable and flexibility
Quick-switching spare phase transformer arrangement structure and method.
The purpose of this utility model is completed by following technical solution, a kind of flexible direct current converter station quick-switching
Spare phase transformer arrangement structure, it specifically includes that high-voltage tube is female, middle pressure pipe is female, three-phase neutral point pipe is female, spare phase neutral point
Pipe mother, high voltage side of transformer casing, medium voltage side casing, low-pressure side casing and neutral bushing；The high-voltage tube is female, middle pressure pipe
It is female, three-phase neutral point pipe is female, spare phase neutral point pipe mother be switch for failure phase with spare phase it is single-phase.
As preferred: the high-voltage tube mother connects the high-pressure side casing of high pressure inlet wire and spare phase, and medium pressure pipe is female
Spare phase medium voltage side casing and middle extrusion line are connected, three-phase neutral point pipe mother and spare phase neutral point pipe mother are separately connected each phase transformation
Depressor winding neutral point.
The failure is mutually exited can carry out simultaneously with spare phase switching, and spare phase device for transformer itself does not have to remove
Fortune only need to carry out switching arrangement by lead wire.The high-voltage tube mother is described for connecting high pressure inlet wire and spare phase high-pressure side
Middle pressure pipe mother is used for three-phase coil when Y connection and connects for connecting spare phase medium voltage side and middle extrusion line, the neutral point pipe mother
To same neutral point, the low-voltage tube mother is for connecting spare phase low-pressure side and low-pressure line-outgoing.Above method realization is not being moved
Switching arrangement is carried out under the premise of spare phase device, and this process can be exited with failure phase transformer and be carried out simultaneously, be saved
In a large amount of working hours, improve fault removal efficiency.
A method of utilizing the flexible direct current converter station quick-switching spare phase transformer arrangement structure, the side
Method includes the following steps:
A) all leads of failure phase transformer are removed, failure is mutually exited；
B) failure phase high pressure inlet wire is directly connected to spare phase transformer, spare phase medium voltage side via high voltage bus simultaneously
Cause, which is connected to, via another bus hinders corresponding medium voltage side outlet；
C) spare phase low-pressure side is connected to neighbouring low-voltage side outlet via low-voltage bus bar；
D) failure is mutually exited is completed at the same time with spare phase switching, powers on recovery and works normally.
The beneficial effects of the utility model are:
(1) compared with traditional scheme, the failure that method for arranging described in the utility model can carry out simultaneously mutually exit with it is spare
The relevant operation of phase switching saves a large amount of working hours；
(2) compared with traditional scheme, method for arranging described in the utility model avoids spare phase conversion current transformer device
It is mobile, extensive work is transformed to conducting wire bridging, only failure need to be exited and mutually be overhauled, the operation for reducing troubleshooting is difficult
Degree；
(3) compared with traditional scheme, method for arranging described in the utility model, after the completion of failure is mutually overhauled after being similarly
Again investment saves working hour and cost, remarkable in economical benefits.
Detailed description of the invention
Fig. 1 is a kind of single-phase transformer and spare phase wiring state schematic diagram when the utility model works normally.
Fig. 2 is another kind single-phase transformer and spare phase wiring state schematic diagram when the utility model works normally.
Fig. 3 is a kind of status diagram of the utility model quick-switching method.
Fig. 4 is another status diagram of the utility model quick-switching method.
Fig. 5 is single-phase transformer and spare transformer wiring plan view when the utility model works normally.
Specific embodiment
Be described in detail below in conjunction with attached drawing to the utility model: Fig. 1, shown in 2, a kind of flexible direct current converter station is fast
Fast switching spare phase transformer arrangement structure, it specifically includes that high-voltage tube mother 1, middle pressure pipe mother 2, and three-phase neutral point pipe mother 3 is standby
With phase neutral point pipe mother 4, high voltage side of transformer casing 6, medium voltage side casing 9, low-pressure side casing 8, neutral bushing 7.
The high-voltage tube mother 1 connects the high-pressure side casing 6 of high pressure inlet wire and spare phase, and 2 connection of medium pressure pipe mother is spare
Phase medium voltage side casing and middle extrusion line 5, the neutral point pipe mother 3,4 connect each phase transformer winding neutral point, female with upper tube
It has connected intact.
The quick-switching method refers to that as shown in Figure 3,4, when certain phase fault, high pressure inlet wire directly passes through high-voltage tube mother 1
It is connected to spare phase, and the medium voltage side of spare phase is linked back the medium voltage side outlet 5 of corresponding phase by middle pressure pipe mother 2, the low pressure of spare phase
Side is connected directly to neighbouring low-pressure line-outgoing (low-pressure side uses △ connection, and specific outlet connection type is depending on failure phase).It adopts
The throwing of spare phase can be carried out while exiting failure phase under the premise of not moving spare phase transformer in this way
It cuts.
As shown in Fig. 5 plan view, the single-phase change of current of the total 6+1 platform of whole station becomes, i.e. whole station work becomes 6, separately set 1 it is standby
With.When normal operation, spare phase transformer is placed in the work change of current and becomes center, and each phase converter power transformer divides column spare phase in linear type
Two sides.
A kind of spare phase transformer cloth of flexible direct current converter station quick-switching carried out using above equipment and method for arranging
Method is set, which includes the following steps:
A) all leads of failure phase transformer are removed, failure is mutually exited；
B) failure phase high pressure inlet wire is directly connected to spare phase transformer, spare phase medium voltage side via high voltage bus simultaneously
Cause, which is connected to, via another bus hinders corresponding medium voltage side outlet；
C) spare phase low-pressure side is connected to neighbouring low-voltage side outlet via low-voltage bus bar；
D) failure is mutually exited is completed at the same time with spare phase switching, powers on recovery and works normally.
Embodiment:
Flexible direct current converter station quick-switching spare phase transformer arrangement method described in the utility model, is conducive to shorten
Working hour improves fault removal efficiency；Spare phase and failure establish connection by pipe mother and avoid transformation at a distance of from farther out
The movement of device device itself；Originally be connected to failure phase bushing high pressure inlet wire can be directly connected across to high-voltage tube mother to
It is connected to spare phase high-pressure side, similarly medium voltage side can use middle pressure pipe mother and take back middle extrusion line corresponding to failure, be used for
It is connected to valve hall；Spare phase low-pressure side is then connected directly to neighbouring low-voltage bus bar；It is significant to note that spare phase
Mutually pipe mother specially connect neutral point pipe mother needs with other, and the two has certain difference in height on spatial position；In addition to failure phase
Transformer exits maintenance, other steps are all wiring work, reduces difficulty of construction and the construction time is greatly saved, mention
High fault removal efficiency.
Various pipe mother equipment described in the utility model are all made of overhead support, are mounted on above transformer, save land used,
And having contemplated that insulation distance, pipe mother is arranged in transformer outlet casing tube and arrester attachment, facilitates wiring.
The utility model refers mainly to the switching mode optimization of spare phase transformer, and the switching mode optimization, is not move
Under the premise of dynamic spare phase device for transformer, it is indirectly connected with method using cross-over pipe mother, the high pressure of failure phase will be connected to originally
Inlet wire and middle extrusion line are forwarded to spare phase, do not influence the effect for playing spare phase transformer, and saving working hour is that its maximum is excellent
Gesture.
Compared with traditional scheme, the failure that method for arranging described in the utility model can carry out simultaneously mutually exit with it is spare congenial
The relevant operation cut saves a large amount of working hours；The movement for avoiding spare phase device for transformer, extensive work is transformed to and is led
Line bridging, only need to exit failure and mutually be overhauled, reduce the operation difficulty of troubleshooting.
The utility model facilitate later period failure mutually to overhaul after the completion of investment again: with spare phase investment process it is similar, only
Sequence of construction need to be changed, dismounting pipe mother line is first passed through and exit spare phase, then move into the cause barrier phase that maintenance is completed, equally
Saving working hour improves construction efficiency.
The utility model is expounded the principles of the present invention and embodiment by embodiments above,
The method and core concept of the above embodiments are only used to help understand the utility model；The contents of the section should not be understood
For limitations of the present invention.
Claims (2)
1. a kind of flexible direct current converter station quick-switching spare phase transformer arrangement structure, it specifically include that high-voltage tube female (1),
Middle pressure pipe female (2), three-phase neutral point pipe female (3), spare phase neutral point pipe female (4), high voltage side of transformer casing (6), medium voltage side
Casing (9), low-pressure side casing (8) and neutral bushing (7)；It is characterized in that the high-voltage tube female (1), middle pressure pipe female (2),
Three-phase neutral point pipe female (3), spare phase neutral point pipe female (4) be switch for failure phase with spare phase it is single-phase.
2. flexible direct current converter station quick-switching spare phase transformer arrangement structure according to claim 1, feature exist
In the high-pressure side casing (6) of the high-voltage tube female (1) connection high pressure inlet wire and spare phase, medium pressure pipe female (2) connection is standby
With phase medium voltage side casing and middle extrusion line (5), three-phase neutral point pipe female (3) and spare phase neutral point pipe female (4) are separately connected respectively
Phase transformer winding neutral point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822092532.9U CN209298707U (en) | 2018-12-13 | 2018-12-13 | A kind of flexible direct current converter station quick-switching spare phase transformer arrangement structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822092532.9U CN209298707U (en) | 2018-12-13 | 2018-12-13 | A kind of flexible direct current converter station quick-switching spare phase transformer arrangement structure |
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| Publication Number | Publication Date |
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| CN209298707U true CN209298707U (en) | 2019-08-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109412060A (en) * | 2018-12-13 | 2019-03-01 | 国网浙江省电力有限公司 | A kind of flexible direct current converter station quick-switching spare phase transformer arrangement structure and method |
-
2018
- 2018-12-13 CN CN201822092532.9U patent/CN209298707U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109412060A (en) * | 2018-12-13 | 2019-03-01 | 国网浙江省电力有限公司 | A kind of flexible direct current converter station quick-switching spare phase transformer arrangement structure and method |
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