CN215772547U - A power supply system for long-distance water delivery projects - Google Patents
A power supply system for long-distance water delivery projects Download PDFInfo
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- CN215772547U CN215772547U CN202121437561.XU CN202121437561U CN215772547U CN 215772547 U CN215772547 U CN 215772547U CN 202121437561 U CN202121437561 U CN 202121437561U CN 215772547 U CN215772547 U CN 215772547U
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- power supply
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
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Abstract
本实用新型提供了一种用于长距离输水工程的供电系统，属于水利及新能源技术领域。该供电系统包括第一中心开关站、第二中心开关站、主供电线路、多个负荷水利设施和至少一个太阳能光伏组件。第一中心开关站和第二中心开关站间隔布置，主供电线路连接于第一中心开关站和第二中心开关站之间。多个负荷水利设施间隔布置在第一中心开关站和第二中心开关站之间，每个负荷水利设施通过第一连接组件与主供电线路电连接，第一连接组件包括呈三角形布置的第一开关、第二开关和第三开关。太阳能光伏组件设置在相邻两个负荷水利设施之间，且与主供电线路电连接。该长距离输水工程的供电系统能够提高供电可靠性。
The utility model provides a power supply system for a long-distance water delivery project, which belongs to the technical field of water conservancy and new energy. The power supply system includes a first central switch station, a second central switch station, a main power supply line, a plurality of load water conservancy facilities and at least one solar photovoltaic module. The first central switching station and the second central switching station are arranged at intervals, and the main power supply line is connected between the first central switching station and the second central switching station. A plurality of load water conservancy facilities are arranged at intervals between the first central switch station and the second central switch station, each load water conservancy facility is electrically connected to the main power supply line through a first connection assembly, and the first connection assembly switch, second switch and third switch. The solar photovoltaic module is arranged between two adjacent load water conservancy facilities and is electrically connected with the main power supply line. The power supply system of the long-distance water transmission project can improve the reliability of power supply.
Description
Technical Field
The utility model relates to the technical field of water conservancy and new energy, in particular to a power supply system for long-distance water transmission engineering.
Background
A plurality of gate stations and pump stations are generally arranged along the long-distance water delivery project, and the gate stations and the pump stations have flood control functions and the like. Taking the south-to-north water transfer project as an example, the south-to-north water transfer project is a strategic project of the people's republic of China and is divided into three routes, namely east, middle and west. The length of the midline project is 1432km, hundreds of water conservancy facilities such as a water diversion port, a water return gate, an inverted siphon outlet, a pump station, a gate station and the like are arranged along the midline project and need to be powered, and a large part of facilities need to be powered by a dual power supply.
In the related art, in order to ensure the power supply of the water conservancy facilities, a 35kV line is often specially designed along the line for ensuring the power supply, and a central switching station is arranged at a proper position for leading to a peripheral power supply. By adopting the above mode to supply power, dozens of water conservancy facilities are often arranged between two central switch stations, and a pi connection mode is adopted to access a 35kV circuit, so that double power supply is realized.
Because the water conservancy facilities of the special circuit are sequentially connected between the two central switch stations, if two water conservancy facilities or a circuit connected by the two water conservancy facilities are failed at the same time, other water conservancy facilities between the two water conservancy facilities may lose a power supply, the hidden danger that a large amount of water conservancy facilities on a water transmission line cannot normally operate and work exists, and the power supply reliability is poor.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a power supply system for long-distance water transmission engineering, which can ensure normal power supply of other water conservancy facilities between two central switching stations when individual load water conservancy facilities or lines between the two central switching stations break down, and improve the power supply reliability. The technical scheme is as follows:
the embodiment of the utility model provides a power supply system for long-distance water transmission engineering, which comprises: a first central switch station, a second central switch station, a main power supply line, a plurality of load water conservancy facilities and at least one solar photovoltaic component,
the first central switching station and the second central switching station are arranged at intervals along the extending direction of the long-distance water transmission engineering line, one end of the main power supply line is electrically connected with the first central switching station, and the other end of the main power supply line is electrically connected with the second central switching station;
the plurality of load water conservancy facilities are arranged between the first central switch station and the second central switch station at intervals along the extension direction of the main power supply line, each load water conservancy facility is electrically connected with the main power supply line through a first connecting assembly, the first connecting assembly comprises a first switch, a second switch and a third switch which are arranged in a triangular shape, one end of the first switch and one end of the second switch are electrically connected with the main power supply line and are arranged at intervals, the other end of the first switch and the other end of the second switch are converged and are electrically connected with the load water conservancy facilities, and the third switch is arranged on the main power supply line and is positioned between one end of the first switch and one end of the second switch;
the solar photovoltaic components are arranged between two adjacent load water conservancy facilities and are electrically connected with the main power supply line.
Optionally, solar PV modules pass through the second coupling assembling with the main power supply line electricity is connected, the second coupling assembling is including being fourth switch, fifth switch and the sixth switch that triangle-shaped arranged, the one end of fourth switch with the one end of fifth switch with main power supply line electricity is connected and mutual interval arrangement, the other end of fourth switch with the other end of fifth switch collect each other and with the load water conservancy facility electricity is connected, the sixth switch sets up on the main power supply line and be located the one end of fourth switch with between the one end of fifth switch.
Optionally, the power supply system further includes a first transformer, one end of the first transformer is electrically connected to the load water conservancy facility, and the other end of the first transformer is electrically connected to the other end of the first switch and the other end of the second switch.
Optionally, the first switch, the second switch, and the third switch are circuit breakers, and the fourth switch, the fifth switch, and the sixth switch are fuses.
Optionally, the solar photovoltaic module comprises a plurality of solar panels, and the solar panels are uniformly arranged at intervals along the extending direction of the long-distance water delivery engineering line.
Optionally, the solar photovoltaic module further comprises a power transformation module, the power transformation module comprises an inverter and a second transformer, the inverter is electrically connected with the plurality of solar panels, one end of the second transformer is electrically connected with the inverter, and the other end of the second transformer is electrically connected with the main power supply line.
Optionally, the other end of the second transformer is electrically connected to the adjacent load hydraulic facility.
Optionally, the power supply system further comprises a storage battery electrically connected with the plurality of solar panels.
Optionally, the supply voltage of the main power supply line is 35 kV.
Optionally, the load water conservancy facility includes, but is not limited to, a water diversion port, a water return gate, an inverted siphon outlet, a pumping station, or a gate station.
The technical scheme provided by the embodiment of the utility model has the beneficial effects that at least:
the first central switching station and the second central switching station which are arranged on the long-distance water transmission engineering line are respectively connected with peripheral power supplies, and simultaneously supply power to a main power supply line connected between the first central switching station and the second central switching station. A plurality of load water conservancy facilities that set up between first central switch station and second central switch station all insert main power supply line through first connecting elements. When the power supply system normally operates, the circuit where the first switch in each first connecting assembly is located receives electric energy transmitted by the first central switch station, the circuit where the second switch is located receives electric energy transmitted by the second central switch station, and the electric energy passing through the first switch and the second switch is finally converged and input into the load water conservancy facility, so that dual power supply of the load water conservancy facility is realized. And the solar photovoltaic module positioned between two adjacent load water conservancy facilities can convert light energy into electric energy through a photovoltaic effect and transmit the converted electric energy into a main power supply line, so that auxiliary power supply is realized for the load water conservancy facilities connected into the main power supply line.
When the power supply system is abnormal, aiming at the fault of individual load water conservancy facilities, the first switch and the second switch in the first connecting assembly corresponding to the load water conservancy facility with the fault are cut off to disconnect the electric connection between the load water conservancy facility and the main power supply line, and the third switch is still closed to ensure the conduction of the main power supply line. For a fault of a certain section of the main power supply line, the connection between the first connecting assembly adjacent to the corresponding section and the main power supply line can be cut off, one of the first central switch station and the second central switch station and at least one solar photovoltaic assembly are used for supplying power, or the load water conservancy facility is supplied with power only through the at least one solar photovoltaic assembly. When individual load water conservancy facilities or lines between the first central switch station and the second central switch station break down, normal power supply of other load water conservancy facilities is guaranteed, and power supply reliability is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a power supply system for long-distance water transmission engineering according to an embodiment of the present invention;
fig. 2 is a partial structural schematic view of a first connection assembly according to an embodiment of the present invention;
fig. 3 is a partial structural schematic view of a second connecting component according to an embodiment of the present invention;
fig. 4 is a schematic partial structural diagram of a power supply system for long-distance water transmission engineering according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
In the related art, in order to ensure the power supply of the water conservancy facilities, a 35kV line is often specially designed along the line for ensuring the power supply, and a central switching station is arranged at a proper position for leading to a peripheral power supply. By adopting the above mode to supply power, dozens of water conservancy facilities are often arranged between two central switch stations, and a pi connection mode is adopted to access a 35kV circuit, so that double power supply is realized.
Because the water conservancy facilities of the special circuit are sequentially connected between the two central switch stations, if two water conservancy facilities or a circuit connected by the two water conservancy facilities are failed at the same time, other water conservancy facilities between the two water conservancy facilities may lose a power supply, the hidden danger that a large amount of water conservancy facilities on a water transmission line cannot normally operate and work exists, and the power supply reliability is poor.
Fig. 1 is a schematic structural diagram of a power supply system for long-distance water transmission engineering according to an embodiment of the present invention. Fig. 2 is a partial structural schematic diagram of a first connection assembly according to an embodiment of the present invention. Fig. 3 is a partial structural schematic diagram of a second connection component according to an embodiment of the present invention. Fig. 4 is a schematic partial structural diagram of a power supply system for long-distance water transmission engineering according to an embodiment of the present invention. As shown in fig. 1 to 4, by practice, the applicant provides an electric power supply system for long-distance water transmission projects, comprising a first central switching station 1, a second central switching station 2, a main power supply line 3, a plurality of load water conservancy facilities 4 and at least one solar photovoltaic module 5.
Wherein, the first central switch station 1 and the second central switch station 2 are arranged at intervals along the extending direction of the long-distance water transmission engineering line m. One end of the main power supply line 3 is electrically connected with the first central switching station 1, and the other end of the main power supply line 3 is electrically connected with the second central switching station 2.
A plurality of load water conservancy facilities 4 are arranged at intervals between the first central switching station 1 and the second central switching station 2 along the extension direction of the main power supply line 3, and each load water conservancy facility 4 is electrically connected with the main power supply line 3 through a first connecting assembly 6. The first connecting assembly 6 comprises a first switch 61, a second switch 62 and a third switch 63 which are arranged in a triangular shape, one end of the first switch 61 and one end of the second switch 62 are electrically connected with the main power supply line 3 and are arranged at intervals, and the other end of the first switch 61 and the other end of the second switch 62 are converged and electrically connected with the load water conservancy facility 4. The third switch 63 is provided on the main power supply line 3 between one end of the first switch 61 and one end of the second switch 62.
The solar photovoltaic component 5 is arranged between two adjacent load water conservancy facilities 4 and is electrically connected with the main power supply line 3.
In the embodiment of the utility model, the first central switch station 1 and the second central switch station 2 arranged on the long-distance water transmission engineering line m are respectively connected with peripheral power supplies and simultaneously supply power to a main power supply line 3 connected between the first central switch station 1 and the second central switch station 2. A plurality of load water conservancy facilities 4 that set up between first central switchyard 1 and second central switchyard 2 all insert main power supply line 3 through first connecting elements 6. When the power supply system normally operates, the first switch 61, the second switch 62 and the third switch 63 in each first connection assembly 6 are closed and powered on, wherein the lines of the first switch 61 and the second switch 62 are arranged in a triangle with the main power supply line 3, the line of the first switch 61 is close to the first central switch station 1 and can receive the electric energy transmitted by the first central switch station 1, the line of the second switch 62 is close to the second central switch station 2 and can receive the electric energy transmitted by the second central switch station 2, and the electric energy passing through the first switch 61 and the second switch 62 is finally converged and input into the load water conservancy facility 4, so that the dual power supply of the load water conservancy facility 4 is realized. And the solar photovoltaic module 5 positioned between two adjacent load water conservancy facilities 4 can convert light energy into electric energy through a photovoltaic effect and transmit the converted electric energy to the main power supply line 3, so that the load water conservancy facilities 4 accessed into the main power supply line 3 are subjected to auxiliary power supply.
Illustratively, as shown in fig. 1, in the embodiment of the present invention, three load water conservancy facilities 4 are disposed between a first central switching station 1 and a second central switching station 2, a solar photovoltaic module 5 is disposed between two adjacent load water conservancy facilities 4, and the main power supply line is sequentially divided into a first section 3a, a second section 3b, a third section 3c, a fourth section 3d, a fifth section 3e, and a sixth section 3f by the access of the three load water conservancy facilities 4 and the two solar photovoltaic modules 5.
When an abnormality occurs in the power supply system, for example, a fault occurs in an individual load hydraulic facility 4 of the plurality of load hydraulic facilities 4, the first switch 61 and the second switch 62 in the first connecting component 6 corresponding to the fault load hydraulic facility 4 are cut off, so that the load hydraulic facility 4 is electrically disconnected from the main power supply line 3, and the third switch 63 is still closed, so that the main power supply line 3 is ensured to be conducted. When the load water conservancy facilities 4 are subjected to power-off repair, the main power supply line 3 can still supply power to other load water conservancy facilities 4 by double power supplies; when a fault occurs in a certain position in the main power supply line 3, the first switch 61 and the third switch 63 in the first connecting component 6 corresponding to the load water conservancy facility 4 closest to the first central switching station 1 can be disconnected when the first section 3a of the main power supply line 3 fails. At this time, although the main power supply line 3 loses the electric energy supply of the first central switching station 1, the plurality of load water conservancy facilities 4 can still receive the electric energy supplied by the second central switching station 2 and the at least one solar photovoltaic module 5, so that the normal working operation is ensured; when two faults occur in the main power supply line 3, for example, when the first section 3a and the fifth section 3e of the main power supply line 3 are faulty, the first switch 61 and the third switch 63 in the first connecting assembly 6 corresponding to the load water conservancy 4 closest to the first central switching station 1 can be disconnected, and the first switch 61 and the third switch 63 in the first connecting assembly 6 corresponding to the load water conservancy 4 closest to the second central switching station 2 can be disconnected. At the moment, the main power supply line between the first section 3a and the fifth section 3e loses the electric energy supply of the first central switch station 1 and the second central switch station 2, but the two load water conservancy facilities 4 between the first section 3a and the fifth section 3e and the two solar photovoltaic modules 5 form a local microgrid, and the load water conservancy facilities 4 have the characteristics of low power consumption load and low power consumption frequency, so that the normal power supply of the two load water conservancy facilities 4 can be ensured by utilizing the electric energy generated by the two solar photovoltaic modules 5, and the normal working operation is ensured. When individual load water conservancy facilities or lines between the first central switch station and the second central switch station break down, normal power supply of other load water conservancy facilities is guaranteed, and power supply reliability is improved.
It should be noted that, as shown in fig. 1, the embodiment in which three load water conservancy facilities 4 are disposed between the first central switching station 1 and the second central switching station 2 is only an example, in other possible implementation manners, four, five or more load water conservancy facilities 4 may be disposed in the first central switching station 1 and the second central switching station 2 according to an actual plan, and the present invention is not limited thereto.
Optionally, the supply voltage of the main supply line 3 is 35 kV. Illustratively, the supply voltage of a long-distance power supply line generally includes both 10kV and 35 kV. In the embodiment of the utility model, by adopting the main power supply line 3 with the power supply voltage of 35kV, compared with a 10kV line, under the same power, the current passing through the line is smaller, the electric energy loss is smaller under long-distance transmission, the safety is higher, and the power supply reliability of a power supply system can be further improved.
Optionally, the solar photovoltaic module 5 is electrically connected to the main power supply line 3 through a second connection assembly 7, the second connection assembly 7 includes a fourth switch 71, a fifth switch 72 and a sixth switch 73 which are arranged in a triangle, one end of the fourth switch 71 and one end of the fifth switch 72 are electrically connected to the main power supply line 3 and are arranged at intervals, the other end of the fourth switch 71 and the other end of the fifth switch 72 are converged and electrically connected to the load water conservancy 4, and the sixth switch 73 is disposed on the main power supply line 3 and is located between one end of the fourth switch 71 and one end of the fifth switch 72. Exemplarily, in the embodiment of the present invention, the solar photovoltaic module 5 is connected to the main power supply line 3 through the second connection module 7. When the photovoltaic module 5 fails, the fourth switch 71 and the fifth switch 72 may be opened to disconnect the electrical connection between the solar photovoltaic module 5 and the main power supply line 3, and the sixth switch 73 remains closed to ensure the conduction of the main power supply line 3. When the solar photovoltaic module 5 with the fault is subjected to power-off repair, the main power supply line 3 can still supply power to other load water conservancy facilities 4 by using a dual power supply. When a section of the main power supply line 3 between the solar photovoltaic module 5 and the adjacent load water conservancy facility 4 has a fault, the solar photovoltaic module 5 and the section of the fault main power supply line 3 can be disconnected by disconnecting the fourth switch 71 and the sixth switch 73 or disconnecting the fifth switch 72 and the sixth switch 73, so that normal power supply for other sections of the main power supply line 3 is ensured, and the power supply reliability of the power supply system is further improved.
Optionally, the power supply system further includes a first transformer 8, one end of the first transformer 8 is electrically connected to the load water conservancy 4, and the other end of the first transformer 8 is electrically connected to the other end of the first switch 61 and the other end of the second switch 62. Exemplarily, in the embodiment of the present invention, by providing the first transformer 8 between the load water conservancy 4 and the first connection component 6, the voltage of the 35kV high-voltage alternating current input by the main power supply line 3 can be adjusted in a step-down manner for different load water conservancy 4 so as to match with the rated working voltage of the load water conservancy 4, thereby further improving the power supply reliability of the power supply system.
Alternatively, the first switch 61, the second switch 62, and the third switch 63 are circuit breakers, and the fourth switch 71, the fifth switch 72, and the sixth switch 73 are fuses. Illustratively, the protection mode of the circuit breaker is tripping, power supply can be recovered through closing after a fault is eliminated, the protection mode of the fuse is fusing, and the fuse body needs to be replaced to recover power supply after the fault is eliminated. The tripping speed of the circuit breaker is in the order of milliseconds, while the blowing speed of the fuse is in the order of microseconds, which opens faster than the circuit breaker. In the utility model, different switch types are selected according to different power supply and power transmission lines, so that the switch types can be conveniently distinguished during assembly, maintenance and replacement. In other possible implementations, the types of fuses and breakers may be used interchangeably, and the utility model is not limited thereto.
Optionally, the solar photovoltaic module 5 comprises a plurality of solar panels 51, and the plurality of solar panels 51 are uniformly spaced along the extending direction of the long-distance water transportation engineering line m. Illustratively, in the embodiment of the present invention, the solar photovoltaic module 5 utilizes a plurality of solar panels 51 disposed along the long-distance water transportation engineering line m, i.e. the water transportation main canal, to contact with sunlight, and converts light energy into electric energy by utilizing the photovoltaic effect to supply power to the main power supply line 3. And through arranging a plurality of solar cell panel 51 along the even interval of the extending direction of long distance water delivery engineering circuit m, make full use of the space along long distance water delivery engineering circuit m, make solar cell panel 51's coverage higher, can produce more electric energy, further improved power supply system's power supply reliability.
Optionally, the solar photovoltaic module 5 further includes a power transformation module 52, the power transformation module 52 includes an inverter 521 and a second transformer 522, the inverter 521 is electrically connected to the plurality of solar panels 51, one end of the second transformer 522 is electrically connected to the inverter 521, and the other end of the second transformer 522 is electrically connected to the main power supply line 3. Exemplarily, in the embodiment of the present invention, by providing the power transformation assembly 52, the dc power generated by the solar cell panel 52 may be converted into ac power of low voltage by the inverter 521, and then the ac power of low voltage may be boosted into ac power of high voltage by the second transformer 522. The boosted high-voltage alternating current can be directly used for various electric equipment along the line m of the water delivery engineering. Or the power supply system is directly connected with the main power supply line 3 for transmission, auxiliary power supply is carried out on the load water conservancy facilities 4, and the power supply reliability of the power supply system is further improved.
Alternatively, the other end of second transformer 522 is electrically connected to an adjacent load hydraulic facility 4. Illustratively, in the embodiment of the present invention, by electrically connecting the other end of the second transformer 522 with the load water conservancy facilities 4, when the main power supply line 3 between the solar photovoltaic module 5 and the adjacent load water conservancy facilities has a fault, the electric energy generated by the solar photovoltaic module 5 and boosted by the second transformer 522 may be directly conducted to the adjacent load water conservancy facilities 4 for emergency power supply, so as to avoid power failure and further improve the power supply reliability of the power supply system.
Optionally, the power supply system further comprises a storage battery 53, and the storage battery 53 is electrically connected with the plurality of solar panels 51. Illustratively, in the embodiment of the present invention, after the light energy is converted into the electric energy by the plurality of solar panels 51, the partially converted direct current may be stored by the storage battery 53. When the main power supply line 3 between the solar photovoltaic module 5 and the adjacent load water conservancy facilities breaks down and the load water conservancy facilities 4 lack power supply, the storage battery 53 storing power can be transported nearby to the load water conservancy facilities 4 for emergency power supply, so that the power supply reliability of the power supply system is further improved.
Alternatively, load hydro facility 4 includes, but is not limited to, a water diversion opening, a water return gate, an inverted siphon outlet, a pumping station, or a gate station. Illustratively, in the embodiment of the utility model, the long-distance water transmission engineering line m carries out long-distance scheduling on water resources through a manual water transmission main canal. The load water conservancy facility 4 is an electric load device arranged on a water diversion port, a water return gate, an inverted siphon outlet, a pump station or a gate station and the like on a line of the artificial water delivery main canal, and realizes the diversion, the cutoff, the guidance and the storage of water flow in the artificial water delivery main canal.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and claims of the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprise" or "comprises", and the like, means that the element or item listed before "comprises" or "comprising" covers the element or item listed after "comprising" or "comprises" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, which may also change accordingly when the absolute position of the object being described changes.
The utility model is not to be considered as limited to the particular embodiments shown and described, but is to be understood that various modifications, equivalents, improvements and the like can be made without departing from the spirit and scope of the utility model.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121437561.XU CN215772547U (en) | 2021-06-25 | 2021-06-25 | A power supply system for long-distance water delivery projects |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121437561.XU CN215772547U (en) | 2021-06-25 | 2021-06-25 | A power supply system for long-distance water delivery projects |
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| CN215772547U true CN215772547U (en) | 2022-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121437561.XU Withdrawn - After Issue CN215772547U (en) | 2021-06-25 | 2021-06-25 | A power supply system for long-distance water delivery projects |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113839380A (en) * | 2021-06-25 | 2021-12-24 | 长江勘测规划设计研究有限责任公司 | A power supply system for long-distance water delivery projects |
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2021
- 2021-06-25 CN CN202121437561.XU patent/CN215772547U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113839380A (en) * | 2021-06-25 | 2021-12-24 | 长江勘测规划设计研究有限责任公司 | A power supply system for long-distance water delivery projects |
| CN113839380B (en) * | 2021-06-25 | 2025-06-27 | 长江勘测规划设计研究有限责任公司 | A power supply system for long-distance water transmission projects |
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