CN106684904A - Distributed type energy station electrical networking method, microgrid and middle-sized energy network - Google Patents
Distributed type energy station electrical networking method, microgrid and middle-sized energy network Download PDFInfo
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- CN106684904A CN106684904A CN201611033207.4A CN201611033207A CN106684904A CN 106684904 A CN106684904 A CN 106684904A CN 201611033207 A CN201611033207 A CN 201611033207A CN 106684904 A CN106684904 A CN 106684904A
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- 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
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
Abstract
The invention discloses a distributed type energy station electrical networking method, a microgrid and a middle-sized energy network. The distributed type energy station electrical networking method comprises the steps of establishing at least two distributed type energy station power systems within a set range into electrical modules respectively; and networking the electrical modules by an electrical interconnection technique. The microgrid comprises at least two distributed type energy stations within the set range, wherein the electrical modules obtained by modularization of the at least two distributed type energy station power systems are connected through the electrical interconnection technique. By adoption of the scheme, electrical connection between the distributed type energy stations can be realized.
Description
Technical field
The present invention relates to electric and electronic technical field, the method for the electric networking of more particularly to a kind of distributed busbar protection and micro-
Electrical network, medium-sized energy network.
Background technology
Advanced subject of the energy management research of micro-capacitance sensor in electric and electronic technical field, resolves energy management problem
It is the basis for realizing system stable operation and optimized operation.Current Chinese scholars are from micro-grid structure, distributed energy
The multiple fields such as model, energy-storage system, running protection have carried out numerous studies and discussion.
The distributed energy structure that prior art is constituted substantially about various energy resources form, and then formation collection generating set,
The micro-capacitance sensor structure that photovoltaic generation, wind power generation and other means of non-electric energy sources are integrated, equivalent to comprehensive energy station, but prior art
Deficiency be：Energy networking between each distributed busbar protection is confined to the interconnection of various means of non-electric energy sources, lacks electric interconnection,
Each module can only carry out isolated power grid.
The content of the invention
The invention provides the method and micro-capacitance sensor, medium-sized energy network of a kind of electric networking of distributed busbar protection, to
So that can be electrically connected between distributed busbar protection, the stable and high effective operation of micro-capacitance sensor is finally realized.
The method for embodiments providing a kind of electric networking of distributed busbar protection, including：
The power system of at least two distributed busbar protections in set point is built into into respectively an electrical module；
Each electrical module is carried out into networking using electrical interconnection technology.
It is preferred that the electrical interconnection technology includes being electrically connected by high-tension line and electric switch.
It is preferred that the electric switch is network interconnecting circuit cabinet.
It is preferred that each electrical module is carried out into networking using electrical interconnection technology, specifically include：
Carried out by two network interconnecting circuit cabinets and high-tension line between the high voltage bus of two adjacent electrical modules
Connection；
If the arbitrary electrical module in two adjacent electrical modules adopts double-cricuit supply, in the double loop
It is attached by a network interconnecting circuit cabinet and high-tension line between the double loop bus of power supply.
It is preferred that the electrical module includes following any device or its combination：Generating set, energy storage device, civil power,
Reverse-power protection device, electric degree bidirectional measuring table, dispatching communication module.Wherein, electric degree bidirectional measuring table is in two electrical modules
When need two pieces：One piece of incoming line cabinet, one piece of network interconnecting circuit cabinet；Three modules need three pieces when forming looped network：One piece of incoming line cabinet,
Each module both sides breaker cabinet is each one piece.
It is preferred that after described each electrical module carries out networking, further including：
The generating set and/or energy storage device of each electrical module and/or civil power can be remaining electrical module
Load provide power supply.
It is preferred that after described each electrical module carries out networking, further including：
The grid-connected line access point of generating set is standby each other between described each electrical module, and each electrical module generates electricity
Side and user side grid integration point are standby each other, and the reverse-power protection device of each electrical module is standby each other.
It is preferred that after described each electrical module carries out networking, further including：
The dispatching communication module of each electrical module is standby each other or is in communication with each other.
It is preferred that the distributed busbar protection possesses islet operation condition.
A kind of micro-capacitance sensor is embodiments provided, including：At least two distributed busbar protections in set point, institute
The each electrical module obtained after the power system blockset for stating at least two distributed busbar protections is connected by electrical interconnection technology.
It is preferred that each electrical module is connected by electrical interconnection technology, specially：The high pressure of each electrical module
Bus is connected by high-tension line with electric switch.
It is preferred that the electric switch is network interconnecting circuit cabinet.
It is preferred that having two network interconnecting circuit cabinets, the double back of electrical module between the high voltage bus of each electrical module
There is a network interconnecting circuit cabinet between the bus of road.
A kind of medium-sized energy network is embodiments provided, including：Distribution in set point described at least two
Formula energy source station power system blockset, is connected by electrical interconnection technology.Specifically, two are at least included electrically in set point
Module, micro-capacitance sensor, micro-capacitance sensor described at least two is connected by electrical interconnection technology.
The present invention has the beneficial effect that：In the scheme of the embodiment of the present invention, by least two distributions in set point
The power system of formula energy source station is built into respectively an electrical module, is then entered each electrical module using electrical interconnection technology
Row networking, three constitute looped network with upper module.Using this programme so that electrical interconnection can be carried out between distributed busbar protection.
Description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the present invention, this
Bright schematic description and description does not constitute inappropriate limitation of the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 is the method implementation process diagram of the electric networking of distributed busbar protection in the embodiment of the present invention；
Fig. 2 is micro-capacitance sensor electric topology schematic diagram in the embodiment of the present invention.
Specific embodiment
Inventor notices during invention：
Distributed energy obtains providing powerful support for and accepting for country as the useful supplement and environment-friendly advantage of national grid.It is right
In the current grid-connected big principle do not surfed the Net of combustion gas cold, heat and electricity triple supply energy source station, energy source station is by non-electrical such as photovoltaic, underground heat, ocean energies
Can it is integrated and between energy source station networking realize, but lack energy source station between electric energy networking practice.
The deficiencies in the prior art are：Each distributed busbar protection is confined to the interconnection of various means of non-electric energy sources in energy microgrid,
Lack electric interconnection.
And, even if distributed busbar protection project is refined by stages, but as newly-built city integrated commercial circle, big garden, number
According to the energy supplying system in the regions such as center, relative to customer charge increase process be substantially it is relatively advanced, it will cause with
Lower problem：
(1) single energy source station generating set, the capacity short-term (half a year or a year or so) of energy storage device seem bigger than normal, very
The minimum start loading condiction of generating set can not be met to electric load, causes generating set to start shooting, so that energy source station
The process function route of electricity determining by cold and the overall plan of generating set electric power grid integration can all be subject to great restriction and impact；
(2) energy source station project delivery initial stage, utilization rate of equipment and installations is low, and rate of return on investment is low；
(3) generating set underload rate operation for a long time more than 50%, non-economy operation, long-term fallback causes to send out
Group of motors equipment and supporting waste-heat recovery device service life reduction；
(4) user side and generator side of energy source station is limited to 1 grid integration point, while the generator side of energy source station is only
There is a grid entry point, after these three arbitrary point failures of point, generating set no longer can grid integration；Grid-connected reliability is not high.
Based on this, micro- electricity that the present invention proposes a kind of scheme of the electric networking of distributed busbar protection and formed according to the program
Net, medium-sized energy network, illustrate below in conjunction with the accompanying drawings to the specific embodiment of the present invention.
Fig. 1 is the method implementation process diagram of the electric networking of distributed busbar protection, as illustrated, following step can be included
Suddenly：
Step 101, the power system of at least two distributed busbar protections in set point is built into into respectively an electricity
Gas module；
Step 102, each electrical module is carried out into networking using electrical interconnection technology.
For the enforcement of step 101, set point refers to the optimal economic distance range between each energy source station, actually should
Can be determined by comprehensively measuring and calculating and planning with.By the power train of at least two distributed busbar protections in set point
System carries out Modularized Design for Electricity, and an electrical module is configured to respectively.The selection of distributed busbar protection can unite before construction
It is optimal to be finally reached each side comprehensive assessment by being redesigned for Journal of Sex Research after one planning or construction.
In enforcement, the electrical module includes following any device or its combination：Generating set, energy storage device, civil power,
Reverse-power protection device, electric degree bidirectional measuring table, dispatching communication module.Wherein, electric degree bidirectional measuring table is in two electrical modules
When need two pieces：One piece of incoming line cabinet, one piece of network interconnecting circuit cabinet；Three modules need three pieces when forming looped network：One piece of incoming line cabinet,
Each module both sides breaker cabinet is each one piece.
Specifically, the high-pressure side of modular each distributed busbar protection switchgear house is grid-connected by generating set, generating set
Cabinet, same period PT cabinet (voltage transformer cabinet), energy storage device, outgoing line cabinet composition, add reverse-power protection device, electric degree bidirectional measuring
Table, dispatching communication module, user 10KV distribution systems constitute a complete module.Sight path distance may include that optical fiber is poor in module
The devices such as dynamic protection device.
The each device in above-mentioned module is introduced below.
Generating set, by the energy conversion of other forms into electric energy plant equipment；
Generating set grid-connection cabinet, when two and above generating set are united when powering to load, or when one
Or multiple stage generating set be united to electrical network power when, after generator connecting in parallel with system cabinet is installed additional respectively, system can be only achieved connection
Close the requirement of power supply；
Same period PT cabinet, realizes the device of generating set and the operation of electrical network synchronization paralleling；
Energy storage device, mainly batteries to store energy, the energy storage in civil power paddy electricity can be released in civil power peak value or municipal power failure
Leave with the electricity of storage；
Outgoing line cabinet, from bus the switch cubicle of electric energy is distributed；
Reverse-power protection device, is to realize the protection device that generator connecting in parallel with system is not surfed the Net, not to electrical network output.Sending out
Motor when 50% rate of load condensate is run, all the time some load by grid integration system upper end mains-supplied, this numerical value
It is set as rated output of generating set>5~10%, when mains-supplied load<During this setting numerical value, reverse-power protection device is moved
Make to jump grid integration switch, generating set off-the-line；
Electric energy bidirectional measuring table, can measure electromotor to the electricity of upper end institute access system output, also can be in electromotor
The electricity that electromotor institute grid-connected system internal loading consumes civil power is measured when not starting；
Fiber differential protection device, the short-term road of of length no more than 10KM constitutes optical-fiber longitudinal difference using optical fiber as passage
Dynamic protection.
For the enforcement of step 102, each electrical module is constituted into one by electrical interconnection technology and is existed containing electrical interconnection
Interior micro-capacitance sensor, realizes " the Internet+" of electric energy in micro-capacitance sensor.
In enforcement, the electrical interconnection technology includes being electrically connected by high-tension line and electric switch.
Specifically, each electrical module is constituted one containing electricity by each energy source station by ad eundem high-tension line and electric switch
Gas is interconnected at interior medium-sized energy network.
In enforcement, the electric switch is network interconnecting circuit cabinet.
Specifically, can be using network interconnecting circuit cabinet as electric switch, network interconnecting circuit cabinet is to play contact effect
Switch.Contact cabinet also known as mother cabinet, contact cabinet then therefrom separated (the different electricity of two-way when two-way power supply power transmission simultaneously
Source, usual split operation, mother No switching on), when wherein certain one end power supply has a power failure or when power-off because of accident, get in touch with cabinet
Then connect, to ensure another road power supply under load electricity consumption, when trouble power loop possesses Power resumption condition, then get in touch with cabinet break
Open.High pressure contact cabinet divide-shut brake grid switching operation in actual station, between standing, all should be carried out by scheduling.
In enforcement, each electrical module is carried out into networking using electrical interconnection technology, specifically included：
Carried out by two network interconnecting circuit cabinets and high-tension line between the high voltage bus of two adjacent electrical modules
Connection；
If the arbitrary electrical module in two adjacent electrical modules adopts double-cricuit supply, in the double loop
It is attached by a network interconnecting circuit cabinet and high-tension line between the double loop bus of power supply.
Specifically, there are two network interconnecting circuit cabinets between the high voltage bus of two adjacent electrical modules, by high-voltage line
Road is attached, if electrical module adopts double-cricuit supply, a network interconnecting circuit cabinet is increased between the bus of double loop, and
It is attached by high-tension line.Between electrical module using double-cricuit supply and the electrical module using Semi-loop power source
Network interconnecting circuit cabinet can be shared, and be increased without.
The introduction of lower mask body is after distributed busbar protection networking in set point, and each electric device is electric by composition
The Internet can mutually throw mutually cut, it is standby each other.
In enforcement, after described each electrical module carries out networking, can further include：
The generating set and/or energy storage device of each electrical module and/or civil power can be remaining electrical module
Load provide power supply.
Specifically, energy source station build initial operation stage, energy source station generating set, energy storage device, civil power can a station drive it is many
The electrical load stood, improves the rate of load condensate of the generating set that puts into operation, while avoid the long-term fallback of other generating sets leading
Cause the problem of generator set device and supporting waste-heat recovery device service life reduction.Put into operation the later stage in energy source station construction, generating set,
Energy storage device, civil power can be standby each other, improve power supply, the energy supply reliability of each energy source station.When multiple stage generating set, multiple
Energy storage device, the electricity went off for multichannel civil power, as long as also one energy source station can normally run, it is possible to for it is modular electrically
Other in the Internet any one energy source station loads provides power supply.
In enforcement, after described each electrical module carries out networking, can further include：
Described each electrical module interconnection is mutually standby, and the Generation Side of each electrical module, user side grid integration point are mutual
For standby, reverse-power protection device of each electrical module etc. is standby each other.
Specifically, when energy source station is grid-connected, in the case that generating set capacity is close to, electric power grid integration point can be each other
It is standby, it is not unique by user side grid integration point and its produce and grid-connected can not be restricted after failure.Namely connect when user side is grid-connected
When entering point failure, the electric power grid integration point of another energy source station can be switched to, then be accessed by the user side grid integration point
Bulk power grid.And be now that interconnection is mutually standby between energy source station module high voltage electrical system.
By setting adjustment, reverse-power protection device can be standby each other, improves utilization rate of equipment and installations.
In enforcement, after described each electrical module carries out networking, further include：
The dispatching communication module of each electrical module is standby each other or is in communication with each other.
Specifically, the dispatching communication module of modular each energy source station is standby each other or is in communication with each other, and establishes higher more
Reliable communication, management and running.
In enforcement, the distributed busbar protection possesses islet operation condition premise.
Specifically, above-mentioned each electric device by composition electrical interconnection net can mutually throw mutually cut, standby each other, Ke Yi
Distributed busbar protection possesses to be implemented under the premise of islet operation condition.
The micro-capacitance sensor formed according to the electric network-building method of above-mentioned distributed busbar protection is described below.
Micro-capacitance sensor includes：At least two distributed busbar protections in set point, the electricity of at least two distributed busbar protections
The each electrical module obtained after Force system modularity is connected by electrical interconnection technology.
Specifically, set point refers to optimal economic, the technology distance scope between each energy source station, needs in actual applications
Will be through comprehensively measuring and calculating and planning.The power system of at least two distributed busbar protections in modularity set point, obtains
Each electrical module by electrical interconnection technology be connected, composition one containing electrical interconnection in interior micro-capacitance sensor, realize micro- electricity
" the Internet+" of electric energy in net.
In enforcement, each electrical module is connected by electrical interconnection technology, specially：The high pressure of each electrical module
Bus is connected by high-tension line with electric switch.
Specifically, the high voltage bus of each electrical module can be connected by high-tension line with electric switch.
In enforcement, the electric switch is network interconnecting circuit cabinet.
Specifically, the high voltage bus of each electrical module can be connected by high-tension line with network interconnecting circuit cabinet, and contact is disconnected
Road device cabinet is the switch for playing contact effect.
In enforcement, respectively there are a network interconnecting circuit cabinet, electric mould in each electrical module high voltage bus both sides at a distance
There is a network interconnecting circuit cabinet between the double loop bus of block.
Specifically, respectively there is a network interconnecting circuit cabinet high voltage bus both sides of each electrical module, are carried out by high-tension line
Connection, if electrical module adopts double-cricuit supply, has a network interconnecting circuit cabinet, by high-tension line between the bus of double loop
It is attached.
In enforcement, the electrical module includes following any device or its combination：Generating set, energy storage device, civil power,
Reverse-power protection device, electric degree bidirectional measuring table, dispatching communication module, wherein, electric degree bidirectional measuring table is in two electrical modules
When need two pieces：One piece of incoming line cabinet, one piece of network interconnecting circuit cabinet；Three modules need three pieces when forming looped network：One piece of incoming line cabinet,
Each module both sides breaker cabinet is each one piece.
With regard to the component devices of electrical module, in the method for the electric networking of above-mentioned distributed busbar protection it is stated that this
Place repeats no more.
In order to be more clearly understood that the present invention, illustrated with specific embodiment below.
Fig. 2 is micro-capacitance sensor electric topology schematic diagram, as illustrated, at least 4 electrical modules constitute micro-capacitance sensor, each is electric
Module includes：Civil power, user's 10Kv buses, user side access cabinet, energy source station 10Kv buses, generating set, energy storage device, the same period
Cabinet etc., is electrically connected between the high voltage bus of two neighboring electrical module by ad eundem high-tension line and contact cabinet, real
The networking of electric energy between energy source station is showed.In being embodied as, electrical module can also include reverse-power protection device, two-way electricity
Energy gauge table etc..Reverse-power protection device is installed between civil power inlet wire and user's 10Kv buses, and bidirectional electric energy gauge table is installed additional
In the contact cabinet that user side accesses cabinet and each module.
New electrical module can be increased between per two neighboring electrical module, for example：3# energy source stations electrical module and 4#
Dotted portion visual nearby (3 km) actual energy source station quantity increases new electrical module between energy source station electrical module.
In actual applications, the selection of distributed busbar protection is needed through comprehensively measuring and calculating, planning, determines best-of-breed technology, Jing
Ji distance range, it is to avoid the problems such as high-tension line transmission losses is excessive, high-tension line construction cost is too high.
Accordingly, a kind of medium-sized energy network is additionally provided in the embodiment of the present invention, including：In set point at least two
The micro-capacitance sensor of individual electrical module is connected by electrical interconnection technology.
In micro-capacitance sensor, medium-sized energy network, it is possible to achieve the networking of electric energy, each electric device can also mutually be thrown mutually
Cut, it is standby each other, it is specifically described below.
(1) initial operation stage is built in micro-capacitance sensor, the generating set of an energy source station, civil power, energy storage device can in micro-capacitance sensor
To drive the operation of the equipment of remaining energy source station, the rate of load condensate of the generating set that puts into operation is improve, while avoiding other electromotors
Group underrun；
(2) put into operation the later stage in micro-capacitance sensor construction, the generating set of energy source station, civil power, energy storage device can be mutual in micro-capacitance sensor
For standby, as long as there is an energy source station normally to run, just power supply can be provided for the load of remaining energy source station so that each energy source station is supplied
Electric reliability is greatly improved；
(3) in the case that each energy source station generating set capacity is close in micro-capacitance sensor, electric power grid integration point can be each other
It is standby, not by user side grid integration point is unique and its failure after grid-connected can not be restricted；Such as one of energy source station user side
Grid integration point failure, be directly switch to another energy source station user side grid integration point of normal operation carry out it is grid-connected；
(4) the reverse-power protection device of each energy source station can be standby each other in micro-capacitance sensor, improves utilization rate of equipment and installations.
In sum, in the scheme of the embodiment of the present invention, by least two distributed busbar protections in set point
Power system is built into respectively an electrical module；Each electrical module is carried out into networking using electrical interconnection technology, is formed micro-
Electrical network, medium-sized energy network.Using this programme so that can be electrically connected between distributed busbar protection, micro-capacitance sensor office is solved
It is limited to after the combination of various energy resources the interconnection for being only means of non-electric energy sources, lacks the problem of electric interconnection.
Obviously, those skilled in the art can carry out the essence of various changes and modification without deviating from the present invention to the present invention
God and scope.So, if these modifications of the present invention and modification belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising these changes and modification.
Claims (15)
1. the method for the electric networking of a kind of distributed busbar protection, it is characterised in that include：
The power system of at least two distributed busbar protections in set point is built into into respectively an electrical module；
Each electrical module is carried out into networking using electrical interconnection technology.
2. method according to claim 1, it is characterised in that the electrical interconnection technology is included by high-tension line and electricity
Air cock is electrically connected.
3. method according to claim 2, it is characterised in that the electric switch is network interconnecting circuit cabinet.
4. method according to claim 3, it is characterised in that each electrical module is carried out into group using electrical interconnection technology
Net, specifically includes：
It is attached by two network interconnecting circuit cabinets and high-tension line between the high voltage bus of two adjacent electrical modules；
If the arbitrary electrical module in two adjacent electrical modules adopts double-cricuit supply, in the double-cricuit supply
Double loop bus between be attached by a network interconnecting circuit cabinet and high-tension line.
5. according to the arbitrary described method of Claims 1-4, it is characterised in that the electrical module includes following any device
Or its combination：Generating set, energy storage device, civil power, reverse-power protection device, electric degree bidirectional measuring table, dispatching communication module,
Wherein, electric degree bidirectional measuring table is two pieces in two electrical modules：One piece of incoming line cabinet, one piece of network interconnecting circuit cabinet；Three moulds
Block is three pieces when forming looped network：One piece of incoming line cabinet, each module both sides breaker cabinet is each one piece.
6. method according to claim 5, it is characterised in that after described each electrical module carries out networking, further
Including：
The generating set and/or energy storage device of each electrical module and/or civil power are that the load of remaining electrical module is carried
Power supply source.
7. method according to claim 5, it is characterised in that after described each electrical module carries out networking, further
Including：
The grid-connected line access point of generating set is standby each other between described each electrical module, the user side of each electrical module
Grid integration point is standby each other, and the reverse-power protection device of each electrical module is standby each other.
8. method according to claim 5, it is characterised in that after described each electrical module carries out networking, further
Including：
The dispatching communication module of each electrical module is standby each other or is in communication with each other.
9. according to the arbitrary described method of claim 6 to 8, it is characterised in that the distributed busbar protection possesses islet operation
Condition.
10. the micro-capacitance sensor that a kind of method according to claim 1 to 9 is arbitrary is formed, including：In set point at least two
Individual distributed busbar protection, it is characterised in that what is obtained after the power system blockset of at least two distributed busbar protection is each
Electrical module is connected by electrical interconnection technology.
11. micro-capacitance sensors according to claim 10, it is characterised in that each electrical module passes through electrical interconnection technology phase
Even, specially：The high voltage bus of each electrical module is connected by high-tension line with electric switch.
12. micro-capacitance sensors according to claim 11, it is characterised in that the electric switch is network interconnecting circuit cabinet.
13. micro-capacitance sensors according to claim 12, it is characterised in that the high voltage bus both sides of each electrical module respectively have
One network interconnecting circuit cabinet, there is a network interconnecting circuit cabinet between the double loop bus of electrical module.
14. according to the arbitrary described micro-capacitance sensor of claim 10 to 13, it is characterised in that the electrical module includes following arbitrary
Device or its combination：Generating set, energy storage device, civil power, reverse-power protection device, electric degree bidirectional measuring table, dispatching communication
Module, wherein, electric degree bidirectional measuring table is two pieces in two electrical modules：One piece of incoming line cabinet, one piece of network interconnecting circuit cabinet；Three
Individual module is three pieces when forming looped network：One piece of incoming line cabinet, each module both sides breaker cabinet is each one piece.
15. a kind of medium-sized energy networks, it is characterised in that include：At least include two electrical modules, right in set point
10 to 14 arbitrary described micro-capacitance sensors are required, micro-capacitance sensor described at least two is connected by electrical interconnection technology.
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| CN106684904B (en) | 2019-07-16 |
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