CN105958535A - Distributed power supply cluster control system and control method thereof - Google Patents
Distributed power supply cluster control system and control method thereof Download PDFInfo
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- CN105958535A CN105958535A CN201610392352.5A CN201610392352A CN105958535A CN 105958535 A CN105958535 A CN 105958535A CN 201610392352 A CN201610392352 A CN 201610392352A CN 105958535 A CN105958535 A CN 105958535A
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000012544 monitoring process Methods 0.000 claims abstract description 35
- 239000004744 fabric Substances 0.000 claims description 11
- 239000006185 dispersion Substances 0.000 claims description 8
- 238000005516 engineering process Methods 0.000 description 4
- 238000011217 control strategy Methods 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 201000004569 Blindness Diseases 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
Classifications
-
- 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
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- H02J13/0079—
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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
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
-
- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/12—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
-
- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
Abstract
The invention discloses a distributed power supply cluster control system which comprises a distributed power supply cluster monitoring main station and a plurality of distributed power supply clusters. Each of the distributed power supply clusters comprises a distributed power supply cluster management device connected to the distributed power supply cluster monitoring main station and multiple distributed power supplies connected to the distributed power supply cluster management device. The invention also discloses a control method of the distributed power supply cluster control system. The method comprises the steps that the distributed power supply cluster monitoring main station monitors a grid operation state in real time, carries out area optimal flow calculation, obtains the active power control constant value, the reactive power control constant value, the power factor control constant value and the voltage control constant value of each distributed power supply cluster in an optimal flow condition, issues the control constant value of the distributed power supply cluster to the distributed power supply cluster management device, and the distributed power supply cluster management device carries out distributed power supply control. According to the system and the method, the influence on the safety stability of a power grid by a distributed power supply grid connection can be reduced.
Description
Technical field
The present invention relates to a kind of distributed power source cluster control system, further relate to a kind of distributed power source collection team control
The control method of system processed, belongs to Distributed Power Generation field.
Background technology
The application of the new cleaning fuel such as photovoltaic, blower fan is solve future source of energy crisis and environmental pollution important
Means.According to the national development object of planning, China in 2015 distributed power source installed capacity can reach 74GW,
Account for the 5.0% of the whole nation total installed capacity same period；The year two thousand twenty distributed power source installed capacity can reach 187GW, accounts for the same period
The 9.3% of whole nation total installed capacity.The grid-connected safe and reliable operation to electrical network of Thief zone distributed power source proposes challenge,
Therefore, the new forms of energy improving electrical network are dissolved ratio, and reduce the safety and stability on electrical network affecting is distributed power source
One of important research content of interconnection technology,
At present, the technical way solving distributed power source grid-connected includes micro-capacitance sensor, virtual plant, cluster
Control.Clustered control technology is initially applied to extensive marine wind electric field cluster cutting-in control, the most successfully
It is extended to the polymorphic type distributed electrical source domain such as distributed photovoltaic, gas turbine.The collection team control of distributed power source
System is to integrate distributed power source in region in form, but is different from the various of virtual plant internal electric source
Property, clustered control object is generally same kind or the unit of power producing characteristics approximation, more side on control strategy
In overweighting cluster, each unit, different control target harmonizing on room and time, overcome unit control
Isolatism and blindness.Meanwhile, distributed power source regional cluster controls to emphasize the coordination control to power supply body
System, relatively low to energy storage dependency, the more more economical property of system constructing.
Summary of the invention
It is an object of the invention to overcome deficiency of the prior art, it is provided that a kind of distributed power source clustered control
System, reducing the grid-connected safety and stability on electrical network of distributed power source affects.
For reaching above-mentioned purpose, the technical solution adopted in the present invention is: distributed power source cluster control system,
It is characterized in that, including: a distributed power source cluster monitoring main website and multiple distributed power source cluster, often
Individual distributed power source cluster includes: a distributed power source cluster accessing distributed power source cluster monitoring main website
Control device and the distributed power source of multiple access distributed power source cluster control device；Distributed power source cluster
Master station monitors operation of power networks state in real time, carries out region optimal load flow calculating, it is thus achieved that optimal load flow situation
Under the active power controller definite value of each distributed power source group, Reactive Power Control definite value, power factor controlling fixed
Value and Control of Voltage definite value, and the control definite value of distributed power source cluster is handed down to distributed power source cluster pipe
Control device, is carried out distributed power source control by distributed power source cluster control device.
Described distributed power source cluster according to distributed power source power producing characteristics, control mode, grid-connected position can
It is divided into: access same bus distributed power source cluster, dispersion accesses distributed power source cluster.
Present invention also offers the control method of a kind of distributed power source cluster control system, comprise the steps:
Step one: distributed power source group divides: consider the spatially distributed concentration degree of distributed power source in region,
Multimachine is exerted oneself similarity, multi-agent synergy degree of controllability, returns with type distributed power source in same for access transformer station
For same cluster；
Step 2: determine distributed power source group control pattern: according to the controlled situation of power supply in distributed power source group,
Determine that distributed power source group is: determine voltage mode control, determine power factor controlling pattern and determine meritorious, idle
One in power control mode Three models；
Step 3: area distribution formula power supply cluster optimal load flow calculates: distributed power source cluster monitoring main website general
In region, each distributed power source group is equivalent to a node, and the power supply in region, load are carried out optimum tide
Stream calculation, it is thus achieved that in network the optimum of each node is meritorious, reactive power definite value；
Step 4: clustered control instruction issues: for using under the distributed power source group determining voltage mode control
Send out reference voltage level, upper voltage limit value and voltage lower limit value；Power factor controlling pattern is determined for employing divide
Cloth power supply group's sending reference power factor, upper voltage limit value and voltage lower limit value；The most meritorious for employing,
The distributed power source group of Reactive Power Control pattern issues meritorious exert oneself desired value, idle desired value of exerting oneself；
Step 5: cluster distributed power supply controls: distributed power source group receives distributed power source cluster monitoring
The control instruction that main website issues and regulation definite value, use distribution in the tactful quick control group of this group control pattern
Formula power supply, makes group meet distributed power source cluster monitoring main website demand for control；
Step 6: clustered control result is returned to school, distributed power source cluster control device is by distributed power source control
Result is returned to school to distributed power source cluster monitoring main website.
Step 2 determines distributed power source group control pattern method particularly includes:
Access same bus distributed power source cluster and can use any control model；Dispersion accesses distributed power source
Cluster is only applicable to surely to gain merit, Reactive Power Control pattern.
The described concrete control method determining voltage mode control is as follows:
Distributed power source cluster control device receives cluster busbar voltage with reference to definite value Un and range of error △
Un, in real time monitoring cluster busbar voltage, if busbar voltage is less than (Un-△ Un), then reduce distributed power source
Power factor definite value, and it is handed down to the distributed power source in distributed power source cluster, promote distributed power source collection
Output reactive power in group；If busbar voltage is higher than (Un+ △ Un), then promote distributed electrical active power factor
Definite value, and it is handed down to the distributed power source in distributed power source cluster, reduce output in distributed power source cluster
Reactive power.
The described concrete control method determining power factor controlling pattern is as follows:
Distributed power source cluster control device receives cluster bus power factor reference definite value, connects in conjunction with bus
The load power entered, in computing cluster, the active power of distributed power source, reactive power go out force value, issue point
Cloth power definite value, it is ensured that bus power factor distributed power source cluster monitoring main website issue power because of
Within number scope.
Described fixed concrete control method meritorious, Reactive Power Control pattern is as follows:
Distributed power source cluster control device receives the distributed power source that distributed power source cluster monitoring main website issues
Cluster is exerted oneself active power, reactive power definite value, and distributed power source cluster control device is according to distributed power source
In cluster, the situation of exerting oneself of distributed power source, regulates the realtime power of each distributed power source in proportion, it is ensured that point
Cloth power supply cluster is exerted oneself in the limits that distributed power source cluster monitoring main website issues.
Compared with prior art, the present invention is reached to provide the benefit that: uses three layers of control structure, passes through
The optimal control of different time dimension, it is achieved that the grid-connected effective support to electrical network of distributed power source, it is possible to carry
Rise the grid-connected digestion capability of distributed power source in electrical network, reduce the grid-connected safety and stability shadow to electrical network of distributed power source
Ring, promote the distributed power source cluster monitoring main website ability of regulation and control to distributed power source；Use trunking mode control
Multiple distributed power source node equivalents are a bit, simplify network topology by system, the cluster prison effectively promoted
The new forms of energy of control main website access quantity.
Accompanying drawing explanation
Fig. 1 is the structural representation of the distributed power source cluster control system that the present invention provides.
Fig. 2 is the structural representation of access via telephone line same bus distributed power source cluster.
Fig. 3 is the structural representation that dispersion accesses distributed power source cluster.
Fig. 4 is the flow chart of the control method of the distributed power source cluster control system that the present invention provides.
Fig. 5 is distributed power source clustered control strategy block diagram
Detailed description of the invention
The invention will be further described below in conjunction with the accompanying drawings.Following example are only used for clearly illustrating
Technical scheme, and can not limit the scope of the invention with this.
As it is shown in figure 1, distributed power source cluster control system, including: a distributed power source cluster monitoring
Main website and multiple distributed power source cluster.Wherein, each distributed power source cluster includes: one is accessed distribution
The distributed power source cluster control device of formula power supply cluster monitoring main website and multiple access distributed power source cluster pipe
The distributed power source of control device.Distributed power source cluster control device disposes clustered control strategy, to realize collection
In group, the coordination of many distributed power sources controls, and manages distributed power source active power controller, Reactive Power Control,
Realize cluster and be uniformly controlled target.In cluster distributed power source should possess acceptance and respond active power definite value,
Reactive power definite value, the ability of power factor definite value.
Distributed power source cluster can be divided into according to the power producing characteristics of distributed power source, control mode, grid-connected position:
Access same bus distributed power source cluster, dispersion accesses distributed power source cluster.
As in figure 2 it is shown, be the structural representation of access via telephone line same bus distributed power source cluster, all of
Distributed power source is all connected with same bus, and in group, all distributed power sources exerts oneself all to distributed power source group
The voltage of points of common connection, frequency produce impact.
As it is shown on figure 3, be the structural representation of dispersion access distributed power source cluster, distributed electrical in region
Geographical position, source is close, it is similar to exert oneself, but distributed power source accesses different bus.
During work, distributed power source cluster monitoring main website monitors operation of power networks state in real time, minute level time
Between dimension carry out region optimal load flow calculating, it is thus achieved that the wattful power of each distributed power source group in the case of optimal load flow
Rate controls definite value, Reactive Power Control definite value, power factor controlling definite value and Control of Voltage definite value, and will divide
The control definite value of cloth power supply cluster is handed down to distributed power source cluster control device, by distributed power source cluster
Control device carries out distributed power source control.
The invention also discloses the control method of a kind of distributed power source cluster control system, this control method is
Realize based on above-mentioned distributed power source cluster control system, specifically include following steps:
Step one: distributed power source group divides: consider the spatially distributed concentration degree of distributed power source in region,
Multimachine is exerted oneself the factor such as similarity, multi-agent synergy degree of controllability, distributed with type in accessing same transformer station
Power supply is classified as same cluster；
Step 2: determine distributed power source group control pattern: according to the controlled situation of power supply in distributed power source group,
Determine that distributed power source group is: determine voltage mode control, determine power factor controlling pattern and determine meritorious, idle
One in power control mode Three models: can use for the same bus distributed power source cluster of access and appoint
Meaning control model；For dispersion access distributed power source cluster be only applicable to surely to gain merit, Reactive Power Control mould
Formula.
Step 3: area distribution formula power supply cluster optimal load flow calculates: distributed power source cluster monitoring main website general
In region, each distributed power source group is equivalent to a node, and the power supply in region, load are carried out optimum tide
Stream calculation, it is thus achieved that in network the optimum of each node is meritorious, reactive power definite value.
Step 4: clustered control instruction issues:
For use determine distributed power source group's sending reference magnitude of voltage of voltage mode control, upper voltage limit value and
Voltage lower limit value.The concrete control method determining voltage mode control is as follows:
Distributed power source cluster control device receives cluster busbar voltage with reference to definite value Un and range of error △
Un, in real time monitoring cluster busbar voltage, if busbar voltage is less than (Un-△ Un), then reduce distributed power source
Power factor definite value, and it is handed down to the distributed power source in distributed power source cluster, promote distributed power source collection
Output reactive power in group；If busbar voltage is higher than (Un+ △ Un), then promote distributed electrical active power factor
Definite value, and it is handed down to the distributed power source in distributed power source cluster, reduce output in distributed power source cluster
Reactive power.
Determine on distributed power source group's sending reference power factor of power factor controlling pattern, voltage for using
Limit value and voltage lower limit value.The concrete control method determining power factor controlling pattern is as follows:
Distributed power source cluster control device receives cluster bus power factor reference definite value, connects in conjunction with bus
The load power entered, in computing cluster, the active power of distributed power source, reactive power go out force value, issue point
Cloth power definite value, it is ensured that bus power factor distributed power source cluster monitoring main website issue power because of
Within number scope.
For use fixed meritorious, the distributed power source group of Reactive Power Control pattern issue meritorious desired value of exerting oneself,
Idle desired value of exerting oneself.Fixed concrete control method meritorious, Reactive Power Control pattern is as follows:
Distributed power source cluster control device receives the distributed power source that distributed power source cluster monitoring main website issues
Cluster is exerted oneself active power, reactive power definite value, and distributed power source cluster control device is according to distributed power source
In cluster, the situation of exerting oneself of distributed power source, regulates the realtime power of each distributed power source in proportion, it is ensured that point
Cloth power supply cluster is exerted oneself in the limits that distributed power source cluster monitoring main website issues.
Step 5: cluster distributed power supply controls: distributed power source group receives distributed power source cluster monitoring
The control instruction that main website issues and regulation definite value, use distribution in the tactful quick control group of this group control pattern
Formula power supply, makes group meet distributed power source cluster monitoring main website demand for control；Clustered control module input, defeated
Go out information as it is shown in figure 5, the input data of clustered control have:
Distributed electrical source information includes distributed power source invertor operation parameter, running status, distributed power source
And the voltage of site Bw, electric current, meritorious, idle, power factor, the voltage of the grid-connected PCC of cluster, have
Merit, idle, power factor；
Send instructions under main website and include power factor argument sequence, Control of Voltage argument sequence, fixed meritorious, idle
Definite value, definite value tolerance, interconversion rate parameter.
Output information includes controlling daily record, running log, above send data etc..
Step 6: clustered control result is returned to school, distributed power source cluster control device is by distributed power source control
Result is returned to school to distributed power source cluster monitoring main website.
The above is only the preferred embodiment of the present invention, it is noted that common for the art
For technical staff, on the premise of without departing from the technology of the present invention principle, it is also possible to make some improvement and change
Shape, these improve and deformation also should be regarded as protection scope of the present invention.
Claims (7)
1. distributed power source cluster control system, it is characterised in that including: a distributed power source cluster prison
Control main website and multiple distributed power source cluster, each distributed power source cluster includes: one is accessed distributed electrical
The distributed power source cluster control device of source cluster monitoring main website and multiple access distributed power source cluster management and control dress
The distributed power source put；
Distributed power source cluster monitoring main website monitors operation of power networks state in real time, carries out region optimal load flow calculating,
Obtain the active power controller definite value of each distributed power source group in the case of optimal load flow, Reactive Power Control definite value,
Power factor controlling definite value and Control of Voltage definite value, and the control definite value of distributed power source cluster is handed down to point
Cloth power supply cluster control device, is carried out distributed power source control by distributed power source cluster control device.
Distributed power source cluster control system the most according to claim 1, it is characterised in that described point
Cloth power supply cluster can be divided into according to the power producing characteristics of distributed power source, control mode, grid-connected position: accesses
Same bus distributed power source cluster, dispersion access distributed power source cluster.
3. the control method of distributed power source cluster control system, it is characterised in that: comprise the steps:
Step one: distributed power source group divides: consider the spatially distributed concentration degree of distributed power source in region,
Multimachine is exerted oneself similarity, multi-agent synergy degree of controllability, returns with type distributed power source in same for access transformer station
For same cluster；
Step 2: determine distributed power source group control pattern: according to the controlled situation of power supply in distributed power source group,
Determine that distributed power source group is: determine voltage mode control, determine power factor controlling pattern and determine meritorious, idle
One in power control mode Three models；
Step 3: area distribution formula power supply cluster optimal load flow calculates: distributed power source cluster monitoring main website general
In region, each distributed power source group is equivalent to a node, and the power supply in region, load are carried out optimum tide
Stream calculation, it is thus achieved that in network the optimum of each node is meritorious, reactive power definite value；
Step 4: clustered control instruction issues: for using under the distributed power source group determining voltage mode control
Send out reference voltage level, upper voltage limit value and voltage lower limit value；Power factor controlling pattern is determined for employing divide
Cloth power supply group's sending reference power factor, upper voltage limit value and voltage lower limit value；The most meritorious for employing,
The distributed power source group of Reactive Power Control pattern issues meritorious exert oneself desired value, idle desired value of exerting oneself；
Step 5: cluster distributed power supply controls: distributed power source group receives distributed power source cluster monitoring
The control instruction that main website issues and regulation definite value, use distribution in the tactful quick control group of this group control pattern
Formula power supply, makes group meet distributed power source cluster monitoring main website demand for control；
Step 6: clustered control result is returned to school, distributed power source cluster control device is by distributed power source control
Result is returned to school to distributed power source cluster monitoring main website.
The control method of distributed power source cluster control system the most according to claim 3, its feature exists
In: step 2 determines distributed power source group control pattern method particularly includes:
Access same bus distributed power source cluster and can use any control model；Dispersion accesses distributed power source
Cluster is only applicable to surely to gain merit, Reactive Power Control pattern.
The control method of distributed power source cluster control system the most according to claim 3, its feature exists
In: the described concrete control method determining voltage mode control is as follows:
Distributed power source cluster control device receives cluster busbar voltage with reference to definite value Un and range of error △
Un, in real time monitoring cluster busbar voltage, if busbar voltage is less than (Un-△ Un), then reduce distributed power source
Power factor definite value, and it is handed down to the distributed power source in distributed power source cluster, promote distributed power source collection
Output reactive power in group；If busbar voltage is higher than (Un+ △ Un), then promote distributed electrical active power factor
Definite value, and it is handed down to the distributed power source in distributed power source cluster, reduce output in distributed power source cluster
Reactive power.
The control method of distributed power source cluster control system the most according to claim 3, its feature exists
In: the described concrete control method determining power factor controlling pattern is as follows:
Distributed power source cluster control device receives cluster bus power factor reference definite value, connects in conjunction with bus
The load power entered, in computing cluster, the active power of distributed power source, reactive power go out force value, issue point
Cloth power definite value, it is ensured that bus power factor distributed power source cluster monitoring main website issue power because of
Within number scope.
The control method of distributed power source cluster control system the most according to claim 3, its feature exists
In: described fixed concrete control method meritorious, Reactive Power Control pattern is as follows:
Distributed power source cluster control device receives the distributed power source that distributed power source cluster monitoring main website issues
Cluster is exerted oneself active power, reactive power definite value, and distributed power source cluster control device is according to distributed power source
In cluster, the situation of exerting oneself of distributed power source, regulates the realtime power of each distributed power source in proportion, it is ensured that point
Cloth power supply cluster is exerted oneself in the limits that distributed power source cluster monitoring main website issues.
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| CN109818365A (en) * | 2017-11-20 | 2019-05-28 | 神华集团有限责任公司 | A kind of control system of distributed energy resource system |
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| CN105958535B (en) | 2018-07-10 |
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