CN210041352U - Novel multi-station-in-one topological structure of wind power energy storage power station - Google Patents
Novel multi-station-in-one topological structure of wind power energy storage power station Download PDFInfo
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- CN210041352U CN210041352U CN201920940491.6U CN201920940491U CN210041352U CN 210041352 U CN210041352 U CN 210041352U CN 201920940491 U CN201920940491 U CN 201920940491U CN 210041352 U CN210041352 U CN 210041352U
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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
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Abstract
The utility model provides a novel multi-station-in-one topological structure of a wind power energy storage power station, which comprises a transformer substation, a wind power station, an energy storage station and a data center station; the induction filtering transformer of the transformer substation comprises a high-voltage winding and two low-voltage windings. The high-voltage winding of the transformer is connected with a bus of a power system, one low-voltage winding is connected with a bus where the fan is located, and the other low-voltage winding is connected with a bus where the FC filter and the energy storage station are located. The energy storage station can realize the charge and discharge functions, and also can realize reactive dynamic regulation by utilizing the converter units to replace SVG. Unified scheduling and management of active, reactive and central data are realized through multi-station integration; the utility model can significantly improve the utilization rate of wind energy and reduce the waste wind; wind power adjustability is improved, and peak clipping and valley filling are performed; the electric energy input and output of the energy storage system are adjusted in a mode of combining the driving mode and the driven mode, so that the economic operation of the system is realized, and the economic benefit is generated.
Description
Technical Field
The utility model belongs to the technical field of wind power generation and energy storage, concretely relates to novel wind-powered electricity generation energy storage power station's unification topological structure of multistation.
Background
At present, the topology of domestic distributed wind power generation is mainly that an SVG device and an FC filter are configured on the low-voltage side of a step-up transformer, and dynamic reactive power compensation and harmonic suppression are carried out on a power system by coordinately controlling the SVG device and the FC filter. Although the electric energy quality improvement effect of a certain degree can be played, the SVG device and the FC filter can only provide a reactive support effect, the active power of a power system cannot be adjusted, and the smooth wind power output cannot be realized, so that the phenomenon of 'wind abandon' is serious.
SUMMERY OF THE UTILITY MODEL
To the defect in the topology of current wind power plant, the utility model provides a novel many stations unification topological structure of wind-powered electricity generation energy storage power station on conventional wind power plant structure basis, installs the energy storage station additional, realizes unified dispatch and management to active, idle and central data.
A multi-station-in-one topological structure of a novel wind power energy storage power station comprises a transformer substation, a wind power station, an energy storage station and a data center station;
a high-voltage side winding of an induction filter transformer in the transformer substation is connected with a 110kV bus of a power system of the transformer substation, and an FC filter, an energy storage station and a wind power station of the transformer substation are connected to a low-voltage side winding of the induction filter transformer through a 35kV bus of the power system of the transformer substation; the wind power station and the energy storage station are controlled by a data center station.
The energy storage station and the data center station are additionally arranged, the energy storage station is connected with the induction filter transformer, the charging and discharging functions are realized, and meanwhile, active and reactive dynamic adjustment is realized by using a converter unit in the energy storage station.
Furthermore, the wind power station is connected to one low-voltage side winding of an induction filter transformer of the transformer substation through a first power system 35kV bus of the transformer substation, the FC filter and the energy storage station of the transformer substation are connected in parallel to a second power system 35kV bus of the transformer substation, and the FC filter and the energy storage station are connected to the other low-voltage side winding of the induction filter transformer through the second power system 35kV bus of the transformer substation.
Further, the wind power station and the energy storage station are connected in parallel on a 35kV bus of the first power system, and are connected to one low-voltage side winding of the induction filter transformer through the 35kV bus of the first power system of the transformer substation, and the FC filter is connected to the other low-voltage side winding of the induction filter transformer through the 35kV bus of the second power system of the transformer substation.
Further, the energy storage station comprises a plurality of energy storage current transformation units connected in parallel.
Further, the energy storage converter unit comprises a battery compartment and a converter compartment which are sequentially connected, the battery compartment comprises a plurality of batteries which are connected in parallel, the converter compartment comprises two direct/alternating current bidirectional converters and a transformer, and the two direct/alternating current bidirectional converters are connected in parallel and then connected with the transformer.
The direct current provided by the battery cabin is converted into three-phase alternating current by the direct/alternating current bidirectional converter, the three-phase alternating current is boosted to a 35kV bus of the power system by the transformer, and then the three-phase alternating current is connected to the low-voltage side of the induction filter transformer and is connected with the 35kV bus 2, so that the battery is connected with a power grid and a fan.
Advantageous effects
The utility model provides a novel multi-station-in-one topological structure of a wind power energy storage power station, which comprises a wind power station, a transformer substation, an energy storage station and a data center station, and realizes unified scheduling and management of active, reactive and center data through four-station-in-one; according to wind power station and energy storage station functional requirement, adopt induction filter transformer at wind power station, install FC wave filter and energy storage system simultaneously, carry out remote scheduling to wind power station and energy storage station's active power and reactive power on conventional wind power station structure basis, install the energy storage station additional, can cancel the SVG device in current wind power station, solve wind power station active dynamic control difficult problem simultaneously, promote wind turbine generator system generated energy and utilization ratio, reduce and abandon the wind. The electric energy output and input of the energy storage system are adjusted in a mode of combining the driving mode and the driven mode, and smooth output or peak clipping and valley filling are achieved.
Drawings
Fig. 1 is a schematic structural diagram 1 of the present invention;
fig. 2 is a schematic structural diagram 2 of the present invention;
FIG. 3 is a schematic structural diagram of an energy storage converter unit;
fig. 4 is a schematic diagram of wind power fluctuation stabilizing control.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
Referring to fig. 1, the multi-station-in-one topology structure of the novel wind power energy storage power station provided by the embodiment includes a 110kV bus, a 35kV bus, an induction filter transformer, an FC filter of a power system of a transformer substation, a wind power station, an energy storage station, and a data center station; the induction filter transformer comprises a high-voltage winding 1, a low-voltage winding 2 and a low-voltage winding 3, and the wind power station is composed of a plurality of wind power generators and an energy storage station is composed of a plurality of energy storage current transformation units. The wind power station and the energy storage station are controlled by a data center station.
The high-voltage winding 1 of the induction filter transformer is connected with a 110kV bus of an electric power system, the low-voltage winding 2 is connected with the 35kV bus 1, the 35kV bus 1 is connected with a wind generating set, a plurality of wind generating sets in the wind generating set are connected in parallel, the low-voltage winding 3 is connected with the 35kV bus 2, the 35kV bus 2 is connected with an FC filter and an energy storage station, the FC filter and the energy storage station are connected in parallel, and the energy storage station is formed by connecting a plurality of energy storage converting units in parallel.
Referring to fig. 2, the another novel multi-station-in-one topology structure of a wind power energy storage power station provided by this embodiment includes a 110kV bus, a 35kV bus, an induction filter transformer and an FC filter of a power system of a transformer substation, where the induction filter transformer includes a high-voltage winding 1, a low-voltage winding 2 and a low-voltage winding 3, the wind power station is composed of a plurality of wind power generators, and the energy storage station is composed of a plurality of energy storage converter units.
The high-voltage winding 1 of the induction filter transformer is connected with a 110kV bus of the power system, and the energy storage station is connected with a 35kV bus 1 of the wind power station. The energy storage station is formed by connecting a plurality of energy storage current transformation units in parallel. The FC filter is connected to the transformer winding 3.
Referring to fig. 3, the energy storage converter unit includes a battery compartment and a converter compartment, the battery compartment is composed of a battery pack, the converter compartment is composed of two dc/ac bidirectional converters and a transformer, the dc/ac bidirectional converters convert dc power provided by the battery pack into three-phase ac power, the transformer boosts the three-phase ac power to 35kV, and the three-phase ac power is connected to the low-voltage side 3 of the induction filter transformer and connected to the 35kV bus 2, so that the battery is connected to the grid and the fan.
Referring to fig. 4, when the active power output of the wind turbine generator system is unstable, the energy storage converter unit in the energy storage station is adjusted to adjust the active power of the system. When the wind power station has insufficient active power, the data center station controls the battery of the energy storage station to discharge, and the electric energy output of the energy storage station is increased; when the wind generating set has surplus active power, the data center station controls the battery of the energy storage system to charge and store the surplus electric energy. Through the charge and discharge control of the energy storage station, the wind energy utilization rate can be obviously improved, and the abandoned wind is reduced; the wind power adjustability is improved, and peak clipping and valley filling are achieved. The electric energy output and input of the energy storage station are adjusted in a mode of combining the driving mode and the driven mode, so that the economic operation of the system can be realized, and the economic benefit is generated. When the voltage of the power system bus fluctuates, the energy storage station current conversion unit is adjusted, so that the energy storage station has the SVG function, and dynamic reactive power compensation is performed. The system can also significantly suppress harmonics using an inductive filter transformer and an FC filter.
The wind power converter of the wind power station works in a maximum power tracking control mode, and the main controller collects wind power P output by the wind generating setwObtaining smoother wind power P 'after passing through a low-pass filter'w(ii) a Obtaining the given value P of the active power of the energy storage convertere *，Pe *＝Pw-P′wIn combination with Pe *Controlling an energy storage transformer using PQ control methodsActual output power P of current deviceeTo obtain the power P of the AC busac-bus，Pw+Pe＝Pac-bus；
Adjusting and controlling P according to the requirements of the planned power curve of the alternating-current buseAnd judging by using data collected by the data center station to realize that the deviation of the actual power curve and the planned power curve is within an allowable range:
1) when P is presentw<Pac-busIncreasing the power output of the energy-storing converter, Pe>0, controlling the energy storage system to discharge;
2) when P is presentw>Pac-busWhile increasing the power input of the energy-storing converter, Pe<And 0, controlling the energy storage system to charge.
The output power of intermittent energy sources such as wind power generation and the like fluctuates, and the stability of the system is influenced. By controlling the output power of the energy storage converter, the fluctuation component of the intermittent energy output power is compensated, the power fluctuation can be smoothed and suppressed, and the stability is enhanced.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.
Claims (5)
1. A novel multi-station-in-one topological structure of a wind power energy storage power station is characterized by comprising a transformer substation, a wind power station, an energy storage station and a data center station;
a high-voltage side winding of an induction filter transformer in the transformer substation is connected with a 110kV bus of a power system of the transformer substation, and an FC filter, an energy storage station and a wind power station of the transformer substation are connected to a low-voltage side winding of the induction filter transformer through a 35kV bus of the power system of the transformer substation; the wind power station and the energy storage station are controlled by a data center station.
2. The novel topological structure of the wind power energy storage power station with the unified multi-station structure as claimed in claim 1, wherein the wind power station is connected to one low-voltage side winding of the induction filter transformer through a first power system 35kV bus of the transformer substation, the FC filter and the energy storage system of the transformer substation are connected in parallel to a second power system 35kV bus of the transformer substation, and are connected to the other low-voltage side winding of the induction filter transformer through the second power system 35kV bus of the transformer substation.
3. The novel wind power station and energy storage station topology structure of claim 1, wherein the wind power station and the energy storage station are connected in parallel to a first power system 35kV bus of the substation, and are connected to one low voltage side winding of the induction filter transformer through the first power system 35kV bus of the substation, and the FC filter is connected to another low voltage side winding of the induction filter transformer through a second power system 35kV bus of the substation.
4. The novel wind power energy storage power station multi-station-in-one topology structure of any one of claims 1 to 3, wherein the energy storage station comprises a plurality of energy storage converter units connected in parallel.
5. The novel wind power energy storage power station multi-station-in-one topology structure as claimed in claim 4, wherein the energy storage converter unit comprises a battery compartment and a converter compartment which are connected in sequence, the battery compartment comprises a plurality of batteries connected in parallel, the converter compartment comprises two DC/AC bidirectional converters and a transformer, and the two DC/AC bidirectional converters are connected in parallel and then connected with the transformer.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110224436A (en) * | 2019-06-25 | 2019-09-10 | 湖南华大电工高科技有限公司 | A kind of novel wind power energy-accumulating power station topological structure |
| CN112023302A (en) * | 2020-09-09 | 2020-12-04 | 中国电力科学研究院有限公司 | Fire fighting system for three-station-in-one comprehensive station and fire fighting method thereof |
| CN113193581A (en) * | 2021-05-17 | 2021-07-30 | 广州智光储能科技有限公司 | Energy storage system grid-connected device |
| CN113241786A (en) * | 2021-05-17 | 2021-08-10 | 广州智光储能科技有限公司 | Power grid access method of new energy system |
| CN115588999A (en) * | 2022-12-08 | 2023-01-10 | 湖南华大电工高科技有限公司 | AVC control strategy method suitable for three-station-in-one energy storage wind power station |
-
2019
- 2019-06-20 CN CN201920940491.6U patent/CN210041352U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110224436A (en) * | 2019-06-25 | 2019-09-10 | 湖南华大电工高科技有限公司 | A kind of novel wind power energy-accumulating power station topological structure |
| CN112023302A (en) * | 2020-09-09 | 2020-12-04 | 中国电力科学研究院有限公司 | Fire fighting system for three-station-in-one comprehensive station and fire fighting method thereof |
| CN113193581A (en) * | 2021-05-17 | 2021-07-30 | 广州智光储能科技有限公司 | Energy storage system grid-connected device |
| CN113241786A (en) * | 2021-05-17 | 2021-08-10 | 广州智光储能科技有限公司 | Power grid access method of new energy system |
| CN115588999A (en) * | 2022-12-08 | 2023-01-10 | 湖南华大电工高科技有限公司 | AVC control strategy method suitable for three-station-in-one energy storage wind power station |
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