CN109462259A - Configuration analysis method, device, equipment and the medium of marine wind electric field isolated network state - Google Patents
Configuration analysis method, device, equipment and the medium of marine wind electric field isolated network state Download PDFInfo
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- CN109462259A CN109462259A CN201811586969.6A CN201811586969A CN109462259A CN 109462259 A CN109462259 A CN 109462259A CN 201811586969 A CN201811586969 A CN 201811586969A CN 109462259 A CN109462259 A CN 109462259A
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Classifications
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- H02J3/386—
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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
- H02J3/388—Islanding, i.e. disconnection of local power supply from the network
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- 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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
Abstract
This application involves configuration analysis method, device, computer equipment and the storage mediums of a kind of marine wind electric field isolated network state.The described method includes: obtaining booster stations load capacity of the offshore wind farm unit in the blower load capacity and offshore boosting station under isolated network state under isolated network state；Preliminary blower access style is determined according to the rated capacity of blower load capacity, booster stations load capacity and accessory power supply to be configured；It obtains under the Run-time scenario of the corresponding reactor configuration mode of reactor to be configured of preliminary blower access style and preset capacity, the demand reactive capability of accessory power supply to be configured；The nominal reactive capacity of reactive capability and accessory power supply to be configured determines preferred blower access style and corresponding reactor configuration mode in preliminary blower access style according to demand, obtains the accessory power supply allocation plan of marine wind electric field isolated network state.The applicability of accessory power supply configuration can be improved using the application.
Description
Technical field
This application involves Electric Design technical fields, more particularly to a kind of Allocation Analysis of marine wind electric field isolated network state
Method, apparatus, equipment and medium.
Background technique
With the attention to renewable energy, offshore wind farm industry is rapidly developed.In marine wind electric field, offshore wind farm unit
It issues electric energy and is collected to offshore boosting station, offshore boosting station will be delivered to land centralized control center after electric energy boosting, pass through electricity
Net is conveyed to user's use.
When accident occurs for marine wind electric field high pressure submitting submarine cable or typhoon causes land submitting overhead transmission line failure,
The offshore boosting station and offshore wind farm unit of marine wind electric field will lose to be contacted with external electrical network, is in isolated network state.It is true
Guarantor's offshore wind farm unit, offshore boosting station run safe and reliable, it usually needs configure accessory power supply, example for marine wind electric field
Such as diesel generating set, the ancillary equipment in offshore wind farm unit and offshore boosting station is made in such a way that the accessory power supply is powered
Working condition can be maintained under isolated network state.However, traditional accessory power supply is configured according to artificial experience, exist
The low problem of applicability.
Summary of the invention
Based on this, it is necessary in view of the above technical problems, provide a kind of sea turn that can be improved power supply auxiliary applicability
Configuration analysis method, device, equipment and the medium of electric field isolated network state.
A kind of configuration analysis method of marine wind electric field isolated network state, comprising:
Obtain offshore wind farm unit under isolated network state blower load capacity and offshore boosting station under isolated network state
Booster stations load capacity；
It is determined according to the rated capacity of the blower load capacity, the booster stations load capacity and accessory power supply to be configured
Preliminary blower access style；
It obtains in the corresponding reactor configuration side of reactor to be configured of the preliminary blower access style and preset capacity
Under the Run-time scenario of formula, the demand reactive capability of the accessory power supply to be configured；
The preliminary wind is determined according to the nominal reactive capacity of the demand reactive capability and the accessory power supply to be configured
Preferred blower access style and corresponding reactor configuration mode in machine access style, obtain marine wind electric field isolated network state
Accessory power supply allocation plan.
A kind of Allocation Analysis device of marine wind electric field isolated network state, comprising:
Load capacity obtains module, for obtaining blower load capacity and sea of the offshore wind farm unit under isolated network state
Booster stations load capacity of the booster stations under isolated network state；
Access style determining module, for according to the blower load capacity, the booster stations load capacity and to be configured
The rated capacity of accessory power supply determines preliminary blower access style；
Reactive capability obtains module, for obtaining the reactance to be configured in the preliminary blower access style and preset capacity
Under the Run-time scenario of the corresponding reactor configuration mode of device, the demand reactive capability of the accessory power supply to be configured；
Allocation plan determining module, for the specified nothing according to the demand reactive capability and the accessory power supply to be configured
Power capacity amount determines preferred blower access style and corresponding reactor configuration mode in the preliminary blower access style, obtains
The accessory power supply allocation plan of marine wind electric field isolated network state.
A kind of computer equipment, including memory and processor, the memory are stored with computer program, the processing
Device performs the steps of when executing the computer program
Obtain offshore wind farm unit under isolated network state blower load capacity and offshore boosting station under isolated network state
Booster stations load capacity；
It is determined according to the rated capacity of the blower load capacity, the booster stations load capacity and accessory power supply to be configured
Preliminary blower access style；
It obtains in the corresponding reactor configuration side of reactor to be configured of the preliminary blower access style and preset capacity
Under the Run-time scenario of formula, the demand reactive capability of the accessory power supply to be configured；
The preliminary wind is determined according to the nominal reactive capacity of the demand reactive capability and the accessory power supply to be configured
Preferred blower access style and corresponding reactor configuration mode in machine access style, obtain marine wind electric field isolated network state
Accessory power supply allocation plan.
A kind of computer readable storage medium, is stored thereon with computer program, and the computer program is held by processor
It is performed the steps of when row
Obtain offshore wind farm unit under isolated network state blower load capacity and offshore boosting station under isolated network state
Booster stations load capacity；
It is determined according to the rated capacity of the blower load capacity, the booster stations load capacity and accessory power supply to be configured
Preliminary blower access style；
It obtains in the corresponding reactor configuration side of reactor to be configured of the preliminary blower access style and preset capacity
Under the Run-time scenario of formula, the demand reactive capability of the accessory power supply to be configured；
The preliminary wind is determined according to the nominal reactive capacity of the demand reactive capability and the accessory power supply to be configured
Preferred blower access style and corresponding reactor configuration mode in machine access style, obtain marine wind electric field isolated network state
Accessory power supply allocation plan.
Configuration analysis method, device, computer equipment and the storage medium of above-mentioned marine wind electric field isolated network state obtain sea
Booster stations load capacity of the upper Wind turbines in the blower load capacity and offshore boosting station under isolated network state under isolated network state
Afterwards, determine that preliminary blower accesses according to the rated capacity of blower load capacity, booster stations load capacity and accessory power supply to be configured
Type；Then the reactor to be configured corresponding reactor configuration mode in preliminary blower access style and preset capacity is obtained
Under Run-time scenario, the demand reactive capability of accessory power supply to be configured, the volume of reactive capability and accessory power supply to be configured according to demand
Determine reactive capability and determine preferred blower access style and corresponding reactor configuration mode in preliminary blower access style, obtains
The accessory power supply allocation plan of marine wind electric field isolated network state.In this way, by the load capacity and reactor under isolated network state
Configuration analyzed, binding analysis come realize for marine wind electric field accessory power supply to be configured use when blower access class
The configuration of type and reactor is set, obtained due to having comprehensively considered operating condition of the marine wind electric field under isolated network state
Accessory power supply allocation plan applicability is high, so that the applicability configured according to accessory power supply allocation plan is high.
Detailed description of the invention
Fig. 1 is the flow diagram of the configuration analysis method of marine wind electric field isolated network state in one embodiment；
Fig. 2 is the flow diagram of the configuration analysis method of marine wind electric field isolated network state in another embodiment；
Fig. 3 is the emulation isoboles of marine wind electric field isolated network state in an application examples；
Fig. 4 is the structural schematic diagram of the Allocation Analysis device of marine wind electric field isolated network state in one embodiment；
Fig. 5 is the internal structure chart of computer equipment in one embodiment.
Specific embodiment
It is with reference to the accompanying drawings and embodiments, right in order to which the objects, technical solutions and advantages of the application are more clearly understood
The application is further elaborated.It should be appreciated that specific embodiment described herein is only used to explain the application, not
For limiting the application.
In one embodiment, as shown in Figure 1, providing a kind of configuration analysis method of marine wind electric field isolated network state,
It is applied to be illustrated for terminal in this way, comprising the following steps:
S110: blower load capacity and offshore boosting station of the offshore wind farm unit under isolated network state are obtained in isolated network state
Under booster stations load capacity.
Blower load capacity refers to the load that offshore wind farm unit is needed in isolated network state；Booster stations load capacity refers to sea
The load that upper booster stations need under isolated network state.Specifically, terminal can receive the blower load capacity and liter of user's input
Pressure station load capacity, is also possible to terminal by the way that required load condition is divided under isolated network state to offshore wind farm unit
Analysis obtains blower load capacity, by the way that offshore boosting station, required load condition is analyzed and risen under isolated network state
Pressure station load capacity.
S130: it is determined just according to the rated capacity of blower load capacity, booster stations load capacity and accessory power supply to be configured
Walk blower access style.
Accessory power supply to be configured is to need to provide the equipment of load under isolated network state for marine wind electric field, for example, can be with
It is diesel generating set.Preliminary blower access style, which refers to, gives sea turn motor using accessory power supply to be configured under isolated network state
The method of salary distribution of group power supply, for example, preliminary blower access style may include whole blower accesses, the access of half blower etc..Tool
Body, terminal can by the case of analyzing a variety of blowers accesses, the rated capacity of accessory power supply to be configured whether meet blower
The case where load capacity and booster stations load capacity, to determine preliminary blower access style.
S150: it obtains in the corresponding reactor configuration side of reactor to be configured of preliminary blower access style and preset capacity
Under the Run-time scenario of formula, the demand reactive capability of accessory power supply to be configured.
Preset capacity can be equal to the rated capacity of the reactor to be configured actually used.Preliminary blower access style and electricity
Anti- device configuration mode can there are many, a kind of a kind of arrange in pairs or groups reactor configuration mode correspondence of preliminary blower access style obtains one kind
Run-time scenario.Specifically, the demand reactive capability under the available different Run-time scenarios of terminal.It is artificial defeated that terminal can be reception
The demand reactive capability of the accessory power supply to be configured entered is also possible to obtain the demand of accessory power supply to be configured by Load flow calculation
Reactive capability.
S170: the nominal reactive capacity of reactive capability and accessory power supply to be configured determines preliminary blower access class according to demand
Preferred blower access style and corresponding reactor configuration mode in type, obtain the accessory power supply of marine wind electric field isolated network state
Allocation plan.
Preliminary blower access style can there are many, preferably blower access style belongs to preliminary blower access style.Specifically
Ground, terminal, which can be, is compared the demand reactive capability of accessory power supply to be configured and nominal reactive capacity, ties according to comparing
Fruit preferred blower access style and selection reactor configuration mode from preliminary blower access style, obtain marine wind electric field
The accessory power supply allocation plan of isolated network state.
Specifically, after the accessory power supply allocation plan for obtaining marine wind electric field isolated network state, terminal can be by auxiliary electricity
Source allocation plan is stored and/or is exported, and specifically be can be and is output to display and is shown, is also possible to be output to default
The corresponding terminal of account, so that user checks.Terminal, which can also be, sends configuration-direct to connecing according to accessory power supply allocation plan
Receiving end.
In the configuration analysis method of above-mentioned marine wind electric field isolated network state, offshore wind farm unit is obtained under isolated network state
Blower load capacity and offshore boosting station are after the booster stations load capacity under isolated network state, according to blower load capacity, boosting
Load capacity of standing and the rated capacity of accessory power supply to be configured determine preliminary blower access style；Then it obtains and is connect in preliminary blower
Enter under the Run-time scenario of the corresponding reactor configuration mode of reactor to be configured of type and preset capacity, accessory power supply to be configured
Demand reactive capability, the nominal reactive capacity of reactive capability and accessory power supply to be configured determines the access of preliminary blower according to demand
Preferred blower access style and corresponding reactor configuration mode in type obtain the auxiliary electricity of marine wind electric field isolated network state
Source allocation plan.In this way, being analyzed by the configuration to load capacity and reactor under isolated network state, binding analysis comes real
Referring now to marine wind electric field accessory power supply to be configured use when blower access style and reactor configuration set, due to comprehensive
Conjunction considers operating condition of the marine wind electric field under isolated network state, and obtained accessory power supply allocation plan applicability is high, from
And the applicability configured according to accessory power supply allocation plan is high.
In one embodiment, blower load capacity include combat typhoon scene the first load capacity and O&M scenarios second
Load capacity, booster stations load capacity include combat typhoon the third load capacity of scene and the 4th load capacity of O&M scenarios.It is lonely
Net state, can divide the O&M scenarios of the combat typhoon scene and operation and maintenance application of Anti-Typhoon application, and the difference of the two is whether examine
Consider yaw load.It combats typhoon under scene, accessory power supply to be configured provides power supply for the yaw motor of offshore wind farm unit during typhoon,
By active accommodation cabin angle, the load of offshore wind farm unit is reduced, protects offshore wind farm unit.O&M scenarios is then in orphan
During net, power supply is provided for the moisture-proof of offshore wind farm unit, dehumidifying, heating etc..
Accordingly, step S130 include: calculate it is various with reference under blower access styles, the first load capacity and third it is negative
The sum of lotus capacity obtains the total capacity of combating typhoon under the various access styles with reference to blower；It calculates and refers to blower access style various
Under, the sum of the second load capacity and the 4th load capacity, obtain the O&M total capacity under the various access styles with reference to blower；Selection
Less than or equal to combat typhoon total capacity and/or the O&M total capacity of the rated capacity of accessory power supply to be configured, combat typhoon selected
Total capacity and/or the corresponding reference blower access style of O&M total capacity are as preliminary blower access style.
It is a kind of to can be applied to scene of combating typhoon with reference to blower access style, it also can be applied to O&M scenarios；Therefore, one
With reference to blower access style corresponding combat typhoon total capacity and an O&M total capacity.Specifically, for combat typhoon total capacity with it is to be configured
The comparison selection of the rated capacity of accessory power supply, O&M total capacity select compared with the rated capacity of accessory power supply to be configured,
It can be separate and relatively select, that is, it is a kind of with reference to blower access style corresponding combat typhoon total capacity and O&M total capacity, only
Has one to meet in the two is less than or equal to rated capacity, then it is first for can choose corresponding this and refer to blower access style
Walk blower access style；It is of course also possible to be to carry out comprehensive selection for the two class data of the same race with reference to blower access style,
That is, a kind of combat typhoon total capacity and in the case that O&M total capacity all meets, this is with reference to wind with reference to blower access style is corresponding
Machine access style is just chosen as preliminary blower access style.Held by the combat typhoon blower load of scene and O&M scenarios of comprehensive analysis
Amount and booster stations load capacity, realization select preliminary blower access style from reference blower access style, will combat typhoon and O&M
It either way takes into account, the applicability of identified preliminary blower access style can be improved, to improve accessory power supply
The applicability of configuration.
In one embodiment, step S170 includes: the nominal reactive appearance that selection is less than or equal to accessory power supply to be configured
The demand reactive capability of amount；It is accessed using the corresponding preliminary blower access style of selected demand reactive capability as preferred blower
Type, using the corresponding reactor configuration mode of selected demand reactive capability as the corresponding reactance of preferred blower access style
Device configuration mode obtains the accessory power supply allocation plan of marine wind electric field isolated network state.
A kind of corresponding demand reactive capability of Run-time scenario, and Run-time scenario correspond to a kind of preliminary blower access style with
A kind of reactor configuration mode, therefore, a demand reactive capability correspond to a kind of preliminary blower access style and reactor configuration
Mode.Specifically, selection is less than or equal to the demand reactive capability of the nominal reactive capacity of accessory power supply to be configured, i.e., selected
Demand reactive capability meet be less than or equal to accessory power supply to be configured nominal reactive capacity.In this way, being accessed to preliminary blower
Type and reactor configuration mode carry out preferably, and obtained preferred blower access style and corresponding reactor configuration mode can expire
The reactive capability of the corresponding Run-time scenario of foot, applicability are high.
In one embodiment, reactor configuration mode includes shunt reactor mode and does not access reactor system.It is right
Further include being applicable in scene to determine step after Ying Di, step S170: if it is determined that reactor configuration mode be shunt reactor side
Formula then obtains under preferred blower access style and the Run-time scenario of shunt reactor mode, the short circuit of accessory power supply to be configured
The access capacity of capacity and reactor to be configured；Preferred blower is determined according to the access capacity of capacity of short circuit and reactor to be configured
The applicable scene of the corresponding accessory power supply to be configured of access style.Applicable scene includes for providing the scene of combating typhoon of yaw load
The O&M scenarios of yaw load is provided with being not used in.
Wherein, under the preferred blower access style and the Run-time scenario of shunt reactor mode, accessory power supply to be configured
The access capacity of capacity of short circuit and reactor to be configured can be also possible to terminal and various operations are stored in advance by being manually entered
The capacity of short circuit of the accessory power supply to be configured of scene and the access capacity of reactor to be configured, search preferred blower access style and
The corresponding data of the Run-time scenario of shunt reactor mode obtain accessory power supply to be configured capacity of short circuit and reactor to be configured
Access capacity.Specifically, terminal can be the access of capacity of short circuit and reactor to be configured according to accessory power supply to be configured
Capacity carries out frequency analysis, determines the applicable scene of accessory power supply to be configured.Further, it is determined that terminal is also after being applicable in scene
Configuration after can be generated including preferred blower access style and corresponding reactor configuration mode and being applicable in the optimization of scene
Allocation plan after optimization is stored and/or is exported by scheme.
By further determining that be configured auxiliary after the preferred blower access style of determination and corresponding reactor configuration mode
It helps whether power supply is used to provide yaw load to determine applicable scene, the accessory power supply of marine wind electric field isolated network state can be optimized
Allocation plan.In this way, can further improve the applicability of accessory power supply configuration.
In one embodiment, it is preferred that blower access style includes that whole blower accesses and half blower access, it is to be configured
It is waited for when the preset capacity of reactor to be configured and half blower access when the access capacity of reactor includes the access of whole blowers
Configure the capacity of reactor.
Accordingly, applicable scene determines in step, is determined according to the access capacity of capacity of short circuit and reactor to be configured excellent
Select the applicable scene of the corresponding accessory power supply to be configured of blower access style, comprising: according to capacity of short circuit and whole blower accesses
When reactor to be configured resonance cycle of preset capacity when calculating whole blowers accesses；According to capacity of short circuit and half blower
Resonance cycle when access when the calculation of capacity half blower access of reactor to be configured；When obtaining whole blower accesses respectively
Resonance cycle and half blower access when the corresponding percentage of current of resonance cycle；If whole blower accesses
When/access of half blower when percentage of current be greater than or equal to preset value, it is determined that when whole blowers access/half blower connects
The applicable scene of accessory power supply fashionable, to be configured is O&M scenarios；If when whole blowers access/access of half blower when electric current
Percentage be less than preset value, it is determined that whole blowers access when/half blower access when, accessory power supply to be configured applicable scene
For scene of combating typhoon.
Wherein, percentage of current refers to the percentage of harmonic current and fundamental current.Specifically, if whole blowers access
Percentage of current be greater than or equal to preset value, it is determined that whole blowers access when, accessory power supply to be configured applicable scene be
O&M scenarios；If percentage of current when whole blowers access is less than preset value, it is determined that when whole blowers access, to be configured auxiliary
The applicable scene for helping power supply is scene of combating typhoon.The case where when similarly accessing to general blower, is analyzed.If percentage of current is big
In or be equal to preset value, then it represents that there are higher hamonic wave, there is certain resonance possibility, to should apply to O&M scenarios.Such as
This, can be improved applicability.
Specifically, it can be and resonance cycle be calculated according to the following formula:
Wherein, f1For fundamental frequency, SBFor the capacity of short circuit of accessory power supply to be configured, QLFor the access of reactor to be configured
Capacity.
In one embodiment, after step S170, further include that protection seting mode determines step: obtaining preferred blower and connect
Enter under the Run-time scenario of type and corresponding reactor configuration mode, the short circuit current of each short dot of marine wind electric field；Determine institute
The corresponding protection seting mode of the short circuit current of acquisition.
Specifically, it is determined that can also generate after the corresponding protection seting mode of acquired short circuit current including preferred
Allocation plan after blower access style and corresponding reactor configuration mode, the advanced optimizing of protection seting mode, will be into
Allocation plan after one-step optimization is stored and/or is exported.More specifically, the allocation plan after advanced optimizing can also wrap
Include applicable scene.
Wherein, the short circuit current of each short dot of marine wind electric field can be manually entered, and be also possible to be stored in advance each
The short circuit current of each short dot under Run-time scenario searches the fortune of preferred blower access style and corresponding reactor configuration mode
The short circuit current of the corresponding each short dot of row scene.By in the preferred blower access style of determination and the configuration of corresponding reactor
After mode, further combined with Analysis of Short-Circuit Current protection seting mode, marine wind electric field isolated network state can be advanced optimized
Accessory power supply allocation plan, in this way, can further improve the applicability of accessory power supply configuration.
In one embodiment, the configuration analysis method of above-mentioned marine wind electric field isolated network state further includes that Starting mode determines
Step: it according to the rated capacity of the capacity of the matched transformer of offshore wind farm unit and accessory power supply to be configured, determines to be configured
The boot sequence of the breaker of accessory power supply, the breaker of offshore wind farm unit and offshore boosting station.
Specifically, it is determined that can also generate after boot sequence including preferred blower access style and corresponding reactor
Configuration mode, boot sequence further optimization after allocation plan, the allocation plan after further optimization is deposited
Storage and/or output.More specifically, the allocation plan further after optimization can also include being applicable in scene and protection seting side
Formula.
Wherein, every suit offshore wind farm unit of marine wind electric field is equipped with a set of transformer and breaker, offshore boosting station
It is provided with breaker.The starting that the capacity of the matched transformer of offshore wind farm unit will affect accessory power supply to be configured uses；If
The capacity of the matched transformer of offshore wind farm unit is excessive, then the excitation surge current generated when the breaker closing of offshore wind farm unit
Larger (can be 6 times -10 times of rated current), will cause greater impact to accessory power supply to be configured (such as diesel generating set),
The protection for being likely to cause configuration accessory power supply is shut down, and can not normally be started.It, can by the determination of further progress boot sequence
To advanced optimize the accessory power supply allocation plan of marine wind electric field isolated network state.Match in this way, can further improve accessory power supply
The applicability set.
Above-mentioned each embodiment can be combined.For example, with reference to Fig. 2, for a specific embodiment after combination.
It should be understood that although each step in the flow chart of Fig. 1-2 is successively shown according to the instruction of arrow,
These steps are not that the inevitable sequence according to arrow instruction successively executes.Unless expressly stating otherwise herein, these steps
Execution there is no stringent sequences to limit, these steps can execute in other order.Moreover, at least one in Fig. 1-2
Part steps may include that perhaps these sub-steps of multiple stages or stage are not necessarily in synchronization to multiple sub-steps
Completion is executed, but can be executed at different times, the execution sequence in these sub-steps or stage is also not necessarily successively
It carries out, but can be at least part of the sub-step or stage of other steps or other steps in turn or alternately
It executes.
It is illustrated below with a concrete application example.With reference to Fig. 3, the wiring analysis of marine wind electric field isolated network state is as follows:
Marine wind electric field total installation of generating capacity is 198MW.If a 220kV offshore boosting station, arrange that two 220/35kV, capacity are
The main transformer of 110MVA, the side 220kV go out single bus scheme using 2 into 1, and the side 35kV is using single mother partition wiring；Using 1 time
Tri- 3 × 500mm2XLPE of core of 220kV insulation submarine cable is sent to land centralized control center.
(1) offshore wind farm unit
Using 5.5MW, become slurry driving offshore wind farm unit.Every a set of booster apparatus of set offshore wind farm crew qiting, 5.5MW
The booster apparatus of type selects dry type to become 6.1MVA.
(2) submarine cable
The voltage for collecting electric line uses 35kV, and current collection topological project is blower by 8 circuit arrangements, and each circuit considers function
Rate distribution equilibrium connects Wind turbines on the Taiwan Straits 4-5, offshore wind farm unit connecting cable not juxtaposition.
1 diesel generating set is arranged in offshore boosting station, accesses 35kV II sections by 1 35/0.4kV step-up transformer
A section switch is arranged between I, II sections of buses for bus, is single-trunk segmental wiring.Section switch is beaten when normal operation
It opens, when marine wind electric field system side power loss, until 2 tunnel incoming breakers of main transformer low-pressure side are opened, 35kV bus section open circuit
Device closure, diesel generating set can power to each loop line transportation work style machine on 35kV bus, be transmitted electricity by 35kV sea cable to each Taiwan Straits
Upper Wind turbines.Meanwhile also shunt reactor need to be installed on 35kV bus to compensate the charge power of 35kV sea cable.
Electric equipments under isolated network state are as follows:
(1) diesel generating set
Rated capacity: 1200kW；Power factor is 0.8, i.e., nominal reactive capacity is 900kW.Has on the spot/distant place starting
Function.It was designed by continuous operation 100 hours at full capacity, 1200kW diesel generating set full load per hour factor is about
360L, therefore tank(storage)capacity is 360*100/1000=36m3。
(2) diesel generating set step-up transformer
Diesel generating set step-up transformer Capacity Selection 1600kVA, 35+2x2.5%/0.4kV, are connect using D, yn11
Line, short-circuit voltage Ud=6%.
(3) 35kV reactor
Due to the presence of 35kV sea cable capacity current, reactor need to be installed and carry out reactive compensation, reactor capacity presses institute's band
35kV sea cable capacitance current carries out overcompensation.The 35kV reactor capacity of configuration and the string number of 35kV sea cable are related.Tentative configuration
Reactor capacity take 2.0Mvar, and band -5%, -10%, -20% no-load tapping gear.
(4) ground connection becomes and station is used and become
According to 35kV sea cable capacity current size and station power load demand, determine that its parameter is as follows: capacity:
1800kVA (ground connection varying capacity), 630 (standing with varying capacity)；Using ZN, yn11 wiring, short-circuit voltage Ud=6%.
One, the workload demand of combat typhoon scene and O&M scenarios is analyzed:
1, the load Analysis under scene of combating typhoon
(1) offshore wind farm unit load
Wind turbine group has configured yaw driving cabinet (containing 13 yaw motors and rectification, inverter module), load on every Taiwan Straits
Capacity is 116.4kW.When combating typhoon scene, it is mainly thought of as the yaw driving cabinet power supply of offshore wind farm unit.
(2) offshore boosting station load
According to regulatory requirements, offshore boosting station emergency power supply need to be met the following requirements when meeting an urgent need operating condition:
A, required under electric-drive fire pump, emergency lighting, fire alarm system, fire broadcast system and other state of emergency
Communication equipment, catching fire alarm button and all internal signal equipment used in emergency situations etc. manually of discontinuously using,
The duration of power supply is no less than 18h.
B, navigation lights, the signal lamp, audible signal of International Maritime collision regulation requirement, and the signal of mark building gabarit
The duration of lamp or audible signal, power supply is no less than 4d.Statistics such as the following table 1, the emergency power supply of offshore boosting station are total about
220kW。
Table 1
2, the load Analysis under O&M scenarios
(1) offshore wind farm unit load is analyzed
In the case where grid cut-off, in order to provide necessary maintenance to offshore wind farm unit, it need to consider electrically anti-
Tide and gearbox lubrication power supply, in addition it is also necessary to lighting system, video monitoring, SCADA system, cabinet internal fan, aeronautical light,
Fire-fighting system, on-line vibration monitoring system etc. provide power supply.Workload demand such as the following table 2, the load capacity of separate unit blower are total about
For 14.07kW.
Table 2
(2) offshore boosting station load Analysis
It under O&M scenarios, the emergency power supply of offshore boosting station and is not different in Anti-Typhoon scene, is similarly 220kW.
Two, diesel-driven generator pool-size is calculated:
(1) the diesel-driven generator pool-size under scene of combating typhoon is calculated
A, whole blower accesses
During typhoon, two sections of buses of marine wind electric field connect the yaw load of whole offshore wind farm units, access by
Diesel-electric set electric supply.Wind turbines on 36 Taiwan Straits, the workload demand of offshore wind farm unit are about 4.19MW altogether, are much larger than
The capacity of diesel generating set, i.e. 1.2MW, are unable to satisfy demand.
B, half blower accesses
During typhoon, it is assumed that every section of 35kV bus of marine wind electric field connects the yaw load of whole blowers, in turn by bavin
Oily electric set electric supply.Two sections of 35kV buses consider the offshore wind farm unit access of about half capacity.The sea turn of every section of bus
Motor group quantity is 18 Fans, and the workload demand of offshore wind farm unit is about 2.10MW, and diesel generating set is still greater than
Capacity.Capacity for the starting requirement for meeting yaw motor, diesel generating set need to be larger, for the application example, diesel generation
The capacity of unit is unable to satisfy the starting requirement of yaw motor, according to the typhoon protection measure that blower producer provides, during typhoon,
Offshore wind farm unit resists typhoon by locking blade and reinforcement load nargin, is not dependent on external power supply.
(2) the diesel-driven generator pool-size under O&M scenarios is calculated
During O&M, two sections of buses of marine wind electric field connect the O&M load of whole blowers, and access is by diesel generation
Unit power supply.The workload demand of whole blowers is about 540kW；Meanwhile the station power load demand of offshore boosting station is 220kW.
The active capacity of diesel generating set can meet the workload demand of blower and offshore boosting station, but need to carry out the inspection of idle overvoltage
It tests.
Three, Load flow calculation
Load flow calculation is mainly used under O&M scenarios, verify diesel generating set and reactor capacity choose whether it is full
Within the allowable range whether sufficient isolated power grid requirement and each node voltage level.
(1) whole blower accesses and configuration 2Mvar reactor
It counts, all 8 string 35kV sea cables issue idle for 3.01Mvar；Diesel generating set need to absorb 0.46Mvar without
It is active to issue 0.76MW for function.Wherein, each blower node voltage section is [0.997 0.998].Diesel generating set can meet sea
The workload demand and voltage requirements of upper Wind turbines and offshore boosting station, and meet 35kV sea cable reactive requirement.
(2) whole blowers access, do not configure 2Mvar reactor
It counts, all 8 string 35kV sea cables issue idle for 3.06Mvar；Diesel generating set need to absorb 2.49Mvar without
Function (greater than the nominal reactive capacity of bavin hair), it is active to issue 0.79MW.Wherein, each blower node voltage is in 1.001 or so fluctuations.
Diesel generating set can meet the workload demand and voltage requirements of blower and offshore boosting station, but it is idle to be unable to satisfy 35kV sea cable
Demand.
(3) access of half blower and configuration 2Mvar reactor
It counts, 4 string 35kV sea cables issue idle for 1.23Mvar；It is idle that diesel generating set need to issue 1.13Mvar
(greater than the nominal reactive capacity of diesel generating set) it is active to issue 0.50MW.Wherein, each blower node voltage is on 0.993 left side
Right fluctuation.At this point, adjusting -20% no-load tapping gear of reactor, i.e., reactor capacity is 1.6Mvar.Diesel oil is sent out after adjusting
Motor group need to occur that 0.72Mvar is idle, issue the active of 0.50MW, each blower node voltage is in 0.995 or so fluctuation.It can expire
The workload demand and voltage requirements of sufficient offshore wind farm unit and offshore boosting station can also meet 35kV sea cable reactive requirement.
(4) half blower accesses, does not configure 2Mvar reactor
It counts, 4 string 35kV sea cables issue idle for 1.25Mvar；It is idle that diesel generating set need to absorb 0.90Mvar
(equal to the nominal reactive capacity of bavin hair), it is active to issue 0.49MW.Wherein, each blower node voltage fluctuates in 1.001 sections.Cause
This, is based on this operating condition, and diesel generating set can meet the workload demand and voltage requirements of blower and offshore boosting station, can satisfy
35kV sea cable reactive requirement.
It summarizes: under conditions of whole or half blower access isolated network and configuration 2Mvar reactor, diesel generating set,
The workload demand and voltage requirements that blower and offshore boosting station can all be met also meet 35kV sea cable reactive requirement.
Four, calculation of short-circuit current
By preceding analysis it is found that under O&M scenarios, isolated network is accessed around whole or half blower respectively, and configure 2Mvar
In the case of two kinds of reactor, marine wind electric field Analysis of Short-Circuit Current is carried out.As a result as shown in Table 3 and Table 4, table 3 is whole wind
Machine access and the Analysis of Short-Circuit Current table for configuring 2Mvar reactor, table 4 are that general blower accesses and configures 2Mvar reactor
Analysis of Short-Circuit Current table.
Table 3
Table 4
Can be obtained by table 3, table 4: under operation and maintenance scene, whole or half blower access isolated network, and configure 2Mvar reactor
Two kinds in the case of, marine wind electric field Analysis of Short-Circuit Current result has basically no difference.Therefore, under conditions permit, diesel oil
Generating set can provide O&M power supply to whole blowers and offshore boosting station simultaneously, and the method for operation is simple.Diesel generating set is high
Side, ground connection is pressed to become and stand all very small with low pressure side, the short circuit current of blower low-pressure side.And this CT no-load voltage ratio and protection at three
Device is chosen according to rated current, can not delicately reflect the marine wind electric field short trouble under operation and maintenance scene.Therefore,
Since short circuit current is smaller under isolated power grid mode, additional attention need to be given in protection seting.
Five, frequency analysis
If contain higher hamonic wave in system, after shunt reactor investment, can generate makes showing for the original Harmonics amplification of system
As.The capacity of short circuit S of diesel generating setBIt is: 166.42MVA；The capacity Q of shunt reactorLIt is 2Mvar (whole blowers respectively
Access), 1.6Mvar (access of half blower).When fundamental frequency is f1When, then resonance cycle frAre as follows:It asks
When obtaining whole blowers access isolated networks, half blower access isolated network, corresponding resonance times are respectively 9 subharmonic, 10 subharmonic.
In general, the harmonic wave that diesel generating set generates is negligible.Under O&M scenarios, offshore wind farm is only considered
The O&M power supply (i.e. heater and induction-motor load) of unit and offshore boosting station, caused by harmonic pollution it is smaller.In this situation
Under, a possibility that higher hamonic wave of system is minimum, no harmonic excitation source, resonance, is small.Under scene of combating typhoon, offshore wind farm need to be considered
The yaw load of unit.By taking 5.5MW blower of the present invention as an example, during yaw, need whole by the IGBT of blower interior
Flow module carries out yaw driving.It generates 9 times and the percentage of current of 10 subharmonic is respectively as follows: 0.1912 and 0.1901.Whole wind
Machine access isolated network or half blower access isolated network when, caused by harmonic pollution it is serious.In the case, that there are high orders is humorous for system
Wave has certain resonance possibility.Therefore, from the angle for avoiding harmonic resonance, diesel generating set is not recommended to mention for blower
For yawing load.
Six, diesel generating set starting protection scheme
(1) start scheme
The general Starting mode of diesel generating set is first to start generator, reaches rated speed to it, then close outlet
Side switch.But the capacity of the transformer of the offshore wind farm unit in 35kV current collection sea cable is 6.1MVA.The change of offshore wind farm unit
The excitation surge current generated when depressor idle-loaded switching-on is larger 6~10 times of rated current (can be), to diesel generating set cause compared with
Large impact.The protection for being likely to cause diesel generating set is shut down, and can not normally be started.Simultaneously as diesel generating set
Capacity can meet the O&M workload demand of blower and offshore boosting station.Therefore, when diesel generating set starts, all 35kV current collections
Sea cable route and the breaker that offshore boosting station ground connection becomes and station becomes close a floodgate.It is empty to avoid closing by " zero voltage start-up "
Carry the excitation surge current shock problem of transformer.
(2) protection seting scheme
It is according to the calculation of short-circuit current of table 3 and table 4 as a result, right in conjunction with the normal operation and O&M demand of offshore boosting station
Change and station are grounded with becoming in transformer, the offshore boosting station of marine wind electric field diesel generating set, and recommendation is made using stream is pressed through again
For main protection.Press the current element of overcurrent protection that can not consider the overload capacity of transformer again, it only need to be specified by transformer is escaped
Load current adjusting (can generally adjust the rated current for being 1.4 times).Meanwhile being configured with three sections of overcurrent protections, high pressure zero sequence
Overcurrent protection, low pressure zero-sequence over-current protection, external non electrical quantity are opened into protections such as protection, the simple bus protections of locking.
Wherein, composite voltage element is made of 2 parts: first is that negative sequence voltage element, for unbalanced fault；Second is that low
Voltage component, for three-phase symmetrical short trouble.Negative sequence voltage element is adjusted by unbalance voltage when escaping normal operation, and one
As adjusting be 0.04-0.08 times of system nominal voltage, high sensitivity will not influence the sensitivity of tranformer protection.Low electricity
The low-voltage that system occurs when pressure element need to escape motor start-up, setting valve should generally be not more than 0.7 times of system nominal electricity
Pressure.
Use above example surrounds under marine wind electric field isolated network state, and the diesel generating set spare to marine wind electric field is matched
Scheme is set to be studied with the method for operation.Studies have shown that configuring the diesel generation that rated capacity is 1200kW in the application example
When the reactor of machine and 2Mvar, under O&M scenarios, no matter the access of whole or half blower, can all meet sea turn motor
Workload demand and the voltage requirement of group and offshore boosting station, also meet 35kV sea cable reactive requirement.Meanwhile in order to avoid harmonic wave is humorous
Vibration, not recommending diesel generating set is to provide yaw load.Diesel generating set, can be empty to avoid closing by " zero voltage start-up "
Carry the excitation surge current impact of transformer.Become finally, for diesel generating set step-up transformer, offshore boosting station ground connection and station is used
Become, recommends to use to press through again and flow as main protection.In this way, consider comprehensively the electrical load under marine wind electric field isolated network state,
Idle overvoltage, short circuit current, harmonic wave and protection seting.
In one embodiment, as shown in figure 4, providing a kind of Allocation Analysis device of marine wind electric field isolated network state,
It include: load capacity acquisition module 410, access style determining module 430, reactive capability obtains module 450 and allocation plan is true
Cover half block 470, in which:
Load capacity obtains module 410 for obtaining blower load capacity and sea of the offshore wind farm unit under isolated network state
Booster stations load capacity of the upper booster stations under isolated network state.Access style determining module 430 be used for according to blower load capacity,
Booster stations load capacity and the rated capacity of accessory power supply to be configured determine preliminary blower access style.Reactive capability obtains module
450 for obtaining the fortune in the corresponding reactor configuration mode of reactor to be configured of preliminary blower access style and preset capacity
Under row scene, the demand reactive capability of accessory power supply to be configured.Allocation plan determining module 470 is for reactive capability according to demand
Preferred blower access style and the correspondence in preliminary blower access style are determined with the nominal reactive capacity of accessory power supply to be configured
Reactor configuration mode, obtain the accessory power supply allocation plan of marine wind electric field isolated network state.
The Allocation Analysis device of above-mentioned marine wind electric field isolated network state, by the load capacity and reactance under isolated network state
The configuration of device is analyzed, and binding analysis is come the access of blower when realizing the accessory power supply to be configured use for marine wind electric field
The configuration of type and reactor is set, acquired due to having comprehensively considered operating condition of the marine wind electric field under isolated network state
Accessory power supply allocation plan applicability it is high, so that the applicability configured according to accessory power supply allocation plan is high.
In one embodiment, blower load capacity include combat typhoon scene the first load capacity and O&M scenarios second
Load capacity, booster stations load capacity include combat typhoon the third load capacity of scene and the 4th load capacity of O&M scenarios.It connects
Enter determination type module 430 to be used for: calculate it is various with reference under blower access styles, the first load capacity and third load capacity
The sum of, obtain the total capacity of combating typhoon under the various access styles with reference to blower；It calculates under various reference blower access styles, second
The sum of load capacity and the 4th load capacity obtain the O&M total capacity under the various access styles with reference to blower；Selection be less than or
Equal to combat typhoon total capacity and/or the O&M total capacity of the rated capacity of accessory power supply to be configured, by selected total capacity of combating typhoon
And/or the corresponding reference blower access style of O&M total capacity is as preliminary blower access style.
It is combated typhoon the blower load capacity and booster stations load capacity of scene and O&M scenarios, is realized from ginseng by comprehensive analysis
It examines and selects preliminary blower access style in blower access style, will combat typhoon and either way taken into account with O&M, be can be improved
The applicability of identified preliminary blower access style, to improve the applicability of accessory power supply configuration.
In one embodiment, allocation plan determining module 470 is used for: selection is less than or equal to accessory power supply to be configured
The demand reactive capability of nominal reactive capacity；Using the corresponding preliminary blower access style of selected demand reactive capability as excellent
Blower access style is selected, using the corresponding reactor configuration mode of selected demand reactive capability as preferred blower access style
Corresponding reactor configuration mode obtains the accessory power supply allocation plan of marine wind electric field isolated network state.In this way, to preliminary blower
Access style and reactor configuration mode carry out preferably, obtained preferred blower access style and corresponding reactor configuration mode
It is able to satisfy the reactive capability of corresponding Run-time scenario, applicability is high.
In one embodiment, reactor configuration mode includes shunt reactor mode and does not access reactor system.On
The Allocation Analysis device for stating marine wind electric field isolated network state further includes being applicable in scene determining module, for matching in determining reactor
Set mode be shunt reactor mode when, obtain under preferred blower access style and the Run-time scenario of shunt reactor mode,
The access capacity of the capacity of short circuit of accessory power supply to be configured and reactor to be configured；According to capacity of short circuit and reactor to be configured
Access capacity determines the applicable scene of the corresponding accessory power supply to be configured of preferred blower access style.Applicable scene includes for mentioning
For yaw load combat typhoon scene and be not used in provide yaw load O&M scenarios.In this way, can further improve accessory power supply
The applicability of configuration.
In one embodiment, it is preferred that blower access style includes that whole blower accesses and half blower access, it is to be configured
It is waited for when the preset capacity of reactor to be configured and half blower access when the access capacity of reactor includes the access of whole blowers
Configure the capacity of reactor.Scene determining module is applicable in be determined preferably according to the access capacity of capacity of short circuit and reactor to be configured
The applicable scene of the corresponding accessory power supply to be configured of blower access style, comprising: be applicable in scene determining module according to capacity of short circuit
Resonance cycle when whole blower accesses is calculated with the preset capacity of reactor to be configured when the access of whole blowers；According to short circuit
The resonance cycle of capacity and half blower when accessing when the calculation of capacity half blower access of reactor to be configured；It obtains respectively
The corresponding percentage of current of resonance cycle when resonance cycle and half blower when whole blowers access access；If
When whole blowers access/access of half blower when percentage of current be greater than or equal to preset value, it is determined that the access of whole blowers
When/half blower access when, accessory power supply to be configured applicable scene be O&M scenarios；If when whole blower accesses/half wind
Machine access when percentage of current be less than preset value, it is determined that whole blowers access when/half blower access when, auxiliary to be configured
The applicable scene of power supply is scene of combating typhoon.In this way, applicability can be improved.
In one embodiment, the Allocation Analysis device of above-mentioned marine wind electric field isolated network state further includes protection seting mode
Determining module, under the Run-time scenario for obtaining preferred blower access style and corresponding reactor configuration mode, offshore wind farm
The short circuit current of each short dot in field；Determine the acquired corresponding protection seting mode of short circuit current.In this way, can further improve
The applicability of accessory power supply configuration.
In one embodiment, the Allocation Analysis device of above-mentioned marine wind electric field isolated network state further includes that Starting mode determines
Module, for according to the capacity of the matched transformer of offshore wind farm unit and the rated capacity of accessory power supply to be configured, determine to
Configure the boot sequence of the breaker of accessory power supply, the breaker of offshore wind farm unit and offshore boosting station.In this way, can be further
Improve the applicability of accessory power supply configuration.
The specific restriction of Allocation Analysis device about marine wind electric field isolated network state may refer to above for sea
The restriction of the configuration analysis method of wind power plant isolated network state, details are not described herein.The configuration of above-mentioned marine wind electric field isolated network state
Modules in analytical equipment can be realized fully or partially through software, hardware and combinations thereof.Above-mentioned each module can be hard
Part form is embedded in or independently of in the processor in computer equipment, can also be stored in computer equipment in a software form
Memory in, execute the corresponding operation of above modules in order to which processor calls.
In one embodiment, a kind of computer equipment is provided, which can be terminal, internal structure
Figure can be as shown in Figure 5.The computer equipment includes processor, the memory, network interface, display connected by system bus
Screen and input unit.Wherein, the processor of the computer equipment is for providing calculating and control ability.The computer equipment is deposited
Reservoir includes non-volatile memory medium, built-in storage.The non-volatile memory medium is stored with operating system and computer journey
Sequence.The built-in storage provides environment for the operation of operating system and computer program in non-volatile memory medium.The calculating
The network interface of machine equipment is used to communicate with external terminal by network connection.When the computer program is executed by processor with
Realize a kind of configuration analysis method of marine wind electric field isolated network state.The display screen of the computer equipment can be liquid crystal display
Or electric ink display screen, the input unit of the computer equipment can be the touch layer covered on display screen, be also possible to
Key, trace ball or the Trackpad being arranged on computer equipment shell can also be external keyboard, Trackpad or mouse etc..
It will be understood by those skilled in the art that structure shown in Fig. 5, only part relevant to application scheme is tied
The block diagram of structure does not constitute the restriction for the computer equipment being applied thereon to application scheme, specific computer equipment
It may include perhaps combining certain components or with different component layouts than more or fewer components as shown in the figure.
In one embodiment, a kind of computer equipment, including memory and processor are provided, is stored in memory
Computer program, the processor realize the configuration analysis method of aforementioned marine wind electric field isolated network state when executing computer program
Step.
Above-mentioned computer equipment.The step of configuration analysis method due to realizing aforementioned marine wind electric field isolated network state,
Similarly, the applicability of accessory power supply configuration can be improved.
In one embodiment, a kind of computer readable storage medium is provided, computer program is stored thereon with, is calculated
Machine program realizes the step of configuration analysis method of aforementioned marine wind electric field isolated network state when being executed by processor.
Above-mentioned computer readable storage medium, due to realizing the configuration analysis method of aforementioned marine wind electric field isolated network state
The step of, similarly, the applicability of accessory power supply configuration can be improved.
Those of ordinary skill in the art will appreciate that realizing all or part of the process in above-described embodiment method, being can be with
Relevant hardware is instructed to complete by computer program, the computer program can be stored in a non-volatile computer
In read/write memory medium, the computer program is when being executed, it may include such as the process of the embodiment of above-mentioned each method.Wherein,
To any reference of memory, storage, database or other media used in each embodiment provided herein,
Including non-volatile and/or volatile memory.Nonvolatile memory may include read-only memory (ROM), programming ROM
(PROM), electrically programmable ROM (EPROM), electrically erasable ROM (EEPROM) or flash memory.Volatile memory may include
Random access memory (RAM) or external cache.By way of illustration and not limitation, RAM is available in many forms,
Such as static state RAM (SRAM), dynamic ram (DRAM), synchronous dram (SDRAM), double data rate sdram (DDRSDRAM), enhancing
Type SDRAM (ESDRAM), synchronization link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM
(RDRAM), direct memory bus dynamic ram (DRDRAM) and memory bus dynamic ram (RDRAM) etc..
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The several embodiments of the application above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the concept of this application, various modifications and improvements can be made, these belong to the protection of the application
Range.Therefore, the scope of protection shall be subject to the appended claims for the application patent.
Claims (10)
1. a kind of configuration analysis method of marine wind electric field isolated network state, which is characterized in that the described method includes:
Offshore wind farm unit is obtained in the boosting of blower load capacity and offshore boosting station under isolated network state under isolated network state
It stands load capacity；
It is determined according to the rated capacity of the blower load capacity, the booster stations load capacity and accessory power supply to be configured preliminary
Blower access style；
It obtains in the preliminary blower access style and the corresponding reactor configuration mode of reactor to be configured of preset capacity
Under Run-time scenario, the demand reactive capability of the accessory power supply to be configured；
Determine that the preliminary blower connects according to the nominal reactive capacity of the demand reactive capability and the accessory power supply to be configured
Enter the preferred blower access style and corresponding reactor configuration mode in type, obtains the auxiliary of marine wind electric field isolated network state
Power configuration scheme.
2. the method according to claim 1, wherein the blower load capacity includes the first negative of scene of combating typhoon
Second load capacity of lotus capacity and O&M scenarios, the booster stations load capacity include combat typhoon scene third load capacity and
4th load capacity of O&M scenarios；It is described according to the blower load capacity, the booster stations load capacity and to be configured auxiliary
The rated capacity of power supply is helped to determine preliminary blower access style, comprising:
Calculate it is various with reference under blower access styles, the sum of first load capacity and the third load capacity, obtain
Total capacity of combating typhoon under the various access styles with reference to blower；
Calculate it is various with reference under blower access styles, the sum of second load capacity and the 4th load capacity, obtain
O&M total capacity under the various access styles with reference to blower；
Selection be less than or equal to the rated capacity of the accessory power supply to be configured it is described combat typhoon total capacity and/or the O&M it is total
Capacity, using the selected total capacity and/or O&M total capacity is corresponding connects with reference to blower access style as preliminary blower of combating typhoon
Enter type.
3. the method according to claim 1, wherein described according to the demand reactive capability and described to be configured
The nominal reactive capacity of accessory power supply determines preferred blower access style and corresponding electricity in the preliminary blower access style
Anti- device configuration mode obtains the accessory power supply allocation plan of marine wind electric field isolated network state, comprising:
Selection is less than or equal to the demand reactive capability of the nominal reactive capacity of the accessory power supply to be configured；
It, will be selected using the corresponding preliminary blower access style of selected demand reactive capability as preferred blower access style
The corresponding reactor configuration mode of demand reactive capability as the corresponding reactor configuration side of the preferred blower access style
Formula obtains the accessory power supply allocation plan of marine wind electric field isolated network state.
4. the method according to claim 1, wherein the reactor configuration mode includes shunt reactor mode
Do not access reactor system；The nominal reactive capacity according to the demand reactive capability and the accessory power supply to be configured
It determines the preferred blower access style and corresponding reactor configuration mode in the preliminary blower access style, obtains sea turn
After the accessory power supply allocation plan of electric field isolated network state, further includes:
If it is determined that reactor configuration mode be shunt reactor mode, then obtain in the preferred blower access style and parallel connection
Under the Run-time scenario of reactor system, the access of the capacity of short circuit of the accessory power supply to be configured and the reactor to be configured holds
Amount；
Determine that the preferred blower access style is corresponding according to the access capacity of the capacity of short circuit and the reactor to be configured
The accessory power supply to be configured applicable scene, the applicable scene includes for providing the scene and not of combating typhoon of yaw load
For providing the O&M scenarios of yaw load.
5. according to the method described in claim 4, it is characterized in that, the preferred blower access style includes whole blower accesses
It is accessed with half blower, the access capacity of the reactor to be configured reactor to be configured when including the access of whole blowers
The capacity of preset capacity and half the blower reactor to be configured when accessing；It is described according to the capacity of short circuit and described
The access capacity of reactor to be configured determines being applicable in for the corresponding accessory power supply to be configured of the preferred blower access style
Scene, comprising:
The preset capacity of the reactor to be configured calculates whole blowers and connects when according to the capacity of short circuit and whole blower accesses
Fashionable resonance cycle；
When being accessed according to the capacity of short circuit and half blower when the calculation of capacity half blower access of the reactor to be configured
Resonance cycle；
Resonance cycle when resonance cycle and half blower when obtaining whole blower accesses respectively access is corresponding
Percentage of current；
If when whole blowers access/access of half blower when percentage of current be greater than or equal to preset value, it is determined that whole wind
Machine access when/half blower access when, the accessory power supply to be configured applicable scene be O&M scenarios；
If when whole blowers access/access of half blower when percentage of current be less than the preset value, it is determined that whole blowers
When access/access of half blower when, the accessory power supply to be configured applicable scene be to combat typhoon scene.
6. the method according to claim 1, wherein described according to the demand reactive capability and described to be configured
The nominal reactive capacity of accessory power supply determines preferred blower access style and corresponding electricity in the preliminary blower access style
Anti- device configuration mode, after obtaining the accessory power supply allocation plan of marine wind electric field isolated network state, further includes:
It obtains under the Run-time scenario of the preferred blower access style and corresponding reactor configuration mode, the marine wind electric field
The short circuit current of each short dot；
Determine the acquired corresponding protection seting mode of short circuit current.
7. method described in any one of -6 according to claim 1, which is characterized in that the method also includes:
According to the rated capacity of the capacity of the matched transformer of the offshore wind farm unit and the accessory power supply to be configured, determine
The starting of the breaker of the accessory power supply to be configured, the breaker of the offshore wind farm unit and the offshore boosting station is suitable
Sequence.
8. a kind of Allocation Analysis device of marine wind electric field isolated network state, which is characterized in that described device includes:
Load capacity obtains module, for obtaining blower load capacity of the offshore wind farm unit under isolated network state and marine boosting
It stands the booster stations load capacity under isolated network state；
Access style determining module, for according to the blower load capacity, the booster stations load capacity and auxiliary to be configured
The rated capacity of power supply determines preliminary blower access style；
Reactive capability obtains module, for obtaining the reactor pair to be configured in the preliminary blower access style and preset capacity
Under the Run-time scenario for the reactor configuration mode answered, the demand reactive capability of the accessory power supply to be configured；
Allocation plan determining module, for being held according to the nominal reactive of the demand reactive capability and the accessory power supply to be configured
Amount determines the preferred blower access style and corresponding reactor configuration mode in the preliminary blower access style, obtains sea
The accessory power supply allocation plan of wind power plant isolated network state.
9. a kind of computer equipment, including memory and processor, the memory are stored with computer program, feature exists
In the step of processor realizes any one of claims 1 to 7 the method when executing the computer program.
10. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the computer program
The step of method described in any one of claims 1 to 7 is realized when being executed by processor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811586969.6A CN109462259B (en) | 2018-12-25 | 2018-12-25 | Method, device, equipment and medium for configuration analysis of isolated network state of offshore wind power plant |
Applications Claiming Priority (1)
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