CN210297268U - Hybrid energy storage system for thermal power combined AGC frequency modulation - Google Patents
Hybrid energy storage system for thermal power combined AGC frequency modulation Download PDFInfo
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- CN210297268U CN210297268U CN201921184351.7U CN201921184351U CN210297268U CN 210297268 U CN210297268 U CN 210297268U CN 201921184351 U CN201921184351 U CN 201921184351U CN 210297268 U CN210297268 U CN 210297268U
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Abstract
The utility model relates to a supplementary frequency modulation technical field of thermal power generating unit, concretely relates to a mix energy storage system that is used for thermal power to unite AGC frequency modulation. This hybrid energy storage system includes: the system comprises a flywheel energy storage subsystem, a battery energy storage subsystem and an energy management system. The flywheel energy storage subsystem and the battery energy storage subsystem are arranged in a modularized mode, a plurality of flywheel energy storage units in the flywheel energy storage subsystem are arranged relatively independently and can operate independently, a plurality of battery energy storage units in the battery energy storage subsystem are arranged relatively independently and can operate independently, maintenance is facilitated, and the safety of the hybrid energy storage system is improved; the flywheel energy storage subsystem and the battery energy storage subsystem are cooperatively controlled through the energy management system, the advantages of high charging and discharging response speed, long service life and good safety of the flywheel energy storage subsystem and the characteristic of high energy density of the battery energy storage subsystem are fully utilized, and the effects of improving the comprehensive index of AGC frequency modulation performance, prolonging the service life of a battery and improving the overall economy of the system are achieved.
Description
Technical Field
The utility model relates to a supplementary frequency modulation technical field of thermal power generating unit, concretely relates to a mix energy storage system that is used for thermal power to unite AGC frequency modulation.
Background
The power system needs to keep real-time power balance between a power generation side and a power utilization side in stable operation, the power grid dispatching center adjusts active power output of a frequency modulation power supply in a power grid in real time through an Automatic Generation Control (AGC) system, control over the power grid frequency and tie line power is achieved, the problem of short-time random power imbalance in a regional power grid is solved, and technical performance requirements of high response speed, high adjustment precision, frequent conversion of power adjustment directions and the like are provided for the performance of the frequency modulation power supply, and the performance requirements are examined. The AGC frequency modulation function of the power grid is mainly provided by conventional power supplies including hydroelectric power units, gas generating units and thermal power units. Because the power supply systems have response inertia, a series of complex processes are carried out when primary energy is converted into electric energy, particularly, the AGC frequency modulation performance of the thermal power generating unit has a larger gap compared with the expected power grid, and the thermal power generating unit is limited by technical factors such as an energy conversion process, a slow climbing speed and the like, so that the problems of long response time, slow regulation speed, poor regulation precision and the like are presented in the AGC frequency modulation process.
In recent years, with the progress of energy storage technology, the AGC performance of a thermal power generating unit is improved by utilizing the characteristic of rapid charging and discharging of an energy storage system, and a mode of performing combined AGC by adopting the energy storage system and the thermal power generating unit is rapidly developed, so that a plurality of application project cases appear. At present, a lithium ion battery energy storage system is generally adopted in China to participate in the joint AGC frequency modulation of a thermal power generating unit, and the lithium ion battery energy storage system generally adopts 2C charge-discharge multiplying power. In the operation process of a project, the problems of short cycle life, low safety and the like of the lithium ion battery are gradually exposed.
In view of this, it is an urgent technical problem in the art to provide a new hybrid energy storage system for thermal power joint AGC frequency modulation to overcome the above drawbacks in the prior art.
Disclosure of Invention
An object of the utility model is to the above-mentioned defect of prior art, provide a mix energy storage system that is used for thermoelectricity to unite AGC frequency modulation.
The purpose of the utility model can be realized by the following technical measures:
the embodiment of the utility model provides a mixed energy storage system that is used for thermoelectricity to unite AGC frequency modulation is connected with the interchange generating line, and this mixed energy storage system includes:
the flywheel energy storage subsystem comprises a flywheel energy storage monitoring unit and at least one flywheel energy storage unit connected with the flywheel energy storage monitoring unit, and the flywheel energy storage units are connected into the alternating current bus in a parallel connection mode;
the battery energy storage subsystem comprises a battery energy storage monitoring unit and at least one battery energy storage unit connected with the battery energy storage monitoring unit, and the plurality of battery energy storage units are connected to the alternating current bus in a parallel connection mode;
the energy management system is connected with the flywheel energy storage subsystem and the battery energy storage subsystem respectively, monitors the running data of the flywheel energy storage subsystem and the running data of the battery energy storage subsystem, receives a first control instruction sent by the external control system, generates a second control instruction according to the running data of the flywheel energy storage subsystem, the running data of the battery energy storage subsystem and the first control instruction, and controls the charging and discharging states of the flywheel energy storage subsystem and the battery energy storage subsystem.
Preferably, each flywheel energy storage unit comprises a first circuit breaker, a first transformer, a first energy storage converter and a flywheel energy storage assembly which are connected in sequence; the high-voltage side of the first transformer is connected to the alternating-current bus through the first breaker, the low-voltage side of the first transformer is connected with the alternating-current side of the first energy storage converter, and the direct-current side of the first energy storage converter is connected with the flywheel energy storage assembly.
Preferably, the flywheel energy storage monitoring unit is connected with the first energy storage converter, monitors the operation data of the flywheel energy storage unit, receives the second control instruction, and controls the power conversion direction and the power conversion size of the first energy storage converter according to the operation data of the flywheel energy storage unit and the second control instruction.
Preferably, the low voltage side of the first transformer is provided with a single winding or a split winding, when the low voltage side of the first transformer is provided with a single winding, the low voltage side of the first transformer is connected with one first energy storage converter, and when the low voltage side of the first transformer is provided with a split winding, the low voltage side of the first transformer is connected with a plurality of first energy storage converters.
Preferably, the number of the flywheel energy storage assemblies is multiple, and the flywheel energy storage assemblies are connected with the direct current side of the first energy storage converter in a parallel connection mode.
Preferably, each battery energy storage unit comprises a second circuit breaker, a second transformer, a second energy storage converter and a battery energy storage assembly which are connected in sequence; the high-voltage side of the second transformer is connected to the alternating-current bus through the second circuit breaker, the low-voltage side of the second transformer is connected with the alternating-current side of the second energy storage converter, and the direct-current side of the second energy storage converter is connected with the battery energy storage assembly.
Preferably, the battery energy storage monitoring unit is connected with the second energy storage converter, the battery energy storage monitoring unit monitors the operation data of the battery energy storage unit and receives the second control instruction, and the power conversion direction and the power conversion size of the second energy storage converter are controlled according to the operation data of the battery energy storage unit and the second control instruction.
Preferably, the low voltage side of the second transformer is configured as a single winding or a split winding, and when the low voltage side of the second transformer is configured as a single winding, the low voltage side of the second transformer is connected to one of the second energy storage converters, and when the low voltage side of the second transformer is configured as a split winding, the low voltage side of the second transformer is connected to a plurality of the second energy storage converters.
Preferably, the number of the battery energy storage assemblies is multiple, and the multiple battery energy storage assemblies are connected with the direct current side of the second energy storage converter in a parallel connection mode.
Preferably, the energy management system is connected to the external control system through an external communication interface.
In the hybrid energy storage system of the utility model, the flywheel energy storage subsystem and the battery energy storage subsystem are arranged in a modularized manner, a plurality of flywheel energy storage units in the flywheel energy storage subsystem are arranged relatively independently and can operate independently, a plurality of battery energy storage units in the battery energy storage subsystem are arranged relatively independently and can operate independently, the maintenance is convenient, and the safety of the hybrid energy storage system is improved; the flywheel energy storage subsystem and the battery energy storage subsystem are cooperatively controlled through the energy management system, the advantages of high charging and discharging response speed, long service life and good safety of the flywheel energy storage subsystem and the characteristic of high energy density of the battery energy storage subsystem are fully utilized, and the effects of improving the comprehensive index of AGC frequency modulation performance, prolonging the service life of a battery and improving the overall economy of the system are achieved.
Drawings
Fig. 1 is a schematic structural diagram of the hybrid energy storage system of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the following, many aspects of the present invention will be better understood with reference to the drawings. The components in the drawings are not necessarily to scale. Instead, emphasis is placed upon clearly illustrating the components of the present invention. Moreover, in the several views of the drawings, like reference numerals designate corresponding parts.
The word "exemplary" or "illustrative" as used herein means serving as an example, instance, or illustration. Any embodiment described herein as "exemplary" or "illustrative" is not necessarily to be construed as preferred or advantageous over other embodiments. All of the embodiments described below are exemplary embodiments provided to enable persons skilled in the art to make and use the examples of the disclosure and are not intended to limit the scope of the disclosure, which is defined by the claims. In other instances, well-known features and methods have been described in detail so as not to obscure the invention. For purposes of the description herein, the terms "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," and derivatives thereof shall relate to the invention as oriented in fig. 1. Furthermore, there is no intention to be bound by any expressed or implied theory presented in the preceding technical field, background, brief summary or the following detailed description. It is also to be understood that the specific devices and processes illustrated in the attached drawings, and described in the following specification are simply exemplary embodiments of the inventive concepts defined in the appended claims. Hence, specific dimensions and other physical characteristics relating to the embodiments disclosed herein are not to be considered as limiting, unless the claims expressly state otherwise.
The embodiment of the utility model discloses a mix energy storage system for thermoelectricity is united AGC frequency modulation please see FIG 1, should mix energy storage system and exchange generating line 10 and be connected, should mix energy storage system and include: a flywheel energy storage subsystem 20, a battery energy storage subsystem 30, and an energy management system 40.
The flywheel energy storage subsystem 20 comprises a flywheel energy storage monitoring unit 202 and at least one flywheel energy storage unit 201 connected with the flywheel energy storage monitoring unit 202, and the flywheel energy storage units 201 are connected to an alternating current bus 10 in a parallel connection mode; the battery energy storage subsystem 30 comprises a battery energy storage monitoring unit 302 and at least one battery energy storage unit 301 connected with the battery energy storage monitoring unit 302, and the plurality of battery energy storage units 301 are connected to the alternating current bus 10 in a parallel connection mode; the energy management system 40 is connected with an external control system, the energy management system 40 is respectively connected with the flywheel energy storage monitoring unit 202 and the battery energy storage monitoring unit 302, and the energy management system 40 is configured to monitor operation data of the flywheel energy storage subsystem 20 and operation data of the battery energy storage subsystem 30, receive a first control instruction sent by the external control system, generate a second control instruction according to the operation data of the flywheel energy storage subsystem 20, the operation data of the battery energy storage subsystem 30 and the first control instruction, and control charge and discharge states of the flywheel energy storage subsystem 20 and the battery energy storage subsystem 30.
Further, the operation data of the flywheel energy storage subsystem 20 includes, but is not limited to, an energy storage state of charge, a rated power, an SOC value, a power state of the energy storage converter, and a self-test state, and the operation data of the battery energy storage subsystem 30 includes an energy storage state of charge, an SOC value, a power state of the energy storage converter, and a self-test state.
In this embodiment, the hybrid energy storage system and the thermal power generating unit are combined to perform AGC frequency modulation, the flywheel energy storage subsystem 20 and the battery energy storage subsystem 30 share the charge and discharge tasks of the hybrid energy storage system, and the energy management system 40 determines the charge and discharge tasks of the flywheel energy storage subsystem 20 and the battery energy storage subsystem 30 according to the operation data of the flywheel energy storage subsystem 20, the operation data of the battery energy storage subsystem 30 and a first control instruction sent by an external control system, generates a second control instruction, and controls the flywheel energy storage subsystem 20 and the battery energy storage subsystem 30 to perform cooperative charge and discharge.
In this embodiment, flywheel energy storage subsystem 20 and battery energy storage subsystem 30 adopt the modularization setting on the one hand, improve mixed energy storage system's security, and a plurality of flywheel energy storage unit 201 in on the other hand flywheel energy storage subsystem 20 set up relatively independently, can independent operation, and a plurality of battery energy storage unit 301 in the battery energy storage subsystem 30 set up relatively independently, can independent operation, and this mode of setting has increased mixed energy storage system's power regulation capacity and adaptability, convenient the maintenance simultaneously.
The flywheel energy storage subsystem 20 and the battery energy storage subsystem 30 are adopted to form a hybrid energy storage system, the energy management system 40 is used for cooperative control, the advantages of high charging and discharging response speed, long service life, good safety and the like of the flywheel energy storage subsystem 20 and the characteristic of high energy density of the battery energy storage subsystem 30 are fully utilized, and the effects of improving the comprehensive index of AGC frequency modulation performance, prolonging the service life of an electrochemical battery and improving the overall economy of the system are achieved.
Further, each flywheel energy storage unit 201 comprises a first circuit breaker 2010, a first transformer 2011, a first energy storage converter 2012 and a flywheel energy storage assembly 2013 which are connected in sequence; the high-voltage side of the first transformer 2011 is connected to the ac bus 10 through the first circuit breaker 2010, the low-voltage side of the first transformer 2011 is connected to the ac side of the first energy storage converter 2012, and the dc side of the first energy storage converter 2012 is connected to the flywheel energy storage assembly 2013.
In this embodiment, each flywheel energy storage unit 201 is isolated by the first transformer 2011, and is connected to the grid at the ac bus 10, and when a certain flywheel energy storage unit 201 is overhauled or abnormal, the flywheel energy storage unit can be independently withdrawn without affecting the operation of other flywheel energy storage units 201.
Further, the flywheel energy storage monitoring unit 202 is connected to the first energy storage converter 2012, and the flywheel energy storage monitoring unit 202 is configured to monitor operation data of the flywheel energy storage unit 201 and receive a second control instruction sent by the energy management system 40, and control a power conversion direction and a power conversion magnitude of the first energy storage converter 2012 according to the operation data of the flywheel energy storage unit 201 and the second control instruction.
In this embodiment, the flywheel energy storage monitoring unit 202 is in communication connection with the first energy storage converter 2012 in each flywheel energy storage unit 201, and the flywheel energy storage monitoring unit 202 monitors the operation data of each flywheel energy storage unit 201 and receives the second control instruction sent by the energy management system 40, and controls the power conversion direction and the power conversion magnitude of the corresponding first energy storage converter 2012 according to the operation data of each flywheel energy storage unit 201 and the second control instruction, so as to control the charging and discharging state of each flywheel energy storage unit 201.
The flywheel energy storage subsystem 20 adopts an independent flywheel energy storage monitoring unit 202, independently receives the control of the energy management system 40, independently performs charging and discharging, and improves the safety of the flywheel energy storage subsystem 20.
Further, the low voltage side of the first transformer 2011 is configured as a single winding or a split winding, when the low voltage side of the first transformer 2011 is configured as a single winding, the low voltage side of the first transformer 2011 is connected to one of the first energy storage converters 2012, and when the low voltage side of the first transformer 2011 is configured as a split winding, the low voltage side of the first transformer 2011 is connected to a plurality of the first energy storage converters 2012.
Further, a plurality of flywheel energy storage assemblies 2013 are arranged, and the flywheel energy storage assemblies 2013 are connected with the direct current side of the first energy storage converter 2012 in parallel.
In the first embodiment, in one flywheel energy storage unit 201, the low voltage side of the first transformer 2011 is provided with a single winding, the low voltage side of the first transformer 2011 is connected with one first energy storage converter 2012, and the direct current side of the first energy storage converter 2012 is connected with a plurality of flywheel energy storage assemblies 2013; in the second embodiment, in one flywheel energy storage unit 201, when the low-voltage side of the first transformer 2011 is configured as a split winding, the low-voltage side of the first transformer 2011 is connected to a plurality of first energy storage converters 2012, and the dc side of the first energy storage converter 2012 is connected to a plurality of flywheel energy storage assemblies 2013. The flywheel energy storage subsystem 20 may include a plurality of flywheel energy storage units 201 described in the first embodiment, a plurality of flywheel energy storage units 201 described in the second embodiment, and a combination of the flywheel energy storage units 201 of the first embodiment and the second embodiment.
The combination of the flywheel energy storage unit 201 that each is the same or different in combination, flywheel energy storage subsystem 20 that the split quantity of the split winding that flywheel energy storage unit 201 set up according to the low pressure side of first transformer 2011 is different and flywheel energy storage subassembly 2013's the quantity difference forms is also in the utility model discloses an within the protection scope, it is not repeated here one by one.
On the basis of the above embodiments, in this embodiment, each of the battery energy storage units 301 includes a second circuit breaker 3010, a second transformer 3011, a second energy storage converter 3012 and a battery energy storage assembly 3013, which are connected in sequence; the high-voltage side of the second transformer 3011 is connected to the ac bus 10 through the second circuit breaker 3010, the low-voltage side of the second transformer 3011 is connected to the ac side of the second energy storage converter 3012, and the dc side of the second energy storage converter 3012 is connected to the battery energy storage component 3013.
In this embodiment, each battery energy storage unit 301 is isolated by the second transformer 3011 and is connected to the grid at the ac bus 10, and when a certain battery energy storage unit 301 is overhauled or abnormal, the battery energy storage unit 301 can be independently withdrawn without affecting the operation of other battery energy storage units 301.
Further, the battery energy storage monitoring unit 302 is connected to the second energy storage converter 3012, and the battery energy storage monitoring unit 302 is configured to monitor operation data of the battery energy storage unit 301 and receive a second control instruction sent by the energy management system 40, and control a power conversion direction and a power conversion magnitude of the second energy storage converter 3012 according to the operation data of the battery energy storage unit 301 and the second control instruction.
In this embodiment, the battery energy storage monitoring unit 302 is in communication connection with the second energy storage converter 3012 in each battery energy storage unit 301, and the battery energy storage monitoring unit 302 monitors the operation data of each battery energy storage unit 301 and receives the second control instruction sent by the energy management system 40, and controls the power conversion direction and the power conversion magnitude of the corresponding second energy storage converter 3012 according to the operation data of each battery energy storage unit 301 and the second control instruction, so as to control the charging and discharging state of each battery energy storage unit 301.
The battery energy storage subsystem 30 adopts an independent battery energy storage monitoring unit 302, independently receives the control of the energy management system 40, independently performs charging and discharging, and improves the safety of the battery energy storage subsystem 30.
The flywheel energy storage subsystem 20 and the battery energy storage subsystem 30 are respectively controlled by the flywheel energy storage monitoring unit 202 and the battery energy storage monitoring unit 302, and are decoupled in control, and the flywheel energy storage monitoring unit 202 and the battery energy storage monitoring unit 302 are respectively controlled by the energy management system 40, so that the flywheel energy storage subsystem 20 and the battery energy storage subsystem 30 are independently charged and discharged, and the safety of the hybrid energy storage system is improved.
Further, the low-voltage side of the second transformer 3011 is configured as a single winding or a split winding, when the low-voltage side of the second transformer 3011 is configured as a single winding, the low-voltage side of the second transformer 3011 is connected to one of the second energy storage converters 3012, and when the low-voltage side of the second transformer 3011 is configured as a split winding, the low-voltage side of the second transformer 3011 is connected to a plurality of the second energy storage converters 3012.
Furthermore, a plurality of battery energy storage assemblies 3013 are provided, and the plurality of battery energy storage assemblies 3013 are connected in parallel to the dc side of the second energy storage converter 3012.
In the first embodiment, in one battery energy storage unit 301, the low-voltage side of the second transformer 3011 is provided as a single winding, the low-voltage side of the second transformer 3011 is connected to one second energy storage converter 3012, and the dc side of the second energy storage converter 3012 is connected to a plurality of battery energy storage components 3013; in the second embodiment, in one battery energy storage unit 301, when the low-voltage side of the second transformer 3011 is configured as a split winding, the low-voltage side of the second transformer 3011 is connected to a plurality of second energy storage converters 3012, and the dc side of the second energy storage converters 3012 is connected to a plurality of battery energy storage assemblies 3013. The battery energy storage subsystem 30 may include a plurality of battery energy storage units 301 described in the first embodiment, may also include a plurality of battery energy storage units 301 described in the second embodiment, and may also include a combination of the battery energy storage units 301 of the first embodiment and the second embodiment.
The combination of the battery energy storage unit 301 that the split number of the split winding that battery energy storage unit 301 set up according to the low pressure side of second transformer 3011 is different and the different combination that forms of quantity of battery energy storage subassembly 3013, each is the same or different in battery energy storage subsystem 30 also is in the protection scope of the utility model discloses an it is here not repeated one by one.
Further, the energy management system 40 is connected to the external control system through an external communication interface.
The embodiment of the utility model discloses an adopt flywheel energy storage subsystem 20 and battery energy storage subsystem 30 to combine, fail safe nature is high, long service life, and power density is high, and charge-discharge response speed is fast, and the temperature range of adaptation is wide, and full life cycle is green pollution-free.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A hybrid energy storage system for thermal power combined AGC frequency modulation is connected with an alternating current bus, and is characterized by comprising:
the flywheel energy storage subsystem comprises a flywheel energy storage monitoring unit and at least one flywheel energy storage unit connected with the flywheel energy storage monitoring unit, and the flywheel energy storage units are connected into the alternating current bus in a parallel connection mode;
the battery energy storage subsystem comprises a battery energy storage monitoring unit and at least one battery energy storage unit connected with the battery energy storage monitoring unit, and the plurality of battery energy storage units are connected to the alternating current bus in a parallel connection mode;
the energy management system is connected with the external control system, the energy management system is respectively connected with the flywheel energy storage monitoring unit and the battery energy storage monitoring unit, the energy management system monitors the running data of the flywheel energy storage subsystem and the running data of the battery energy storage subsystem and receives a first control instruction sent by the external control system, and generates a second control instruction according to the running data of the flywheel energy storage subsystem, the running data of the battery energy storage subsystem and the first control instruction to control the charging and discharging states of the flywheel energy storage subsystem and the battery energy storage subsystem.
2. The hybrid energy storage system of claim 1, wherein each flywheel energy storage unit comprises a first circuit breaker, a first transformer, a first energy storage converter and a flywheel energy storage assembly which are connected in sequence; the high-voltage side of the first transformer is connected to the alternating-current bus through the first breaker, the low-voltage side of the first transformer is connected with the alternating-current side of the first energy storage converter, and the direct-current side of the first energy storage converter is connected with the flywheel energy storage assembly.
3. The hybrid energy storage system of claim 2, wherein the flywheel energy storage monitoring unit is connected to the first energy storage converter, the flywheel energy storage monitoring unit monitors operation data of the flywheel energy storage unit and receives the second control command, and the power conversion direction and the power conversion magnitude of the first energy storage converter are controlled according to the operation data of the flywheel energy storage unit and the second control command.
4. The hybrid energy storage system of claim 2, wherein the low voltage side of the first transformer is configured as a single winding or a split winding, and when the low voltage side of the first transformer is configured as a single winding, the low voltage side of the first transformer is connected to one of the first energy storage converters, and when the low voltage side of the first transformer is configured as a split winding, the low voltage side of the first transformer is connected to a plurality of the first energy storage converters.
5. The hybrid energy storage system of claim 4, wherein a plurality of flywheel energy storage assemblies are provided, and the plurality of flywheel energy storage assemblies are connected in parallel with the DC side of the first energy storage converter.
6. The hybrid energy storage system of claim 1, wherein each of the battery energy storage units comprises a second circuit breaker, a second transformer, a second energy storage converter and a battery energy storage assembly which are connected in sequence; the high-voltage side of the second transformer is connected to the alternating-current bus through the second circuit breaker, the low-voltage side of the second transformer is connected with the alternating-current side of the second energy storage converter, and the direct-current side of the second energy storage converter is connected with the battery energy storage assembly.
7. The hybrid energy storage system of claim 6, wherein the battery energy storage monitoring unit is connected to the second energy storage converter, the battery energy storage monitoring unit monitors operation data of the battery energy storage unit and receives the second control command, and the power conversion direction and the power conversion magnitude of the second energy storage converter are controlled according to the operation data of the battery energy storage unit and the second control command.
8. The hybrid energy storage system of claim 6, wherein the low voltage side of the second transformer is configured as a single winding or a split winding, and when the low voltage side of the second transformer is configured as a single winding, the low voltage side of the second transformer is connected to one of the second energy storage converters, and when the low voltage side of the second transformer is configured as a split winding, the low voltage side of the second transformer is connected to a plurality of the second energy storage converters.
9. The hybrid energy storage system of claim 8, wherein a plurality of battery energy storage assemblies are provided, and the plurality of battery energy storage assemblies are connected in parallel with the dc side of the second energy storage converter.
10. The hybrid energy storage system of claim 1, wherein the energy management system is coupled to the external control system via an external communication interface.
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| CN201921184351.7U CN210297268U (en) | 2019-07-25 | 2019-07-25 | Hybrid energy storage system for thermal power combined AGC frequency modulation |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114421505A (en) * | 2022-03-01 | 2022-04-29 | 华驰动能(北京)科技有限公司 | Control method and device based on flywheel energy storage system and electronic equipment |
| CN115173439A (en) * | 2022-09-08 | 2022-10-11 | 西安热工研究院有限公司 | Controllable energy storage and thermal power combined frequency modulation system and method |
| CN118944129A (en) * | 2024-08-08 | 2024-11-12 | 江苏清飞能源技术有限公司 | A power grid frequency modulation system and method based on flywheel energy storage technology |
-
2019
- 2019-07-25 CN CN201921184351.7U patent/CN210297268U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114421505A (en) * | 2022-03-01 | 2022-04-29 | 华驰动能(北京)科技有限公司 | Control method and device based on flywheel energy storage system and electronic equipment |
| CN115173439A (en) * | 2022-09-08 | 2022-10-11 | 西安热工研究院有限公司 | Controllable energy storage and thermal power combined frequency modulation system and method |
| CN118944129A (en) * | 2024-08-08 | 2024-11-12 | 江苏清飞能源技术有限公司 | A power grid frequency modulation system and method based on flywheel energy storage technology |
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