CN102723781A - Energy management system for urban power network - Google Patents
Energy management system for urban power network Download PDFInfo
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- CN102723781A CN102723781A CN2012101930013A CN201210193001A CN102723781A CN 102723781 A CN102723781 A CN 102723781A CN 2012101930013 A CN2012101930013 A CN 2012101930013A CN 201210193001 A CN201210193001 A CN 201210193001A CN 102723781 A CN102723781 A CN 102723781A
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- energy management
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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
- Y02E40/10—Flexible AC transmission systems [FACTS]
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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
- Y04S10/22—Flexible AC transmission systems [FACTS] or power factor or reactive power compensating or correcting units
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- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention discloses an energy management system for an urban power network. The energy management system comprises a main network energy management system, a main network power database, a plurality of sub-region energy management systems, a sub-region power network database, a power station, a substation and a load end. The main network power database is connected with the main network energy management system and the sub-region energy management systems, the sub-region power network database is respectively connected with the sub-region energy management systems, the power station, the substation and the load end, and the sub-region energy management systems control the power station and the substation integrally. The energy management system has the advantage that integral control of voltage and power generation amount of the power network is realized.
Description
Technical field
The present invention relates to a kind of energy management system that is used for urban distribution network.
Background technology
Along with the finiteness of city dweller, new challenge has all been proposed for electrical network operator, industrial enterprise and resident that electric power energy is provided for the constantly soaring and major network mains supply ability of electricity needs.Become the task of top priority with efficient continuable mode electrification as far as possible.Efficient continuable mode electrification is based upon on the effective energy management system.This energy management system; Not only to guarantee the safe power supply of urban distribution network; Also requiring provides high-quality electric power energy to power consumer; Both guaranteed that the voltage of power consumer in the electrification process was stable, realized the unified control of line voltage and energy output, reduced the reactive power that load side produces in the electricity usage process.
Summary of the invention
The objective of the invention is provides a kind of energy management system that is used for urban distribution network in order to overcome the deficiency of prior art.It can be to improving the control technology level of urban distribution network.Solved the problem of the unified control of line voltage and energy output.
A kind of technical scheme that realizes above-mentioned purpose is: a kind of energy management system that is used for urban distribution network; Comprise major network energy management system, major network electric power data storehouse, subregion energy management system, subregion electric network data storehouse, power station, transformer station and load side; Said major network electric power data storehouse connects said major network energy management system and some subregion energy management systems; Said subregion electric network data storehouse connects the said energy management system of subregion, said power station, said transformer station and said load side respectively, unified said power station of control of said subregion energy management system and said transformer station.
Further, said subregion electric network data storehouse has also connected distribution type electric energy source electricity generation system and low voltage electric network energy management system.
Further, be equipped with in the said transformer station: dynamic reactive compensation device, capacitor, reactor and STATCOM.
Further, on the said power station excitation unit and speed regulating device are housed.
Further, the built-in controller that blendes together of said subregion energy management system.
Adopted a kind of technical scheme that is used for the energy management system of urban distribution network of the present invention; Promptly comprise what major network energy management system and subregion energy management system were formed, and by the unified technical scheme of controlling said power station and said transformer station of said subregion energy management system.Its technique effect is: the problem that has solved the unified control of line voltage and energy output
Description of drawings
Fig. 1 is a kind of structural representation that is used for the energy management system of urban distribution network of the present invention.
Embodiment
See also Fig. 1,, pass through below in order to understand technical scheme of the present invention better
Embodiment particularly, and combine accompanying drawing at length to explain:
See also Fig. 1, three grades of electrical networks that urban distribution network generally is made up of major network, subregion electrical network and low voltage electric network.Accordingly; Set up a kind of energy management system that is used for urban distribution network of the present invention and also taked the structure of layer-stepping, correspondence has been set up the structure of three grades of layering energy management systems of major network energy management system 1, subregion energy management system 2 and low voltage electric network energy management system 3.Certainly, have only the structure of the two-stage energy management system of said major network energy management system 1 and said subregion energy management system 2 also to be fine.Design makes said energy management system have the distinguishing feature that overall controlled target layering realizes like this; Said major network energy management system 1 connects major network SCADA (the Supervisory Control And Data Acquisition of system; Data acquisition and supervisor control); Said subregion energy management system 2 connects the said major network energy management system 1 of subregion electrical network SCADA system and loads major network interpretation software and subregion electrical network process software respectively with said subregion energy management system 2; The purpose of design is like this: improve the rapidity and the validity of said energy management system regulation and control, and reduced the complexity of database and interpretation software.
A kind of energy management system that is used for urban distribution network of the present invention; Comprise major network energy management system 1, major network electric power data storehouse 10, subregion energy management system 2, subregion electric network data storehouse 20, power station 21, transformer station 22 and load side 23; Said major network electric power data storehouse 10 connects said major network energy management system 1 and some subregion energy management systems 2, realizes the data sharing between said major network energy management system 1 and the said subregion energy management system 2.
Said subregion electric network data 20 also connects the said energy management system of subregion 2, said power station 21, said transformer station 22 and said load side 23 respectively.In general, said subregion energy management system has also connected some low voltage electric network energy management systems 3 and distributed energy electricity generation system 24 for 2 times.Said distributed energy electricity generation system 24 mainly comprises electricity generation systems such as solar energy, wind energy, biogas.Said like this subregion energy management system 2, said power station 21, said transformer station 22, said load side 23 and said distributed energy electricity generation system 24 can realize data sharings through said subregion electric network data storehouse 20.Wherein, the load of said load side 23 will have strict requirement to the voltage of whole electrical network stable, and said load side 23 also requires the reactive power that minimizing produces in the electricity usage process simultaneously.Said power station 21, said transformer station 22 and said distributed energy electricity generation system 24 are all by said subregion energy management system 2 unified controls.Wherein, through the control of 2 pairs of said transformer stations 22 of said subregion energy management system, realize adjusting to the subregion line voltage.Through the control in 2 pairs of said power stations 21 of said subregion energy management system, realize adjusting to subregion grid generation amount.
In the present embodiment, be equipped with in the said transformer station 22: dynamic reactive compensation device (SVC), capacitor, reactor and STATCOM flexible AC transmission equipment such as (STACOM).
When said STATCOM input was connected to power supply or energy storage device, the output of said STATCOM can independently send or absorb controlled meritorious and reactive power; It can improve the electric power system function aspect following: dynamic electric voltage is controlled, power oscillation damping, transient stability, voltage flicker control etc.
The reactive power impact that said dynamic reactive compensation device can effectively solve various load and produced obviously improves voltage ripple of power network, and power factor obviously improves, and effectively reduces the line loss of electric power.
Can be through said subregion energy management system 2 through above-mentioned flexible AC transmission equipment is realized the automatism voltage control (AVC) to the subregion electrical network.
In the said power station 21 excitation unit and speed regulating device are set, said subregion energy management system 2 can be realized automatic energy output control (AGC) through the control to said excitation unit and said speed regulating device.
Certainly, said major network energy management system 1 also can be connected with said power station, said transformer station and said load side and said distributed energy electricity generation system with said low voltage electric network energy management system 3.Said power station, said transformer station and the said load side that connects on the said major network energy management system 1 all belongs to other external system 11 that is connected on the said major network energy management system with said distributed energy electricity generation system formation.
Wherein said major network energy management system 1, said subregion energy conservation are 2 and all built-in controller that blendes together of said low voltage electric network energy management system 3, are that the controllers of installing in 2 that blend together are that example describes with said subregion energy conservation only below.Said subregion energy conservation be install in 2 blend together controller realizing to said power station 21, said transformer station 22 and said load side 23, said distributed energy electricity generation system 24, and the equipment such as dynamic reactive compensation device, capacitor, reactor and STATCOM in the said transformer station 22 blend together control.
The said controller that blendes together is a kind of controller that designs based on blending together Theory of Automatic Control, and the said Theory of Automatic Control that blendes together is a kind of event driven Theory of Automatic Control, and its control command corresponds directly to incident and is purpose to eliminate this incident.Said subregion energy management system 2 installed said blend together controller after, can stand under the situation of disturbance it to be carried out emergency control at said subregion electrical network, prevent voltage collapse, suppress low-frequency oscillation.The simultaneously said controller 2 that blendes together can be through realizing the visual of continuous tide calculating/security domain on the browser of said client terminal 2; Realization is to said subregion operation of power networks state LINE REAL TIME MONITORING and control; Improve the safety and stability level of electrical network, thus the fail safe that effectively improves electrical network.And effectively reduce dispatching of power netwoks/operations staff's working strength, and improve the quality and the precision of electric adjustment, improve the regulating effect of electric power.
Said subregion energy management system 2 is built-in blend together controller after: through blending together automatic control; Can realize realizing in the said subregion electrical network said power station 21, said transformer station 22 and said load side 23, power station 21, transformer station 22 and load side 23, said distributed energy electricity generation system 24; And the equipment such as high pressure dynamic reactive compensation device, capacitor, reactor and STATCOM in the said transformer station 22 are carried out unified, regulation and control automatically; Thereby make up the said subregion electrical network multiple target automatically automated system of control of excellent closed loop that becomes; Solved unified control problem meritorious and reactive power flow; Realization is to the On-line Control of the OPF (optimization trend) of subregion electrical network, helps realizing comprehensive lifting of whole subregion power grid security, stable, running quality and economic performance.The meritorious idle Collaborative Control and the adjusting of full electric network have been realized covering.Guaranteed the operation of subregion electricity net safety stable and high-quality.
Like this; Said subregion energy management system 2 is through the said power station 21 that makes full use of said subregion electrical network, said energy electricity generation system 24; Flexible AC transmission equipment such as the said dynamic reactive compensation device in the said transformer station 22, STATCOM are in the coordination that guarantees on the qualified basis of subregion electrical network and major network voltage through said reactive-load compensation equipment.The partition zone optimizing control of 2 pairs of said subregion electrical networks of said subregion energy management system; Make said subregion electrical network that sufficient flexible AC transmission equipment arranged; Improve the voltage security stability margin of said low voltage electric network and said load side 23; Strengthen the ability that said subregion electrical network bears accident, realize the layering and zoning in-situ balancing of reactive voltage, guarantee said subregion line voltage level in the reasonable scope.Realized covering in the said subregion electrical network the intelligent coordinated operation control of power transmission network and power distribution network reactive voltage.
In addition on the one hand, use the said controller that blendes together on the said subregion energy management system 2, can improve the economy of subregion operation of power networks.Improve the quality of power supply level of subregion electrical network, effectively reduce the net of electric power in said subregion electrical network and decrease, improve the rate of qualified voltage of electrical network, reduce the investment of extra reactive-load compensation equipment.Improve the control technology level of subregion electrical network.Solved unified control problem meritorious and reactive power flow.Consider the influence of voltage and frequency two aspect factors simultaneously, realized that AGC and AVC co-operating and on-line coordination are meritorious, idle multiple-objection optimization.
In said major network energy management system 1, said subregion energy management system 2 and the said low voltage electric network energy management system 3 RTDS (Real Time Digital Simulator, real-timedigital simulation appearance) is housed also.On said subregion energy management system 2; Said RTDS controls real-time simulation platform automatically as the voltage power-less on the said subregion energy management system 2, and AVC manages and technical support and test platform have been established in the AGC management for said subregion energy management system is implemented 2 said subregion electrical networks.This helps making full use of the various idle resource in the electric power system; More rationally carry out reactive power compensation; On guaranteeing the qualified basis of voltage through idle coordination up and down, partition zone optimizing, transfer the control of reactive voltage in the scope, thereby there is sufficient dynamic reactive deposit in the system that guarantees, strengthens the ability that electrical network bears accident; Alleviate factory's station operations staff's labour intensity simultaneously, improve control of quality, accuracy, speed and effect.Helping in the subregion electrical network between the Power Plant idle exerting oneself simultaneously distributes rationally; Make full use of send out, the idle resource of supply side, realizes idle coordination up and down, partition zone optimizing, reactive power flow exchange minimizing between the electrical network layering and zoning; Reduce grid net loss as far as possible, to obtain economic benefit.
A kind of energy management system that is used for urban distribution network of the present invention is that what to be directed against is the laminarity of the management that had in essence of electric power system and regulation and control, " incident " takes place and control command is sent discreteness and contradiction and the problem that cause of bottom components such as said power station, load and flexible transmission equipment between the continuity of running status variation; To blend together system's device applies in the energy management system; Energy management system of the present invention has can handle the ability that extensive, complicated, non-linear, multiple-objection optimization, multidimensional discrete and that continuous state combines blend together system, and its successful implementation will make Electrical Power System Dynamic quality, safety and stability and energy-saving and cost-reducing triple objective optimizations or the accurate conception of optimizing become possibility.Said subregion energy management system 2 is through the said controller that blendes together; And said power station 21, said transformer station 22 are connected with said distributed energy electricity generation system 24; AVC and AGC are integrated on the uniform platform; In actual mechanical process, can consider the influence of factor aspect voltage and the frequency two simultaneously, the contradictory phenomena of having avoided the adjustment of voltage and frequency might occur when adjusting respectively.
Those of ordinary skill in the art will be appreciated that; Above embodiment is used for explaining the present invention; And be not to be used as qualification of the present invention; As long as in connotation scope of the present invention, all will drop in claims scope of the present invention variation, the modification of the above embodiment.
Claims (5)
1. energy management system that is used for urban distribution network; It is characterized in that: said energy management system; Comprise major network energy management system (1), major network electric power data storehouse (10), subregion energy management system (2), subregion electric network data storehouse (20), power station (21), transformer station (22) and load side (23); Said major network electric power data storehouse (10) connects said major network energy management system (1) and some subregion energy management systems (2); Said subregion electric network data storehouse (20) connects said subregion energy management system (2), said power station (21), said transformer station (22) and said load side (23) respectively, said subregion energy management system (2) unified control said power station (21) and said transformer station (22).
2. a kind of energy management system that is used for urban distribution network according to claim 1 is characterized in that: said subregion electric network data storehouse (20) has also connected distribution type electric energy source electricity generation system (24) and low voltage electric network energy management system (3).
3. a kind of energy management system that is used for urban distribution network according to claim 1 and 2 is characterized in that: said transformer station is equipped with in (23): dynamic reactive compensation device, capacitor, reactor and STATCOM.
4. a kind of energy management system that is used for urban distribution network according to claim 1 and 2 is characterized in that: excitation unit and speed regulating device are equipped with on (21) in said power station.
5. a kind of energy management system that is used for urban distribution network according to claim 1 and 2 is characterized in that: the built-in controller that blendes together of said subregion energy management system (2).
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| CN2012101930013A CN102723781A (en) | 2012-06-12 | 2012-06-12 | Energy management system for urban power network |
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| CN2012101930013A CN102723781A (en) | 2012-06-12 | 2012-06-12 | Energy management system for urban power network |
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Cited By (3)
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| WO2014094271A1 (en) * | 2012-12-20 | 2014-06-26 | Abb Technology Ltd. | Coordinated control method of generator and svc for improving power plant active power throughput and controller thereof |
| CN104734145A (en) * | 2013-12-24 | 2015-06-24 | 长沙理工大学 | Micro-grid connection control method based on hybrid hierarchical structural model |
| CN109494718A (en) * | 2018-11-16 | 2019-03-19 | 陕西理工大学 | Damping-considered emergency control method for complex power system |
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| CN109494718B (en) * | 2018-11-16 | 2022-05-13 | 陕西理工大学 | Damping-considered emergency control method for complex power system |
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Owner name: STATE ELECTRIC NET CROP. Effective date: 20120907 |
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Effective date of registration: 20120907 Address after: 200122 Shanghai City, Pudong New Area source deep road, No. 1122 Applicant after: Shanghai Electric Power Corporation Applicant after: State Grid Corporation of China Address before: 200122 Shanghai City, Pudong New Area source deep road, No. 1122 Applicant before: Shanghai Electric Power Corporation |
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