CN109802422B - Flexible looped network interconnection device and system - Google Patents
Flexible looped network interconnection device and system Download PDFInfo
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- CN109802422B CN109802422B CN201910117384.8A CN201910117384A CN109802422B CN 109802422 B CN109802422 B CN 109802422B CN 201910117384 A CN201910117384 A CN 201910117384A CN 109802422 B CN109802422 B CN 109802422B
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Abstract
The invention discloses a flexible looped network interconnection device and a system, wherein the flexible looped network interconnection device comprises: a plurality of electric wire netting interchange port, at least one first flexible interconnection module and at least one second flexible interconnection module, interconnect between first flexible interconnection module and the flexible interconnection module of second, wherein, first flexible interconnection module parallel connection is in between two interchange ports, and first interconnection module includes: at least one first DC port and/or at least one first AC port; the flexible interconnection module of second series connection is between two interchange ports, and the flexible interconnection module of second includes: and the second direct current port or the second alternating current port realizes interconnection of flexible ring networks at each end of alternating current and bidirectional flow of tide, so that the flexible switching and control modes of the power distribution operation mode are flexible.
Description
Technical Field
The invention relates to the technical field of power equipment, in particular to a flexible ring network interconnection device and system.
Background
The distribution network is located at the end of the power system, directly faces to power users, and undertakes the tasks of distributing electric energy and serving the customers. At present, the construction of a power distribution network is lagged, the structure is unreasonable, the closed-loop design and the open-loop operation limit the regulation and control means, the flexibility of the operation control of the power distribution network is restricted, and the problems of unbalanced load of a feeder line, long power supply recovery time and the like are caused. On the other hand, the increase of the proportion of nonlinear and impact loads in the power distribution network and the continuous improvement of the permeability of new energy provide higher requirements for the guarantee means of the power quality and the power supply reliability of the power distribution network. The existing power distribution network is facing to great challenges in various aspects such as customization and diversification of power consumption requirements, large-scale access of distributed power supplies, complicated trend coordination control and the like. The problems are difficult to be simultaneously and effectively solved by adopting conventional regulation and control means such as a conventional switch and the like.
Disclosure of Invention
Therefore, the invention provides a flexible ring network interconnection device and system, which overcome the defects of power supply interruption, loop closing impact and the like caused by the conventional switch switching operation in the prior art.
In a first aspect, an embodiment of the present invention provides a flexible ring network interconnection apparatus, including: a plurality of electric wire netting interchange port, at least one first flexible interconnection module and at least one second flexible interconnection module, interconnect between first flexible interconnection module and the flexible interconnection module of second, wherein, first flexible interconnection module parallel connection in two between the electric wire netting interchange port, first flexible interconnection module includes: at least one first DC port and/or at least one first AC port; the flexible interconnection module of second series connection in two between the electric wire netting alternating current port, the flexible interconnection module of second includes: a second dc port or a second ac port.
In one embodiment, the first dc port and the second dc port are used for direct interconnection, or are connected to a dc bus through a series switch.
In one embodiment, the first ac port and the second ac port are used for direct interconnection, or are connected to an ac bus through a series switch.
In an embodiment, the first flexible interconnect module comprises a multi-port power electronic transformer comprising: at least one first DC port and/or at least one first AC port.
In one embodiment, the second flexible interconnect module comprises: the series transformer comprises a primary winding, one end of the primary winding of the series transformer is connected with an alternating current port, the other end of the primary winding of the series transformer is connected with the other alternating current port, and a secondary winding of the series transformer is connected with the voltage source converter.
In one embodiment, the series transformer and the voltage source converter are connected directly or through a series switch.
In one embodiment, the second flexible interconnect module further comprises: and the bypass switch is connected in parallel with two ends of the primary side winding and/or the secondary side winding of the series transformer and is used for carrying out short-circuit protection on the series transformer.
In a second aspect, the present invention provides a flexible ring network interconnection system, including: the flexible ring network interconnection device comprises a distributed power supply, a load, an energy storage device and the first flexible interconnection module, wherein the first flexible interconnection module and the second flexible interconnection module are respectively connected to a public bus; and the distributed power supply, the load and the energy storage device are connected to the public bus and realize tidal current interconnection with each power grid.
The technical scheme of the invention has the following advantages:
1. the invention provides a flexible looped network interconnection device, comprising: the flexible power distribution system comprises a plurality of power grid alternating current ports, at least one first flexible interconnection module and at least one second flexible interconnection module, wherein the first flexible interconnection module is interconnected with the second flexible interconnection module, the first flexible interconnection module can be a multi-end opening power electronic transformer and comprises at least one first direct current port and/or at least one first alternating current port which are/is connected between the two power grid alternating current ports in parallel, the second flexible interconnection module can comprise a series transformer T and a voltage source converter VSC, the series connection is formed between the two power grid alternating current ports, the interconnection of flexible looped networks at each alternating current end is realized, and the power flow flows in two directions, so that the power distribution operation mode is flexibly switched and the control mode is flexible.
2. According to the flexible ring network interconnection system, the flexible interconnection modules in the flexible ring network interconnection device are interconnected or connected to the public bus, so that the flexible ring network interconnection at each end is exchanged, the power is flexibly regulated and controlled, the tide flows in two directions, and each flexible interconnection module is connected to the public bus, so that the multi-path power supply of the public bus is realized, and the reliability of the power supply system is enhanced; and a distributed power supply, a load and the like are connected to the public bus, so that the permeability and the absorption capacity of the distributed power supply are improved, and the economical efficiency and the reliability of the power distribution network are improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a flowchart of an example of a flexible ring network interconnection apparatus according to an embodiment of the present invention;
fig. 2 is a flowchart of another example of the flexible ring network interconnection apparatus according to the embodiment of the present invention;
fig. 3 is a flowchart of another example of the flexible ring network interconnection apparatus according to the embodiment of the present invention;
fig. 4 is a flowchart of another specific example of the flexible ring network interconnection apparatus according to the embodiment of the present invention;
fig. 5 is a flowchart of another specific example of the flexible ring network interconnection apparatus according to the embodiment of the present invention;
fig. 6 is a flowchart of a specific example of a flexible ring network interconnection system according to an embodiment of the present invention;
fig. 7 is a flowchart of another specific example of the flexible ring network interconnection system according to the embodiment of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, or may be communicated with each other inside the two elements, or may be wirelessly connected or wired connected. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
An embodiment of the present invention provides a flexible ring network interconnection apparatus, as shown in fig. 1, including: a plurality of ac grid ports (fig. 1 illustrates, but is not limited to, 2 ac ports), at least one first flexible interconnection module 11, and at least one second flexible interconnection module 21, where the first flexible interconnection module and the second flexible interconnection module are interconnected (fig. 1 illustrates, but is not limited to, one first flexible interconnection module 11 and one second flexible interconnection module 22), and the first flexible interconnection module is connected in parallel between two ac grid ports, and the first flexible interconnection module includes: at least one first DC port and/or at least one first AC port; the flexible interconnection module of second series connection is between two electric wire netting interchange ports, the flexible interconnection module of second includes: a second dc port or a second ac port.
In practical applications, the first dc port and the second dc port are used for direct interconnection, or are connected to a dc bus through a series switch. The first alternating current port and the second alternating current port are used for direct interconnection, or are connected to an alternating current bus, or are connected to the alternating current bus through a series switch. In practical application, the first direct current port corresponding to the voltage class voltage property is interconnected with the second direct current port, and the first alternating current port corresponding to the voltage class voltage property is interconnected with the second alternating current port.
The flexible ring network interconnection device provided by the embodiment of the invention replaces a mode of a feeder line connection switch in a multi-section-multi-connection power distribution network adopted in the prior art, and can adjust the power flow between the connected feeder lines in real time according to a control instruction, so that the power flow distribution of the whole system is regulated and controlled, the operation scheduling of the power distribution network is more flexible, and the flexible ring network interconnection device has the characteristics of flexible switching of operation modes and flexible control mode.
In a specific embodiment, the flexible ring network interconnection apparatus may include: four electric wire netting ac ports, a first flexible interconnection module 11 and three second flexible interconnection modules 21, as shown in fig. 2, this flexible looped network interconnection device specifically includes: the four ac ports are respectively an ac port 1, an ac port 2, an ac port 3, and an ac port 4, and all of the four ac ports may be medium voltage 10 KV. The alternating current port 1 and the alternating current port 2 are located on one feeder line, and the two feeder lines are electrically interconnected. The first flexible interconnection module 11 is connected in parallel between the ac port 1 and the ac port 2 through an ac port B1 thereof, and leads out a medium-voltage dc port B2 and a low-voltage ac port B3, the three second flexible interconnection modules 21 are connected in series between the ac port 1 and the ac port 2 through an ac port C1 and an ac port C2 thereof, and lead out a low-voltage ac port C3, connected in series between the ac port 3 and the ac port 4 through an ac port C4 and an ac port C5 thereof, and lead out a low-voltage ac port C6, and connected in series between the ac port 3 and the ac port 4 through an ac port C7 and an ac port C8 thereof, and lead out a low-voltage ac port C9 thereof, and the low-voltage ac port B3, the low-voltage ac port C3, the low-voltage ac port C6, and the low-voltage ac port C9 thereof are directly interconnected.
In another embodiment, as shown in fig. 3, the flexible ring network interconnection device connects the low voltage ac port B3, the low voltage ac port C3, the low voltage ac port C6 and the low voltage ac port C9 to the low voltage dc bus directly or to the dc bus, or to the dc bus through a series switch.
In the embodiment of the invention, as shown in fig. 2 or fig. 3, the low-voltage ac port B3, the low-voltage ac port C3, the low-voltage ac port C6, and the low-voltage ac port C9 are directly interconnected or connected to the common dc bus of the corresponding voltage class, so that the interconnection of the ac system, the medium-voltage dc system, and the low-voltage dc system is realized, the power flow balance of different lines is realized, a plurality of energy paths are formed, a plurality of energy flow directions and paths are formed, and the flexible control of power distribution is realized.
In a particular embodiment, the first flexible interconnect module 11 comprises a multi-port power electronic transformer comprising: in an embodiment of the present invention, as shown in fig. 4, the first flexible interconnect module 11 is a three-port power electronic transformer, the port B1 is a 10KV ac port, the port B2 is a ± 10KV dc port, the port B3 is a ± 375V dc port, the port B1 is connected to the ac port 1, the port B2 is connected to a ± 10KV dc bus, and the port B3 is connected to a ± 375V dc bus, which is by way of example and not limitation, and may be a high-voltage dc port in other embodiments.
In another embodiment, as shown in fig. 5, the first flexible interconnect module 11 is a three-port power electronic transformer, the port B1 is a 10KV ac port, the port B2 is a ± 10KV dc port, and the port B3 is an ac port of 380V, and can be connected to the ac bus 5 to be connected to the ac port 1 through a transformer, which is only by way of example and not limited thereto.
In a specific embodiment, as shown in fig. 4, three second flexible interconnect modules 21 respectively include: the series transformer T and the voltage source converter VSC form a structure comprising 2 10KV alternating current ports and 1 +/-375V direct current port, wherein the port C1, the port C2, the port C4, the port C5, the port C7 and the port C8 are 10KV alternating current ports, and the port C3, the port C6 and the port C9 are +/-375V direct current ports. In the embodiment of the present invention, a bypass switch K is bridged across two ends of a primary winding and a secondary winding of a series transformer T (in other embodiments, the bypass switch K may be provided on the primary winding or the secondary winding) for performing short-circuit protection on the series transformer T, the bypass switch K is closed when the device fails, the device is disconnected when the device normally works, one end of the primary winding is connected to one 10KV ac port, and the other end is connected to another 10KV ac port, which corresponds to port C1 connection port 1, port C2 connection port 2, port C4 connection port 3, port C5 connection port 1, port C7 connection port 1, and port C8 connection port 4 in fig. 3; the secondary winding is connected with the VSC alternating current side of the voltage source converter in series; the connection of the voltage source converter VSC dc side and the first flexible interconnection module 11 to the ± 375V dc bus corresponds to the connection of the ports C3, C6, C9 to the ± 375V dc bus in fig. 3.
In another embodiment, as shown in fig. 5, the second flexible interconnect module 21 further includes: and the AC/DC link is connected with the voltage source converter VSC and converts direct current into alternating current, so that the second flexible interconnection module outputs an alternating current port. The ac port of the first flexible interconnection module and the ac port of the second flexible interconnection module are connected to the ac bus bar 5, which is only by way of example and not limited thereto.
The flexible looped network interconnection device provided by the embodiment of the invention comprises: the method comprises the following steps: the flexible power distribution system comprises a plurality of power grid alternating current ports, at least one first flexible interconnection module and at least one second flexible interconnection module, wherein the first flexible interconnection module can be a multi-end opening power electronic transformer and comprises at least one first direct current port and/or at least one first alternating current port which are/is connected between two power grid alternating current ports in parallel, the second flexible interconnection module can comprise a series transformer T and a voltage source converter VSC, the series transformer T and the voltage source converter VSC are connected between two power grid alternating current ports in series, alternating current flexible looped network interconnection at each end is achieved, tidal current flows in two directions, and therefore the flexible switching and control modes of power distribution operation modes are.
Example 2
An embodiment of the present invention further provides a flexible ring network interconnection system, as shown in fig. 6 and 7, the flexible ring network interconnection system includes: the distributed power supply, the load, the energy storage device and the flexible ring network interconnection device in embodiment 1 are characterized in that a first flexible interconnection module and a second flexible interconnection module are respectively connected to a common bus; and the distributed power supply and the load are connected to the public bus and realize tidal current interconnection with each power grid.
In practical application, the common bus can be a direct current bus or an alternating current bus, when the common bus is the direct current bus, the distributed power supply can be a photovoltaic cell panel, the load can be a direct current charging pile of an electric vehicle, the energy storage device can be a fixed energy storage device or a mobile energy storage device, such as a mobile energy storage vehicle, the mobile energy storage vehicle is used as a backup energy storage device, a direct current energy storage converter of the energy storage device is a bidirectional converter, the energy storage battery pack is connected to the direct current bus through the direct current energy storage converter, the direct current energy storage converter can perform direct current charging or direct current discharging on the energy storage battery pack, and energy supply is performed when the regulating capacity of the fixed energy storage device is insufficient; when the public bus is an alternating current bus, the distributed power supply can be a wind power generation device, the alternating current load can be the electricity consumption of residents, the energy storage device is a flywheel energy storage device and the like, the alternating current energy storage converter in the energy storage device is also a bidirectional converter in the same way, the flywheel energy storage device can be connected to the alternating current bus through the alternating current energy storage converter, the alternating current energy storage converter can perform alternating current charging or current discharging of the energy storage battery pack, energy supply is performed when the adjusting capacity of the fixed energy storage device is insufficient, the power supply reliability of important loads is guaranteed, the permeability and the absorption capacity of the distributed power supply are improved, and the economical efficiency and the reliability of a power distribution network.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of the invention may be made without departing from the spirit or scope of the invention.
Claims (6)
1. A flexible looped network interconnection device, comprising: a plurality of grid ac ports, at least one first flexible interconnect module, and at least one second flexible interconnect module, said first flexible interconnect module and said second flexible interconnect module being interconnected, wherein,
first flexible interconnection module parallel connection in two between the electric wire netting alternating current port, first flexible interconnection module includes: at least one first DC port and/or at least one first AC port, the first flexible interconnect module comprising a multi-port power electronic transformer, the multi-port power electronic transformer comprising: at least one first DC port and/or at least one first AC port;
the flexible interconnection module of second series connection in two between the electric wire netting alternating current port, the flexible interconnection module of second includes: a second DC port or a second AC port, the second flexible interconnect module comprising: the series transformer comprises a primary winding, one end of the primary winding of the series transformer is connected with an alternating current port, the other end of the primary winding of the series transformer is connected with the other alternating current port, and a secondary winding of the series transformer is connected with the voltage source converter.
2. The flexible ring network interconnection device of claim 1, wherein the first and second DC ports are configured for direct interconnection, or connection to a DC bus via a series switch.
3. The flexible looped network interconnection device according to claim 1, wherein the first ac port and the second ac port are used for direct interconnection, or are connected to an ac bus through a series switch.
4. The flexible looped network interconnection apparatus of claim 1, wherein the series transformer and voltage source converter are connected directly or through a series switch.
5. The flexible looped network interconnection device of claim 4, wherein the second flexible interconnection module further comprises: and the bypass switch is connected in parallel with two ends of the primary side winding and/or the secondary side winding of the series transformer and is used for carrying out short-circuit protection on the series transformer.
6. A flexible ring network interconnection system, comprising: distributed power supply, load, energy storage device and flexible looped network interconnection device according to any one of claims 1 to 5,
the first flexible interconnection module and the second flexible interconnection module are respectively connected to a public bus;
and the distributed power supply, the load and the energy storage device are connected to the public bus and realize tidal current interconnection with each power grid.
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|---|---|---|---|---|
| CN110535133A (en) * | 2019-09-24 | 2019-12-03 | 全球能源互联网研究院有限公司 | A kind of flexibility multimode switching device and system |
| CN111463787B (en) * | 2020-04-22 | 2022-05-13 | 湖北春田电工技术有限公司 | Flexible networking system for power grids with different voltage levels in enterprise |
| CN111682547B (en) * | 2020-07-06 | 2021-11-05 | 梁家诚 | 10kV active power distribution network based on power flow control nodes and control method thereof |
| CN112202173B (en) * | 2020-10-19 | 2022-08-16 | 湖北春田电工技术有限公司 | Medium-voltage bus flexible interconnection power distribution network system |
| CN114362182B (en) * | 2021-12-28 | 2024-04-26 | 国网北京市电力公司 | Four-terminal flexible direct-current interconnection dicyclo network distribution system |
| CN114865634B (en) * | 2022-01-17 | 2024-05-07 | 国网智能电网研究院有限公司 | Flexible interconnection wiring structure of alternating current power grid and control method |
| CN115360754A (en) * | 2022-08-23 | 2022-11-18 | 国网福建省电力有限公司石狮市供电公司 | Centralized flexible-direct interconnection system suitable for parallel operation of multiple regions |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0917271A3 (en) * | 1997-11-11 | 2000-04-05 | General Electric Company | Compensation for power transfer systems using rotary transformer |
| CN106887957A (en) * | 2017-03-20 | 2017-06-23 | 西安交通大学 | A kind of hybrid distribution transformer of Multiple coil magnetic integrated-type |
| CN106972505A (en) * | 2017-05-05 | 2017-07-21 | 贵州电网有限责任公司电力科学研究院 | The hybrid power electronic transformer and its control method of unified power quality controlling |
| CN107565580A (en) * | 2017-09-06 | 2018-01-09 | 东南大学 | Hybrid power electronic transformer and control method with fault tolerance |
| WO2018098672A1 (en) * | 2016-11-30 | 2018-06-07 | 国网江苏省电力公司电力科学研究院 | New unified power flow controller and control method therefor |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106452136B (en) * | 2016-06-20 | 2019-04-02 | 清华大学 | A kind of multiport converters for energy internet |
| CN107612051B (en) * | 2017-10-26 | 2023-07-14 | 广东电网有限责任公司电力科学研究院 | AC/DC hybrid system based on dual-redundancy power electronic transformer |
-
2019
- 2019-02-15 CN CN201910117384.8A patent/CN109802422B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0917271A3 (en) * | 1997-11-11 | 2000-04-05 | General Electric Company | Compensation for power transfer systems using rotary transformer |
| WO2018098672A1 (en) * | 2016-11-30 | 2018-06-07 | 国网江苏省电力公司电力科学研究院 | New unified power flow controller and control method therefor |
| CN106887957A (en) * | 2017-03-20 | 2017-06-23 | 西安交通大学 | A kind of hybrid distribution transformer of Multiple coil magnetic integrated-type |
| CN106972505A (en) * | 2017-05-05 | 2017-07-21 | 贵州电网有限责任公司电力科学研究院 | The hybrid power electronic transformer and its control method of unified power quality controlling |
| CN107565580A (en) * | 2017-09-06 | 2018-01-09 | 东南大学 | Hybrid power electronic transformer and control method with fault tolerance |
Non-Patent Citations (4)
| Title |
|---|
| Applications of the solid state transformer concept in the electrical power system;F. Bignucolo etal;《2015 AEIT International Annual Conference (AEIT)》;20151016;1-6 * |
| Thoughts on Differential Protection Design of Series Transformer in FACTS Device;Qi Huanhuan etal;《2018 International Conference on Power System Technology (POWERCON)》;20181108;4002-4009 * |
| 基于MMC 的统一潮流控制器交流侧故障特性及保护方案;郑涛等;《电网技术》;20151231;第39卷(第12期);3570-3577 * |
| 统一电能质量控制器的故障响应特性研究;陈国富等;《陝西电力》;20141231;第42卷(第12期);26-34 * |
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