CN218301019U - Factory energy storage system based on grounding device - Google Patents
Factory energy storage system based on grounding device Download PDFInfo
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- CN218301019U CN218301019U CN202222314585.7U CN202222314585U CN218301019U CN 218301019 U CN218301019 U CN 218301019U CN 202222314585 U CN202222314585 U CN 202222314585U CN 218301019 U CN218301019 U CN 218301019U
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Abstract
The utility model relates to an energy storage system is used in mill based on earthing device, wherein, energy storage system is used in mill includes: the system comprises a station service power system, a grounding device and an energy storage device; the auxiliary power system is respectively connected with the energy storage device and the grounding device; wherein the grounding device comprises: and the first grounding transformer, the second grounding transformer, the third grounding transformer and the fourth grounding transformer are connected with the service power system. The utility model provides a technical scheme increase earthing device in the house service energy storage system, for energy storage system has disposed comparatively reliable ground protection, be convenient for look for the earth fault point and reduce clearance electric arc ground connection overvoltage level simultaneously, and then improved energy storage system's security.
Description
Technical Field
The utility model relates to an electric power system technical field, concretely relates to house service energy storage system based on earthing device.
Background
The energy storage system is connected to the high-voltage station electric system through an energy storage container (directly connected to the station electric system without a booster transformer) or a medium-voltage transformer box (connected to the station electric system after being boosted by a transformer), and the energy storage element has potential safety hazards as the particularity and complexity of elements of the electric system, and has complex and variable performance and influencing factors. The relay protection of the energy storage frequency modulation equipment is configured with a corresponding protection device according to technical regulations of relay protection and safety automatic devices. The energy storage frequency modulation project is from the most basic unit cell to the last gateway accessed by the factory side, and each link requires corresponding safety measures. The energy storage system inserts 6kV generating line section feeder and the allergy configuration comprehensive protection and measurement and control device that steps up, and device protect function should include at least: phase overcurrent protection, zero sequence overcurrent protection, differential protection, negative sequence protection and the like. The configuration of the zero sequence overcurrent protection depends on the neutral point grounding mode of the high-voltage station service system.
The selection of the grounding mode of the neutral point of the high-voltage power plant power system is related to the magnitude of grounding capacitance current, and the grounding mode comprises modes of high-resistance grounding, ungrounded mode, medium-resistance grounding, inductance compensation and the like. The high-voltage station power system adopts a neutral point ungrounded mode, when a single-phase grounding fault occurs, the current flowing through the fault point is smaller capacitance current, meanwhile, the electric arc (non-metallic grounding) at the grounding position is not easy to be automatically eliminated, higher electric arc grounding overvoltage is generated, the multiphase short circuit is easy to develop, and therefore the operation safety of the energy storage system is lower.
Disclosure of Invention
The utility model provides an energy storage system is used in factory based on earthing device to solve the lower technical problem of the operational safety nature of the energy storage system who exists in the correlation technique at least.
The embodiment of the first aspect of the utility model provides an energy storage system is used in mill based on earthing device, include: the system comprises a station service power system, a grounding device and an energy storage device;
the auxiliary power system is respectively connected with the energy storage device and the grounding device;
wherein the grounding device comprises: and the first grounding transformer, the second grounding transformer, the third grounding transformer and the fourth grounding transformer are connected with the service power system.
Preferably, the service power system includes: the system comprises a first main transformer, a first generator, a first high-voltage substation, a first A section bus, a first B section bus, a second main transformer, a second generator, a second high-voltage substation, a second A section bus and a second B section bus;
the first generator is connected with a power transmission bus of a power grid through the first main transformer, and the second generator is connected with the power transmission bus of the power grid through the second main transformer;
the high-voltage side of the first high-voltage station transformer is connected with an outlet of the first generator, and the low-voltage side of the first high-voltage station transformer is respectively connected with the first A section bus and the first B section bus;
the high-voltage side of the second high-voltage substation is connected with the outlet of the second generator, and the low-voltage side of the second high-voltage substation is respectively connected with the second A section bus and the second B section bus.
Preferably, the grounding device further comprises: the first grounding transformer is connected with an outlet switch of the first A section bus, the second grounding transformer is connected with an outlet switch of the first B section bus, the third grounding transformer is connected with an outlet switch of the second A section bus and the fourth grounding transformer is connected with an outlet switch of the second B section bus;
the first grounding transformer is connected with the first A section bus through a wire outlet switch which is connected into the first A section bus through the first grounding transformer;
the second grounding transformer is connected with the first B section bus through a wire outlet switch which is connected into the first B section bus through the second grounding transformer;
the third grounding transformer is connected with a second A section bus through a wire outlet switch of the third grounding transformer access second A section bus;
and the fourth grounding transformer is connected with the second B section bus through a wire outlet switch which is connected into the second B section bus by the fourth grounding transformer.
Further, the energy storage device includes: the energy storage system comprises a first energy storage subsystem, a second energy storage subsystem, a first energy storage subsystem A-section grid-connected switch and a second energy storage subsystem B-section grid-connected switch;
the first energy storage subsystem is respectively connected with the first section A bus and the second section A bus through a section A grid-connected switch of the first energy storage subsystem;
the second energy storage subsystem is respectively connected with the first B section bus and the second B section bus through a B section grid-connected switch of the second energy storage subsystem.
Further, the energy storage device further includes: the first energy storage subsystem is connected to a first section of service incoming line switch, the first energy storage subsystem is connected to a second section of service incoming line switch, the second energy storage subsystem is connected to a first section of service incoming line switch and the second energy storage subsystem is connected to a second section of service incoming line switch;
the first energy storage subsystem is connected to a first section A service incoming line switch and is connected with the first section A bus;
the first energy storage subsystem is connected to a second A-section service incoming line switch of the service power and is connected with a second A-section bus;
the second energy storage subsystem is connected to a first B-section service incoming line switch of service power and is connected with the first B-section bus;
and the second energy storage subsystem is connected to a second B-section service incoming line switch and is connected with the second B-section bus.
Further, the energy storage device further includes: the first energy storage subsystem is accessed to a first section of service power feeder line A, the first energy storage subsystem is accessed to a second section of service power feeder line A, the second energy storage subsystem is accessed to a first section of service power feeder line B, and the second energy storage subsystem is accessed to a second section of service power feeder line B;
the A-section grid-connected switch of the first energy storage subsystem is connected with a first A-section feeder line for accessing the service power of the first energy storage subsystem through a first A-section feeder line for accessing the service power of the first energy storage subsystem;
the A-section grid-connected switch of the first energy storage subsystem is connected with a second A-section feeder line for accessing the service power of the first energy storage subsystem through a second A-section feeder line for accessing the service power of the first energy storage subsystem;
the B-section grid-connected switch of the second energy storage subsystem is connected with the first B-section service incoming switch of the second energy storage subsystem, which is accessed to the service, through the first B-section service feeder of the second energy storage subsystem;
and the second energy storage subsystem B-section grid-connected switch is connected with a second B-section service feeder accessed to service through the second energy storage subsystem and is connected with a second B-section service incoming switch accessed to service through the second energy storage subsystem.
Further, the energy storage device further includes: the first energy storage subsystem A section bus and the second energy storage subsystem B section bus;
the first energy storage subsystem is connected with the A-section grid-connected switch of the first energy storage subsystem through the A-section bus of the first energy storage subsystem;
the second energy storage subsystem is connected with the B-section grid-connected switch of the second energy storage subsystem through the B-section bus of the second energy storage subsystem.
Further, the first energy storage sub-system comprises: the A-section outgoing line interval switches of the first energy storage subsystems and the first energy storage sub-devices are arranged in parallel;
the first energy storage sub-device is connected with a section A bus of the first energy storage subsystem through a section A outgoing line interval switch of the first energy storage subsystem;
the number of the A-section outgoing line interval switches of the first energy storage subsystem is equal to that of the first energy storage sub-devices.
Further, the second energy storage sub-system comprises: a plurality of second energy storage sub-system B section outgoing line interval switches and a plurality of second energy storage sub-devices;
the second energy storage sub-device is connected with a section B bus of the second energy storage subsystem through a section B outgoing line interval switch of the second energy storage subsystem;
and the number of the outgoing line interval switches of the section B of the second energy storage subsystem is equal to that of the second energy storage sub-devices.
Preferably, the auxiliary power system further comprises: the first A section outgoing line interval switch, the first B section outgoing line interval switch, the second A section outgoing line interval switch and the second B section outgoing line interval switch;
the first A section outgoing line interval switch is connected with the first A section bus, the first B section outgoing line interval switch is connected with the first B section bus, the second A section outgoing line interval switch is connected with the second A section bus, and the second B section outgoing line interval switch is connected with the second B section bus.
The embodiment of the utility model provides a technical scheme brings following beneficial effect at least:
the utility model provides a pair of house service energy storage system based on earthing device, wherein, the system includes: the system comprises a station service power system, a grounding device and an energy storage device; the auxiliary power system is respectively connected with the energy storage device and the grounding device; wherein the grounding device comprises: and the first grounding transformer, the second grounding transformer, the third grounding transformer and the fourth grounding transformer are connected with the service power system. The technical scheme provided by the utility model increase earthing device in the house service energy storage system, for energy storage system has configured comparatively reliable ground protection, be convenient for look for earth fault point and reduce clearance nature electric arc ground connection overvoltage level simultaneously, and then improved energy storage system's security.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the present invention will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a block diagram of a grounding device based auxiliary energy storage system according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a plant electrical system connected to a power grid according to an embodiment of the present invention;
fig. 3 is a schematic view of a grounding device provided in accordance with an embodiment of the present invention;
fig. 4 is a schematic diagram of an energy storage device provided in accordance with an embodiment of the present invention;
fig. 5 is a schematic diagram of a plant energy storage system connected to a power grid according to an embodiment of the present invention;
reference numerals:
the power plant power system comprises a plant power system 1, a grounding device 2, an energy storage device 3, a power grid transmission bus 4, a first main transformer 1-1, a first generator 1-2, a first high-voltage plant transformer 1-3, a first A section bus 1-4, a first B section bus 1-5, a second main transformer 1-6, a second generator 1-7, a second high-voltage plant transformer 1-8, a second A section bus 1-9, a second B section bus 1-10, a first A section outgoing line interval switch 1-11, a first B section outgoing line interval switch 1-12, a second A section outgoing line interval switch 1-13, a second B section outgoing line interval switch 1-14, a first grounding transformer 2-1, a second grounding transformer 2-2, a third grounding transformer 2-3, a fourth grounding transformer 2-4, a first grounding transformer accessed first A section outgoing line switch 2-5, a first A section bus an outgoing line switch 2-6 of a second grounding transformer connected to a first B section bus, an outgoing line switch 2-7 of a third grounding transformer connected to a second A section bus, an outgoing line switch 2-8 of a fourth grounding transformer connected to a second B section bus, a first energy storage subsystem 3-1, a second energy storage subsystem 3-2, a first energy storage subsystem A section grid-connected switch 3-3, a second energy storage subsystem B section grid-connected switch 3-4, a first energy storage subsystem connected to a first A section incoming line switch 3-5 for service, a first energy storage subsystem connected to a second A section incoming line switch 3-6 for service, a second energy storage subsystem connected to a first B section incoming line switch 3-7 for service, a second energy storage subsystem connected to a second B section incoming line switch 3-8 for service, a first energy storage subsystem connected to a second B section incoming line switch for service, the first energy storage subsystem is connected with a first section A feeder line 3-9 of service power, the first energy storage subsystem is connected with a second section A feeder line 3-10 of service power, the second energy storage subsystem is connected with a first section B feeder line 3-11 of service power, the second energy storage subsystem is connected with a second section B feeder line 3-12 of service power, a section A bus 3-13 of the first energy storage subsystem, a section B bus 3-14 of the second energy storage subsystem, a section A outgoing line interval switch 3-1-1 of the first energy storage subsystem, a first energy storage sub device 3-1-2, a section B outgoing line interval switch 3-2-1 of the second energy storage subsystem and a second energy storage sub device 3-2-2.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
The utility model provides a house service energy storage system based on earthing device, wherein, the system includes: the system comprises a station service power system, a grounding device and an energy storage device; the auxiliary power system is respectively connected with the energy storage device and the grounding device; wherein the grounding device comprises: and the first grounding transformer, the second grounding transformer, the third grounding transformer and the fourth grounding transformer are connected with the service power system. The technical scheme provided by the utility model increase earthing device in the house service energy storage system, for energy storage system has configured comparatively reliable ground protection, be convenient for look for earth fault point and reduce clearance nature electric arc ground connection overvoltage level simultaneously, and then improved energy storage system's security.
The utility model discloses a house service energy storage system based on earthing device of embodiment is described below with reference to the attached drawing.
Example 1
Fig. 1 is a structural diagram of a service energy storage system based on a grounding device according to an embodiment of the present disclosure, as shown in fig. 1, including: the system comprises a station service power system 1, a grounding device 2 and an energy storage device 3;
the station service power system 1 is respectively connected with the energy storage device 3 and the grounding device 2;
wherein the grounding device 2 comprises: and the first grounding transformer 2-1, the second grounding transformer 2-2, the third grounding transformer 2-3 and the fourth grounding transformer 2-4 are connected with the service power system.
In the embodiment of the present disclosure, as shown in fig. 2, the plant power system 1 includes: the system comprises a first main transformer 1-1, a first generator 1-2, a first high-voltage substation 1-3, a first A section bus 1-4, a first B section bus 1-5, a second main transformer 1-6, a second generator 1-7, a second high-voltage substation 1-8, a second A section bus 1-9 and a second B section bus 1-10;
the first generator 1-2 is connected with a power grid transmission bus 4 through the first main transformer 1-1 and further connected to a power grid, and the second generator 1-7 is connected with the power grid transmission bus 4 through the second main transformer 1-6;
the high-voltage side of the first high-voltage substation 1-3 is connected with the outlet of the first generator 1-2, and the low-voltage side of the first high-voltage substation 1-3 is respectively connected with the first A section bus 1-4 and the first B section bus 1-5;
the high-voltage side of the second high-voltage power transformer 1-8 is connected with the outlet of the second generator 1-7, and the low-voltage side of the second high-voltage power transformer 1-8 is respectively connected with the second A section bus 1-9 and the second B section bus 1-10.
In the embodiment of the present disclosure, as shown in fig. 2, the plant power system 1 further includes: the first A section outgoing line interval switch 1-11, the first B section outgoing line interval switch 1-12, the second A section outgoing line interval switch 1-13 and the second B section outgoing line interval switch 1-14;
the first A section outgoing line interval switch 1-11 is connected with the first A section bus bar 1-4, the first B section outgoing line interval switch 1-12 is connected with the first B section bus bar 1-5, the second A section outgoing line interval switch 1-13 is connected with the second A section bus bar 1-9, and the second B section outgoing line interval switch 1-14 is connected with the second B section bus bar 1-10.
The first A section outgoing line interval switch 1-11, the first B section outgoing line interval switch 1-12, the second A section outgoing line interval switch 1-13 and the second B section outgoing line interval switch 1-14 are all used for connecting the first A section bus 1-4, the first B section bus 1-5, the second A section bus 1-9 and the second B section bus 1-10 with other loads except the energy storage device 3.
In the practice of the present disclosure, as shown in fig. 3, the grounding device 2 further includes: the first grounding transformer is connected with an outlet switch 2-5 of the first A section bus, the second grounding transformer is connected with an outlet switch 2-6 of the first B section bus, the third grounding transformer is connected with an outlet switch 2-7 of the second A section bus, and the fourth grounding transformer is connected with an outlet switch 2-8 of the second B section bus;
the first grounding transformer 2-1 is connected with the first A section bus 1-4 through an outlet switch 2-5 which is connected into the first A section bus through the first grounding transformer;
the second grounding transformer 2-2 is connected with the first B section bus 1-5 through an outgoing switch 2-6 which is connected into the first B section bus through the second grounding transformer;
the third grounding transformer 2-3 is connected with the second A section bus 1-9 through an outlet switch 2-7 which is connected with the second A section bus through the third grounding transformer;
and the fourth grounding transformer 2-4 is connected with the second B section bus 1-10 through an outgoing switch 2-8 which is connected into the second B section bus by the fourth grounding transformer.
In the practice of the present disclosure, as shown in fig. 4, the energy storage device 3 includes: the energy storage system comprises a first energy storage subsystem 3-1, a second energy storage subsystem 3-2, a first energy storage subsystem A section grid-connected switch 3-3 and a second energy storage subsystem B section grid-connected switch 3-4;
the first energy storage subsystem 3-1 is respectively connected with the first A section bus 1-4 and the second A section bus 1-9 through the A section grid-connected switch 3-3 of the first energy storage subsystem;
the second energy storage subsystem 3-2 is respectively connected with the first B section bus 1-5 and the second B section bus 1-10 through a second energy storage subsystem B section grid-connected switch 3-4.
Further, as shown in fig. 4, the energy storage device 3 further includes: the first energy storage subsystem is connected to a first section A service incoming line switch 3-5, the first energy storage subsystem is connected to a second section A service incoming line switch 3-6, the second energy storage subsystem is connected to a first section B service incoming line switch 3-7 and the second energy storage subsystem is connected to a second section B service incoming line switch 3-8;
the first energy storage subsystem is connected to a first section A service incoming line switch 3-5 and connected with a first section A bus 1-4;
the first energy storage subsystem is connected to a second A-section service incoming line switch 3-6 of the service power and is connected with a second A-section bus 1-9;
the second energy storage subsystem is connected to a first B section incoming line switch 3-7 for service power and is connected with the first B section bus 1-5;
and the second energy storage subsystem is connected to a second B-section service incoming line switch 3-8 of service power and is connected with a second B-section bus 1-10.
Further, as shown in fig. 4, the energy storage device 3 further includes: the first energy storage subsystem is accessed to a first section of service power feeder line 3-9, the first energy storage subsystem is accessed to a second section of service power feeder line 3-10, the second energy storage subsystem is accessed to a first section of service power feeder line 3-11, and the second energy storage subsystem is accessed to a second section of service power feeder line 3-12;
the first energy storage subsystem A section grid-connected switch 3-3 is connected with a first energy storage subsystem access service first A section incoming line switch 3-5 through a first energy storage subsystem access service first A section feeder line 3-9;
the A-section grid-connected switch 3-3 of the first energy storage subsystem is connected with a second A-section service power incoming switch 3-6 of the first energy storage subsystem through a second A-section service power feeder 3-10 of the first energy storage subsystem;
the second energy storage subsystem B section grid-connected switch 3-4 is connected with the second energy storage subsystem first B section service incoming switch 3-7 through the second energy storage subsystem first B section service incoming feeder 3-11;
and the second energy storage subsystem B section grid-connected switch 3-4 is connected with the second energy storage subsystem B section service power incoming switch 3-8 through the second energy storage subsystem access service power second B section feeder line 3-12.
Further, as shown in fig. 4, the energy storage device 3 further includes: the section A of the first energy storage subsystem is provided with 3-13 buses and the section B of the second energy storage subsystem is provided with 3-14 buses;
the first energy storage subsystem 3-1 is connected with the first energy storage subsystem A section grid-connected switch 3-3 through the first energy storage subsystem A section bus 3-13;
the second energy storage subsystem 3-2 is connected with the B section grid-connected switch 3-4 of the second energy storage subsystem through a B section bus 3-14 of the second energy storage subsystem.
In the embodiment of the present disclosure, as shown in fig. 4, the first energy storage subsystem 3-1 includes: a plurality of first energy storage sub-system A section outgoing line interval switches 3-1-1 and a plurality of first energy storage sub-devices 3-1-2;
the first energy storage sub-device 3-1-2 is connected with a section A bus 3-13 of the first energy storage subsystem through a section A outgoing line interval switch 3-1-1 of the first energy storage subsystem;
the number of the A-section outgoing line interval switches 3-1-1 of the first energy storage subsystem is equal to that of the first energy storage sub-devices 3-1-2.
In the embodiment of the present disclosure, as shown in fig. 4, the second energy storage subsystem 3-2 includes: a plurality of second energy storage sub-system B section outgoing line interval switches 3-2-1 and a plurality of second energy storage sub-devices 3-2-2;
the second energy storage sub-device 3-2-2 is connected with a section B bus 3-14 of the second energy storage subsystem through a section B outgoing line interval switch 3-2-1 of the second energy storage subsystem;
and the number of the B-section outgoing line interval switches 3-2-1 of the second energy storage subsystem is equal to that of the second energy storage sub-devices 3-2-2.
For example, as shown in fig. 5, the schematic diagram of the connection between the plant energy storage system and the power grid provided by the present invention is shown, when the plant energy storage system 1 is accessed to the power grid for participating in AGC frequency modulation of the power grid, the first energy storage subsystem 3-1 and the second energy storage subsystem 3-2 are accessed to the plant energy system 1, that is, each of the first energy storage subsystems 3-1-2 is connected to the first energy storage subsystem a section bus 3-13 through each of the first energy storage subsystem a section outgoing line interval switches 3-1-1, the first energy storage subsystem A section bus 3-13 is respectively connected with a first energy storage subsystem access service first A section feeder line 3-9 and a first energy storage subsystem access service second A section feeder line 3-10 through a first energy storage subsystem A section grid-connected switch 3-3, then the first energy storage subsystem access service first A section feeder line 3-9 and the first energy storage subsystem access service first A section incoming line switch 3-5 are connected with a first A section bus 1-4 of the service power system 1, and meanwhile the first energy storage subsystem access service second A section feeder line 3-10 and the first energy storage subsystem access service second A section incoming line switch 3-6 are connected with a second A section bus 1-9 of the service power system 1; each second energy storage sub device 3-2-2 is connected with a B-section bus 3-14 of each second energy storage sub system through a B-section outgoing line interval switch 3-2-1 of each second energy storage sub system, the B-section bus 3-14 of each second energy storage sub system is respectively connected with a first B-section feeder 3-11 accessed to the service by the second energy storage sub system and a second B-section feeder 3-12 accessed to the service by the second energy storage sub system through a B-section grid-connected switch 3-4 of each second energy storage sub system, then the first B-section feeder 3-11 accessed to the service by the second energy storage sub system is connected with a first B-section incoming line switch 3-7 accessed to the service by the second energy storage sub system and is connected with a first B-section bus 1-5 of the service electrical system 1, and meanwhile, the second B-section feeder 3-12 accessed to the service by the second energy storage sub system is connected with a second B-section incoming line switch 3-8 accessed to the second B-section bus 1-10 of the service electrical system 1; meanwhile, the first grounding transformer 2-1 is connected to the ground through a wire outlet switch 2-5 of a first A section bus through a first grounding transformer, the second grounding transformer 2-2 is connected to the ground through a wire outlet switch 2-6 of a second B section bus through a second grounding transformer, the third grounding transformer 2-3 is connected to the ground through a wire outlet switch 2-7 of a second A section bus through a third grounding transformer, and the fourth grounding transformer 2-4 is connected to the ground through a wire outlet switch 2-8 of a second B section bus through a fourth grounding transformer.
To sum up, the utility model provides a pair of energy storage system is used in factory based on earthing device increase earthing device in the energy storage system is used in factory, can obtain following effect: 1. the utility model has clear system structure and simple wiring, and can realize that the energy storage system is connected with the high-voltage station power system with ungrounded neutral point through simple wiring and simultaneously is connected with the neutral point grounding device in the high-voltage station power system; 2. the utility model discloses when can making energy storage system access high-pressure station service electric system that the neutral point is ungrounded, through newly adding earthing device, make energy storage system dispose comparatively reliable ground protection, be convenient for look for the earth fault point and reduce clearance electric arc ground connection overvoltage level simultaneously, fully improve energy storage system's security; 3. the utility model discloses a when energy storage system inserts the ungrounded high pressure station service electric system of neutral point, newly increase earthing device, make former high pressure station service electric system become the small resistance earthing system by ungrounded system, be favorable to other spaced earth protection configurations of high pressure station service electric system, improve high pressure station service electric system security.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing steps of a custom logic function or process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present invention.
While embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations of the above embodiments may be made by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (10)
1. An energy storage system is used in mill based on earthing device, its characterized in that includes: the system comprises a station service power system, a grounding device and an energy storage device;
the auxiliary power system is respectively connected with the energy storage device and the grounding device;
wherein, the earthing device includes: and the first grounding transformer, the second grounding transformer, the third grounding transformer and the fourth grounding transformer are connected with the service power system.
2. The energy storage system of claim 1, wherein the plant system comprises: the system comprises a first main transformer, a first generator, a first high-rise transformer, a first A section bus, a first B section bus, a second main transformer, a second generator, a second high-rise transformer, a second A section bus and a second B section bus;
the first generator is connected with a power grid transmission bus through the first main transformer, and the second generator is connected with the power grid transmission bus through the second main transformer;
the high-voltage side of the first high-voltage substation is connected with an outlet of the first generator, and the low-voltage side of the first high-voltage substation is respectively connected with the first A section bus and the first B section bus;
the high-voltage side of the second high-voltage substation is connected with the outlet of the second generator, and the low-voltage side of the second high-voltage substation is respectively connected with the second A section bus and the second B section bus.
3. The factory energy storage system according to claim 2, wherein said grounding means further comprises: the first grounding transformer is connected with an outlet switch of the first A section bus, the second grounding transformer is connected with an outlet switch of the first B section bus, the third grounding transformer is connected with an outlet switch of the second A section bus and the fourth grounding transformer is connected with an outlet switch of the second B section bus;
the first grounding transformer is connected with the first A section bus through a wire outlet switch which is connected into the first A section bus through the first grounding transformer;
the second grounding transformer is connected with the first B section bus through a wire outlet switch which is connected into the first B section bus by the second grounding transformer;
the third grounding transformer is connected with a second A section bus through a wire outlet switch of the third grounding transformer access second A section bus;
and the fourth grounding transformer is connected with the second B section bus through a wire outlet switch which is connected into the second B section bus through the fourth grounding transformer.
4. The factory energy storage system according to claim 3, wherein said energy storage device comprises: the energy storage system comprises a first energy storage subsystem, a second energy storage subsystem, a first energy storage subsystem A section grid-connected switch and a second energy storage subsystem B section grid-connected switch;
the first energy storage subsystem is respectively connected with the first section A bus and the second section A bus through a section A grid-connected switch of the first energy storage subsystem;
the second energy storage subsystem is respectively connected with the first B section bus and the second B section bus through a B section grid-connected switch of the second energy storage subsystem.
5. The factory energy storage system of claim 4, wherein said energy storage device further comprises: the first energy storage subsystem is connected to a first section of service incoming line switch, the first energy storage subsystem is connected to a second section of service incoming line switch, the second energy storage subsystem is connected to a first section of service incoming line switch and the second energy storage subsystem is connected to a second section of service incoming line switch;
the first energy storage subsystem is connected to a first section A service incoming line switch and is connected with the first section A bus;
the first energy storage subsystem is connected to a second A-section service incoming line switch of the service power and is connected with a second A-section bus;
the second energy storage subsystem is connected to a first B-section service incoming line switch of service power and is connected with the first B-section bus;
and the second energy storage subsystem is connected to a second B-section service incoming line switch and is connected with the second B-section bus.
6. The factory energy storage system of claim 5, wherein said energy storage device further comprises: the first energy storage subsystem is accessed to a first section of service power feeder line A, the first energy storage subsystem is accessed to a second section of service power feeder line A, the second energy storage subsystem is accessed to a first section of service power feeder line B, and the second energy storage subsystem is accessed to a second section of service power feeder line B;
the first energy storage subsystem A-section grid-connected switch is connected with a first energy storage subsystem access service first A-section feeder line through the first energy storage subsystem access service first A-section feeder line and is connected with a first energy storage subsystem access service first A-section incoming line switch;
the A-section grid-connected switch of the first energy storage subsystem is connected with a second A-section feeder line for service access of the first energy storage subsystem through a second A-section feeder line for service access of the first energy storage subsystem;
the B-section grid-connected switch of the second energy storage subsystem is connected with the first B-section service incoming switch of the second energy storage subsystem, which is accessed to the service, through the first B-section service feeder of the second energy storage subsystem;
and the B-section grid-connected switch of the second energy storage subsystem is connected with the second B-section service incoming switch of the second energy storage subsystem, which is accessed to the service, through the second B-section service feeder of the second energy storage subsystem.
7. The factory energy storage system of claim 4, wherein said energy storage device further comprises: the bus comprises a first energy storage subsystem A section bus and a second energy storage subsystem B section bus;
the first energy storage subsystem is connected with the A-section grid-connected switch of the first energy storage subsystem through the A-section bus of the first energy storage subsystem;
the second energy storage subsystem is connected with the B-section grid-connected switch of the second energy storage subsystem through the B-section bus of the second energy storage subsystem.
8. The factory energy storage system of claim 7, wherein said first energy storage subsystem comprises: the A-section outgoing line interval switches of the first energy storage subsystems and the first energy storage sub-devices are arranged in parallel;
the first energy storage sub-device is connected with a section A bus of the first energy storage subsystem through a section A outgoing line interval switch of the first energy storage subsystem;
the number of the A-section outgoing line interval switches of the first energy storage subsystem is equal to that of the first energy storage sub-devices.
9. The factory energy storage system of claim 7, wherein the second energy storage subsystem comprises: a plurality of second energy storage subsystem B section outgoing line interval switches and a plurality of second energy storage sub-devices;
the second energy storage sub-device is connected with a B section bus of the second energy storage subsystem through a B section outgoing line interval switch of the second energy storage subsystem;
and the number of the B-section outgoing line interval switches of the second energy storage subsystem is equal to that of the second energy storage sub-devices.
10. The energy storage system for a plant of claim 2, wherein the plant system further comprises: the first A section outgoing line interval switch, the first B section outgoing line interval switch, the second A section outgoing line interval switch and the second B section outgoing line interval switch;
the first section A outgoing line interval switch is connected with the first section A bus, the first section B outgoing line interval switch is connected with the first section B bus, the second section A outgoing line interval switch is connected with the second section A bus, and the second section B outgoing line interval switch is connected with the second section B bus.
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| CN202222314585.7U CN218301019U (en) | 2022-08-31 | 2022-08-31 | Factory energy storage system based on grounding device |
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| CN202222314585.7U CN218301019U (en) | 2022-08-31 | 2022-08-31 | Factory energy storage system based on grounding device |
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