CN220401433U - Flywheel energy storage auxiliary power plant control cabinet emergency power supply system - Google Patents
Flywheel energy storage auxiliary power plant control cabinet emergency power supply system Download PDFInfo
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- CN220401433U CN220401433U CN202322085594.8U CN202322085594U CN220401433U CN 220401433 U CN220401433 U CN 220401433U CN 202322085594 U CN202322085594 U CN 202322085594U CN 220401433 U CN220401433 U CN 220401433U
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- 230000000694 effects Effects 0.000 description 2
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- 101710176296 Switch 2 Proteins 0.000 description 1
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- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000009466 transformation 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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
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Abstract
The utility model discloses an emergency power supply system of a flywheel energy storage auxiliary power plant control cabinet, and belongs to the field of power plant control cabinets. When the urban power grid supplies power normally, the first switch is closed, the urban power grid is used for supplying power to the power plant control cabinet, and meanwhile, the flywheel energy storage system is charged; when the urban power grid is in an emergency or fault state, the first switch is disconnected, and the flywheel energy storage system supplies power to the power plant control cabinet in an emergency mode. The flywheel energy storage and discharge efficiency is high, the instantaneous power is high, and the problem of instantaneous power supply under an emergency state can be effectively solved.
Description
Technical Field
The utility model relates to the field of power plant control cabinets, in particular to an emergency power supply system of a flywheel energy storage auxiliary power plant control cabinet.
Background
The control of electrical energy is one of the most critical and important links in modern systems. The problem of maintaining the electrical energy safety of the power supply system cannot be neglected. For the alternating current side, the adverse effect on the electric energy safety of the public power grid is increasing due to the increasing number of nonlinear and discontinuous loads. Secondly, the power plant control cabinet is the core of the whole electric energy control system, and the requirements on the power supply reliability are more strict. Once a power outage occurs, a significant safety issue will arise. Therefore, how to solve the problem of instantaneous power supply in the emergency state of the power plant control cabinet has important significance for the safety of electric energy.
Disclosure of Invention
The utility model aims to provide an emergency power supply system of a flywheel energy storage auxiliary power plant control cabinet, which can effectively solve the problem of instantaneous power supply in an emergency state.
In order to achieve the above object, the present utility model provides the following solutions:
an emergency power supply system for a flywheel energy storage auxiliary power plant control cabinet, the system comprising: the system comprises a main transformer, a first switch, a UPS system, a flywheel energy storage system and an AC/DC transformer substation;
the primary side of the main transformer is connected with an urban power grid, the secondary side of the main transformer is connected with one end of a first switch, and the other end of the first switch is connected with the first end of the UPS system;
the second end of the UPS system is connected with the electric energy end of the flywheel energy storage system, the third end of the UPS system is connected with the input end of the AC/DC transformer substation, and the output end of the AC/DC transformer substation is connected with the power plant control cabinet through a direct current bus;
when the urban power grid supplies power normally, the first switch is closed, the main transformer transforms the alternating current output by the urban power grid, the UPS system rectifies the transformed alternating current and outputs the alternating current, and the AC/DC transformer substation converts the alternating current output by the UPS system into direct current and then inputs the direct current into the direct current bus to supply to the power plant control cabinet; the flywheel energy storage system is used for charging under the condition of acquiring alternating current output by the UPS system;
when the urban power grid is in an emergency or fault state, the first switch is disconnected, the flywheel energy storage system is used for releasing electric energy, and the released electric energy is transmitted to the direct current bus through the UPS system and the AC/DC transformer substation and is supplied to the power plant control cabinet.
According to the specific embodiment provided by the utility model, the utility model discloses the following technical effects:
the utility model discloses an emergency power supply system of a flywheel energy storage auxiliary power plant control cabinet, which is characterized in that when an urban power grid supplies power normally, a first switch is closed, the urban power grid is used for supplying power to the power plant control cabinet, and meanwhile, the flywheel energy storage system is charged; when the urban power grid is in an emergency or fault state, the first switch is disconnected, and the flywheel energy storage system supplies power to the power plant control cabinet in an emergency mode. The flywheel energy storage and discharge efficiency is high, the instantaneous power is high, and the problem of instantaneous power supply under an emergency state can be effectively solved.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of an emergency power supply system of a flywheel energy storage auxiliary power plant control cabinet according to an embodiment of the present utility model.
Symbol description: the system comprises a main transformer-1, a first switch-2, a UPS system-3, an AC/DC transformer substation-4, a standby generator-5, an ATSE transfer switch-6, a second switch-7, an AC/DC converter-8, a first DC/AC converter-9, a second DC/AC converter-10, a flywheel energy storage device-11, a direct current bus-12, a power plant control cabinet-13, a power plant control room lighting device-14, a bypass switch-15 and an urban power grid-16.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description.
As shown in fig. 1, an embodiment of the present utility model provides an emergency power supply system for a flywheel energy storage auxiliary power plant control cabinet, the system includes: a main transformer 1, a first switch 2, a UPS system 3, a flywheel energy storage system and an AC/DC substation 4.
The primary side of the main transformer 1 is connected to the urban power grid 16, the secondary side of the main transformer 1 is connected to one end of the first switch 2, and the other end of the first switch 2 is connected to the first end of the UPS system 3. The second end of the UPS system 3 is connected with the electric energy end of the flywheel energy storage system, the third end of the UPS system 3 is connected with the input end of the AC/DC transformer substation 4, and the output end of the AC/DC transformer substation 4 is connected with the power plant control cabinet 13 through the direct current bus 12.
When the urban power grid 16 supplies power normally, the first switch 2 is closed, the main transformer 1 transforms the alternating current output by the urban power grid 16, the UPS system 3 rectifies the transformed alternating current and outputs the alternating current, the AC/DC transformer substation 4 converts the alternating current output by the UPS system 3 into direct current and then sends the direct current to the direct current bus 12, and the direct current is supplied to the power plant control cabinet 13; the flywheel energy storage system is used for charging under the condition of acquiring alternating current output by the UPS system 3.
When the urban power network 16 is in an emergency or fault state, the first switch 2 is opened, the flywheel energy storage system is used for releasing electric energy, and the released electric energy is transmitted to the direct current bus 12 through the UPS system 3 and the AC/DC substation 4 to be supplied to the power plant control cabinet 13.
Further, the system further comprises: a backup generator 5, an ATSE changeover switch 6 and a second switch 7.
The switching control end of the ATSE switch 6 is respectively connected with the secondary side of the main transformer 1 or the electric energy output end of the standby generator 5, the electric energy output end of the ATSE switch 6 is respectively connected with one end of the first switch 2 and one end of the second switch 7, and the other end of the second switch 7 is connected with the fourth end of the UPS system 3.
When the urban power grid 16 supplies power normally, the first switch 2 is closed, the second switch 7 is opened, and the ATSE changeover switch 6 is communicated with the secondary side of the main transformer 1. When the urban power grid 16 is in an emergency or fault state, the first switch 2 is opened, the second switch 7 is closed, the ATSE change-over switch 6 is communicated with the electric energy output end of the standby generator 5, and the power supply of the urban power grid 16 is automatically switched to the power supply of the standby generator 5.
Referring to fig. 1, the ups system 3 includes: an AC/DC converter 8 and a first DC/AC converter 9. One end of the AC/DC converter 8 is connected with the other end of the second switch 7, and the other end of the AC/DC converter 8 is respectively connected with one end of the first DC/AC converter 9 and the electric energy end of the flywheel energy storage system. The other end of the first DC/AC converter 9 is connected to the other end of the first switch 2 and the input of the AC/DC substation 4, respectively.
When the urban power grid 16 supplies power normally, the first switch 2 is closed, the second switch 7 is opened, and the first DC/AC converter 9 is used for converting alternating current into direct current and then sending the direct current to the flywheel energy storage system.
When the urban power grid 16 is in an emergency or fault state, the first switch 2 is opened, the second switch 7 is closed, and the AC/DC converter 8 is used for converting the alternating current generated by the standby generator 5 into direct current; the first DC/AC converter 9 is configured to reconvert the direct current input from the AC/DC converter 8 into alternating current, and transmit the alternating current to the AC/DC substation 4; the first DC/AC converter 9 is configured to convert the direct current output by the flywheel energy storage system into alternating current, and transmit the alternating current to the AC/DC substation 4.
The flywheel energy storage system includes: a plurality of flywheel energy storage devices. The electric energy ends of the flywheel energy storage devices 11 are connected with the other end of the AC/DC converter 8.
Specifically, the flywheel energy storage device includes: a second DC/AC converter 10 and a flywheel energy storage device 11. One end of the second DC/AC converter 10 is connected to the other end of the AC/DC converter 8, and the other end of the second DC/AC converter 10 is connected to the flywheel energy storage device 11. When the urban power grid 16 supplies power normally, the second DC/AC converter 10 is configured to convert the alternating current of the first DC/AC converter 9 into direct current again; the flywheel energy storage device 11 is used for charging after the direct current of the second DC/AC converter 10 is obtained. When the urban power grid 16 is in an emergency or fault state, the flywheel energy storage device 11 is also used for releasing electric energy and outputting alternating current; the second DC/AC converter 10 is further configured to convert the alternating current output by the flywheel energy storage device 11 into direct current; the first DC/AC converter 9 is configured to convert the direct current output by the second DC/AC converter 10 into alternating current, and transmit the alternating current to the AC/DC substation 4.
The AC/DC substation 4 is also used for providing power to the plant control room lighting devices 14 via the direct current bus 12, among other things.
In fig. 1, the UPS system 3 further includes a bypass switch 15, the bypass switch 15 functioning as: the bypass switch 15 is turned off in the normal state of the UPS system 3; when the UPS system 3 is overhauled, the bypass switch 15 is manually closed to ensure the normal power supply of the load equipment; after the maintenance is completed, the UPS system 3 is restarted, the UPS system 3 is turned to normal operation, and the bypass switch 15 is turned off.
Connection relation and cooperation process:
the urban power grid 16 is alternating current and is connected with the main transformer 1 for transformation. The transformed alternating current and the backup generator 5 are connected to an ATSE switcher 6. The ATSE changeover switch 6 is connected with the UPS system 3 for rectification and inversion. The output of the AC/DC converter 8 in the UPS system 3 is connected to a second DC/AC converter 10. The output end of the UPS system 3 is connected with the input end of the AC/DC transformer substation 4. The AC/DC substation 4 rectifies the AC power output from the UPS system 3 into DC power, which is then supplied to the power plant control cabinet 13 and the power plant control room lighting equipment 14 via the DC bus 12.
When the urban power grid 16 supplies power normally, the UPS system 3 rectifies and outputs alternating current to the AC/DC substation 4 to supply power to the power plant control cabinet 13, the lighting system and the like, and simultaneously charges the flywheel energy storage device 11. When the urban power grid 16 is in an emergency or fault state, the plurality of flywheel energy storage connection UPS systems 3 can realize millisecond-level response to provide uninterrupted power guarantee for the power plant control cabinet 13, and meanwhile, the ATSE change-over switch 6 automatically switches to supply power for the standby generator 5.
The flywheel energy storage is introduced into the emergency power supply system of the power plant control cabinet, so that the power plant control cabinet has high charging and discharging efficiency, high instantaneous power and high response speed, and can effectively solve the problem of instantaneous power supply in an emergency state.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
The principles and embodiments of the present utility model have been described herein with reference to specific examples, the description of which is intended only to assist in understanding the methods of the present utility model and the core ideas thereof; also, it is within the scope of the present utility model to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the utility model.
Claims (6)
1. An emergency power supply system for a flywheel energy storage auxiliary power plant control cabinet, comprising: the system comprises a main transformer, a first switch, a UPS system, a flywheel energy storage system and an AC/DC transformer substation;
the primary side of the main transformer is connected with an urban power grid, the secondary side of the main transformer is connected with one end of a first switch, and the other end of the first switch is connected with the first end of the UPS system;
the second end of the UPS system is connected with the electric energy end of the flywheel energy storage system, the third end of the UPS system is connected with the input end of the AC/DC transformer substation, and the output end of the AC/DC transformer substation is connected with the power plant control cabinet through a direct current bus;
when the urban power grid supplies power normally, the first switch is closed, the main transformer transforms the alternating current output by the urban power grid, the UPS system rectifies the transformed alternating current and outputs the alternating current, and the AC/DC transformer substation converts the alternating current output by the UPS system into direct current and then inputs the direct current into the direct current bus to supply to the power plant control cabinet; the flywheel energy storage system is used for charging under the condition of acquiring alternating current output by the UPS system;
when the urban power grid is in an emergency or fault state, the first switch is disconnected, the flywheel energy storage system is used for releasing electric energy, and the released electric energy is transmitted to the direct current bus through the UPS system and the AC/DC transformer substation and is supplied to the power plant control cabinet.
2. The flywheel energy storage assisted power plant control cabinet emergency power supply system of claim 1, further comprising: a backup generator, an ATSE switcher, and a second switch;
the switching control end of the ATSE switch is respectively connected with the electric energy output end of the secondary side of the main transformer or the standby generator, the electric energy output end of the ATSE switch is respectively connected with one end of the first switch and one end of the second switch, and the other end of the second switch is connected with the fourth end of the UPS system;
when the urban power grid supplies power normally, the first switch is closed, the second switch is opened, and the ATSE change-over switch is communicated with the secondary side of the main transformer;
when the urban power grid is in an emergency or fault state, the first switch is opened, the second switch is closed, the ATSE change-over switch is communicated with the electric energy output end of the standby generator, and the power supply of the urban power grid is automatically switched to the power supply of the standby generator.
3. The flywheel energy storage assisted power plant control cabinet emergency power supply system of claim 2, wherein the UPS system comprises: an AC/DC converter and a first DC/AC converter;
one end of the AC/DC converter is connected with the other end of the second switch, and the other end of the AC/DC converter is respectively connected with one end of the first DC/AC converter and the electric energy end of the flywheel energy storage system;
the other end of the first DC/AC converter is connected with the other end of the first switch and the input end of the AC/DC transformer substation respectively;
when the urban power grid supplies power normally, the first switch is closed, the second switch is opened, and the first DC/AC converter is used for converting alternating current into direct current and then sending the direct current to the flywheel energy storage system;
when the urban power grid is in an emergency or fault state, the first switch is opened, the second switch is closed, and the AC/DC converter is used for converting alternating current generated by the standby generator into direct current; the first DC/AC converter is used for converting the direct current input by the AC/DC converter into alternating current again and transmitting the alternating current to the AC/DC transformer substation; the first DC/AC converter is used for converting direct current output by the flywheel energy storage system into alternating current and transmitting the alternating current to the AC/DC transformer substation.
4. A flywheel energy storage assisted power plant control cabinet emergency power supply system as claimed in claim 3, characterized in that the flywheel energy storage system comprises: a plurality of flywheel energy storage devices;
the electric energy ends of the flywheel energy storage devices are connected with the other end of the AC/DC converter.
5. The flywheel energy storage assisted power plant control cabinet emergency power supply system of claim 4, wherein the flywheel energy storage device comprises: a second DC/AC converter and a flywheel energy storage device;
one end of the second DC/AC converter is connected with the other end of the AC/DC converter, and the other end of the second DC/AC converter is connected with the flywheel energy storage device;
when the urban power grid supplies power normally, the second DC/AC converter is used for converting the alternating current of the first DC/AC converter into direct current again; the flywheel energy storage device is used for charging after acquiring the direct current of the second DC/AC converter;
when the urban power grid is in an emergency or fault state, the flywheel energy storage device is also used for releasing electric energy and outputting alternating current; the second DC/AC converter is also used for converting the alternating current output by the flywheel energy storage device into direct current; the first DC/AC converter is used for converting the direct current output by the second DC/AC converter into alternating current and transmitting the alternating current to the AC/DC transformer substation.
6. The flywheel energy storage assisted power plant control cabinet emergency power supply system of claim 1, wherein the AC/DC substation is further configured to provide power to the plant control room lighting devices via the DC bus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322085594.8U CN220401433U (en) | 2023-08-04 | 2023-08-04 | Flywheel energy storage auxiliary power plant control cabinet emergency power supply system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322085594.8U CN220401433U (en) | 2023-08-04 | 2023-08-04 | Flywheel energy storage auxiliary power plant control cabinet emergency power supply system |
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| CN220401433U true CN220401433U (en) | 2024-01-26 |
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| CN202322085594.8U Active CN220401433U (en) | 2023-08-04 | 2023-08-04 | Flywheel energy storage auxiliary power plant control cabinet emergency power supply system |
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| CN (1) | CN220401433U (en) |
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- 2023-08-04 CN CN202322085594.8U patent/CN220401433U/en active Active
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