CN204376427U - A kind of power dispatching system - Google Patents
A kind of power dispatching system Download PDFInfo
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- CN204376427U CN204376427U CN201520064720.4U CN201520064720U CN204376427U CN 204376427 U CN204376427 U CN 204376427U CN 201520064720 U CN201520064720 U CN 201520064720U CN 204376427 U CN204376427 U CN 204376427U
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- power
- generator unit
- power dispatching
- generation unit
- scheduling
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- 238000004891 communication Methods 0.000 claims abstract description 35
- 238000012544 monitoring process Methods 0.000 claims abstract description 13
- 230000006855 networking Effects 0.000 claims abstract description 9
- 238000010248 power generation Methods 0.000 claims description 33
- 230000008901 benefit Effects 0.000 abstract description 2
- 230000006870 function Effects 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 239000013307 optical fiber Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
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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
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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
- 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
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- Supply And Distribution Of Alternating Current (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
This practicality provides a kind of power dispatching system, comprise multiple distributed generation unit and comprehensive monitoring system, each generator unit comprises current transformer and the control system of mutual communication connection, it is characterized in that, also comprises the scheduling adapter corresponding to each described generator unit; The described generator unit communication that each described scheduling adapter is corresponding with it connects, and forms power dispatching network by RS485 networking, and this power dispatching network is connected with described comprehensive monitoring system communication.The utility model adopts independent scheduling adapter and passes through RS485 bus group success rate dispatch network, meet that generator unit is meritorious, idle Real-Time Scheduling demand, and different communications protocol can be developed to different generator unit on scheduling adapter, disposing for power dispatching system provides comparatively convenience; In addition, owing to adopting the scheduling adapter of R485 to each generator unit to carry out networking, also there is the advantage that cost is low.
Description
Technical field
The utility model relates to a kind of power dispatching system, is specifically related to a kind of power dispatching system of electricity generation system presenting randomness, intermittent electric power characteristic for wind power generation, solar power generation etc.
Background technology
In recent years, wind power generation, the particularly electricity generation system such as wind energy, solar energy worldwide obtain fast development, and its single-machine capacity improves constantly, and generating field scale constantly expands.Wind power plant often belongs to typical distributed generation system, and be made up of generator unit that is more, dispersion, the power generation characteristics of its generator unit is large by on-the-spot climatic effect, presents larger randomness and intermittence.In order to be melted into utility network better, measurable and schedulable performance becomes that wind power plant is efficient, the guarantee condition of reliability service gradually.
Current, each wind power plant is equipped with data acquisition and supervisory control system SCADA (Supervisory Control And Data Acquisition) substantially, networking connection is carried out to each generator unit, to realize the centralized monitor to each generator unit of generating field.For wind generator system, as shown in Figure 1, current transformer, the control system of each wind turbine generator are connected with Ethernet switch the basic comprising of its SCADA system successively, and each wind turbine generator is connected with SCADA system by its Ethernet switch.This kind of SCADA system is mainly used in the centralized monitor of generating field and parts running status and parameter, and minority also declares to possess power concentration scheduling feature.There is following defect in this power dispatching mode depended in SCADA system:
First, due to the impact by communication link and original communication data, the real-time that the power dispatching function based on SCADA system shows in wind power generation unit side does not often reach the requirement of power scheduling department, particularly in Reactive Power Dispatch.
Secondly, because the compatibility of SCADA system is low, difficulty is brought to the communication connection of system.For single generating field, although generally only adopt a set of SCADA system, but due to concrete model even provider's possibility difference of each wind power generation unit, communication interface and the agreement of wind power generation unit there are differences, therefore need to develop different communication interfaces and agreement for different wind power generation units, this is for the provider of SCADA system, is often difficult to accomplish.For different generating field, because adopted SCADA data acquisition is often different with supervisory control system, cause larger difficulty to the deployment of generating field power dispatching function.
For above-mentioned defect, applicant proposes and a kind ofly carries out the power dispatching system of communication connection to solve the problem by scheduling adapter to the current transformer of each generator unit, control system, switch and supervisory control system and dispatching device in its patent ZL201320694231.8, but the technical scheme in this patent carries out networking based on switch, and cost is relatively high.
Utility model content
The technical problems to be solved in the utility model is, provides a kind of power dispatching system, overcomes the defect that available data collection and monitor system power scheduling cost is high.
The utility model solves the technical scheme that its technical problem adopts: provide a kind of power dispatching system, comprise multiple distributed generation unit and comprehensive monitoring system, and each generator unit comprises the current transformer and control system that mutual communication connects; It is characterized in that, described power dispatching system also comprises the scheduling adapter corresponding to each described generator unit, the control system communication of the described generator unit that each scheduling adapter is corresponding with it connects, and forming power dispatching network by RS485 networking, this power dispatching network is connected with described comprehensive monitoring system communication.
In power dispatching system of the present utility model, the current transformer communication of the described generator unit that described scheduling adapter is corresponding with it connects.
In power dispatching system of the present utility model, described comprehensive monitoring system comprises power concentration dispatching device, current transformer supervising device and control system supervising device.
In power dispatching system of the present utility model, described scheduling adapter comprises processor, the transceiver one be connected with this processor respectively, transceiver two, clock and memory, and this transceiver one, transceiver two are connected with described generator unit and the communication of described power concentration dispatching device respectively.
In power dispatching system of the present utility model, described distributed generation unit is wind power generation unit, and described wind power generation unit comprises wind-driven generator, control system, current transformer.
In power dispatching system of the present utility model, described distributed generation unit is photovoltaic generation unit, and described photovoltaic generation unit comprises photovoltaic battery array, control system, inverter.
Implement power dispatching system of the present utility model, compared with the prior art, its beneficial effect is:
1. adopt and independently dispatch adapter form power dispatching network, system processing power is strong, can meet that generator unit is gained merit, the demand of idle Real-Time Scheduling;
2. can develop different communications protocol to different generator units on scheduling adapter, then can provide unified communication interface to power concentration dispatching device, the deployment for power dispatching system provides larger facility.
3. power dispatching system is based on RS485 networking, and cost is lower.
Accompanying drawing explanation
Fig. 1 is the annexation schematic diagram of existing power dispatching system.
Fig. 2 is the annexation schematic diagram of the utility model power dispatching system embodiment one.
Fig. 3 is the annexation schematic diagram of the utility model power dispatching system embodiment two.
Fig. 4 is the structural representation dispatching adapter in this new power dispatching patcher.
Fig. 5 is the flow chart dispatching adapter embedded software in this new power dispatching patcher.
Embodiment
It is large by cause influences such as on-the-spot weather, the natural laws that power dispatching system of the present utility model is applicable to power generation characteristics, present larger randomness and intermittent distributed generation unit, as wind power generation unit, photovoltaic generation unit (photovoltaic generation unit comprises photovoltaic battery array, control system, current transformer (i.e. photovoltaic DC-to-AC converter)), tidal power generation unit etc.Be described for wind generator system below, other distributed generation unit situations are identical.
Embodiment one
As shown in Figure 2, power dispatching system of the present utility model comprises multiple distributed generation unit (i.e. wind turbine generator), scheduling adapter and comprehensive monitoring system, and scheduling adapter corresponds to each generator unit and arranges.
Each wind power generation unit comprises wind-driven generator, control system and current transformer (for variable speed model wind power generation unit, also comprise pitch-variable system), wherein, current transformer is connected with control system, and each generator unit is communicated to connect by scheduling adapter and comprehensive monitoring system.Comprehensive monitoring system comprises power concentration dispatching device, current transformer supervising device and control system supervising device (not shown).
Control system communication in the generator unit that each scheduling adapter is corresponding with it connects, and forms power dispatching network by RS485 networking, and this power dispatching network is connected with comprehensive monitoring system communication.
Scheduling adapter can be arranged on inside or the outside of wind power generation unit.
In order to realize the control to wind power generation unit active power each in wind field and/or reactive power, the power concentration dispatching device of comprehensive monitoring system is by its built-in power concentration dispatcher software (this dispatcher software can adopt prior art), assign active power and/or reactive power instruction to above-mentioned each scheduling adapter, the control command of active power and/or reactive power assigned again by each scheduling adapter to the control system in the wind power generation unit of correspondence.Scheduling adapter mainly assume responsibility for protocol conversion work, by from the active power of power dispatching network and/or reactive power instruction, be converted to the control system in corresponding wind power generation unit the control command of receptible active power and/or reactive power.
As shown in Figure 4, scheduling adapter comprises processor, the clock be connected with processor respectively, memory, transceiver one, the second-class hardware component of transceiver, wherein transceiver one is connected with wind power generation unit communication, and transceiver two is connected with power concentration dispatching device network.
Scheduling adapter can adopt the general electric link based on Ethernet or the digital communication mode of optical fiber link to the control system in wind power generation unit.
As shown in Figure 5, dispatch adapter and comprise data receiver, protocol conversion and the software function such as relevant treatment, data transmission.Wherein data receiver one, data send a function and wind power generation unit interface, data receiver two, data send two functions and power concentration dispatching device interface, and data receiver one, data send one and send two interfaces by protocol conversion and relevant treatment and data receiver two, data.
The utility model adopts independently dispatches adapter form power dispatching network, and system processing power is strong, can meet that wind energy turbine set is gained merit, the demand of idle Real-Time Scheduling; Can develop different communications protocol to different wind power generation units on scheduling adapter, then can provide unified communication interface to power concentration dispatching device, the deployment for power dispatching system provides larger facility simultaneously.In addition, because the control system communication in the generator unit that each scheduling adapter is corresponding with it connects rear by RS485 networking, also there is the advantage that cost is low.
This newly-increased, independently dispatch adapter, different communications protocol can be developed to different wind power generation units, then can provide unified communication interface to power concentration dispatching device, thus provide a great convenience for the deployment of newly-increased power dispatching system.Namely when disposing power dispatching system, existing wind power generation unit can remain unchanged substantially, mainly completes in scheduling adapter the adaptation work of various wind power generation unit; Meanwhile, be also the transformation due to adapter, power concentration dispatching device to lower with arranging a kind of unified communication interface.
Embodiment two
As shown in Figure 3, the present embodiment is substantially identical with embodiment one, and difference is only: the current transformer in the generator unit that scheduling adapter is corresponding with it and control system communication connect.
In order to realize the control to wind power generation unit reactive power each in wind field, power concentration dispatching device is by its built-in power concentration dispatcher software (this dispatcher software can adopt prior art), assign reactive power instruction to each scheduling adapter, the control command of reactive power assigned again by each scheduling adapter to the current transformer in the wind power generation unit of correspondence.Here scheduling adapter assume responsibility for protocol conversion work, on the one hand by the control command that the reactive power instruction transformation from power dispatching network is the receptible reactive power of the current transformer in corresponding wind power generation unit.On the other hand, because the idle output in wind power generation unit directly controls from current transformer, by the disposal ability that scheduling adapter is stronger, and scheduling adapter is connected with the direct of current transformer comparatively by force, scheduling adapter also can bear the idle controlling functions of similar AVC, so that the real-time of the reactive response of remarkable elevator system and control precision.Such as, the near-end voltage target of generator unit can be handed down to scheduling adapter as reactive power instruction by power concentration dispatching device, scheduling adapter is by running certain adjustment algorithm, the control command of the reactive power of this generator unit applicable can be calculated in real time, and be directly handed down to current transformer, obtain corresponding idle output.Here adjustment algorithm can be ratio-integral adjustment algorithm, namely for the near-end voltage-target of this generator unit and the difference of near-end voltage measured value, carry out ratio-integral adjustment, its result can be used as the control command of the reactive power of this generator unit after amplitude limit; Regulate algorithm also can be simple proportion adjustment algorithm, namely for the size of the near-end voltage-target of this generator unit and the difference of near-end voltage measured value, directly generate the control command of the reactive power of this generator unit according to a proportionality coefficient.
Scheduling adapter can adopt the general electric link based on Ethernet or the digital communication mode of optical fiber link to the current transformer in wind power generation unit, also can adopt the analog communication mode based on the electric current such as 4 ~ 20mA or 0 ~ 10V, voltage signal.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection range of the present utility model.
Claims (6)
1. a power dispatching system, comprises multiple distributed generation unit and comprehensive monitoring system, and each generator unit comprises current transformer and the control system of mutual communication connection; It is characterized in that, described power dispatching system also comprises the scheduling adapter corresponding to each described generator unit, the control system communication of the described generator unit that each scheduling adapter is corresponding with it connects, and forming power dispatching network by RS485 networking, this power dispatching network is connected with described comprehensive monitoring system communication.
2. power dispatching system as claimed in claim 1, is characterized in that, the current transformer communication of the described generator unit that described scheduling adapter is corresponding with it connects.
3. power dispatching system as claimed in claim 1, it is characterized in that, described comprehensive monitoring system comprises power concentration dispatching device, current transformer supervising device and control system supervising device.
4. the power dispatching system as described in one of claims 1 to 3, it is characterized in that, described scheduling adapter comprises processor, the transceiver one be connected with this processor respectively, transceiver two, clock and memory, and this transceiver one, transceiver two are connected with described generator unit and the communication of described power concentration dispatching device respectively.
5. the power dispatching system as described in one of claims 1 to 3, is characterized in that, described distributed generation unit is wind power generation unit, and described wind power generation unit comprises wind-driven generator, control system, current transformer.
6. the power dispatching system as described in one of claims 1 to 3, is characterized in that, described distributed generation unit is photovoltaic generation unit, and described photovoltaic generation unit comprises photovoltaic battery array, control system, inverter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520064720.4U CN204376427U (en) | 2015-01-29 | 2015-01-29 | A kind of power dispatching system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520064720.4U CN204376427U (en) | 2015-01-29 | 2015-01-29 | A kind of power dispatching system |
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| Publication Number | Publication Date |
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| CN204376427U true CN204376427U (en) | 2015-06-03 |
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| CN201520064720.4U Expired - Fee Related CN204376427U (en) | 2015-01-29 | 2015-01-29 | A kind of power dispatching system |
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| CN (1) | CN204376427U (en) |
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2015
- 2015-01-29 CN CN201520064720.4U patent/CN204376427U/en not_active Expired - Fee Related
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150603 |
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| CF01 | Termination of patent right due to non-payment of annual fee |