CN218829119U - Coordination operation topology of low-voltage power distribution area flexible interconnection device - Google Patents
Coordination operation topology of low-voltage power distribution area flexible interconnection device Download PDFInfo
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- CN218829119U CN218829119U CN202222960812.3U CN202222960812U CN218829119U CN 218829119 U CN218829119 U CN 218829119U CN 202222960812 U CN202222960812 U CN 202222960812U CN 218829119 U CN218829119 U CN 218829119U
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/60—Arrangements for transfer of electric power between AC networks or generators via a high voltage DC link [HVCD]
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Abstract
The utility model discloses a flexible interconnection device coordinated operation topology in low pressure distribution block, include: two groups of coordinated operation units; the method comprises the following steps: the power distribution area, the flexible interconnection device, the flexible interconnection coordination control device and the flexible interconnection device direct current interconnection bus; the distribution transformer substation comprises a distribution transformer substation alternating current high-voltage side line, a distribution transformer substation step-down transformer and a distribution transformer substation alternating current low-voltage side bus; the flexible interconnection coordination control devices in the two groups of coordination operation units are connected through a second communication channel; and the flexible interconnected direct current bus is connected with the flexible interconnection device. The utility model discloses simple structure, the thinking is clear and definite, has characteristics such as integrated level height, measurement accuracy height and platform district data sharing real-time strong, has higher interactivity, cooperativeness in low pressure platform district is used.
Description
Technical Field
The utility model relates to a low pressure distribution station power management field, in particular to flexible interconnection device coordinated operation topology in low pressure distribution station.
Background
With the continuous rising of the proportion of new energy in China, the total amount and proportion of wind power and photovoltaic installed energy are kept rapidly increasing for many years, the permeability of the new energy is continuously increased, a large proportion of the new energy is connected to the grid at a low-voltage side, the trend of a traditional power distribution network is disordered, on the other hand, the maximum load condition at the present stage is considered more in the capacity design of a power distribution area, and when load capacity increase or seasonal capacity increase occurs, the high-load-rate operation condition of a transformer in the power distribution area occurs.
In the embodiment, from the viewpoints of dynamic load transformation of a power distribution area, distributed photovoltaic access and the like, a coordinated operation topology of a low-voltage power distribution area flexible interconnection device is designed, the load rate between areas is dynamically adjusted, meanwhile, the information sharing capacity between areas is increased, the function of local automatic coordinated operation between areas is realized, the calculated amount of a main station is reduced, the operation and maintenance workload is reduced, and the operation quality of a power distribution automatic system is improved.
SUMMERY OF THE UTILITY MODEL
Based on the technical problem, the utility model aims to provide a flexible interconnection device coordinated operation topology in low voltage distribution station district, its simple structure, the thinking is clear and definite, through increasing the information sharing ability between many distribution station districts, has realized the purpose of automatic coordinated operation on the spot.
In order to achieve the above object, the utility model provides a following technical scheme:
a low voltage distribution substation flexible interconnect device coordinated operation topology, comprising:
two groups of coordinated operation units;
the coordinated operation unit includes: the power distribution area, the flexible interconnection device, the flexible interconnection coordination control device and the flexible interconnection device direct current interconnection bus;
the distribution transformer substation comprises a distribution transformer substation alternating current high-voltage side line, a distribution transformer substation step-down transformer and a distribution transformer substation alternating current low-voltage side bus;
the flexible interconnection coordination control device further comprises: the system comprises a three-communication port module, a power acquisition module, a power calculation module and a coordination control module; a current transformer and a voltage transformer in a distribution area alternating-current high-voltage side line of the distribution area are connected to a power acquisition module in the flexible interconnection cooperative control device;
the flexible interconnection coordination control devices in the two groups of coordination operation units are connected through a second communication channel; and the flexible interconnected direct current bus is connected with the flexible interconnection device.
Preferably, a rectifying and inverting bidirectional power transmission unit is arranged on the flexible interconnection device.
Preferably, the design capacity of the flexible interconnection device is determined by the transformer and the load of the power distribution substation.
Preferably, the flexible interconnection coordination control device is provided with a four-communication port module, and the flexible interconnection coordination control device is provided with three communication ports, namely a first communication port, a second communication port and a third communication port.
Preferably, the flexible interconnection coordination control device is connected with the flexible interconnection device through the first communication port.
Preferably, the second communication port and the third communication port are optical fiber communication ports and are connected with a ring network communication unit, so that a ring network communication function of the flexible interconnection coordination control device between the two power distribution stations is realized.
Preferably, the power acquisition module, the power calculation module and the coordination control module in the flexible interconnection coordination control device use a built-in analog acquisition loop, a power algorithm unit and a coordination control algorithm unit, and the coordination control algorithm unit is connected with the second communication port and the third communication port.
Preferably, during the connection between the flexible interconnected dc bus and the flexible interconnection device, specifically, the dc side end of the flexible interconnection device is interconnected through the flexible interconnected dc bus.
Preferably, the power carried by the flexible interconnection direct current bus bar conforms to the flexible interconnection device with small capacity deployed in the power distribution station area.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model provides a flexible interconnection coordinated control device is an integrated device, and the integrated level is high, characteristics such as measurement accuracy height and platform district data sharing real-time strong, has higher interactivity, cooperativity in low pressure platform district is used.
2. The utility model discloses simple structure, the thinking is clear and definite, through increasing the information sharing ability between the many distribution boards section, has realized the purpose of automatic operation in coordination on the spot, has reduced the calculation volume of distribution automation master station system on the one hand, reduces master station system operation load rate, and on the other hand has reduced flexible interconnected system and has inserted distribution automation's access work load and later stage fortune dimension work load, has fine application prospect.
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 embodiments or the technical solutions in 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 for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic diagram of a topology of coordinated operation of a flexible interconnection apparatus in a low-voltage distribution substation area disclosed in this embodiment.
In the figure: the power distribution area alternating-current high-voltage side circuit 1, the power distribution area step-down transformer 2, the power distribution area alternating-current low-voltage side bus 3, the flexible interconnection device 4, the flexible interconnection coordination control device 5, the flexible interconnection device direct-current interconnection bus 6, the first communication channel 45 and the second communication channel 55.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, the present invention provides a technical solution:
a low voltage distribution substation flexible interconnect device coordinated operation topology, comprising:
two groups of coordinated operation units;
the coordinated operation unit includes: the power distribution area, the flexible interconnection device 4, the flexible interconnection coordination control device 5 and the flexible interconnection device direct current interconnection bus 6; the distribution transformer substation comprises a distribution transformer substation alternating current high-voltage side line 1, a distribution transformer substation step-down transformer 2 and a distribution transformer substation alternating current low-voltage side bus 3;
the flexible interconnection coordination control device 5 further includes: the system comprises a three-communication port module, a power acquisition module, a power calculation module and a coordination control module; a current transformer and a voltage transformer in a distribution area alternating-current high-voltage side circuit 1 of a distribution area are connected to a power acquisition module in a flexible interconnection coordination control device 5; the power distribution area is an acquisition object of the flexible interconnection coordination control device 5, and the acquisition object comprises original signals of voltage and current of the alternating-current high-voltage side line 1 of the power distribution area. The flexible interconnection device 4 is provided with a rectification and inversion bidirectional power transmission unit, so that the flexible interconnection device 4 has rectification and inversion bidirectional power transmission functions, and the monomer capacities of the flexible interconnection device 4 can be different.
The flexible interconnection device 4 and the flexible interconnection coordination control device 5 are connected through a first communication channel 45, and the flexible interconnection coordination control devices 5 in the two groups of coordination operation units are connected through a second communication channel 55; the flexible interconnecting direct current bus is connected with the flexible interconnecting device 4. And the direct-current power exchange of the flexible interconnection device 4 is realized, and the design of the bearing power of the direct-current bus is designed according to the flexible interconnection device 4 with smaller capacity arranged in the power distribution station area.
The power distribution area is an acquisition object of the flexible interconnection coordination control device 5, and the acquisition object includes original signals of voltage and current of the alternating high-voltage side line 1 of the power distribution area, which means that a voltage transformer PT and a current transformer CT of the alternating high-voltage side line 1 of the power distribution area are connected to a power acquisition module of the flexible interconnection coordination control device 5, such as a CP5 in fig. 1, and include a parallel voltage transformer PT and a series current transformer CT. The utility model discloses simple structure, the thinking is clear and definite, through increasing the information sharing ability between the many distribution boards section, has realized the purpose of automatic operation in coordination on the spot, has reduced the calculation volume of distribution automation master station system on the one hand, reduces master station system operation load rate, and on the other hand has reduced flexible interconnected system and has inserted distribution automation's access work load and later stage fortune dimension work load, has fine application prospect.
The flexible interconnection device 4 is provided with a rectification and inversion bidirectional power transmission unit, so that the flexible interconnection device 4 has rectification and inversion bidirectional power transmission functions, wherein rectification refers to rectification of an alternating current side signal into a direct current side signal, and inversion refers to rectification of a direct current signal into an alternating current signal. The individual capacities of the flexible interconnection devices 4 may be different, which means that the design capacities of the flexible interconnection devices 4 disposed under the two power distribution areas may be the same or different, and the design capacities are determined by the transformers and the loads of the power distribution areas. The design capacity of the flexible interconnect 4 is determined by the transformer and the load of the distribution bay.
In this embodiment, the flexible interconnection coordination control device 5 is provided with a four-communication port module, and the flexible interconnection coordination control device 5 is provided with three communication ports, namely a first communication port, a second communication port and a third communication port. The flexible interconnection coordination control device 5 is connected with the flexible interconnection device 4 through a first communication port. The state information acquisition function of the flexible interconnection device 4 is realized. The second communication port and the third communication port are optical fiber communication ports, and are connected to a ring network communication unit, so that a ring network communication function of the flexible interconnection coordination control device 5 between the two power distribution station sections is realized, as shown by 55 in fig. 1, and a function of information sharing between the power distribution station sections is realized.
In this embodiment, the power acquisition module, the power calculation module and the coordination control module in the flexible interconnection coordination control device 5 use a built-in analog acquisition loop, a power algorithm unit and a coordination control algorithm unit, and the coordination control algorithm unit is connected to the second communication port and the third communication port.
As shown in fig. 1, in the connection of the flexible interconnection dc bus and the flexible interconnection device 4, specifically, the dc side end of the flexible interconnection device 4 is interconnected through the flexible interconnection dc bus. The power carrying capacity of the flexible interconnecting direct current bus corresponds to the flexible interconnecting device 4 with small capacity deployed in the power distribution station area.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (9)
1. A topology for coordinated operation of low voltage distribution substation flexible interconnection devices, comprising:
two groups of coordinated operation units;
the coordinated operation unit includes: the power distribution system comprises a power distribution area, a flexible interconnection device (4), a flexible interconnection coordination control device (5) and a flexible interconnection device direct current interconnection bus (6);
the distribution transformer substation comprises a distribution transformer substation alternating current high-voltage side line (1), a distribution transformer substation step-down transformer (2) and a distribution transformer substation alternating current low-voltage side bus (3);
the flexible interconnection coordination control device (5) further comprises: the system comprises a three-communication port module, a power acquisition module, a power calculation module and a coordination control module; a current transformer and a voltage transformer in a distribution area alternating-current high-voltage side line (1) of the distribution area are connected into a power acquisition module in the flexible interconnection coordination control device (5);
the flexible interconnection device (4) is connected with the flexible interconnection coordination control device (5) through a first communication channel (45), and the flexible interconnection coordination control devices (5) in the two groups of coordination operation units are connected through a second communication channel (55); and the flexible interconnected direct current bus is connected with the flexible interconnection device (4).
2. The topology of claim 1, wherein the flexible interconnection means (4) is provided with a rectifying and inverting bidirectional power transmission unit.
3. A low voltage distribution substation flexible interconnection device coordinated operation topology according to claim 1, characterized in that the design capacity of the flexible interconnection device (4) is determined by the transformer and the load of the distribution substation.
4. The topology of claim 1, wherein the flexible interconnection coordination control device (5) is provided with a four-communication port module, and the flexible interconnection coordination control device (5) is provided with three communication ports, namely a first communication port, a second communication port and a third communication port.
5. A low voltage distribution substation flexible interconnection device coordinated operation topology according to claim 4, characterized in that, the flexible interconnection coordination control device (5) is connected with the flexible interconnection device (4) through the first communication port.
6. The coordination operation topology of the flexible interconnection device of the low-voltage distribution substation according to claim 4, wherein the second communication port and the third communication port are optical fiber communication ports, and are connected with a ring network communication unit to realize a ring network communication function of the flexible interconnection coordination control device (5) between two distribution substations.
7. The coordinated operation topology of the flexible interconnection device in the low-voltage distribution substation area according to claim 1, wherein the power collection module, the power calculation module and the coordination control module in the flexible interconnection coordination control device (5) use a built-in analog quantity collection loop, a power algorithm unit and a coordination control algorithm unit, and the coordination control algorithm unit is connected to the second communication port and the third communication port.
8. The topology of claim 1, wherein the flexible interconnection dc bus is connected to a flexible interconnection device (4), in particular, a dc side of the flexible interconnection device (4) is interconnected by the flexible interconnection dc bus.
9. A topology according to claim 8, characterized in that the power carrying capacity of the flexible interconnected DC bus conforms to the flexible interconnection device (4) with small capacity deployed in the distribution substation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222960812.3U CN218829119U (en) | 2022-11-08 | 2022-11-08 | Coordination operation topology of low-voltage power distribution area flexible interconnection device |
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| CN202222960812.3U CN218829119U (en) | 2022-11-08 | 2022-11-08 | Coordination operation topology of low-voltage power distribution area flexible interconnection device |
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