CN109412060A - A kind of flexible direct current converter station quick-switching spare phase transformer arrangement structure and method - Google Patents
A kind of flexible direct current converter station quick-switching spare phase transformer arrangement structure and method Download PDFInfo
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- CN109412060A CN109412060A CN201811526708.5A CN201811526708A CN109412060A CN 109412060 A CN109412060 A CN 109412060A CN 201811526708 A CN201811526708 A CN 201811526708A CN 109412060 A CN109412060 A CN 109412060A
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- phase
- spare
- neutral point
- voltage side
- transformer
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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
- H02B3/00—Apparatus specially adapted for the manufacture, assembly, or maintenance of boards or switchgear
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
一种柔性直流换流站快速投切备用相变压器布置结构及方法，它主要包括：高压管母、中压管母、三相中性点管母、备用相中性点管母、变压器高压侧套管、中压侧套管、低压侧套管和中性点套管；所述的高压管母、中压管母、三相中性点管母、备用相中性点管母均是用于故障相与备用相切换的单相；所述方法包括：a）拆除故障相变压器所有引线，将故障相退出；b）同时将故障相高压进线直接经由高压母线连接到备用相变压器，备用相中压侧经由另一母线连接到原故障相对应的中压侧出线；c）备用相低压侧经由低压母线连接到附近的低压侧出线；d）故障相退出与备用相投切同时完成，上电恢复正常工作；本发明大大缩短了工时，提高了经济效益。
A flexible DC converter station quick switching standby phase transformer layout structure and method, which mainly includes: high voltage tube bus, medium voltage tube bus, three-phase neutral point tube bus, standby phase neutral point tube bus, transformer high voltage side Bushings, medium-voltage side bushings, low-voltage side bushings and neutral point bushings; the high-pressure pipe mother, medium-voltage pipe mother, three-phase neutral point pipe mother, and standby phase neutral point pipe mother The single-phase switch between the faulty phase and the standby phase; the method includes: a) removing all leads of the faulty phase transformer, and withdrawing the faulty phase; The medium-voltage side of the phase is connected to the outlet line of the medium-voltage side corresponding to the original fault via another bus; c) The low-voltage side of the standby phase is connected to the nearby low-voltage side outlet via the low-voltage bus; d) The fault phase exit and the standby phase switching are completed at the same time, and the upper The electricity returns to normal work; the invention greatly shortens the working hours and improves the economic benefit.
Description
Technical field
The present invention relates to a kind of flexible direct current converter station quick-switching spare phase transformer arrangement structure and methods；Belong to
In 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
It is an object of the invention to overcome the shortcomings of the prior art, and provide it is a kind of it is improved, can substantially shorten work
When, it increases economic efficiency, improves spare phase switching efficiency, have quick compared with high universalizable and the flexible direct current converter station of flexibility
Switching spare phase transformer arrangement structure and method.
The object of the present invention is achieved by the following technical solutions, and a kind of flexible direct current converter station quick-switching is spare
Phase transformer arragement construction, 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 via high voltage bus simultaneously, spare phase medium voltage side via
Another bus is connected to cause 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 beneficial effects of the present invention are:
(1) compared with traditional scheme, method for arranging of the present invention can carry out failure simultaneously and mutually exit and spare phase switching
Relevant operation saves a large amount of working hours；
(2) compared with traditional scheme, method for arranging of the present invention avoids the movement of spare phase conversion current transformer device, will be big
Work change is measured into conducting wire bridging, only failure need to be exited and mutually be overhauled, reduce the operation difficulty of troubleshooting；
(3) compared with traditional scheme, method for arranging of the present invention, the investment again after the completion of failure is mutually overhauled after being similarly
Save 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 present invention works normally.
Fig. 2 is another kind single-phase transformer and spare phase wiring state schematic diagram when the present invention works normally.
Fig. 3 is a kind of status diagram of quick-switching method of the present invention.
Fig. 4 is another status diagram of quick-switching method of the present invention.
Fig. 5 is single-phase transformer and spare transformer wiring plan view when the present invention works normally.
Specific embodiment
The present invention will be described in detail below with reference to the accompanying drawings: Fig. 1, shown in 2, and a kind of flexible direct current converter station is quickly thrown
Spare phase transformer arrangement structure is cut, it specifically includes that high-voltage tube mother 1, middle pressure pipe mother 2, three-phase neutral point pipe mother 3, spare 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 medium pressure pipe mother 2 connects in spare phase
Side casing and middle extrusion line 5 are pressed, the neutral point pipe mother 3,4 connects each phase transformer winding neutral point, and mother has connected with upper tube
It connects 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 via high voltage bus simultaneously, spare phase medium voltage side via
Another bus is connected to cause 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.
Embodiment:
Flexible direct current converter station quick-switching spare phase transformer arrangement method of the present invention is conducive to shorten working hour, mention
High fault removal efficiency；Spare phase and failure establish connection by pipe mother and avoid device for transformer at a distance of from farther out
The movement of itself；Originally the high pressure inlet wire for being connected to failure phase bushing can be directly connected across to high-voltage tube mother to be 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, change for being connected to
Flow valve hall；Spare phase low-pressure side is then connected directly to neighbouring low-voltage bus bar；It is significant to note that the neutral point of spare phase
Mutually pipe mother specially connect pipe mother needs with other, and the two has certain difference in height on spatial position；In addition to failure phase transformer
Exit maintenance, other steps be all wiring work, reduce difficulty of construction and the construction time be greatly saved, improve failure
Exclude efficiency.
Various pipe mother equipment of the present invention are all made of overhead support, are mounted on above transformer, save land used, and
Consider insulation distance, pipe mother is arranged in transformer outlet casing tube and arrester attachment, facilitates wiring.
The present invention refers mainly to the switching mode optimization of spare phase transformer, switching mode optimization, be do not move it is standby
Under the premise of with phase transformer device, it is indirectly connected with method using cross-over pipe mother, the high pressure inlet wire of failure phase will be connected to originally
It is forwarded to spare phase with middle extrusion line, does not influence the effect for playing spare phase transformer, and saving working hour is its sharpest edges.
Compared with traditional scheme, method for arranging of the present invention can carry out failure simultaneously and mutually exit and spare phase switching
Relevant operation saves a large amount of working hours；The movement for avoiding spare phase device for transformer, by extensive work be transformed to conducting wire across
It connects, only need to exit failure and mutually be overhauled, reduce the operation difficulty of troubleshooting.
The present invention facilitate later period failure mutually to overhaul after the completion of investment again: with spare phase investment process it is similar, only need to change
Become sequence of construction, first pass through dismounting pipe mother line and exit spare phase, then moves into the cause barrier phase that maintenance is completed, same saving
Working hour improves construction efficiency.
The present invention is expounded the principle of the present invention and embodiment by embodiments above, the above implementation
The explanation of example is merely used to help understand method and core concept of the invention；The contents of the section should not be construed as to of the invention
Limitation.
Claims (3)
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.
3. a kind of side using the as claimed in claim 1 or 22 flexible direct current converter station quick-switching spare phase transformer arrangement structures
Method, it is characterised in that the 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 via high voltage bus simultaneously, spare phase medium voltage side via
Another bus is connected to cause 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811526708.5A CN109412060A (en) | 2018-12-13 | 2018-12-13 | A kind of flexible direct current converter station quick-switching spare phase transformer arrangement structure and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811526708.5A CN109412060A (en) | 2018-12-13 | 2018-12-13 | A kind of flexible direct current converter station quick-switching spare phase transformer arrangement structure and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109412060A true CN109412060A (en) | 2019-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811526708.5A Pending CN109412060A (en) | 2018-12-13 | 2018-12-13 | A kind of flexible direct current converter station quick-switching spare phase transformer arrangement structure and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118174246A (en) * | 2024-03-13 | 2024-06-11 | 上海勘测设计研究院有限公司 | A switchable flexible DC connection variable arrangement structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202678731U (en) * | 2011-10-17 | 2013-01-16 | 中国电力工程顾问集团东北电力设计院 | Quick spare phase layout structure for setting high-voltage cable outgoing line of power station |
| CN207459723U (en) * | 2017-12-01 | 2018-06-05 | 上海电力设计院有限公司 | Spare phase transformer quickly puts into arrangement |
| CN207663923U (en) * | 2017-11-21 | 2018-07-27 | 中国西电电气股份有限公司 | A kind of three-phase combined transformer for capableing of live quick replacement spare phase |
| CN209298707U (en) * | 2018-12-13 | 2019-08-23 | 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 |
-
2018
- 2018-12-13 CN CN201811526708.5A patent/CN109412060A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202678731U (en) * | 2011-10-17 | 2013-01-16 | 中国电力工程顾问集团东北电力设计院 | Quick spare phase layout structure for setting high-voltage cable outgoing line of power station |
| CN207663923U (en) * | 2017-11-21 | 2018-07-27 | 中国西电电气股份有限公司 | A kind of three-phase combined transformer for capableing of live quick replacement spare phase |
| CN207459723U (en) * | 2017-12-01 | 2018-06-05 | 上海电力设计院有限公司 | Spare phase transformer quickly puts into arrangement |
| CN209298707U (en) * | 2018-12-13 | 2019-08-23 | 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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118174246A (en) * | 2024-03-13 | 2024-06-11 | 上海勘测设计研究院有限公司 | A switchable flexible DC connection variable arrangement structure |
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Application publication date: 20190301 |