CN203617787U - Power scheduling system - Google Patents
Power scheduling system Download PDFInfo
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- CN203617787U CN203617787U CN201320694231.8U CN201320694231U CN203617787U CN 203617787 U CN203617787 U CN 203617787U CN 201320694231 U CN201320694231 U CN 201320694231U CN 203617787 U CN203617787 U CN 203617787U
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- 238000010248 power generation Methods 0.000 claims abstract description 60
- 238000004891 communication Methods 0.000 claims abstract description 40
- 230000006855 networking Effects 0.000 claims abstract description 5
- 238000012544 monitoring process Methods 0.000 abstract 3
- 230000006870 function Effects 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000009466 transformation Effects 0.000 description 4
- 239000013307 optical fiber Substances 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
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- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 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
- 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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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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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- 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
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/124—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wired telecommunication networks or data transmission busses
Abstract
The utility model relates to a power scheduling system, which comprises a plurality of distributed power generation units, a data collecting and monitoring system, a power centralized scheduling device and scheduling adapters corresponding to the power generation units, wherein a converter, a control system and an Ethernet switch of each of the power generation units are sequentially connected, the power generation unit is communicated and connected with the data collecting and monitoring system and the power centralized scheduling device through the Ethernet switch, the scheduling adapter is communicated and connected with the corresponding adapter, networking is carried out through the Ethernet switch A to form a power scheduling network, and the power scheduling network is communicated and connected with the data collecting and monitoring system and the power centralized scheduling device. The power scheduling system adopts independent scheduling adapters and forms the power scheduling network, is high in processing capacity, meets active and reactive real-time scheduling requirements of the power generation units, can develop different communication protocols for different power generation units on the scheduling adapters, provides a uniform communication interface for the power centralized scheduling device, and provides great convenience for deployment of the power scheduling system.
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 the electricity generation system that presents randomness, intermittent power generation characteristics 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 have worldwide obtained 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, is made up of generator unit more, that disperse, and the power generation characteristics of its generator unit is subject to on-the-spot climatic effect large, presents larger randomness and intermittence.In order to be melted into better utility network, measurable and schedulability can become that wind power plant is efficient, the guarantee condition of reliability service gradually.
Current, each wind power plant has been equipped with data acquisition and supervisory control system SCADA(Supervisory Control And Data Acquisition substantially), each generator unit is carried out to networking connection, to realize the centralized monitor to the each generator unit of generating field.Take wind generator system as example, as shown in Figure 1, the current transformer of each wind turbine generator, control system and Ethernet switch are connected the basic comprising of its SCADA system successively, and each wind turbine generator is connected with SCADA system by its Ethernet switch.This class 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 the power dispatching mode in this SCADA of depending on system:
First, owing to being subject to the impact of 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 aspect Reactive Power Dispatch.
Secondly, the compatibility of SCADA system is low, brings difficulty to the communication connection of system.For single generating field, although generally only adopt a set of SCADA system, but due to even provider's possibility difference of concrete model 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 often difficult to accomplish for the provider of SCADA system.For different generating fields, often different with supervisory control system due to adopted SCADA data acquisition, cause larger difficulty to the deployment of generating field power dispatching function.
Utility model content
The technical problems to be solved in the utility model is, a kind of power dispatching system is provided, and overcomes that available data collection and monitor system power scheduling real-time is difficult to meet the demands, communication interface and the poor defect of protocol compatibility.
The utility model solves the technical scheme that its technical problem adopts: a kind of power dispatching system is provided, comprise multiple distributed power generations unit, data acquisition and supervisory control system, power concentration dispatching device, current transformer, control system and the Ethernet switch of each generator unit are connected successively, each generator unit is by its Ethernet switch and this data acquisition and supervisory control system and the communication connection of this power concentration dispatching device, it is characterized in that, described power dispatching system 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 Ethernet switch A networking, and this power dispatching network is connected with described data acquisition and supervisory control system, the communication of described power concentration dispatching device.
In power dispatching system of the present utility model, the described too network switch that described Ethernet switch A is each generator unit, or described Ethernet switch A newly establishes Ethernet switch corresponding to each described scheduling adapter.
In power dispatching system of the present utility model, the control system in the described scheduling adapter described generator unit corresponding with it and Ethernet switch communication connect.
In power dispatching system of the present utility model, the current transformer in the described scheduling adapter described generator unit corresponding with it and Ethernet switch communication connect.
In power dispatching system of the present utility model, current transformer, control system and Ethernet switch communication in the described scheduling adapter described generator unit corresponding with it connect.
In power dispatching system of the present utility model, described scheduling adapter comprises processor, the transceiver one, transceiver two, clock and the memory that are connected with this processor respectively, 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 power generation unit is wind power generation unit, described wind power generation unit comprises wind-driven generator, control system, current transformer, or described distributed power generation unit is photovoltaic generation unit, described photovoltaic generation unit comprises photovoltaic battery array, control system, current transformer.
Implement power dispatching system of the present utility model, compared with the prior art, its beneficial effect is:
1. adopt and independently dispatch adapter and form power dispatching network, system processing power is strong, can meet that generator unit is meritorious, the demand of idle Real-Time Scheduling;
2. simultaneously, on scheduling adapter, can develop different communications protocol to different generator units, can provide unified communication interface to power concentration dispatching device, for the deployment of power dispatching system provides larger facility.
Accompanying drawing explanation
Fig. 1 is the connection diagram of the existing SCADA data acquisition of wind power plant and supervisory control 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 annexation schematic diagram of the utility model power dispatching system embodiment three.
Fig. 5 is the structural representation of dispatching adapter device in the utility model power dispatching system.
Fig. 6 is the flow chart of dispatching adapter device embedded software in the utility model power dispatching system.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Power dispatching system of the present utility model is applicable to power generation characteristics and is subject to the cause influences such as on-the-spot weather, the natural law large, present larger randomness and intermittent distributed power generation unit, as wind power generation unit, photovoltaic generation unit (photovoltaic generation unit comprises photovoltaic battery array, control system, current transformer (being photovoltaic DC-to-AC converter)), tidal power generation unit etc.Describe as an example of wind generator system example below, other distributed power generation cell cases are identical.
Embodiment mono-
As shown in Figure 2, power dispatching system of the present utility model comprises multiple distributed power generations unit, data acquisition and supervisory control system, power concentration dispatching device, scheduling adapter.Scheduling adapter is corresponding to each generator unit setting.
Each wind power generation unit comprises that wind-driven generator, control system, current transformer and Ethernet switch are (for variable speed model wind power generation unit, also comprise pitch-variable system), wherein, current transformer, control system and Ethernet switch are connected successively, and each generator unit is by its Ethernet switch and this data acquisition and supervisory control system and the communication connection of this power concentration dispatching device.
Each control system and Ethernet switch communication of dispatching in the generator unit that adapter is corresponding with it connects, and Ethernet switch by each generator unit (in other embodiments, can be by newly establishing Ethernet switch corresponding to each scheduling adapter) networking forms power dispatching network, and this power dispatching network is connected with data acquisition and supervisory control system, the communication of power concentration dispatching device.
Scheduling adapter can be arranged on inside or the outside of wind power generation unit.
In order to realize the control to each wind power generation unit active power and/or reactive power in wind field, power concentration dispatching device 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, respectively dispatch adapter and again the control system in corresponding wind power generation unit is assigned the control command of active power and/or reactive power.Scheduling adapter has mainly been born protocol conversion work, by the active power from power dispatching network and/or reactive power instruction, be converted to control system in corresponding wind power generation unit the control command of receptible active power and/or reactive power.
As shown in Figure 5, scheduling adapter comprises processor, the clock, memory, transceiver one, the second-class hardware component of transceiver that are connected with processor respectively, 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 6, scheduling adapter comprises the software function such as data receiver, protocol conversion and 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 and independently dispatches adapter and form power dispatching network, and system processing power is strong, can meet that wind energy turbine set is meritorious, the demand of idle Real-Time Scheduling; On scheduling adapter, can develop different communications protocol to different wind power generation units simultaneously, can provide unified communication interface to power concentration dispatching device, for the deployment of power dispatching system provides larger facility.
This newly-increased, independently dispatch adapter, can develop different communications protocol to different wind power generation units, can provide unified communication interface to power concentration dispatching device, thereby provide a great convenience for the deployment of newly-increased power dispatching system.In the time disposing power dispatching system, existing wind power generation unit can remain unchanged substantially, and the adaptation work of various wind power generation units is mainly completed in adapter; Meanwhile, be also the transformation due to adapter, power concentration dispatching device arranges a kind of unified communication interface to lower use.
Embodiment bis-
As shown in Figure 3, the present embodiment and embodiment mono-are basic identical, and difference is only: current transformer and the Ethernet switch communication of dispatching in the generator unit that adapter is corresponding with it connect.
In order to realize the control to each wind power generation unit reactive power 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, respectively dispatch adapter and again the current transformer in corresponding wind power generation unit is assigned the control command of reactive power.The scheduling adapter has here been born protocol conversion work, the control command by the reactive power instruction transformation from power dispatching network by the receptible reactive power of current transformer in corresponding wind power generation unit on the one hand.On the other hand, because the idle output in wind power generation unit is directly from current transformer control, by the stronger disposal ability of scheduling adapter, and scheduling adapter is connected with the direct of current transformer by force, scheduling adapter also can be born the idle control function of similar AVC, so that real-time and the control precision of the reactive response of remarkable elevator system.Such as, power concentration dispatching device can be handed down to scheduling adapter as reactive power instruction using the near-end voltage target of generator unit, scheduler is by the certain adjusting algorithm of operation, can calculate in real time the control command of the reactive power that is applicable to this generator unit, and be directly handed down to current transformer, obtain corresponding idle output.The adjusting algorithm here can be ratio-integral adjustment algorithm, for the difference of near-end voltage-target and the near-end voltage measured value of this generator unit, 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; Regulating algorithm can be also that simple ratio regulates algorithm, for the size of the near-end voltage-target of this generator unit and the difference of near-end voltage measured value, directly generates 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.
Embodiment tri-
As shown in Figure 4, the present embodiment and embodiment mono-are basic identical, and difference is only: current transformer, control system and the Ethernet switch communication of dispatching in the generator unit that adapter is corresponding with it connect.
In order to realize the control to each wind power generation unit active power and reactive power in wind field, power concentration dispatching device is by its built-in power concentration dispatcher software (this dispatcher software can adopt prior art), assign active power and reactive power instruction to each scheduling adapter, each scheduling adapter is assigned active power control command to the control system in corresponding wind power generation unit again, the current transformer in wind power generation unit is assigned to the control command of reactive power.The scheduling adapter has here been born protocol conversion work on the one hand, control command by the active power instruction transformation from power dispatching network by the receptible active power of the control system in corresponding wind power generation unit and reactive power, the control command by the reactive power instruction transformation from power dispatching network by the receptible reactive power of current transformer in corresponding wind power generation unit.On the other hand, because the idle output in wind power generation unit is directly from current transformer control, by the stronger disposal ability of scheduling adapter, and scheduling adapter is connected with the direct of current transformer by force, scheduling adapter also can be born the idle control function of similar AVC, so that real-time and the control precision of the reactive response of remarkable elevator system.Such as, power concentration dispatching device can be handed down to scheduling adapter as reactive power instruction using the near-end voltage target of generator unit, scheduler is by the certain adjusting algorithm of operation, can calculate in real time the control command of the reactive power that is applicable to this generator unit, and be directly handed down to current transformer, obtain corresponding idle output.Regulating algorithm can be ratio-integral adjustment algorithm, for the difference of near-end voltage-target and the near-end voltage measured value of this generator unit, 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; Regulating algorithm can be also that simple ratio regulates algorithm, for the size of the near-end voltage-target of this generator unit and the difference of near-end voltage measured value, directly generates the control command of the reactive power of this generator unit according to a proportionality coefficient.
Scheduling adapter is to the control system in wind power generation unit and current transformer, can adopt the general electric link based on Ethernet or the digital communication mode of optical fiber link, also can adopt the analog communication mode based on the electric current such as 4～20mA or 0～10V, voltage signal.
Claims (8)
1. a power dispatching system, comprise multiple distributed power generations unit, data acquisition and supervisory control system, power concentration dispatching device, current transformer, control system and the Ethernet switch of each generator unit are connected successively, each generator unit is by its Ethernet switch and this data acquisition and supervisory control system and the communication connection of this power concentration dispatching device, it is characterized in that, described power dispatching system 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 Ethernet switch A networking, and this power dispatching network is connected with described data acquisition and supervisory control system, the communication of described power concentration dispatching device.
2. power dispatching system as claimed in claim 1, is characterized in that, the described too network switch that described Ethernet switch A is each generator unit, or described Ethernet switch A newly establishes Ethernet switch corresponding to each described scheduling adapter.
3. power dispatching system as claimed in claim 2, is characterized in that, the control system in the described scheduling adapter described generator unit corresponding with it and Ethernet switch communication connect.
4. power dispatching system as claimed in claim 2, is characterized in that, the current transformer in the described scheduling adapter described generator unit corresponding with it and Ethernet switch communication connect.
5. power dispatching system as claimed in claim 2, is characterized in that, current transformer, control system and Ethernet switch communication in the described scheduling adapter described generator unit corresponding with it connect.
6. the power dispatching system as described in one of claim 1 to 5, it is characterized in that, described scheduling adapter comprises processor, the transceiver one, transceiver two, clock and the memory that are connected with this processor respectively, and this transceiver one, transceiver two are connected with described generator unit and the communication of described power concentration dispatching device respectively.
7. the power dispatching system as described in one of claim 1 to 5, it is characterized in that, described distributed power generation unit is wind power generation unit, described wind power generation unit comprises wind-driven generator, control system, current transformer, or described distributed power generation unit is photovoltaic generation unit, described photovoltaic generation unit comprises photovoltaic battery array, control system, current transformer.
8. power dispatching system as claimed in claim 6, it is characterized in that, described distributed power generation unit is wind power generation unit, described wind power generation unit comprises wind-driven generator, control system, current transformer, or described distributed power generation unit is photovoltaic generation unit, described photovoltaic generation unit comprises photovoltaic battery array, control system, current transformer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320694231.8U CN203617787U (en) | 2013-11-05 | 2013-11-05 | Power scheduling system |
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| CN201320694231.8U CN203617787U (en) | 2013-11-05 | 2013-11-05 | Power scheduling system |
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| CN203617787U true CN203617787U (en) | 2014-05-28 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108695887A (en) * | 2018-05-28 | 2018-10-23 | 天津大学 | A kind of wind power generating set flexible interconnection system |
| CN108808728A (en) * | 2018-05-28 | 2018-11-13 | 天津大学 | A kind of wind power generation set grid-connection control method |
-
2013
- 2013-11-05 CN CN201320694231.8U patent/CN203617787U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108695887A (en) * | 2018-05-28 | 2018-10-23 | 天津大学 | A kind of wind power generating set flexible interconnection system |
| CN108808728A (en) * | 2018-05-28 | 2018-11-13 | 天津大学 | A kind of wind power generation set grid-connection control method |
| CN108808728B (en) * | 2018-05-28 | 2021-04-20 | 天津大学 | Grid-connected control method for wind generating set |
| CN108695887B (en) * | 2018-05-28 | 2021-10-01 | 天津大学 | Flexible interconnection system of wind generating set |
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| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHENZHEN HOPEWIND ELECTRIC CO., LTD. Free format text: FORMER NAME: SHENZHEN HEWANG ELECTRIC CO., LTD. |
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| CP03 | Change of name, title or address |
Address after: 518055 Guangdong city of Shenzhen province Nanshan District Xili town village official Liuzhou Industrial Zone No. 5 Building second layer 1-3 Patentee after: SHENZHEN HOPEWIND ELECTRIC Co.,Ltd. Address before: 518055 Guangdong city of Shenzhen province Nanshan District Xili Town, Dragon Village Second Industrial District 5 Building 5 floor Patentee before: SHENZHEN HOPEWIND ELECTRIC Co.,Ltd. |
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