CN115663782A - Power supply system of power plant - Google Patents
Power supply system of power plant Download PDFInfo
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- CN115663782A CN115663782A CN202211267717.3A CN202211267717A CN115663782A CN 115663782 A CN115663782 A CN 115663782A CN 202211267717 A CN202211267717 A CN 202211267717A CN 115663782 A CN115663782 A CN 115663782A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
Abstract
The embodiment of the invention provides a power supply system of a power plant, and belongs to the technical field of power supply in the power plant. The power supply system of power plant includes DC power supply system, AC distribution system, integrated transverter and photovoltaic power generation system, photovoltaic power generation system with the input of integrated transverter is connected, the direct current output of integrated transverter is connected DC power supply system, the AC output of integrated transverter is connected AC distribution system. The photovoltaic power generation system is added on the basis of the existing direct current power supply system, the high-voltage direct current output by the photovoltaic power generation system is converted into the low-voltage direct current to supply power to the direct current power supply system through the integrated converter, and the low-voltage direct current is converted into the low-voltage alternating current to supply power to the alternating current power distribution system, so that the synergistic effect of the traditional energy and the clean energy is realized.
Description
Technical Field
The invention relates to the technical field of power supply in a power plant, in particular to a power supply system of the power plant.
Background
The direct current system is widely applied to hydraulic power plants, thermal power plants and various transformer substations, mainly comprises a storage battery, a charging device, a direct current feeder screen, a direct current power distribution cabinet, a direct current power supply monitoring device, a direct current branch feeder and the like, and mainly provides a safe and reliable working power supply for each subsystem of a relay protection device, a breaker tripping and closing device, a signal system, a direct current charger, a UPS, communication, emergency lighting and the like in the power plant.
The invention provides a power supply system of a power plant, which is characterized in that a photovoltaic power generation system is added on the basis of the existing direct current power supply system to realize the synergistic effect of traditional energy and clean energy.
Disclosure of Invention
The embodiment of the invention aims to provide a power plant power supply system which can supply power by adopting traditional energy and can supply power by utilizing a photovoltaic power generation system, so that the synergistic effect of the traditional energy and clean energy is realized.
In order to achieve the above object, an embodiment of the present invention provides a power supply system for a power plant, which includes a dc power system, an ac power distribution system, an integrated converter, and a photovoltaic power generation system, wherein the photovoltaic power generation system is connected to the integrated converter, a dc output terminal of the integrated converter is connected to the dc power system, and an ac output terminal of the integrated converter is connected to the ac power distribution system.
Preferably, the integrated converter includes an integrated converter DC bus, a DC-DC converter module, and a DC-AC inverter module, an input end of the integrated converter DC bus is connected to the photovoltaic power generation system, an output end of the integrated converter DC bus is respectively connected to an input end of the DC-DC converter module and an input end of the DC-AC inverter, an output end of the DC-DC converter module is connected to the DC bus of the DC power supply system, and an output end of the DC-AC inverter module is connected to the AC bus of the AC power distribution system.
Preferably, the integrated converter further comprises a component detection module, an input end of the component detection module is connected with the photovoltaic power generation system, and the component detection module is used for monitoring an insulation impedance function of an access loop of the integrated converter and detecting a polarity reversal function of the integrated converter.
Preferably, the integrated converter further includes an input dc EMI filter, an input end of the input dc EMI filter is connected to the photovoltaic power generation system, and an output end of the input dc EMI filter is connected to the integrated converter dc bus.
Preferably, the integrated converter further includes an MPPT circuit, and the MPPT circuit is connected in series between the input dc EMI filter and the integrated converter dc bus.
Preferably, the integrated converter further includes a dc input switch module, an input end of the dc input switch module is connected to an output end of the photovoltaic power generation system, and an output end of the dc input switch module is connected to the input dc EMI filter.
Preferably, the integrated converter further includes an output DC filter module and an output AC filter module, an input end of the output DC filter module is connected to an output end of the DC-DC converter module, an output end of the output DC filter module is connected to a DC bus of the DC power supply system, an input end of the output AC filter module is connected to an output end of the DC-AC inverter module, and an output end of the output AC filter module is connected to an AC bus of the AC power distribution system.
Preferably, the dc power supply system includes a storage battery pack, a first dc bus, a second dc bus, a first charging device, and a second charging device, the first charging device is connected to the first dc bus, the second charging device is connected to the second dc bus, the storage battery pack is connected to the first dc bus and the second dc bus respectively, an interconnection switch is connected between the first dc bus and the second dc bus, and a dc output terminal of the integrated converter is connected to the first dc bus or the second dc bus.
Preferably, the alternating current power distribution system comprises an alternating current grid-connected box, and an alternating current output end of the integrated converter is connected with an alternating current bus of the alternating current grid-connected box.
Preferably, the photovoltaic power generation system comprises a photovoltaic array, a direct current bus module and a lightning protection grounding module, and the photovoltaic array is connected with the integrated converter through the direct current bus module.
The photovoltaic power generation system is added on the basis of the existing direct current power supply system, the high-voltage direct current output by the photovoltaic power generation system is converted into the low-voltage direct current to supply power to the direct current power supply system through the integrated converter, and the high-voltage direct current is converted into the low-voltage alternating current to supply power to the alternating current power distribution system, so that the synergistic effect of the traditional energy and the clean energy is realized.
Additional features and advantages of embodiments of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the embodiments of the invention without limiting the embodiments of the invention. In the drawings:
FIG. 1 is a schematic circuit diagram of a power plant power supply system provided by an embodiment of the present invention;
fig. 2 is a schematic circuit diagram of an integrated converter according to an embodiment of the present invention.
Description of the reference numerals
1-integrated converter, 2-photovoltaic power generation system, 3-storage battery set, 4-first direct current bus, 5-second direct current bus, 6-second charging device, 7-interconnection switch, 8-alternating current bus, 9-photovoltaic module, 10-component detection module, 11-direct current input switch module, 13-input direct current EMI filter, 14-MPPT circuit, 15-integrated converter direct current bus, 16-DC-DC conversion module, 17-direct current filter, 18-direct current relay, 19-output direct current EMI filter, 20-DC-AC inversion module, 21-alternating current filter, 22-alternating current relay, 23-output alternating current EMI filter, 24-first direct current lightning arrester, 25-second direct current lightning arrester and 26-alternating current lightning arrester.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating embodiments of the invention, are given by way of illustration and explanation only, not limitation.
In the embodiments of the present invention, unless otherwise specified, the use of the directional terms such as "upper, lower, left, and right" generally refer to the directions or positional relationships shown in the drawings, or the directions or positional relationships that the products of the present invention are usually placed when in use. The terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
The terms "parallel", "perpendicular", etc. do not require that the components be absolutely parallel or perpendicular, but may be slightly inclined. For example, "parallel" merely means that the directions are more parallel relative to "perpendicular," and does not mean that the structures are necessarily perfectly parallel, but may be slightly tilted.
The terms "horizontal", "vertical", "overhanging", and the like do not imply a requirement that the components be absolutely horizontal, vertical or overhanging, but may be somewhat inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
Furthermore, the terms "substantially", "essentially", and the like are intended to indicate that the relative terms are not required to be absolutely exact, but may have some deviation. For example: "substantially equal" does not mean absolute equality, but it is difficult to achieve absolute equality in actual production and operation, and certain deviations generally exist. Thus, in addition to absolute equality, "substantially equal" also includes the above-described case where there is some deviation. In this case, unless otherwise specified, terms such as "substantially", and the like are used in a similar manner to those described above.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
"connected" as used herein is intended to mean an electrical power connection or a signal connection between two components; "coupled" may be a direct connection between two elements, an indirect connection between two elements through an intermediary (e.g., a wire), or an indirect connection between three elements.
"signal connection" as used herein is intended to mean a signal connection between two components, such as a control signal and a feedback signal; the term "electrical connection" is used to describe an electrical power connection between two components; "connected" may be a direct connection between two elements or an indirect connection through a third element.
Example 1
Referring to fig. 1-2, the present embodiment provides a power supply system for a power plant, including a dc power system, an ac power distribution system, an integrated converter 1, and a photovoltaic power generation system 2, where the photovoltaic power generation system 2 is connected to the integrated converter 1, a dc output terminal of the integrated converter 1 is connected to the dc power system, and an ac output terminal of the integrated converter 1 is connected to the ac power distribution system.
Specifically, the integrated converter 1 converts the direct current power supply of the photovoltaic power generation system 2 and then inputs the converted direct current power supply into the direct current power supply system, the integrated converter 1 inverts the direct current power supply of the photovoltaic power generation system 2 and then inputs the inverted direct current power supply into the alternating current power distribution system, and the photovoltaic power generation system 2 assists the direct current power supply system to supply power, so that the use of traditional energy is reduced. The photovoltaic power generation system 2 is incorporated into an alternating current power distribution system to assist the alternating current power distribution system to supply power for alternating current loads in a power plant, and the use of traditional energy sources is further reduced.
In this embodiment, the integrated converter 1 includes an integrated converter DC bus 15, a DC-DC converter module 16 and a DC-AC inverter module 20, an input end of the integrated converter DC bus 15 is connected to the photovoltaic power generation system 2, an output end of the integrated converter DC bus 15 is respectively connected to an input end of the DC-DC converter module 16 and an input end of a DC-AC inverter, an output end of the DC-DC converter module 16 is connected to a DC bus of the DC power supply system, and an output end of the DC-AC inverter module 20 is connected to an AC bus 8 of the AC power distribution system.
Specifically, the DC-DC converter module 16 converts the high voltage DC output by the photovoltaic power generation system 2 into a low voltage DC of the DC power supply system; and the DC-AV inversion module inverts the high-voltage direct current output by the photovoltaic power generation system 2 into the rated grid voltage of the alternating current distribution network.
Further, the DC-DC converter module 16 adopts an integrated DC-DC converter, has a high-power Buck chopper circuit and a full-bridge phase-shift soft switch, and adopts a Pulse Width Modulation (PWM) working mode, a parallel current-sharing capacity-expansion and a modular design.
The DC-AC inversion module 20 adopts an integrated DC-AC inverter, uses a two-level three-phase half-bridge topology structure, selects a medium-low power IGBT module, controls the IGBT to emit three-level square waves through a DSP chip, and outputs sine waves meeting the standard after filtering through an LCL or LC filter.
In this embodiment, the integrated current converter 1 further includes a component detection module 10, an input end of the component detection module 10 is connected to the photovoltaic power generation system 2, and the component detection module 10 is configured to monitor an insulation resistance function of an access loop of the integrated current converter 1 and detect a polarity reversal function of the integrated current converter 1.
Specifically, the component detection module 10 includes an insulation resistance monitoring unit and a polarity reversal detection unit;
the insulation impedance monitoring unit is used for monitoring the insulation impedance function of each access loop of the integrated converter 1; when the live part of the integrated converter 1 is grounded, the insulation resistance monitoring unit should be able to immediately monitor the fault state of the integrated converter 1, perform alarm and shutdown actions. The integrated current converter 1 respectively calculates the resistances of PV + and PV-to-ground by detecting the voltages of PV + to ground and PV-to-ground, if the resistance value of any side is lower than a threshold value, the integrated current converter 1 stops working, and an alarm is given to display that the PV insulation resistance is low.
The polarity reverse connection detection unit adopts reverse connection protection of an enhanced MOS tube.
In this embodiment, the integrated converter 1 further includes an input dc EMI filter 13, an input of the input dc EMI filter 13 is connected to the photovoltaic power generation system 2, and an output of the input dc EMI filter 13 is connected to the integrated converter dc bus 15.
The input direct current EMI filter 13 is used for filtering out electromagnetic interference inside the integrated converter 1, and ensures that the integrated converter 1 can meet the requirements of electromagnetic compatibility standards.
In this embodiment, the integrated inverter 1 further includes an MPPT circuit 14, and the MPPT circuit 14 is connected in series between the input dc EMI filter 13 and the integrated inverter dc bus 15. The MPPT circuit 14 ensures that the integrated converter 1 obtains maximum input power under different photovoltaic input conditions.
In this embodiment, the integrated converter 1 further includes a dc input switch module 11, an input end of the dc input switch module 11 is connected to an output end of the photovoltaic power generation system 2, and an output end of the dc input switch module 11 is connected to the input dc EMI filter 13.
Specifically, the dc input switch module 11 is configured to control input of the photovoltaic power generation system 2, in this embodiment, the dc input switch module 11 includes a plurality of dc switches, and the number of the dc switches corresponds to the number of the photovoltaic groups connected in parallel in the photovoltaic power generation system 2.
Further, the integrated converter 1 further includes a DC output switch module and an AC output switch module, the DC output switch module is used for controlling the DC output of the DC-DC converter module 16, and the AC output switch module is used for controlling the AC output of the DC-AC inverter module 20.
The dc output switch module may employ a dc relay 18 and the ac output switch module may employ an ac relay 22.
In this embodiment, the integrated converter 1 further includes an output DC filter module and an output AC filter module, an input end of the output DC filter module is connected to an output end of the DC-DC converter module 16, an output end of the output DC filter module is connected to a DC bus of the DC power supply system, an input end of the output AC filter module is connected to an output end of the DC-AC inverter module 20, and an output end of the output AC filter module is connected to an AC bus 8 of the AC power distribution system.
Specifically, the output direct current filtering module includes a direct current filter 17 and an output direct current EMI filter 19, the direct current filter 17 performs primary filtering on the direct current output by the DC-DC converter module 16, and suppresses harmonics output by the DC-DC converter, so that the low-voltage direct current obtained by current conversion is more stable; the output dc EMI filter 19 performs secondary filtering on the low voltage dc output from the dc filter 17 to eliminate electromagnetic interference.
Similarly, the output AC filtering module includes an AC filter 21 and an output AC EMI filter 23, the AC filter 21 performs primary filtering on the AC output by the DC-AC inverter module 20 to filter the harmonic output by the DC-AC inverter, and the output AC EMI filter 23 performs secondary filtering on the low-voltage AC output by the AC filter 21 to eliminate electromagnetic interference.
In this embodiment, the dc power supply system includes a battery pack 3, a first dc bus 4, a second dc bus 5, a first charging device, and a second charging device 6, the first charging device is connected to the first dc bus 4, the second charging device 6 is connected to the second dc bus 5, the battery pack 3 is connected to the first dc bus 4 and the second dc bus 5, a tie switch 7 is connected between the first dc bus 4 and the second dc bus 5, and a dc output terminal of the integrated inverter 1 is connected to the first dc bus 4 or the second dc bus 5.
When the direct current power supply system normally operates, the interconnection switch 7 is turned off.
The battery pack 3 is not provided with end cells, and each group consists of 104 cells. The direct-current power supply system operates in a floating charging mode under normal conditions, and equalizing charging is carried out after accident discharging.
Furthermore, the direct current power supply system is provided with a microcomputer direct current insulation detection device.
In this embodiment, the ac power distribution system includes an ac grid box, and the ac output terminal of the integrated inverter 1 is connected to the ac bus 8 of the ac grid box.
Alternating current output by the integrated converter 1 is input into an alternating current power distribution system through an alternating current parallel net cage grid connection, and is converged with other power generation systems through the alternating current parallel net cage.
In this embodiment, the grid-connected point of the ac and net cage should be provided with an obvious on-off point, and a circuit breaker which is easy to operate, has an obvious on-off indication, and has an on-off fault current capability should be installed. The circuit breaker can be a miniature, plastic shell or universal circuit breaker, the breaking capacity of the equipment is selected according to the short-circuit current level, and a certain margin is required to be reserved. The circuit breaker has the functions of short circuit instant, long-delay protection, shunt tripping and the like, is configured with the functions of no-voltage tripping and low-voltage locking and closing according to actual requirements, and is also configured with a residual current protection device.
In this embodiment, the photovoltaic power generation system 2 includes a photovoltaic array, a dc link module, and a lightning protection grounding module, and the photovoltaic array is connected to the integrated inverter 1 through the dc link module.
Specifically, the photovoltaic array is composed of 6-18 groups of photovoltaic assemblies 9, the 6-18 groups of photovoltaic assemblies 9 are connected in parallel to the integrated converter 1, and each group of photovoltaic assemblies 9 are connected in series by 18 pieces of 550Wp high-efficiency monocrystalline silicon.
The photovoltaic cable is a PV-1-F-1x4mm < 2 > special cable, is laid along the component support, the transverse part of the photovoltaic cable is fixed at the groove of the purline of the support, and a PVC protection pipe is penetrated when the photovoltaic cable spans or is partially exposed to be laid.
In this embodiment, 18 groups of photovoltaic modules 9 are selected to be connected in parallel to the dc input switch module 11 of the integrated converter 1, 18 dc input switches of the dc input switch module 11 are connected to the 18 groups of photovoltaic modules 9 in a one-to-one correspondence manner, and high-voltage dc output by the 18 groups of photovoltaic modules 9 is respectively input to the input dc EMI filter module through the dc switches for filtering.
The component detection module 10 performs component detection on 18 access loops respectively.
Each two paths of the filtered high-voltage direct current are input to the MPPT circuit 14, correspondingly, in this embodiment, there are 9 MPPT circuits 14, the high-voltage direct current is input to the integrated converter DC bus 15 through the 9 MPPT circuits 14, respectively, a part of the high-voltage direct current is output to the DC-DC converter module 16 through the integrated converter DC bus 15 for conversion, and a part of the high-voltage direct current is output to the DC-AC inverter module 20 through the integrated converter DC bus 15 for inversion.
The high-voltage direct current is converted into low-voltage direct current through the DC-DC conversion module 16, then sequentially passes through the direct current filter 17, the direct current relay 18 and the output direct current EMI filter 19, is filtered by the output direct current EMI filter 19 and then is output to a direct current bus of the direct current power supply module.
The high-voltage direct current is inverted into low-voltage alternating current through the DC-AC inversion module 20, then sequentially passes through the alternating current filter 21, the alternating current relay 22 and the output alternating current EMI filter 23, and is filtered and output to the alternating current grid-connected box of the alternating current power distribution network through the output alternating current EMI filter 23.
In this embodiment, the integrated inverter 1 further includes a first dc lightning arrester 24, a second dc lightning arrester 25, and an ac lightning arrester 26, where the first dc lightning arrester 24 is disposed between the input dc switch module and the input dc EMI filter 13, the second dc lightning arrester 25 is disposed between the output dc EMI filter 19 and the dc power system, and the ac lightning arrester 26 is disposed between the output ac EMI filter 23 and the ac distribution box.
Although the embodiments of the present invention have been described in detail with reference to the accompanying drawings, the embodiments of the present invention are not limited to the details of the above embodiments, and various simple modifications can be made to the technical solutions of the embodiments of the present invention within the technical idea of the embodiments of the present invention, and the simple modifications all belong to the protection scope of the embodiments of the present invention.
It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, the embodiments of the present invention do not describe every possible combination.
Those skilled in the art will understand that all or part of the steps in the method according to the above embodiments may be implemented by a program, which is stored in a storage medium and includes several instructions to enable a single chip, a chip, or a processor (processor) to execute all or part of the steps in the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
In addition, any combination of various different implementation manners of the embodiments of the present invention is also possible, and the embodiments of the present invention should be considered as disclosed in the embodiments of the present invention as long as the combination does not depart from the spirit of the embodiments of the present invention.
Claims (10)
1. A power supply system for a power plant, characterized by comprising a dc power supply system, an ac power distribution system, an integrated converter (1) and a photovoltaic power generation system (2), the photovoltaic power generation system (2) being connected to an input of the integrated converter (1), a dc output of the integrated converter (1) being connected to the dc power supply system, and an ac output of the integrated converter (1) being connected to the ac power distribution system.
2. A power plant supply system according to claim 1, characterized in that the integrated converter (1) comprises an integrated converter DC bus (15), a DC-DC converter module (16) and a DC-AC inverter module (20), wherein an input of the integrated converter DC bus (15) is connected to the photovoltaic power generation system (2), an output of the integrated converter DC bus (15) is connected to an input of the DC-DC converter module (16) and an input of a DC-AC inverter, respectively, an output of the DC-DC converter module (16) is connected to a DC bus of the DC power system, and an output of the DC-AC inverter module (20) is connected to an AC bus (8) of the AC power distribution system.
3. A power plant supply system according to claim 2, characterized in that the integrated converter (1) further comprises a component detection module (10), the input of the component detection module (10) being connected to the photovoltaic power generation system (2), the component detection module (10) being adapted to monitor the insulation impedance function of the integrated converter (1) access loop and to detect the polarity reversal function of the integrated converter (1).
4. A power plant supply system according to claim 2, characterized in that the integrated converter (1) further comprises an input dc EMI filter (13), the input of the input dc EMI filter (13) being connected to the photovoltaic power generation system (2), the output of the input dc EMI filter (13) being connected to the integrated converter dc bus (15).
5. A power plant supply system according to claim 4, characterized in that the integrated converter (1) further comprises an MPPT circuit (14), the MPPT circuit (14) being connected in series between the input DC EMI filter (13) and the integrated converter DC bus (15).
6. A power plant supply system according to claim 4, characterized in that the integrated converter (1) further comprises a DC input switch module (11), the input of the DC input switch module (11) being connected to the output of the photovoltaic power generation system (2), the output of the DC input switch module (11) being connected to the input DC EMI filter (13).
7. A power plant supply system according to claim 2, characterized in that the integrated converter (1) further comprises an output DC filter module and an output AC filter module, wherein an input of the output DC filter module is connected to an output of the DC-DC converter module (16), an output of the output DC filter module is connected to a DC bus of the DC power supply system, an input of the output AC filter module is connected to an output of the DC-AC inverter module (20), and an output of the output AC filter module is connected to an AC bus (8) of the AC power distribution system.
8. A power plant supply system according to claim 1, characterized in that the dc power supply system comprises a battery pack (3), a first dc bus (4), a second dc bus (5), a first charging device and a second charging device (6), the first charging device is connected to the first dc bus (4), the second charging device (6) is connected to the second dc bus (5), the battery pack (3) is connected to the first dc bus (4) and the second dc bus (5), respectively, a tie switch (7) is connected between the first dc bus (4) and the second dc bus (5), and the dc output of the integrated converter (1) is connected to the first dc bus (4) or the second dc bus (5).
9. A power plant supply system according to claim 1, characterized in that the ac distribution system comprises an ac grid-connected box, the ac output of the integrated converter (1) being connected to an ac bus (8) of the ac grid-connected box.
10. A power plant supply system according to claim 1, characterized in that the photovoltaic power generation system (2) comprises a photovoltaic array, a dc-link module and a lightning protection grounding module, the photovoltaic array being connected to the integrated converter (1) through the dc-link module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211267717.3A CN115663782A (en) | 2022-10-17 | 2022-10-17 | Power supply system of power plant |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211267717.3A CN115663782A (en) | 2022-10-17 | 2022-10-17 | Power supply system of power plant |
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| CN115663782A true CN115663782A (en) | 2023-01-31 |
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| CN202211267717.3A Pending CN115663782A (en) | 2022-10-17 | 2022-10-17 | Power supply system of power plant |
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| CN (1) | CN115663782A (en) |
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