CN106602445A - Modularized intelligent mobile transformer station system - Google Patents
Modularized intelligent mobile transformer station system Download PDFInfo
- Publication number
- CN106602445A CN106602445A CN201611072186.7A CN201611072186A CN106602445A CN 106602445 A CN106602445 A CN 106602445A CN 201611072186 A CN201611072186 A CN 201611072186A CN 106602445 A CN106602445 A CN 106602445A
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- CN
- China
- Prior art keywords
- cars
- intelligent mobile
- reactive
- distribution
- transformer
- 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
-
- 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
-
- 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
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/52—Mobile units, e.g. for work sites
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
- H02J3/1821—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
-
- 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
- Y02E40/10—Flexible AC transmission systems [FACTS]
Abstract
The invention relates to a modularized intelligent mobile transformer station system which is characterized by including five function-independent vehicle modules, respectively, a #1 transformer vehicle, a #2 distribution vehicle, a #3 automatic bus transfer vehicle, a #4 reactive compensation vehicle, and a #5 generating vehicle, the modules can be independently used and can be combined to form various power supply solution schemes based on the power grid demand, and the solution schemes include: whole transformer station replacement, switching station replacement, reactive compensation, automatic bus transfer, and generator direct power supply. The system is a comprehensive movable type electric power supply solution scheme adopting modularized design idea, covers the generating, transmission, transformation, and distribution links, can build a comprehensive first-aid repair platform and a new maintenance mode, and improves the reliability and stability of the area power grid.
Description
Technical field
The invention belongs to grid equipment technical field, and in particular to a kind of intelligent mobile transformer station based on modularization idea
The mobile substation of system, particularly 110kV and above.
Background technology
Due to developing rapidly for economic construction, the demand of electric power energy is also advanced by leaps and bounds, Jing load often occurs and increases suddenly
Plus situation, original power distribution point and capacity cannot meet normal power demands in time, cause some areas electricity consumption lance
Shield is projected very much.Mobile substation can solve the present situation of this electricity consumption contradiction.When load is nervous or when being badly in need of transfer load
Use can be migrated immediately, can integrally move away again, reach after load is steady
Not enough purpose.
Eighties of last century mid-term, the U.S. have occurred as soon as mobile substation, but as quality weight, volume constrain greatly popularization and answer
With;In eighties of last century latter stage, because of new technique, new technology, new material development and emerge in large numbers, by the weight and volume of mobile substation significantly
Degree is reduced, and mobile substation is progressively developed in terms of Large Copacity and high voltage grade in North America and Europe, has been reached even super
Cross the capacity and electric pressure of conventional substation in urban distribution network.At present, the mobile substation majority that China has occurred is mining
The low capacity of flame proof, the mobile substation (below 10kV) of low-voltage.With the development and perfection of China's network system, either
National energy-saving reduces discharging, meet the requirement of special electricity consumption, or power department is reduced investment outlay, reasonable disposition uses the needs of equipment,
Also electricity consumption department to power flexible, quick demand, it is necessary to greatly develop all size, class mobile substation produce
Product.
In view of this, it is necessary to provide a kind of modularization intelligent mobile substation system, to meet practical application needs.
The content of the invention
In view of the shortcomings of the prior art, it is an object of the invention to provide a kind of modularization intelligent mobile substation system
System, cover send out, it is defeated, become, with links.
To achieve these goals, the technical solution adopted in the present invention is:A kind of modularization intelligent mobile substation system
System, it is characterised in that include with standalone feature five vehicle modules, be respectively:No. 1 change electric car, No. 2 distribution trolleys, No. 3 it is standby
Car, No. 4 reactive-load compensation cars, No. 5 generator car are hauled oneself willingly into, modules can be used alone, it is also possible to according to electrical network demand combinations shape
Into various powering solutions, solution includes following several:
1) replace bed rearrangement transformer station:From No. 1 change electric car and No. 2 distribution trolleys, vehicle moving transformer station is combined as, is replaced
Bed rearrangement transformer station;
2) replace switching station:No. 2 distribution trolleys are only selected, replaces 10kV switching stations;
3) take turns transformation:No. 1 distribution trolley is only selected, is used as wheel transformation;
4) reactive-load compensation:From No. 1 change electric car, No. 2 distribution trolleys and No. 4 reactive-load compensation cars, by No. 4 reactive-load compensation cars to moving
The electric power system of dynamic transformer station carries out reactive-load compensation;
5) prepared auto restart:From No. 1 change electric car, No. 2 distribution trolleys and No. 3 prepared auto restart cars, ensure important negative by No. 3 prepared auto restart cars
The power supply reliability of lotus;
6) the direct electric power system of electromotor:It is from No. 5 generator car and No. 2 distribution trolleys, only to transformer station as emergency power supply
Vertical power supply.
Further, described modularization intelligent mobile substation system, it is characterised in that the scale of system is 1 time
110kV inlet wires;Main transformer adopts 1 capacity 20MVA three-phase two-simulation transformer;10kV single bus schemes, outlet 4 times, 1
Stand with change, 1 10kV voltage transformer, while configuring the reactive compensation system of 3000kVA.
Further, described modularization intelligent mobile substation system, it is characterised in that the standalone feature of each module
Realize all on the platform trailer of standard, single mode block length is less than or equal to 13 meters, width is less than or equal to 3 meters, is highly less than or equal to
It is 4.2 meters, convenient to transport.
Further, described modularization intelligent mobile substation system, it is characterised in that No. 1 change electric car places 110kV
Spark gap, HGIS, transformer equipment;Transformator compares 110kV using fixed voltage:10.5kV.
Further, described modularization intelligent mobile substation system, it is characterised in that No. 2 distribution trolleys place 10kV
Connection cable and drum between switch cubicle, comprehensive self-protecting device and change electric car and distribution trolley;10kV switch cubicles adopt solid
Insulate full sealing switch cabinet, and all charging members and switch are hermetically sealed in an epoxy modeling fat housing.
Further, described modularization intelligent mobile substation system, it is characterised in that No. 3 prepared auto restart cars place solid
The alternate power autocast system that state switching switch is constituted;Solid converting switch adopts IGCT and mechanical switch parallel running
Mode.
Further, described modularization intelligent mobile substation system, it is characterised in that No. 4 reactive-load compensation cars are placed
SVG static var compensation systems;Using a kind of densification tower structure SVG STATCOMs.
Further, described modularization intelligent mobile substation system, it is characterised in that No. 5 generator car place diesel oil
Generating set, adopt output voltage for 10kV diesel generating set, realize docking with No. 2 change electric cars, No. 3 prepared auto restart cars.
Compared with prior art, the present invention has following beneficial effect:The modularization intelligent mobile substation of the present invention
System, is a kind of comprehensive portable supply of electric power solution of employing modular design method, cover send out, it is defeated, become, with each
Individual link.Including:It is portable to become electric car, Mobile distribution car, portable prepared auto restart car, movable type SVG, Mobile power generation vehicle,
Can be used for the comprehensive emergency first-aid repair platform of framework, build brand-new O&M maintenance model, improve regional power grid reliability and
Stability.
Description of the drawings
Fig. 1 is modularization intelligent mobile substation system totality pie graph.
Fig. 2 is that instead of bed rearrangement transformer station schematic diagram.
Fig. 3 is that instead of switching station's schematic diagram.
Fig. 4 is wheel transformation functional schematic.
Fig. 5 is no-power compensation function schematic diagram.
Fig. 6 is backup power automatic switching function schematic diagram.
Fig. 7 is emergency power supply functional schematic.
Specific embodiment
For a better understanding of the present invention, present disclosure is further elucidated with reference to embodiment, but the present invention
Content is not limited solely to the following examples.Those skilled in the art can be made various changes or modifications to the present invention, these
The equivalent form of value is equally within the scope of claims listed by the application are limited.
Present design is vehicular 110kV mobile substation, and whole system is using 1 time 110kV inlet wire;Main transformer is adopted
With 1 capacity 20MVA three-phase double winding self-cooled zero-load voltage-variable transformer;10kV single bus schemes, 4 times (concrete outlets of outlet
Return number to adjust, between 3-6 is returned), 1 station becomes, 1 10kV voltage transformer;Unattended substation is pressed by transformer station
Model Design, using intelligent Microcomputer Protection and integrated automatic monitoring system, and is equipped with Active Eyes.Match somebody with somebody simultaneously
Standby 3000kVA reactive compensation systems, 400kVA diesel generating sets, prepared auto restart switching switch.
Whole system adopts modular design, 110kV transformer stations various pieces function has been carried out modularity and has been set
Meter, takes into account the convenient transport of design philosophy of miniaturized compact.Modules both can be used alone, it is also possible to according to electrical network need
Flexible combination is asked to form various powering solutions.110kV power systems are divided into into several standalone features according to difference in functionality
Vehicle module, formed 5 modules:No. 1 change electric car, No. 2 distribution trolleys, No. 3 prepared auto restart cars, No. 4 reactive-load compensation cars, No. 5 generatings
Car, constitute may be selected, movably cover send out defeated change distribution links comprehensive powering solution.
110kV electric pressures whole system adopts modular design, and 110kV transformer stations various pieces function is entered
Modularized design is gone, the standalone feature of each module is realized on the platform trailer of standard, takes into account miniaturized compact and exempt from
The design philosophy of maintenance, single mode block length are less than or equal to 13 meters, and width is less than or equal to 3 meters, highly less than or equal to 4.2 meters, convenient
Transport.
Armamentarium energy durable, what satisfaction should be able to be typically met as a complete product under actual operating mode
All require.High pressure equipment lightweight structure is compact, and weight meets highway utmost transportation administrative provisions with overall dimensions, rationally excellent
Change device parameter, reduce weight, reduce volume;All of equipment is easily installed, dismantles and checks.The carrier car of mobile substation
Body adopts high-quality steel, and advanced technology, the strict manufacturing are formed.Rationally, dependable performance is easy to operate for complete vehicle structure,
It is aesthetic in appearance.
As shown in figure 1, whole system point five functional module is designed.Respectively:
No. 1 change electric car:110kV spark gaps, HGIS, main transformer etc.;
No. 2 distribution trolleys:10kV switch cubicles, comprehensive Self-Protection Subsystem etc.;
No. 3 prepared auto restart cars:Electronic power switch;
No. 4 reactive-load compensation cars:SVG static var compensation systems;
No. 5 generator car:Diesel generating set.
No. 1 change electric car places the equipment such as 110kV spark gaps, HGIS, transformator;Other are characterised by transformator using fixation
Voltage ratio 110kV:10.5kV, transformer device structure becomes simple, and reliability is improved, and volume significantly can also reduce;To become
Transformer design reduces the work of transformator O&M maintenance into all insulation.
No. 2 distribution trolleys place the connection cable between 10kV switch cubicles, comprehensive Self-Protection Subsystem and change electric car and distribution trolley
With drum etc.;It is characterized in that 10kV switch cubicles adopt the full sealing switch cabinet of solid insulation, all charging members and switch are hermetically sealed
In an epoxy modeling fat housing, without any gas in housing.Whole switching device does not receive external environment influence, it is ensured that operation can
By property and Personal Safety, and realize non-maintaining.
No. 3 prepared auto restart cars place the alternate power autocast system that solid converting switch is constituted;Solid converting switch is adopted
With IGCT and the mode of mechanical switch parallel running, when the power supply powered goes wrong (when voltage dip or interruption),
(15 milliseconds of switching time) can be switched fast to another road normal power source, it is ensured that sensitive equipment is not received voltage dip or interrupts shadow
Ring.
No. 4 reactive-load compensation cars place SVG static var compensation systems;It is (static using a kind of densification tower structure SVG
Synchronous compensator), with small volume, convenient for installation and maintenance, electrical insulation properties are good, the advantages of, it is adaptable to internal container is pacified
Dress.
No. 5 generator car place diesel generating set.Adopt output voltage for 10kV diesel generating set, realize with No. 2
Become electric car, the docking of No. 3 prepared auto restart cars.
Standard interface technology between the modules of mobile substation, specification define the connection side of all kinds of cables and optical cable
Formula, realizes that each functional module is flexible, quick combination application.
The combination application scheme of functions module is as follows:
1) replace bed rearrangement transformer station
As shown in Fig. 2 present design becomes electric car and 2# distribution trolleys from 1#, vehicle moving transformer station, generation are combined as
For bed rearrangement transformer station.Whole system adopts 1 time 110kV inlet wire;1 zero-load voltage-variable transformer, capacity is 20MVA;10kV is mono- female
Line wiring, 1 back into line, and 4 return back out line, and 1 station becomes, 1 10kV voltage transformer.
2) replace switching station
As shown in figure 3, present design selects 2# distribution trolleys, replace 10kV switching stations.
3) take turns transformation
As shown in figure 4, present design selects 1# distribution trolleys, can use as wheel transformation.
4) reactive-load compensation
As shown in figure 5, present design becomes electric car, 2# distribution trolleys and 4# reactive-load compensation cars, 4# reactive-load compensation cars from 1#
Reactive-load compensation is carried out to the electric power system of mobile substation.Can be become according to the voltage of user load, reactive power and power factor
Change and throw automatically upper in good time or cut off capacitor bank, the voltage of electrical network, power is returned in the range of the stable requirement of number, realize
Load or burden without work the optimal compensation, so as to improve grid voltage quality, gives full play to the efficiency for providing electric equipment, reduces power consumption.
5) prepared auto restart (important load " hot standby ")
As shown in fig. 6, present design becomes electric car, 2# distribution trolleys and 3# prepared auto restart cars from 1#, 3# prepared auto restarts car ensures
The power supply reliability of important load.
6) the direct electric power system of electromotor
As shown in fig. 7, present design selects 5# generator car, 2# distribution trolleys, can be independently-powered as emergency power supply.
Claims (8)
1. a kind of modularization intelligent mobile substation system, it is characterised in that include with standalone feature five vehicle modules,
It is respectively:No. 1 change electric car, No. 2 distribution trolleys, No. 3 prepared auto restart cars, No. 4 reactive-load compensation cars, No. 5 generator car, modules can be single
Solely use, it is also possible to form various powering solutions according to electrical network demand combinations, solution includes following several:
1) replace bed rearrangement transformer station:From No. 1 change electric car and No. 2 distribution trolleys, vehicle moving transformer station is combined as, replaces bed rearrangement
Transformer station;
2) replace switching station:No. 2 distribution trolleys are only selected, replaces 10kV switching stations;
3) take turns transformation:No. 1 distribution trolley is only selected, is used as wheel transformation;
4) reactive-load compensation:From No. 1 change electric car, No. 2 distribution trolleys and No. 4 reactive-load compensation cars, by No. 4 reactive-load compensation cars to mobile change
The electric power system in power station carries out reactive-load compensation;
5) prepared auto restart:From No. 1 change electric car, No. 2 distribution trolleys and No. 3 prepared auto restart cars, ensure important load by No. 3 prepared auto restart cars
Power supply reliability;
6) the direct electric power system of electromotor:From No. 5 generator car and No. 2 distribution trolleys, independently supply to transformer station as emergency power supply
Electricity.
2. modularization intelligent mobile substation according to claim 1 system, it is characterised in that the scale of system is 1 time
110kV inlet wires;Main transformer adopts 1 capacity 20MVA three-phase two-simulation transformer;10kV single bus schemes, outlet 4 times, 1
Stand with change, 1 10kV voltage transformer, while configuring the reactive compensation system of 3000kVA.
3. modularization intelligent mobile substation according to claim 1 system, it is characterised in that the independent work(of each module
Can realize all on the platform trailer of standard, single mode block length be less than or equal to 13 meters, width be less than or equal to 3 meters, highly less than etc.
It is in 4.2 meters, convenient to transport.
4. modularization intelligent mobile substation according to claim 1 and 2 system, it is characterised in that No. 1 change electric car is placed
110kV spark gaps, HGIS, transformer equipment;Transformator compares 110kV using fixed voltage:10.5kV.
5. modularization intelligent mobile substation according to claim 1 and 2 system, it is characterised in that No. 2 distribution trolleys are placed
Connection cable and drum between 10kV switch cubicles, comprehensive self-protecting device and change electric car and distribution trolley;10kV switch cubicles are adopted
The full sealing switch cabinet of solid insulation, all charging members and switchs hermetically sealed in epoxy modeling fat housing.
6. modularization intelligent mobile substation according to claim 1 and 2 system, it is characterised in that No. 3 prepared auto restart cars are put
Put the alternate power autocast system of solid converting switch composition;Solid converting switch adopts IGCT and mechanical switch in parallel
The mode of operation.
7. modularization intelligent mobile substation according to claim 1 and 2 system, it is characterised in that No. 4 reactive-load compensation cars
Place SVG static var compensation systems;Using a kind of densification tower structure SVG STATCOMs.
8. modularization intelligent mobile substation according to claim 1 and 2 system, it is characterised in that No. 5 generator car are placed
Diesel generating set, adopt output voltage for 10kV diesel generating set, realize with No. 2 change electric cars, No. 3 prepared auto restart cars it is right
Connect.
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CN201611072186.7A CN106602445A (en) | 2016-11-29 | 2016-11-29 | Modularized intelligent mobile transformer station system |
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CN201611072186.7A CN106602445A (en) | 2016-11-29 | 2016-11-29 | Modularized intelligent mobile transformer station system |
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CN106602445A true CN106602445A (en) | 2017-04-26 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107503526A (en) * | 2017-08-15 | 2017-12-22 | 国网山西送变电工程公司 | The imperfect string enlarging of 500kV transformer stations is complete string power cut construction method |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08140225A (en) * | 1994-11-09 | 1996-05-31 | Hitachi Ltd | Transformer station |
CN202333541U (en) * | 2011-11-22 | 2012-07-11 | 江苏精科智能电气股份有限公司 | Car-mounted mobile transformer substation |
CN103138193A (en) * | 2011-11-25 | 2013-06-05 | 沈阳昊诚电气股份有限公司 | Vehicle-mounted intensive substation |
CN206585255U (en) * | 2016-11-29 | 2017-10-24 | 国家电网公司 | A kind of modularization intelligent mobile substation system |
-
2016
- 2016-11-29 CN CN201611072186.7A patent/CN106602445A/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08140225A (en) * | 1994-11-09 | 1996-05-31 | Hitachi Ltd | Transformer station |
CN202333541U (en) * | 2011-11-22 | 2012-07-11 | 江苏精科智能电气股份有限公司 | Car-mounted mobile transformer substation |
CN103138193A (en) * | 2011-11-25 | 2013-06-05 | 沈阳昊诚电气股份有限公司 | Vehicle-mounted intensive substation |
CN206585255U (en) * | 2016-11-29 | 2017-10-24 | 国家电网公司 | A kind of modularization intelligent mobile substation system |
Non-Patent Citations (1)
Title |
---|
王颖: "银川电网110kV车载移动式变电站的应用与研究", 《银川电网110KV车载移动式变电站的应用与研究》 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107503526A (en) * | 2017-08-15 | 2017-12-22 | 国网山西送变电工程公司 | The imperfect string enlarging of 500kV transformer stations is complete string power cut construction method |
CN107503526B (en) * | 2017-08-15 | 2019-09-13 | 国网山西送变电工程有限公司 | The imperfect string enlarging of 500kV substation is complete string power cut construction method |
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Application publication date: 20170426 |