CN109687332A - The electrical major loop equipment double-layer arrangement structure of AC excitation speed change pump-storage generator - Google Patents
The electrical major loop equipment double-layer arrangement structure of AC excitation speed change pump-storage generator Download PDFInfo
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- CN109687332A CN109687332A CN201910085085.0A CN201910085085A CN109687332A CN 109687332 A CN109687332 A CN 109687332A CN 201910085085 A CN201910085085 A CN 201910085085A CN 109687332 A CN109687332 A CN 109687332A
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- 230000005284 excitation Effects 0.000 title claims abstract description 84
- 230000008859 change Effects 0.000 title claims abstract description 27
- 238000001816 cooling Methods 0.000 claims abstract description 14
- 239000000498 cooling water Substances 0.000 claims description 18
- 238000004378 air conditioning Methods 0.000 claims description 14
- 239000003507 refrigerant Substances 0.000 claims description 12
- 239000011150 reinforced concrete Substances 0.000 claims description 8
- 239000011378 shotcrete Substances 0.000 claims description 7
- 239000011435 rock Substances 0.000 claims description 4
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- 238000009412 basement excavation Methods 0.000 abstract description 9
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- 239000010410 layer Substances 0.000 description 72
- 230000006870 function Effects 0.000 description 6
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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
- H02B7/00—Enclosed substations, e.g. compact substations
- H02B7/06—Distribution substations, e.g. for urban network
- H02B7/08—Underground substations
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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
- H02B1/24—Circuit arrangements for boards or switchyards
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Abstract
The invention discloses a kind of electrical major loop equipment double-layer arrangement structures of AC excitation speed change pump-storage generator, the electrical major loop equipment of speed change pump-storage generator is divided into AC excitation system equipment and variable speed generation motor voltage circuit units, electrical major loop equipment is arranged in bus tunnel, bus tunnel includes the double-layer structure on bus tunnel upper layer and bus tunnel lower layer, layer arrangement AC excitation system equipment on bus tunnel, layer arrangement variable speed generation motor voltage circuit units under bus tunnel.It is arragement construction clear and rational of the present invention, economical and practical；Large pumped storage power plant underground structure of main power house is had not been changed, underground hole group excavation supporting difficulty and construction investment are greatly reduced；Structure is safe and reliable, is convenient for operation and maintenance；Solves the temperature requirement of the cooling of AC excitation power cabinet ontology and electric equipment operation environment, it is ensured that the electric function of AC excitation circuit units and variable speed generation motor voltage circuit units.
Description
Technical field
The present invention relates to hydroenergy storage station, especially a kind of electrical major loop of AC excitation speed change pump-storage generator
Equipment double-layer arrangement structure.
Background technique
Since nineteen sixties, external hydropower industry has begun to AC excitation speed change pump-storage generator
R&D work, AC excitation speed change pump-storage generator have obtained relatively broad application in Japan and Europe.AC excitation becomes
Fast unit is in addition to determining related system design, selecting suitable equipment technical parameters, implement equipment sheet according to engineering primary condition
Outside body key technical problem, since AC excitation speed change accumulation of energy unit compares conventional constant speed accumulation of energy unit, a whole set of friendship is increased
Excitation system device is flowed, occupied area about needs 500m2。
Hydroenergy storage station dominant electromechanical equipment is usually located at the underground power house of 200~300m of buried depth, and underground chamber is usual
It is made of main building hole, bus tunnel, main transformer hole, tail lock hole and other attached caverns etc..Unit equipment is arranged in underground main building,
The span of main building is generally 25~26m.It is investigated according to international variable units engineering, most power stations are by increasing underground main building
Span (some projects increase the span for being increased to 30~32m) increases underground main building length (length increases 20m or more), adds
The measures such as main building downstream auxiliary power house solve the Layout Problem of above-mentioned AC excitation equipment, but above scheme is due to increasing ground
The area of lower cavern, to underground Stability of Excavation Surrounding, more stringent requirements are proposed for excavation supporting construction, substantially increases Underground Tunnels
Room group's excavation supporting design difficulty and construction investment are not belonging to technology, economic entirely sensible engineering for variable units engineering
Scheme.
Summary of the invention
The technical problem to be solved by the invention is to provide a kind of connection and reasonable arrangement, it is economical and practical, safe and reliable, facilitate fortune
The electrical major loop equipment double-layer arrangement structure of the AC excitation speed change pump-storage generator of dimension.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is that: a kind of AC excitation speed change water-storage
The electrical major loop equipment of the electrical major loop equipment double-layer arrangement structure of unit, speed change pump-storage generator is divided into AC excitation
System equipment and variable speed generation motor voltage circuit units, electrical major loop equipment are arranged in bus tunnel, and bus tunnel includes
The double-layer structure on bus tunnel upper layer and bus tunnel lower layer, layer arrangement AC excitation system equipment on bus tunnel, bus tunnel lower layer cloth
Set variable speed generation motor voltage circuit units.
The AC excitation system equipment positioned at bus tunnel upper layer include AC excitation bus, AC excitation power cabinet,
Converge cabinet, overvoltage protection cabinet, AC excitation power cabinet cooling device and cooling water pipe, and AC excitation bus one end connects excitation
Transformer, intermediate sequential connection AC excitation power cabinet, confluence cabinet and overvoltage protection cabinet, it is electronic that the other end connects variable speed generation
Machine forms AC excitation circuit；AC excitation power cabinet cooling device is connected to AC excitation power cabinet by cooling water pipe.
The variable speed generation motor voltage circuit units positioned at bus tunnel lower layer include isolated-phase enclosed bus, electric braking
Switchgear, console mode PT cabinet, generator breaker, stent-type PT cabinet, phase-change switch and PT/ arrester cabinet, isolated-phase enclosed bus
One end connects variable speed generation motor, intermediate sequential connection electric braking switchgear, console mode PT cabinet, generator breaker, bracket
Formula PT cabinet, phase-change switch and PT/ arrester cabinet, the other end connect main transformer, form variable speed generation motor voltage circuit.
The stent-type PT cabinet is installed on isolated-phase enclosed bus top between generator breaker and phase-change switch.
The phase-change switch use five pole horizontal arranging modes, both ends by isolated-phase enclosed bus respectively with stent-type PT cabinet
It is connected with PT/ arrester cabinet.
The bus tunnel lower layer further includes that phase-change switch digs structure, and bus tunnel upper layer further includes that cooling water pipe secretly applies position
Inverted beam structure, bus tunnel be circular arch stalk shape underground chamber, using combined bolting and shotcrete+reinforced concrete lining layer safeguard structure；It is female
Line hole double-layer structure is bottom plate+concrete continuous wall+slab and girder；It is bus tunnel abutment wall rock that bus tunnel reversing switch, which digs structure,
Body digs, and is circular arch stalk shape underground chamber, is protected using combined bolting and shotcrete+reinforced concrete lining layer；Cooling water pipe secretly applies
The inverted beam structure of position is located at bus tunnel upper layer bottom plate part.
It there also is provided the runoff of intermediary when chilling type air-conditioning system in the bus tunnel, the runoff of intermediary when chilling type air-conditioning system includes air-conditioning
Indoor unit, refrigerant pipe and air-conditioner outdoor unit；Air conditioner indoor unit is installed on the top on bus tunnel upper layer and the top of bus tunnel lower layer,
Air-conditioner outdoor unit is connected to by refrigerant pipe.
The beneficial effects of the present invention are: the electronic electrical-mechanical major loop equipment of variable speed generation and bus tunnel arragement construction are clearly closed
It manages, is economical and practical；Large pumped storage power plant underground structure of main power house is had not been changed, bus tunnel double-layer structure is only set, is dropped significantly
Low underground hole group excavation supporting difficulty and construction investment；Realize variable units AC excitation system equipment and variable speed generation
The reasonable Arrangement and connection of motor voltage circuit units, structure is safe and reliable, is convenient for operation and maintenance；Solves AC excitation function
The temperature requirement of the cooling of rate cabinet ontology and above-mentioned electric equipment operation environment, it is ensured that AC excitation circuit and variable speed generation are electronic
Electromechanics pushes back the electric function of pipeline equipment.
Detailed description of the invention
Fig. 1 is the electrical major loop equipment double-layer arrangement structure signal of AC excitation speed change pump-storage generator of the invention
Figure；
Fig. 2 is that the AC excitation system equipment rebuilding plane of AC excitation speed change pump-storage generator of the invention is shown
It is intended to；
Fig. 3 is the variable speed generation motor voltage circuit units arrangement of AC excitation speed change pump-storage generator of the invention
Floor map；
In figure: 1--- variable speed generation motor；2--- AC excitation bus；3--- exciting transformer；4--- AC excitation
Power cabinet；5--- confluence cabinet；6--- overvoltage protection cabinet；7--- AC excitation power cabinet cooling device；8--- is female from mutually closing
Line；9--- electric braking switchgear；10--- console mode PT cabinet；11--- generator breaker；12--- stent-type PT cabinet；13--- is changed
Mutually switch；14---PT/ arrester cabinet；15--- main transformer；16--- cooling water pipe；17--- air conditioner indoor unit；18--- refrigerant
Pipe；19--- air-conditioner outdoor unit；20--- bus tunnel upper layer；21--- bus tunnel lower layer；22--- phase-change switch digs structure；
23--- cooling water pipe secretly applies the inverted beam structure of position.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing, to the present invention into
Row is further described.It should be appreciated that the specific embodiments described herein are only used to explain the present invention, it is not used to
Limit the present invention.
As shown in Figure 1-3, the electrical major loop equipment rebuilding of AC excitation speed change pump-storage generator of the invention
The electrical major loop equipment of structure, speed change pump-storage generator is divided into AC excitation system equipment and variable speed generation motor voltage
Circuit units, electrical major loop equipment are arranged in bus tunnel, and bus tunnel includes bus tunnel upper layer 20 and bus tunnel lower layer 21
Double-layer structure, layer arrangement AC excitation system equipment on bus tunnel, layer arrangement variable speed generation motor voltage circuit under bus tunnel
Equipment.
The AC excitation system equipment positioned at bus tunnel upper layer 20 includes AC excitation bus 2, AC excitation power
Cabinet 4, confluence cabinet 5, overvoltage protection cabinet 6, AC excitation power cabinet cooling device 7 and cooling water pipe 16, AC excitation bus 2 one
End connection exciting transformer 3, intermediate sequential connection AC excitation power cabinet 4, confluence cabinet 5 and overvoltage protection cabinet 6, the other end connect
Variable speed generation motor 1 is connect, AC excitation circuit is formed；AC excitation power cabinet cooling device 7 is connected by cooling water pipe 16
To exchange exciting power cabinet 4.
The variable speed generation motor voltage circuit units positioned at bus tunnel lower layer 21 include isolated-phase enclosed bus 8, electricity
Brake switch cabinet 9, console mode PT cabinet 10, generator breaker 11, stent-type PT cabinet 12, phase-change switch 13 and PT/ arrester cabinet
14,8 one end of isolated-phase enclosed bus connects variable speed generation motor 1, intermediate sequential connection electric braking switchgear 9, console mode PT cabinet
10, generator breaker 11, stent-type PT cabinet 12, phase-change switch 13 and PT/ arrester cabinet 14, the other end connect main transformer
15, form variable speed generation motor voltage circuit.
The stent-type PT cabinet 12 is installed on isolated-phase enclosed bus between generator breaker 11 and phase-change switch 13
8 tops.
The phase-change switch 13 uses five pole horizontal arranging modes, both ends by isolated-phase enclosed bus 8 respectively with stent-type
PT cabinet 12 and PT/ arrester cabinet 14 connect.
The bus tunnel lower layer further includes that phase-change switch digs structure 22, and bus tunnel upper layer further includes that cooling water pipe secretly applies position
The inverted beam structure 23 set, bus tunnel are circular arch stalk shape underground chamber, using combined bolting and shotcrete+reinforced concrete lining layer protection knot
Structure；Bus tunnel double-layer structure is bottom plate+concrete continuous wall+slab and girder；It is bus that bus tunnel reversing switch, which digs structure 22,
Hole abutment wall rock mass digs, and is circular arch stalk shape underground chamber, is protected using combined bolting and shotcrete+reinforced concrete lining layer；It is cooling
The inverted beam structure 23 that water pipe secretly applies position is located at bus tunnel upper layer 20 bottom plate part.
It there also is provided the runoff of intermediary when chilling type air-conditioning system in the bus tunnel, the runoff of intermediary when chilling type air-conditioning system includes air-conditioning
Indoor unit 17, refrigerant pipe 18 and air-conditioner outdoor unit 19；Air conditioner indoor unit 17 is installed on top and the bus tunnel on bus tunnel upper layer 20
The top of lower layer 21 is connected to air-conditioner outdoor unit 19 by refrigerant pipe 18.
Specifically, AC excitation circuit realizes the electric function in AC excitation circuit；AC excitation power cabinet is cooling
Device 7 is connected to AC excitation power cabinet 4 by cooling water pipe 16, provides heat exchange for AC excitation power cabinet 4, while cold
But water pipe is secretly spread in the inverted beam structure 23 of 20 bottom plate of bus tunnel upper layer, is not take up maintenance channel, reduces circuit failure leak
Influence the risk of electric equipment operation.The structure has not been changed large pumped storage power plant underground structure of main power house, only will be usually fixed
The single layer bus tunnel of fast unit is designed to the double-deck bus tunnel, which is arranged in bus tunnel upper layer 20, greatly reduces underground
Cavity group excavation supporting difficulty and construction investment；Arrange clear and rational, structure is safe and reliable, is convenient for operation and maintenance.
Variable speed generation motor voltage circuit realizes the electric function in variable speed generation motor voltage circuit.The structure is not
Change large pumped storage power plant underground structure of main power house, the single layer bus tunnel of usual constant speed unit is only designed to the double-deck mother
Line hole, the structure are arranged in bus tunnel lower layer 21, greatly reduce underground hole group excavation supporting difficulty and construction investment；Arrangement
Clear and rational, structure is safe and reliable, is convenient for operation and maintenance.
Stent-type PT cabinet 12, it is peculiar for variable speed generation motor voltage circuit, it is located at generator breaker 11 and described
Between phase-change switch 13, it is installed on 8 top of isolated-phase enclosed bus, solves and meets in limited bus tunnel length range
The Layout Problem of variable units PT cabinet, avoids the influence to major loop isolated-phase enclosed bus general layout.
Phase-change switch 13 use five pole horizontal arranging modes, both ends by the isolated-phase enclosed bus 8 respectively with stent-type
PT cabinet 12 and PT/ arrester cabinet 14 connect.Unreasonable design is caused for bus tunnel whole height is not excessively increased, phase-change switch
The high problem in space needed for five pole horizontal arranging modes avoid the phase-change switch rebuilding of usual constant speed unit, and convenient for fortune
Row maintenance.
Bus tunnel upper layer 20 and bus tunnel lower layer 21 adapt to AC excitation system equipment arragement construction and variable speed generation respectively
Motor voltage circuit units arragement construction rationally realizes the electric function of above equipment；Bus tunnel reversing switch digs structure
22 is adapt to the extremely horizontally disposed design of phase-change switch 13 5, dig for bus tunnel abutment wall rock mass, are circular arch stalk shape
Underground chamber is protected using combined bolting and shotcrete+reinforced concrete lining layer；20 cooling water pipe of bus tunnel upper layer secretly applies the anti-of position
Girder construction 23, for the reasonable Arrangement for adapting to cooling water pipe.Entire civil engineering structure arrangement has good adaptability to equipment arrangement,
It is economic and practical.
The environment temperature on bus tunnel upper layer 20 and bus tunnel lower layer 21 is adjusted in the runoff of intermediary when chilling type air-conditioning system, tool
Have that design freedom is high, easy to installation and maintenance, advanced control, it is reliable for operation, energy saving the features such as.The runoff of intermediary when chilling
Type air-conditioning system passes through refrigerant pipe by the air conditioner indoor unit 17 that the more tops on bus tunnel upper layer 20 and bus tunnel lower layer 21 are installed
18 connection air-conditioner outdoor units 19, the refrigerant pipe 18 are the air-conditioner outdoor unit 19 leading to the conveying refrigerant of air conditioner indoor unit 18
Road.
The present invention is only female by traditional single layer under the premise of not changing large pumped storage power plant underground structure of main power house
Line height of holes rationally increases, and is designed as the double-deck bus tunnel；The distinctive AC excitation of layer arrangement variable units on the bus tunnel added
System equipment；And carried out applying formula design secretly for its cooling line, use inverted beam structure；Optimize bus tunnel lower layer speed change hair
The arrangement of electric motor voltage circuit units, one group of PT cabinet distinctive to variable units are designed using stent-type, do not increase mother
Line hole length；It uses simultaneously and adapts to that phase-change switch five is extremely horizontally disposed digs structure, increase bus tunnel lower layer without additional
Height；The runoff of intermediary when chilling type air-conditioning system is respectively set at the top of bus tunnel upper and lower level, has saved ground installation arrangement space.
The structure greatly reduces underground hole group excavation supporting difficulty and construction investment；Variable units AC excitation system is realized to set
Standby and variable speed generation motor voltage circuit units reasonable Arrangements and connection, structure is safe and reliable, is convenient for operation and maintenance；It solves
AC excitation power cabinet ontology is cooling and the temperature requirement of above-mentioned electric equipment operation environment, it is ensured that AC excitation circuit and
The electric function of variable speed generation motor voltage circuit units.
It is further in conjunction with attached drawing for using certain large pumped storage power plant engineering of technical solution of the present invention below
Illustrate:
Certain large pumped storage power plant engineering accesses electric power system design requirement according to power station, and 2 single-machine capacities, which are arranged, is
The AC excitation speed change pump-storage generator of 300MW, in order to meet the electronic electrical-mechanical major loop equipment of variable speed generation (including exchange
Excitation system equipment and variable speed generation motor voltage circuit units) arrangement requirement, in workshop be provided with knot of the invention
Structure.
Workshop is underground power house, and Arch Excavation elevation is 1008.50m, and it is 953.50 that bottom plate, which excavates elevation, and factory building height is
55.0m, underground power house by between 1# major-minor workshop, 1#~6# host, between erecting bed, 7#~12# host, 2# major-minor workshop form,
It is arranged in " one " font, cavern's total length is 414.0m, width 25.0m, host 10 300MW constant speed reversibles of interior installation
Accumulation of energy unit and 2 300MW speed change reversible accumulation of energy units；Main transformer cavity parallel is arranged in main building downstream side, net with main building
Distance is 40m, arranges the equipment such as main transformer and SFC, the wide open digging of main transformer is having a size of 450.5m × 21.0m × 22.5m；Bus tunnel
Between underground power house and main transformer hole, a bus tunnel is arranged in every unit, and length is 40m.11#, 12# unit section and 11#,
12# bus tunnel is provided with the electronic electrical-mechanical major loop equipment of variable speed generation and bus tunnel arragement construction of the invention.
In order to meet the electronic electrical-mechanical major loop equipment of variable speed generation (including AC excitation system equipment and variable speed generation electricity
Motivation voltage circuit equipment) arrangement requirement, for 11#~12# bus tunnel using double layer reinforced concrete structure, section is circular arch stalk
Shape, section dead size are 8.9 × 11.7m, and bus tunnel lower layer (layer 20) elevation busbar laminate between 976.00m, with host is female with height
Line hole upper layer (layer 20) elevation generator floor between 982.50m, with host is same high.
AC excitation system equipment is arranged on bus tunnel upper layer 20, and length is that 2 one end of AC excitation bus of 230 three-phase rice connects
Exciting transformer 3 is connect, then 4, one groups of four groups of exciting power cabinets, 5, one groups of the confluence cabinet overvoltage protection cabinet 6 that is linked in sequence, the other end
Variable speed generation motor 1 is connected, AC excitation circuit is formed.
One group of AC excitation power cabinet cooling device 7 is connected to four groups of AC excitation power cabinets 4 by cooling water pipeline 16.
In order to meet the arrangement needs of cooling water pipe 16, the 20 local setting inverted beam structure 23 on bus tunnel upper layer, actual design totally 5
Place.
Bus tunnel lower layer 21 arranges variable speed generation motor voltage circuit units, and length is the female from mutually closing of 85 three-phase rice
8 one end of line connects variable speed generation motor 1, then 9, one groups of one group of electric braking switchgear, 10, one groups of the console mode PT cabinet that is linked in sequence
Generator breaker 11,12, one groups of pack support formula PT cabinet, 13, one groups of a phase-change switch PT/ arrester cabinet 14, other end connection master
Transformer 15 forms variable speed generation motor voltage circuit.
Stent-type PT cabinet 12, it is peculiar for variable speed generation motor voltage circuit, it is located at generator breaker 11 and commutation
Between switch 13, it is installed on 8 top of isolated-phase enclosed bus, without increasing bus tunnel length.
Phase-change switch 13 use five pole horizontal arranging modes, both ends by isolated-phase enclosed bus 8 respectively with stent-type PT cabinet
12 and PT/ arrester cabinet 14 connects, without additionally increasing the height of bus tunnel lower layer 21.
Needs are arranged in order to meet phase-change switch 13, dig to form commutation on abutment wall on the left of the 21 middle part factory, bus tunnel lower layer
Switch digs structure 22, length 2.7m, and section is circular arch stalk shape, and section dead size is 9.5 × 5.85m, bottom elevation and mother
Xian Dong lower layer is the same as high.
In order to meet 21 electric equipment operation environmental condition of bus tunnel upper layer 20 and bus tunnel lower layer, using the runoff of intermediary when chilling
Type air-conditioning system is adjusted.Installation 16 and 9 air conditioner indoor unit 17 pass through respectively for bus tunnel upper layer 20 and 21 top of lower layer
Refrigerant pipe 18 is connected to the air-conditioner outdoor unit 19 for being arranged in main transformer hole top layer.
The runoff of intermediary when chilling type air-conditioning system adjusts the environment temperature on bus tunnel upper layer 20 and bus tunnel lower layer 21
Section, 9 air-conditionings by actual installation at 21 top of 16 air conditioner indoor unit 17 and bus tunnel lower layer at 20 top of bus tunnel upper layer
Indoor unit 17 connects air-conditioner outdoor unit 19 by refrigerant pipe 18.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
Depending on protection scope of the present invention.
Claims (7)
1. a kind of electrical major loop equipment double-layer arrangement structure of AC excitation speed change pump-storage generator, which is characterized in that become
The electrical major loop equipment of fast pump-storage generator is divided into AC excitation system equipment and variable speed generation motor voltage circuit is set
Standby, electrical major loop equipment is arranged in bus tunnel, and bus tunnel includes the double-layer structure on bus tunnel upper layer and bus tunnel lower layer, female
Layer arrangement AC excitation system equipment on line hole, layer arrangement variable speed generation motor voltage circuit units under bus tunnel.
2. the electrical major loop equipment double-layer arrangement structure of AC excitation speed change pump-storage generator according to claim 1,
It is characterized in that, the AC excitation system equipment positioned at bus tunnel upper layer (20) includes AC excitation bus (2), exchanges and encourage
Magnetic power cabinet (4), confluence cabinet (5), overvoltage protection cabinet (6), AC excitation power cabinet cooling device (7) and cooling water pipe
(16), AC excitation bus (2) one end connection exciting transformer (3), intermediate sequential connection AC excitation power cabinet (4), confluence
Cabinet (5) and overvoltage protection cabinet (6), the other end connect variable speed generation motor (1), form AC excitation circuit；AC excitation
Power cabinet cooling device (7) is connected to AC excitation power cabinet (4) by cooling water pipe (16).
3. the electrical major loop equipment double-layer arrangement structure of AC excitation speed change pump-storage generator according to claim 1,
It is characterized in that, the variable speed generation motor voltage circuit units positioned at bus tunnel lower layer (21) include isolated-phase enclosed bus
(8), electric braking switchgear (9), console mode PT cabinet (10), generator breaker (11), stent-type PT cabinet (12), phase-change switch
(13) and PT/ arrester cabinet (14), isolated-phase enclosed bus (8) one end connect variable speed generation motor (1), and centre is linked in sequence electric
Brake switch cabinet (9), console mode PT cabinet (10), generator breaker (11), stent-type PT cabinet (12), phase-change switch (13) and
PT/ arrester cabinet (14), the other end connect main transformer (15), form variable speed generation motor voltage circuit.
4. the electrical major loop equipment double-layer arrangement structure of AC excitation speed change pump-storage generator according to claim 3,
It is characterized in that, the stent-type PT cabinet (12) is located between generator breaker (11) and phase-change switch (13), be installed on from
Phase enclosed busbar (8) top.
5. the electrical major loop equipment double-layer arrangement structure of AC excitation speed change pump-storage generator according to claim 3,
It is characterized in that, the phase-change switch (13) use five pole horizontal arranging modes, both ends by isolated-phase enclosed bus (8) respectively with
Stent-type PT cabinet (12) and PT/ arrester cabinet (14) connection.
6. the electrical major loop equipment double-layer arrangement structure of AC excitation speed change pump-storage generator according to claim 5,
It is characterized in that, the bus tunnel lower layer further includes that phase-change switch digs structure (22), bus tunnel upper layer further includes cooling water pipe
The inverted beam structure (23) of dark deposited position, bus tunnel is circular arch stalk shape underground chamber, using combined bolting and shotcrete+reinforced concrete lining layer
Safeguard structure；Bus tunnel double-layer structure is bottom plate+concrete continuous wall+slab and girder；Bus tunnel reversing switch digs structure
(22) it is digged for bus tunnel abutment wall rock mass, is circular arch stalk shape underground chamber, using combined bolting and shotcrete+reinforced concrete lining layer
Protection；The inverted beam structure (23) that cooling water pipe secretly applies position is located at bus tunnel upper layer (20) bottom plate part.
7. the electrical major loop equipment double-layer arrangement structure of AC excitation speed change pump-storage generator according to claim 6,
It is characterized in that, there also is provided the runoff of intermediary when chilling type air-conditioning system in the bus tunnel, the runoff of intermediary when chilling type air-conditioning system includes
Air conditioner indoor unit (17), refrigerant pipe (18) and air-conditioner outdoor unit (19)；Air conditioner indoor unit (17) is installed on bus tunnel upper layer (20)
Top and bus tunnel lower layer (21) top, pass through refrigerant pipe connection (18) to air-conditioner outdoor unit (19).
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| CN201910085085.0A CN109687332A (en) | 2019-01-29 | 2019-01-29 | The electrical major loop equipment double-layer arrangement structure of AC excitation speed change pump-storage generator |
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| CN201910085085.0A CN109687332A (en) | 2019-01-29 | 2019-01-29 | The electrical major loop equipment double-layer arrangement structure of AC excitation speed change pump-storage generator |
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|---|---|---|---|---|
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| CN107911054A (en) * | 2017-12-01 | 2018-04-13 | 许继电气股份有限公司 | A kind of speed change pump-storage generator AC excitation system and unit self-start method |
| CN209448315U (en) * | 2019-01-29 | 2019-09-27 | 中国电建集团北京勘测设计研究院有限公司 | The electrical major loop equipment double-layer arrangement structure of AC excitation speed change pump-storage generator |
-
2019
- 2019-01-29 CN CN201910085085.0A patent/CN109687332A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07245872A (en) * | 1994-03-04 | 1995-09-19 | Toshiba Corp | Variable speed generator motor |
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