CN112838586A - Diamond power supply topological structure of diamond power distribution network - Google Patents
Diamond power supply topological structure of diamond power distribution network Download PDFInfo
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- CN112838586A CN112838586A CN202110237728.6A CN202110237728A CN112838586A CN 112838586 A CN112838586 A CN 112838586A CN 202110237728 A CN202110237728 A CN 202110237728A CN 112838586 A CN112838586 A CN 112838586A
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- diamond
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
- H02J3/14—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by switching loads on to, or off from, network, e.g. progressively balanced loading
- H02J3/144—Demand-response operation of the power transmission or distribution network
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/26—Arrangements for eliminating or reducing asymmetry in polyphase networks
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
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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
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
- Y02B70/3225—Demand response systems, e.g. load shedding, peak shaving
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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
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase networks
-
- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
- Y04S20/222—Demand response systems, e.g. load shedding, peak shaving
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention discloses a diamond-shaped power supply topological structure of a diamond-shaped power distribution network, which comprises a transformer substation, a switch station and a ring network station; the two adjacent substations are connected through a backbone network cable, a plurality of main nodes are arranged on the backbone network cable, the main nodes are switching stations with circuit breakers arranged on all incoming and outgoing lines, and the switching stations adopt a double-loop network structure with a double-side power supply 4 loop for power supply and open-loop operation; for each switch station, a secondary network cable is externally connected, a plurality of secondary nodes are arranged on the secondary network cable, the secondary nodes are ring network stations with ring network switches configured on all incoming and outgoing lines, and the ring network stations take the switch stations as a superior power supply to form a single-ring network powered by a single-side power supply or a double-ring network structure powered by a double-side power supply; the main network cables and the sub network cables of two adjacent substations form a diamond distribution network covering a diamond-shaped area. The method can solve the problem of insufficient load balancing capability among the stations caused by different capacities of different transformer substations.
Description
Technical Field
The invention relates to a diamond-shaped power supply topological structure of a diamond-shaped power distribution network, which is used in the field of distribution network planning and design.
Background
The capacity of a single main transformer of a 110kV transformer substation in a distribution network of part of domestic cities is doubled and is larger than that of a 35kV transformer substation, and sites alternate among a large number of 35kV transformer substations. For interconnected substations with the same capacity, the division of the power supply range of the substation generally adopts a rhombic power supply mode, and the boundary of the power supply range of each substation is the center of a rhombic area. The diamond power mode may completely fill a region. However, for interconnected substations with different capacities, the compliance capacity of the 110kv substation is greater than that of the 35kv substation, and the power supply range division mode enables the power supply ranges of the interconnected substations with different capacities to be the same, so that the resource waste of the substation on the side with the large capacity is caused. This will cause a problem of insufficient load balancing capability between stations.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, provides a diamond-shaped power supply topological structure of a diamond-shaped power distribution network, and can solve the problem of insufficient load balancing capability among stations caused by different capacities of different transformer substations.
One technical scheme for achieving the above purpose is as follows: a diamond-shaped power supply topological structure of a diamond-shaped power distribution network comprises a transformer substation, and is characterized by further comprising a switch station and a ring network station;
the two adjacent substations are connected through a backbone network cable, a plurality of main nodes are arranged on the backbone network cable, the main nodes are switching stations with circuit breakers arranged on all incoming and outgoing lines, and the switching stations adopt a double-loop network structure with a double-side power supply 4 loop for power supply and open-loop operation; for each switch station, a secondary network cable is externally connected, a plurality of secondary nodes are arranged on the secondary network cable, the secondary nodes are ring network stations with ring network switches configured on all incoming and outgoing lines, and the ring network stations take the switch stations as a superior power supply to form a single-ring network powered by a single-side power supply or a double-ring network structure powered by a double-side power supply; the main network cables and the sub network cables of two adjacent substations form a diamond distribution network covering a diamond-shaped area.
Furthermore, the transformer substation is connected with a plurality of other transformer substations through the diamond distribution network to form a diamond distribution network topology.
Further, the power supply range between any adjacent substations is subjected to range adjustment through the circuit breakers configured in the switchyard.
Further, the transformer substation is a 35kv transformer substation or a 110kv transformer substation.
Further, the backbone network cable and the secondary network cable are 10kv cables.
Further, the switching station is a 10kv switching station, and the ring website is a 10kv ring website.
The diamond power supply topological structure of the diamond power distribution network can flexibly adjust the load between the stations, so that the load balancing capability between the stations is improved, and the problem of insufficient load balancing capability between the stations caused by different capacities of a 110kV transformer substation and a 35kV transformer substation can be solved.
Drawings
Fig. 1 is a schematic structural diagram of a diamond-shaped power supply topology structure of a diamond-shaped power distribution network according to the present invention;
FIG. 2 is a schematic diagram of an exemplary wiring structure of a diamond-shaped power supply topology of a diamond-shaped power distribution network according to the present invention;
FIG. 3 is a schematic view of the load balancing of the interconnection of a plurality of diamond distribution networks;
FIG. 4 is a schematic diagram of a power supply range of a transformer substation in a diamond power supply mode of a traditional distribution network connection structure;
fig. 5 is a schematic diagram of a power supply range of a transformer substation in a diamond power supply mode of a diamond power supply topological structure of the diamond power distribution network according to the invention.
Detailed Description
In order to better understand the technical solution of the present invention, the following detailed description is made by specific examples:
referring to fig. 1, the diamond-shaped power supply topology structure of the diamond-shaped power distribution network of the present invention is a connection mode for inter-station communication of the medium voltage distribution network and the substation. The 10kV diamond connection mode can realize the inter-station communication among 110kV transformer substations, 35kV transformer substations or between 110kV and 35kV transformer substations, and comprises a transformer substation 1, a switch station 2, a ring network station 3, a backbone network cable 4 and a sub-backbone network cable 5, wherein the transformer substation is a 35kV transformer substation or a 110kV transformer substation, the backbone network cable and the sub-backbone network cable are 10kV cables, the switch station is a 10kV switch station, and the ring network station is a 10kV ring network station.
Two adjacent substations 1 are connected through a backbone network cable 4, a plurality of main nodes are arranged on the backbone network cable 4, the main nodes are switch stations 2 with circuit breakers arranged on all incoming and outgoing lines, and the switch stations adopt a double-loop network structure with a double-side power supply 4 for power supply and open-loop operation. For each switch station 2, a secondary network cable 5 is externally connected, a plurality of secondary nodes are arranged on the secondary network cable 5, the secondary nodes are ring network stations 3 with all incoming and outgoing lines provided with ring network switches, and the ring network stations 3 use the switch stations 2 as a superior power supply to form a single-ring network with power supplied by a single-side power supply or a double-ring network structure with power supplied by two-side power supplies. The backbone cables 4 and the sub-backbone cables 5 of two adjacent substations 1 form a diamond-shaped distribution network covering a diamond-shaped area, a typical wiring configuration of which is shown in fig. 2.
The diamond distribution network wiring mode has the characteristic of flexibly adjusting the load. Because the 10kV backbone network supplies power to four loops of bilateral power supplies of different transformer substations, and all incoming and outgoing lines of the switch stations are provided with the circuit breakers, the number of the switch stations supplied by the different transformer substations can be flexibly adjusted by switching on and off the circuit breakers, the load of the transformer substations is effectively balanced, and the contact rate between the stations reaches 100%. The transformer substation is connected with a plurality of other transformer substations through the diamond distribution network to form a diamond distribution network topology, and a load balance schematic diagram of the diamond distribution network topology is shown in fig. 3.
The division of the power supply range of the transformer substation generally adopts a rhombic power supply mode, and reasonable geometric equivalence is carried out on the power supply range of the transformer substation in the power distribution network, as shown in fig. 4. Considering that regular hexagons with equal sizes can completely fill a region, the power supply range of the substations is equivalent to the regular hexagons with equal areas by taking the substations S1 and S2 as centers, the power supply range of the inter-station communication of the two substations S1 and S2 is equivalent to a rhombic region, namely a shaded part in the figure, and a power supply mode that the rhombic region is used as the power supply range dividing boundary in the inter-station communication region is called a rhombic power supply mode. In the diamond-shaped power supply mode, for the communication between transformer substation stations with the same capacity, the boundary of the power supply range between two transformer substations is located in the center of the diamond-shaped area. If the substation connecting points with different capacities are connected between the substations S1 and S2, respectively, the load imbalance between the substations can be caused if the boundary of the power supply range of each substation in the connecting area between the substations is still at the center of the diamond area.
In the diamond distribution network disclosed by the invention, as the diamond distribution network has the characteristic of flexibly adjusting the load among the stations, the diamond power supply mode is still suitable for the condition of dividing the contact power supply range among the transformer stations with different capacities in the diamond distribution network, as shown in fig. 5. And the power supply range of the contact between the 110kV transformer substation and the 35kV transformer substation is equivalent to a diamond area. Because diamond type distribution network can be in the nimble load of adjusting between the station, according to the condition difference that cuts off and break of circuit breaker, diamond type distribution network transformer substation station contact power supply range's boundary department can adjust in a flexible way under the rhombus power supply mode. The boundary of the power supply range between the two substations is adjusted to the center of the diamond region and slightly deviates to the 35kV substation of S2, and the 35kV substation of S2 has smaller capacity and smaller power supply range than the 110kV substation of S1, so that the method for dividing the power supply range can effectively balance loads of the substations with different capacities and has certain rationality. Therefore, a diamond-shaped power supply mode of the diamond-shaped power distribution network is formed, and the division of the contact power supply range between the transformer substation stations with different capacities is realized.
It should be understood by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as a limitation of the present invention, and that changes and modifications to the above described embodiments are within the scope of the claims of the present invention as long as they are within the spirit and scope of the present invention.
Claims (6)
1. A diamond-shaped power supply topological structure of a diamond-shaped power distribution network comprises a transformer substation, and is characterized by further comprising a switch station and a ring network station;
the two adjacent substations are connected through a backbone network cable, a plurality of main nodes are arranged on the backbone network cable, the main nodes are switching stations with circuit breakers arranged on all incoming and outgoing lines, and the switching stations adopt a double-loop network structure with a double-side power supply 4 loop for power supply and open-loop operation; for each switch station, a secondary network cable is externally connected, a plurality of secondary nodes are arranged on the secondary network cable, the secondary nodes are ring network stations with ring network switches configured on all incoming and outgoing lines, and the ring network stations take the switch stations as a superior power supply to form a single-ring network powered by a single-side power supply or a double-ring network structure powered by a double-side power supply; the main network cables and the sub network cables of two adjacent substations form a diamond distribution network covering a diamond-shaped area.
2. The diamond-shaped power supply topological structure of the diamond-shaped power distribution network according to claim 1, wherein the transformer substation is connected with a plurality of other transformer substations through the diamond-shaped power distribution network to form a diamond-shaped power distribution network topology.
3. A diamond-shaped power supply topology structure of a diamond-shaped power distribution network according to claim 1, wherein the power supply range between any adjacent substations is range-regulated by circuit breakers configured to said switchyard.
4. The diamond-shaped power supply topology structure of the diamond-shaped power distribution network according to claim 1, wherein the substation is a 35kv substation or a 110kv substation.
5. The diamond-shaped power supply topology structure of claim 1, wherein the backbone cable and the sub-backbone cable are 10kv cables.
6. The diamond-shaped power supply topology structure of the diamond-shaped power distribution network as claimed in claim 1, wherein the switching station is a 10kv switching station, and the ring website is a 10kv ring website.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110237728.6A CN112838586A (en) | 2021-03-04 | 2021-03-04 | Diamond power supply topological structure of diamond power distribution network |
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| CN202110237728.6A CN112838586A (en) | 2021-03-04 | 2021-03-04 | Diamond power supply topological structure of diamond power distribution network |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113889985A (en) * | 2021-10-09 | 2022-01-04 | 国网上海市电力公司 | Relay protection system of diamond type electric wire netting |
| CN114221322A (en) * | 2021-11-05 | 2022-03-22 | 国网浙江省电力有限公司嘉兴供电公司 | Honeycomb distribution network system structure |
-
2021
- 2021-03-04 CN CN202110237728.6A patent/CN112838586A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113889985A (en) * | 2021-10-09 | 2022-01-04 | 国网上海市电力公司 | Relay protection system of diamond type electric wire netting |
| CN113889985B (en) * | 2021-10-09 | 2024-03-19 | 国网上海市电力公司 | Relay protection system of diamond type power grid |
| CN114221322A (en) * | 2021-11-05 | 2022-03-22 | 国网浙江省电力有限公司嘉兴供电公司 | Honeycomb distribution network system structure |
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