CN205846731U - A kind of system improving virtual plant voltage stability based on wind accumulation - Google Patents
A kind of system improving virtual plant voltage stability based on wind accumulation Download PDFInfo
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- CN205846731U CN205846731U CN201620773114.4U CN201620773114U CN205846731U CN 205846731 U CN205846731 U CN 205846731U CN 201620773114 U CN201620773114 U CN 201620773114U CN 205846731 U CN205846731 U CN 205846731U
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- wind
- virtual plant
- accumulation
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- voltage stability
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
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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
- Y02E40/30—Reactive power compensation
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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
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
Abstract
This utility model discloses a kind of system improving virtual plant voltage stability based on wind accumulation, including: the multiple wind storage units being connected in regional power grid, described regional power grid is coordinated control centre by virtual plant and is coordinated control and scheduling according to the dispatching of power netwoks order of the bulk power grid accepted, wherein, each wind storage unit includes: Wind turbines, interface unit, energy-storage system and load, described Wind turbines, described energy-storage system and described load are followed by into points of common connection by described interface unit by a liter buckling, the plurality of wind storage unit forms wind accumulation, described wind accumulation conflux boosting after be delivered to different user loaded termination, and coordinated control centre by virtual plant and carry out unified coordination and control and scheduling.This utility model can increase the reactive voltage range of accommodation of Wind turbines cluster, thus improves the voltage stability of wind-powered electricity generation cluster.
Description
Technical field
This utility model relates to " the Internet+" wisdom energy technology field, improves based on wind accumulation particularly to one
Virtual plant voltage stabilization sexual system.
Background technology
In recent years, along with global energy, environmental problem are increasingly serious, wind energy, solar energy distributed regenerative resource because of
Its aboundresources, pollute the advantage such as little and receive much concern；But, due to wind energy and solar energy have capacity little, intermittent and with
The features such as machine, there are still position dispersion, be difficult to extensive energy storage, generating many bottles such as randomness is big and stability is low
Neck problem, also limit its online service ability to a certain extent.Carrying forward vigorously " the Internet+" wisdom energy is then to ensure
Chinese energy safety strategy, accelerate the inevitable requirement of Ecological Civilization Construction, be also promote that China energy consumption revolution changes must
So select.Build a kind of significant change means collecting production of energy, consumption and policy system in energy the Internet, and
Also human society life mode can be produced an essence revolution.
It is to realize energy interconnection that foundation can be uniformly coordinated the virtual plant (virtual power plant, VPP) of control
The important means of net, its essence is that the new energy power station being dispersed in everywhere, being connected with various level electrical network and energy storage etc. are set
Standby gathering carries out centralized Control scheduling and completes the market operation.At present, China due to generating in energy system, power transmission and distribution,
Electricity consumption tripartite's is relatively independent, and the domestic VPP complete solution technology not yet forming relevant maturation, VPP is substantially at early-stage Study
Stage.
Wherein, the virtual plant that energy storage proportioning large-scale wind power builds, often in power smooth, power generating quality raising, frequency
Affect aspect and carry out active power output support.But, control ability that Wind turbines is idle follows generator unit stator side wattful power
The difference of rate and different, and active power is the biggest, and unit adjustable reactive power scope is the least；That is do not possess dynamic reactive
Compensation ability, when system loading is bigger, Wind turbines gain merit force value increase, cause Wind turbines external adjustable idle
Scope diminishes, thus reduces the Wind turbines regulating power to wind energy turbine set access system control point voltage, and this will add further
The unstability of acute wind energy turbine set access system voltage.
Additionally, in centralized wind energy turbine set proportioning energy storage, owing to its energy storage allocation ratios of factor such as energy storage cost are not too large,
Energy storage peak load shifting, frequency modulation, minimizing spinning reserve effect very little.
Therefore, how the problems referred to above are solved, and work out a kind of raising virtual plant based on wind accumulation electricity
The system of pressure stability, is the research direction place of those skilled in the art.
Summary of the invention
Main purpose of the present utility model is to provide a kind of raising virtual plant based on wind accumulation voltage stability
System, coordinates control centre by virtual plant and the discharge and recharge of energy-storage system coordinates control realizes having wind-powered electricity generation cluster
The stable output of merit power and then the reactive voltage range of accommodation of increase Wind turbines cluster, thus improve the voltage of wind-powered electricity generation cluster
Stability.
In order to achieve the above object, this utility model provides a kind of raising virtual plant voltage stabilization based on wind accumulation
Property system, including the multiple wind storage units being connected in regional power grid, during described regional power grid is coordinated to control by virtual plant
The heart coordinates control and scheduling according to the dispatching of power netwoks order of the bulk power grid accepted, and wherein, each wind storage unit includes: wind
Group of motors, interface unit, energy-storage system and load, described Wind turbines, described energy-storage system and described load are connect by described
Mouth unit is followed by into points of common connection by a liter buckling, and the plurality of wind storage unit forms wind accumulation, and described wind accumulation is converged
It is delivered to different user loaded termination after stream boosting, and is coordinated control centre by virtual plant and carry out unified coordination and control and adjust
Degree.
Preferably in embodiment, also include intelligent measuring system, with the plurality of wind storage unit and described virtual plant
Coordinate control centre to be connected, for gathering parameter the monitor state of multiple wind storage unit.
Preferably in embodiment, also include wisdom EMS, with the plurality of wind storage unit and described virtual
Power plant coordinates control centre and is connected, and receives described virtual plant and coordinates the instruction of control centre and to the plurality of wind storage unit
Machine end trend, load and the energy-storage system of Wind turbines coordinate control.
Preferably in embodiment, described Wind turbines be double-fed asynchronous Wind turbines, permanent magnet direct-drive Wind turbines and
Double-fed-directly drive the one in mixing Wind turbines or combination in any.
Preferably in embodiment, described energy-storage system is all-vanadium flow battery, lead-acid battery, lead carbon battery, lithium ion
Battery, zinc-bromine flow battery, sodium-sulphur battery, hydrogen storage-fuel cell, ultracapacitor, superconductive energy storage system, compressed air are stored up
One in energy, flywheel energy storage or combination in any.
Preferably in embodiment, described regional power grid is 35kV electrical network.
Preferably in embodiment, described load is controllable load.
The utility model has the advantage of:
1) virtual plant based on wind accumulation constructed by this utility model configures energy storage phase with in centralized wind energy turbine set
The grid-connected point voltage stabilizing power more higher than having；
2) technical scheme provided by the utility model can also significantly cut down reactive-load compensation equipment while voltage stabilizing
Capacity, the conservative control coordinating control centre even with virtual plant only relies on the idle of Wind turbines and exerts oneself with dispatching and store up
Meritorious exchange auxiliary that energy system four-quadrant flexibly is idle can realize grid-connected point voltage stability without reactive-load compensation equipment and want
Ask；
3) each wind in virtual plant based on wind accumulation constructed by this utility model compared with centralized wind electricity storage field
There is complementary effect of exerting oneself between storage unit, improve permeability to a certain extent, make the peak load shifting of energy storage, frequency modulation adjust
The function pressing, reducing spinning reserve is more prominent, and then effectively compensate for intermittence and the undulatory property of wind-powered electricity generation so that wind power output
More stablize controlled.
Accompanying drawing explanation
Fig. 1 is the system construction drawing of a kind of raising of this utility model virtual plant based on wind accumulation voltage stability.
Fig. 2 is the conceptual design figure of raising wind of the present utility model storage virtual plant voltage stability.
Detailed description of the invention
Describe this utility model below with reference to the accompanying drawings and in conjunction with the embodiments in detail.It should be noted that do not conflicting
In the case of, the embodiment in the application and the feature in embodiment can be mutually combined.
As it is shown in figure 1, for of the present utility model a kind of improve virtual plant voltage stability based on wind accumulation be
System structure chart, a kind of system improving virtual plant voltage stability based on wind accumulation of the present utility model includes: connect
Multiple wind storage units in regional power grid, regional power grid is coordinated control centre according to the bulk power grid accepted by virtual plant
Dispatching of power netwoks order coordinates control and scheduling, and wherein, each wind storage unit includes: Wind turbines, interface unit, energy storage system
System and load, Wind turbines, energy-storage system and load are followed by into points of common connection (PCC) by interface unit by a liter buckling,
Multiple wind storage units form wind accumulation, and described wind accumulation is confluxed and is delivered to different user loaded termination, and by void after boosting
Intend coordination control centre of power plant and carry out unified coordination control and scheduling.
This utility model also includes intelligent measuring system and wisdom EMS, wherein: intelligent measuring system is with many
Individual wind storage unit and virtual plant are coordinated control centre and are connected, for gathering parameter the monitor state of multiple wind storage unit.Intelligence
Intelligent EMS, is connected with the described coordination control centre of the plurality of wind storage unit and virtual plant, receives described void
Intend power plant and coordinate the instruction of control centre machine end trend, load and the energy storage system of the Wind turbines to the plurality of wind storage unit
System coordinates control.Wherein: above-mentioned Wind turbines is double-fed asynchronous Wind turbines, permanent magnet direct-drive Wind turbines and double
Feedback-directly drive the one in mixing Wind turbines or combination in any；Described energy-storage system is all-vanadium flow battery, lead-acid battery, lead
Carbon battery, lithium ion battery, zinc-bromine flow battery, sodium-sulphur battery, hydrogen storage-fuel cell, ultracapacitor, superconducting energy storage system
One in system, compressed-air energy storage, flywheel energy storage or combination in any；Regional power grid is 35kV electrical network, loads as controllable load.
Annexation and the working method of concrete structure of the present utility model be: by double-fed asynchronous Wind turbines, Quan Fan
Redox flow battery energy storage system, load by interface unit conflux access 10kV transformer station, then through 10kV/35kV rise buckling be followed by into
The points of common connection of regional power grid, in regional power grid, the wind storage unit of total N number of this kind of pattern, is collectively forming wind accumulation,
Wind accumulation conflux boost to 35kV after be delivered to different user loaded termination thus form virtual plant, virtual plant boosts to
220kV is incorporated to bulk power grid.The instruction of system call is sent to virtual plant and coordinates control centre by bulk power grid, and virtual plant is coordinated
Control centre receives the operational factor of each wind accumulation unit of intelligent measuring system collection and carries out these parameter informations
Sending instruction to wisdom EMS after optimum organization and process, wisdom EMS is then to each cluster unit
Machine end trend, load and energy-storage system coordinate control.
Wherein improve the scheme of voltage stability as shown in Figure 2:
Monitor whether grid-connected point voltage exists fault fluctuation, direct locking virtual plant during the fluctuation of breaking down property in real time
Interior reactive controller；Non-faulting fluctuates and then can be divided into following two states:
1) when grid-connected point voltage rises, show that regional power grid is in low power consumption phase, now the wisdom energy of virtual plant
Send instructions under buret reason system, make all-vanadium flow battery energy-storage system be in charged state, on the one hand absorb wind-powered electricity generation cluster and produce
The active power of surplus, the reactive power of absorption region grid excess the most in time, to strengthen the safety of system voltage
Stability margin also avoids the extensive off-grid of double-fed fan motor unit to run；
2) when grid-connected point voltage declines, show that regional power grid is in peak times of power consumption, now the wisdom energy of virtual plant
Send instructions under buret reason system, make all-vanadium flow battery energy-storage system be in discharge condition, meritorious to reduce double-fed fan motor unit
Power output is born, and increases Wind turbines reactive voltage adjustable extent and continuously and stably provides certain idle to electrical network
To improve the stability of line voltage.
In sum, the utility model has the advantage of:
1) virtual plant based on wind accumulation constructed by this utility model configures energy storage phase with in centralized wind energy turbine set
The grid-connected point voltage stabilizing power more higher than having；
2) technical scheme provided by the utility model can also significantly cut down reactive-load compensation equipment while voltage stabilizing
Capacity, the conservative control coordinating control centre even with virtual plant only relies on the idle of Wind turbines and exerts oneself with dispatching and store up
Meritorious exchange auxiliary that energy system four-quadrant flexibly is idle can realize grid-connected point voltage stability without reactive-load compensation equipment and want
Ask；
3) compared with centralized wind electricity storage field, each wind in the virtual plant based on wind accumulation constructed by this utility model
There is complementary effect of exerting oneself between storage unit, improve permeability to a certain extent, make the peak load shifting of energy storage, frequency modulation adjust
The function pressing, reducing spinning reserve is more prominent, and then effectively compensate for intermittence and the undulatory property of wind-powered electricity generation so that wind power output
More stablize controlled.
The foregoing is only preferred embodiment of the present utility model, be not limited to this utility model, for this area
Technical staff for, this utility model can have various modifications and variations.It is all within spirit of the present utility model and principle,
Any modification, equivalent substitution and improvement etc. made, within should be included in protection domain of the present utility model.
Claims (7)
1. the system improving virtual plant voltage stability based on wind accumulation, it is characterised in that including: be connected to district
Multiple wind storage units in the electrical network of territory, described regional power grid is coordinated control centre according to the bulk power grid accepted by virtual plant
Dispatching of power netwoks order coordinates control and scheduling, and wherein, each wind storage unit includes: Wind turbines, interface unit, energy storage system
System and load, described Wind turbines, described energy-storage system and described load by described interface unit by a liter buckling be followed by into
Points of common connection, the plurality of wind storage unit formed wind accumulation, described wind accumulation conflux boosting after be delivered to different user
Loaded termination, and coordinated control centre by described virtual plant and carry out unified coordination and control and scheduling.
A kind of system improving virtual plant voltage stability based on wind accumulation the most according to claim 1, it is special
Levy and be, also include intelligent measuring system, coordinate control centre with the plurality of wind storage unit and described virtual plant and be connected, use
In the parameter the monitor state that gather multiple wind storage units.
A kind of system improving virtual plant voltage stability based on wind accumulation the most according to claim 1, it is special
Levy and be, also include wisdom EMS, coordinate control centre's phase with the plurality of wind storage unit and described virtual plant
Even, receive described virtual plant and coordinate the instruction of control centre the machine end tide of the Wind turbines to the plurality of wind storage unit
Stream, load and energy-storage system coordinate control.
A kind of system improving virtual plant voltage stability based on wind accumulation the most according to claim 1, it is special
Levying and be, described Wind turbines is double-fed asynchronous Wind turbines, permanent magnet direct-drive Wind turbines and double-fed-directly drive mixing wind turbine
One in group or combination in any.
A kind of system improving virtual plant voltage stability based on wind accumulation the most according to claim 1, it is special
Levy and be, described energy-storage system be all-vanadium flow battery, lead-acid battery, lead carbon battery, lithium ion battery, zinc-bromine flow battery,
One in sodium-sulphur battery, hydrogen storage-fuel cell, ultracapacitor, superconductive energy storage system, compressed-air energy storage, flywheel energy storage
Or combination in any.
A kind of system improving virtual plant voltage stability based on wind accumulation the most according to claim 1, it is special
Levying and be, described regional power grid is 35kV electrical network.
A kind of system improving virtual plant voltage stability based on wind accumulation the most according to claim 1, it is special
Levying and be, described load is controllable load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201620773114.4U CN205846731U (en) | 2016-07-20 | 2016-07-20 | A kind of system improving virtual plant voltage stability based on wind accumulation |
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| CN201620773114.4U CN205846731U (en) | 2016-07-20 | 2016-07-20 | A kind of system improving virtual plant voltage stability based on wind accumulation |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106972526A (en) * | 2017-03-20 | 2017-07-21 | 国网浙江省电力公司嘉兴供电公司 | The method that virtual plant carries out auto-control according to power supply capacity and network load |
| CN106972525A (en) * | 2017-03-20 | 2017-07-21 | 国网浙江省电力公司嘉兴供电公司 | Virtual plant is according to the power supply method for automatically regulating of power network power load |
| CN107017658A (en) * | 2017-03-20 | 2017-08-04 | 国网浙江省电力公司嘉兴供电公司 | The control method that virtual plant is self-regulated according to prediction power load |
| CN107016493A (en) * | 2017-03-20 | 2017-08-04 | 国网浙江省电力公司嘉兴供电公司 | The method that virtual plant is automatically adjusted |
| CN110601236A (en) * | 2019-09-20 | 2019-12-20 | 国网山东省电力公司电力科学研究院 | Capacity selection method and device of flywheel energy storage compensation device |
| CN110854897A (en) * | 2019-11-25 | 2020-02-28 | 深圳供电局有限公司 | System for improving voltage stability of virtual power plant based on wind storage cluster |
| CN110854902A (en) * | 2019-10-28 | 2020-02-28 | 深圳供电局有限公司 | Micro-grid-connected system applied to urban virtual power plant |
| CN111009908A (en) * | 2018-12-20 | 2020-04-14 | 国网上海市电力公司 | Scheme for realizing low-power phase modulation operation of gas turbine by utilizing electrical energy storage |
-
2016
- 2016-07-20 CN CN201620773114.4U patent/CN205846731U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106972526A (en) * | 2017-03-20 | 2017-07-21 | 国网浙江省电力公司嘉兴供电公司 | The method that virtual plant carries out auto-control according to power supply capacity and network load |
| CN106972525A (en) * | 2017-03-20 | 2017-07-21 | 国网浙江省电力公司嘉兴供电公司 | Virtual plant is according to the power supply method for automatically regulating of power network power load |
| CN107017658A (en) * | 2017-03-20 | 2017-08-04 | 国网浙江省电力公司嘉兴供电公司 | The control method that virtual plant is self-regulated according to prediction power load |
| CN107016493A (en) * | 2017-03-20 | 2017-08-04 | 国网浙江省电力公司嘉兴供电公司 | The method that virtual plant is automatically adjusted |
| CN111009908A (en) * | 2018-12-20 | 2020-04-14 | 国网上海市电力公司 | Scheme for realizing low-power phase modulation operation of gas turbine by utilizing electrical energy storage |
| CN110601236A (en) * | 2019-09-20 | 2019-12-20 | 国网山东省电力公司电力科学研究院 | Capacity selection method and device of flywheel energy storage compensation device |
| CN110601236B (en) * | 2019-09-20 | 2021-07-09 | 国网山东省电力公司电力科学研究院 | Capacity selection method and device of flywheel energy storage compensation device |
| CN110854902A (en) * | 2019-10-28 | 2020-02-28 | 深圳供电局有限公司 | Micro-grid-connected system applied to urban virtual power plant |
| CN110854897A (en) * | 2019-11-25 | 2020-02-28 | 深圳供电局有限公司 | System for improving voltage stability of virtual power plant based on wind storage cluster |
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