CN211183418U - 220KV bus differential system - Google Patents
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- CN211183418U CN211183418U CN201921895257.2U CN201921895257U CN211183418U CN 211183418 U CN211183418 U CN 211183418U CN 201921895257 U CN201921895257 U CN 201921895257U CN 211183418 U CN211183418 U CN 211183418U
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Abstract
The utility model discloses a 220KV bus differential system, which is characterized in that a 220KV bus is arranged into a double-bus four-segment bus comprising a first group of buses, a second group of buses and a third group of buses, the first group of buses are arranged into a first bus and a second bus, the second group of buses comprise a third bus and a fourth bus, and the third group of buses comprise a fifth bus and a sixth bus; a main transformer, a standby transformer, a high-voltage power supply branch circuit, an intra-segment bus connection circuit and an inter-segment bus connection circuit are respectively arranged on the first group of buses, the second group of buses and the third group of buses; the technical problems of high operation and maintenance cost and poor power grid stability caused by complex wiring of a power supply power grid in the prior art are solved; the 220KV bus differential system is simple and convenient to connect, low in operation and maintenance cost and high in stability.
Description
Technical Field
The utility model belongs to the technical field of the electric wire netting power supply technique and specifically relates to a 220KV generating line differential system is related to.
Background
With the rapid increase of economy and the continuous expansion of urban scale, in order to meet the power consumption requirements of enterprises and residents in cities, the quality of power supply is ensured, and therefore more high-voltage power grids enter the cities to solve the current power supply problem. The increase of high-voltage power supply grids in cities, the increase of the demand on the power supply capacity in the power grids, the improvement of the requirement on the stability of the power supply grids, and the requirements on the operation modes and the intelligent degree of the power grids are higher and higher.
The technical problems caused by the fact that the high-voltage power supply grid is increased, the power supply capacity requirement capacity is large, and the requirement on stability of the power supply grid is high are solved by changing the operation mode of the power grid and improving the intelligent degree of the power grid, a complex wiring mode is often caused, extra cost is increased for operation and maintenance of the power supply grid due to the complex wiring mode, and the stability of the power supply grid is hardly effectively improved due to the complex wiring mode. Therefore, those skilled in the art need to make necessary improvements to existing power supply grids.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a 220KV bus differential system, which can solve the technical problems of high operation and maintenance cost and poor power grid stability caused by complex wiring of a power supply power grid in the prior art; the 220KV bus differential system is simple and convenient to connect, low in operation and maintenance cost and high in stability.
In a first aspect, an embodiment of the present invention provides a 220KV bus differential system, which includes:
the 220KV bus is a double-bus four-section bus, and the double-bus four-section bus comprises a first group of buses, a second group of buses and a third group of buses;
the first group of buses comprise a first bus and a second bus, the first bus and the second bus are connected through a first bus-coupled circuit breaker, and the first group of buses are provided with at least one first group of bus main transformers and at least one first group of bus high-voltage power supply branch circuit; the at least one first group of bus main transformers are connected with the first bus through a first bus main circuit breaker, the at least one first group of bus main transformers are connected with the second bus through a second bus main circuit breaker, the at least one first group of bus high-voltage power supply branch is connected with the first bus through a first bus branch circuit breaker, and the at least one first group of bus high-voltage power supply branch is connected with the second bus through a second bus branch circuit breaker;
the second group of buses comprise a third bus and a fourth bus, the first bus is connected with the third bus through a first section circuit breaker, the second bus is connected with the fourth bus through a second section circuit breaker, the third bus and the fourth bus are connected through a second bus-connected circuit breaker, and the second group of buses are provided with at least one second group of bus main transformer and at least one second group of bus high-voltage power supply branch circuit; the at least one second group of bus main transformers are connected with the third bus through a third bus main circuit breaker, the at least one second group of bus main transformers are connected with the fourth bus through a fourth bus main circuit breaker, the at least one second group of bus high-voltage power supply branch is connected with the third bus through a third bus branch circuit breaker, and the at least one second group of bus high-voltage power supply branch is connected with the fourth bus through a fourth bus branch circuit breaker;
the third group of buses comprise a fifth bus and a sixth bus, the third bus is connected with the fifth bus through a third section breaker, the fourth bus is connected with the sixth bus through a fourth section breaker, the fifth bus and the sixth bus are connected through a third bus-coupled breaker, and the third group of buses are provided with at least one third group of bus main transformer and at least one third group of bus high-voltage power supply branch circuit; at least one third group bus main transformer passes through fifth bus main transformer circuit breaker with the fifth bus is connected, at least one third group bus main transformer pass through sixth bus main transformer circuit breaker with the sixth bus is connected, at least one third group bus high-voltage power supply branch pass through fifth bus branch circuit breaker with the fifth bus is connected, at least one third group bus high-voltage power supply branch pass through sixth bus branch circuit breaker with the sixth bus is connected.
The utility model discloses 220KV generating line differential system has following beneficial effect at least: the 220KV bus is set to be a double-bus four-section bus comprising a first group of buses, a second group of buses and a third group of buses, the first group of buses is set to comprise a first bus and a second bus, the second group of buses comprises a third bus and a fourth bus, and the third group of buses comprises a fifth bus and a sixth bus; a main transformer, a standby transformer, a high-voltage power supply branch circuit, an intra-segment bus connection circuit and an inter-segment bus connection circuit are respectively arranged on the first group of buses, the second group of buses and the third group of buses; the technical problems of high operation and maintenance cost and poor power grid stability caused by complex wiring of a power supply power grid in the prior art are solved; the 220KV bus differential system is simple and convenient to connect, low in operation and maintenance cost and high in stability.
According to other embodiments of the present invention, the 220KV bus bar differential system, the at least one first set of bus bar main transformers comprises a first main transformer and a second main transformer, a first standby transformer is arranged on the first group of buses, a second standby transformer is arranged on the second group of buses, the first spare transformer is a spare transformer of the first main transformer, the second spare transformer is a spare transformer of the second main transformer, the first spare transformer is connected with the first bus through a first bus spare circuit breaker, the first spare transformer is connected with the second bus through a second bus spare circuit breaker, the second standby transformer is connected with the third bus through a third bus standby breaker, and the second standby transformer is connected with the fourth bus through a fourth bus standby breaker.
According to another embodiment of the present invention, the at least one second group of bus main transformers comprises a third main transformer and a fourth main transformer, and a third spare transformer is disposed on the third group of bus lines, and the third spare transformer is a spare transformer of the third main transformer or the fourth main transformer; the third standby transformer is connected with the fifth bus through a fifth bus standby breaker, and the third standby transformer is connected with the sixth bus through a sixth bus standby breaker.
According to the utility model discloses a 220KV generating line differential system of other embodiments, at least one first group generating line high voltage power supply branch road includes first high voltage power supply branch road and second high voltage power supply branch road, at least one second group generating line high voltage power supply branch road includes third high voltage power supply branch road and fourth high voltage power supply branch road, at least one third group generating line high voltage power supply branch road includes fifth high voltage power supply branch road and sixth high voltage power supply branch road.
According to the 220KV bus differential system of other embodiments of the present invention, the 220KV bus differential system further includes a first bus second bus failure protection screen, a first bus second bus-coupler operation screen, a first main transformer protection screen, a first main transformer relay screen, a second main transformer protection screen, a second main transformer relay screen, a first high-voltage power supply branch protection screen, a second high-voltage power supply branch protection screen, a first backup transformer relay screen, a first bus third bus segment operation screen, a second bus fourth bus segment operation screen; the first bus second bus failure protection screen is respectively connected with the first bus second bus-coupler operation screen, the first main transformer protection screen, the first main transformer relay screen, the second main transformer protection screen, the second main transformer relay screen, the first high-voltage power supply branch protection screen, the second high-voltage power supply branch protection screen, the first standby transformer relay screen, the first bus third bus segmentation operation screen and the second bus fourth bus segmentation operation screen.
According to the 220KV bus differential system of other embodiments of the present invention, the 220KV bus differential system further includes a third bus fourth bus failure protection screen, a third bus fourth bus coupler operation screen, a third transformer protection screen, a third transformer relay screen, a fourth transformer protection screen, a fourth transformer relay screen, a third high-voltage power supply branch protection screen, a fourth high-voltage power supply branch protection screen, a second standby transformer relay screen, a third bus fifth bus segment operation screen, and a fourth bus sixth bus segment operation screen; the third bus fourth bus failure protection screen respectively with third bus fourth bus female gang operation screen third transformer protection screen third transformer relay screen fourth transformer protection screen fourth transformer relay screen third high-voltage power supply branch protection screen the reserve transformer protection screen of second reserve transformer relay screen first bus third bus segmentation operation screen second bus fourth bus segmentation operation screen third bus fifth bus segmentation operation screen fourth bus sixth bus segmentation operation screen is connected.
According to the 220KV bus differential system of other embodiments of the present invention, the 220KV bus differential system further includes a fifth bus sixth bus failure protection screen, a fifth bus sixth bus coupler operation screen, a fifth transformer protection screen, a fifth transformer relay screen, a sixth transformer protection screen, a sixth transformer relay screen, a fifth high-voltage power supply branch protection screen, a sixth high-voltage power supply branch protection screen, a third standby transformer protection screen, and a third standby transformer relay screen; the protection screen for the failure of the sixth bus of the fifth bus is respectively connected with the operation screen for the bus coupling of the sixth bus of the fifth bus, the protection screen for the fifth transformer, the relay screen for the fifth transformer, the protection screen for the sixth transformer, the relay screen for the sixth transformer, the protection screen for the fifth high-voltage power supply branch, the protection screen for the sixth high-voltage power supply branch, the protection screen for the standby transformer, the relay screen for the standby transformer, the operation screen for the fifth bus of the third bus and the operation screen for the sixth bus of the fourth bus are connected.
Drawings
Fig. 1 is a schematic view of a specific embodiment of a bus bar connection structure in a 220KV bus bar differential system according to an embodiment of the present invention;
fig. 2 is a schematic diagram of an embodiment of the present invention, in which the fault protection outlet circuit of the first bus and the second bus in the 220KV bus differential system is connected;
fig. 3 is a schematic diagram of an embodiment of the present invention, in which the fourth bus failure protection outlet circuit of the third bus in the 220KV bus differential system is connected.
Detailed Description
The conception and the resulting technical effects of the present invention will be described clearly and completely with reference to the following embodiments, so that the objects, features and effects of the present invention can be fully understood. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and other embodiments obtained by those skilled in the art without inventive labor based on the embodiments of the present invention all belong to the protection scope of the present invention.
In the description of the embodiments of the present invention, if "a plurality" is referred to, it means one or more, if "a plurality" is referred to, it means two or more, if "greater than", "less than" or "more than" is referred to, it is understood that the number is not included, and if "more than", "less than" or "within" is referred to, it is understood that the number is included. References to "first", "second", "third", etc., are to be understood as being used to distinguish between technical features and are not intended to indicate or imply relative importance or to implicitly indicate a number of indicated technical features or to implicitly indicate a precedence relationship of the indicated technical features.
In the embodiment of the present invention, the 220KV bus of the 220KV bus differential system is a double-bus quarter-section bus, which includes a first group of buses, a second group of buses and a third group of buses. The first group of buses comprise a first bus and a second bus, the first bus and the second bus are connected through a first bus coupler circuit breaker to control the opening and closing of the connection between the first bus and the second bus, at least one first group of bus main transformers and at least one first group of bus high-voltage power supply branch are arranged on the first group of buses, the at least one first group of bus main transformers are connected with the first bus through the first bus main circuit breaker, and the first group of bus main transformers are connected with the second bus through the second bus main circuit breaker, so that the transformer can be connected with the first bus and the second bus, and the stability and the reliability of power supply for the transformer are guaranteed. At least one first group of bus high-voltage power supply branch is connected with the first bus through a first bus branch circuit breaker, and at least one first group of bus high-voltage power supply branch is connected with the second bus through a second bus branch circuit breaker, so that the stability and the reliability of power supply for the first group of bus high-voltage power supply branch are ensured.
The second group of busbars comprises a third busbar and a fourth busbar, the first busbar is connected with the third busbar through a first sectionalizing breaker so that opening and closing of connection between the first busbar and the third busbar can be controlled, and the second busbar is connected with the fourth busbar through a second sectionalizing breaker so that opening and closing of connection between the second busbar and the fourth busbar can be controlled. The third bus and the fourth bus are connected by a second buscouple breaker to control the opening and closing of the connection between the third bus and the fourth bus. At least one second group bus main transformer and at least one second group bus high-voltage power supply branch are arranged on the second group bus, the at least one second group bus main transformer is connected with the third bus through a third bus main transformer breaker, and the second group bus main transformer is connected with the fourth bus through a fourth bus main transformer breaker, so that the transformer can be connected with the third bus and the fourth bus, and the stability and the reliability of power supply for the transformer are guaranteed. At least one second group of bus high-voltage power supply branch is connected with the third bus through a third bus branch circuit breaker, and at least one second group of bus high-voltage power supply branch is connected with the fourth bus through a fourth bus branch circuit breaker, so that the stability and the reliability of power supply for the second group of bus high-voltage power supply branch are ensured.
The third group of buses comprises a fifth bus and a sixth bus, and the third bus is connected with the fifth bus through a third section breaker so that the connection between the third bus and the fifth bus can be controlled to be opened and closed; the fourth busbar is connected to the sixth busbar by a fourth section breaker, so that the opening and closing of the connection between the fourth busbar and the sixth busbar can be controlled. The fifth bus and the sixth bus are connected through a third buscouple breaker to control opening and closing of the connection between the fifth bus and the sixth bus. At least one third group bus main transformer and at least one third group bus high-voltage power supply branch are arranged on the third group bus, the at least one third group bus main transformer is connected with the fifth bus through a fifth bus main transformer breaker, and the third group bus main transformer is connected with the sixth bus through a sixth bus main transformer breaker, so that the transformer can be connected with the fifth bus and the sixth bus, and the stability and the reliability of power supply for the transformer are guaranteed. At least one third group of bus high-voltage power supply branch is connected with the fifth bus through a fifth bus branch circuit breaker, and at least one third group of bus high-voltage power supply branch is connected with the sixth bus through a sixth bus branch circuit breaker, so that the stability and the reliability of power supply for the third group of bus high-voltage power supply branch are ensured.
To sum up, in the embodiment of the present invention, a 220KV bus differential system is configured by setting 220KV buses as double-bus four-segment buses including a first group of buses, a second group of buses and a third group of buses, and setting the first group of buses as including the first buses and the second buses, the second group of buses includes the third buses and the fourth buses, and the third group of buses includes the fifth buses and the sixth buses; a main transformer, a standby transformer, a high-voltage power supply branch circuit, an intra-segment bus connection circuit and an inter-segment bus connection circuit are respectively arranged on the first group of buses, the second group of buses and the third group of buses; the technical problems of high operation and maintenance cost and poor power grid stability caused by complex wiring of a power supply power grid in the prior art are solved; the 220KV bus differential system is simple and convenient to connect, low in operation and maintenance cost and high in stability.
Referring to fig. 1, in some embodiments of the present invention, the at least one first group of bus main transformers includes a first main transformer and a second main transformer, the at least one first group of bus high-voltage power supply branches includes a first high-voltage power supply branch and a second high-voltage power supply branch, and the connection relationship between the first main transformer and the second main transformer and the first bus 1M and the connection relationship between the first main transformer and the second main transformer and the connection relationship between the first bus 1M and the second bus 2M are the same as the connection relationship between the at least one first group of bus main transformers and the first bus 1M and the connection relationship between the first main transformer. The connection relation between the first high-voltage power supply branch and the second high-voltage power supply branch and the first bus 1M and the second bus 2M is the same as the connection relation between the at least one first group of bus high-voltage power supply branch and the first bus 1M and the second bus 2M. Be provided with first spare transformer on the first group bus, be provided with second spare transformer on the second group bus, first spare transformer is the spare transformer of first main transformer, second spare transformer is the spare transformer of second main transformer, first spare transformer passes through first bus spare circuit breaker and is connected with first bus 1M, first spare transformer passes through second bus spare circuit breaker and is connected with second bus 2M, second spare transformer passes through third bus spare circuit breaker and is connected with third bus 3M, second spare transformer passes through fourth bus spare circuit breaker and is connected with fourth bus 4M.
Referring to fig. 1, in some embodiments, the at least one second group of bus main transformers includes a third main transformer and a fourth main transformer, the at least one second group of bus high-voltage power supply branches includes a third high-voltage power supply branch and a fourth high-voltage power supply branch, and the connection relationship between the third main transformer and the fourth main transformer and the third bus 3M and the connection relationship between the third main transformer and the fourth bus 4M are the same as the connection relationship between the at least one second group of bus main transformers and the third bus 3M and the fourth bus 4M. The connection relationship between the third high-voltage power supply branch and the fourth high-voltage power supply branch and the third bus 3M and the connection relationship between the third high-voltage power supply branch and the fourth bus 4M are the same as the connection relationship between the at least one second group of bus high-voltage power supply branch and the third bus 3M and the fourth bus 4M. A third standby transformer is arranged on the third group of buses, and the third standby transformer is a standby transformer of a third main transformer or a fourth main transformer; and the third standby transformer is connected with the fifth bus 5M through a fifth bus standby breaker, and the third standby transformer is connected with the sixth bus 6M through a sixth bus standby breaker.
Referring to fig. 1, in some embodiments, the at least one third group of bus main transformers includes a fifth main transformer and a sixth main transformer, the at least one third group of bus high-voltage power supply branches includes a fifth high-voltage power supply branch and a sixth high-voltage power supply branch, the connection relationship between the fifth main transformer and the sixth main transformer and the fifth bus 5M and the sixth bus 6M can refer to the connection relationship between the first high-voltage power supply branch and the second high-voltage power supply branch and the first bus 1M and the second bus 2M, and the connection relationship between the fifth high-voltage power supply branch and the sixth high-voltage power supply branch and the fifth bus 5M and the sixth bus 6M can refer to. The first high-voltage power supply branch and the second high-voltage power supply branch are connected with the first bus 1M and the second bus 2M.
Referring to fig. 2, in some embodiments, the 220KV bus differential system further includes a first bus second bus failure protection screen, a first bus second bus buscouple operation screen, a first main transformer protection screen, a first main transformer relay screen, a second main transformer protection screen, a second main transformer relay screen, a first high-voltage power supply branch protection screen, a second high-voltage power supply branch protection screen, a first backup transformer relay screen, a first bus third bus segment operation screen, a second bus fourth bus segment operation screen; wherein, the malfunctioning protection screen of first generating line second generating line is female with first generating line second generating line female connection operation screen respectively, first main transformer protection screen, first main transformer relay screen, second main transformer protection screen, second main transformer relay screen, first high-pressure power supply branch road protection screen, second high-pressure power supply branch road protection screen, first reserve transformer relay screen, first generating line third generating line segmentation operation screen, second generating line fourth generating line segmentation operation screen is connected, through being provided with the malfunctioning protection screen of first generating line second generating line, and then control first generating line, second generating line and the equipment switch who has the relation of connection with first generating line, second generating line, strengthened the utility model discloses 220KV generating line differential system's stability and reliability have improved the centralized control performance of system simultaneously.
Referring to fig. 3, in some embodiments, the 220KV bus differential system further includes a third bus fourth bus failure protection screen, a third bus fourth bus buscouple operation screen, a third transformer protection screen, a third transformer relay screen, a fourth transformer protection screen, a fourth transformer relay screen, a third high-voltage power supply branch protection screen, a fourth high-voltage power supply branch protection screen, a second standby transformer relay screen, a third bus fifth bus segment operation screen, and a fourth bus sixth bus segment operation screen; the third bus fourth bus failure protection screen is respectively connected with the third bus fourth bus-coupler operation screen, the third transformer protection screen, the third transformer relay screen, the fourth transformer protection screen, the fourth transformer relay screen, the third high-voltage power supply branch protection screen, the fourth high-voltage power supply branch protection screen, the second standby transformer relay screen, the first bus third bus sectional operation screen, the second bus fourth bus sectional operation screen, the third bus fifth bus sectional operation screen and the fourth bus sixth bus sectional operation screen; through being provided with the malfunctioning protection screen of third generating line fourth generating line, and then control third generating line, fourth generating line and have the equipment switch of relation of connection with third generating line, fourth generating line, strengthened the utility model discloses 220KV generating line differential system's stability and reliability have improved the centralized control performance of system simultaneously.
In addition, in some embodiments, the 220KV bus differential system further includes a fifth bus sixth bus failure protection screen, a fifth bus sixth bus buscouple operation screen, a fifth transformer protection screen, a fifth transformer relay screen, a sixth transformer protection screen, a sixth transformer relay screen, a fifth high-voltage power supply branch protection screen, a sixth high-voltage power supply branch protection screen, a third backup transformer protection screen, and a third backup transformer relay screen; the protection screen for the failure of the sixth bus of the fifth bus is respectively connected with a fifth bus sixth bus coupler operation screen, a fifth transformer protection screen, a fifth transformer relay screen, a sixth transformer protection screen, a sixth transformer relay screen, a fifth high-voltage power supply branch protection screen, a sixth high-voltage power supply branch protection screen, a third standby transformer relay screen, a third bus fifth bus sectional operation screen and a fourth bus sixth bus sectional operation screen; through being provided with the malfunctioning protection screen of fifth generating line sixth generating line, and then control fifth generating line, sixth generating line and have the equipment switch of relation of connection with fifth generating line, sixth generating line, strengthened the utility model discloses 220KV generating line differential system's stability and reliability have improved the centralized control performance of system simultaneously.
It should be noted that, the embodiment of the utility model provides a related first female circuit breaker that allies oneself with, first generating line main circuit breaker, second generating line main circuit breaker, first generating line branch circuit breaker, first segmentation circuit breaker, second segmentation circuit breaker, the second female circuit breaker that allies oneself with, third generating line main circuit breaker, fourth generating line main circuit breaker, third generating line branch circuit breaker, fourth generating line branch circuit breaker, third segmentation circuit breaker, fourth segmentation circuit breaker, the third female circuit breaker that allies oneself with, fifth generating line main circuit breaker, sixth generating line main circuit breaker, fifth generating line branch circuit breaker, all kinds of circuit breakers such as sixth generating line branch circuit breaker are the circuit breaker in the power supply grid, its model specifically can carry out the apolegamy according to practical application's scene.
To sum up, the 220KV busbar differential system of the embodiment of the present invention sets the 220KV busbar to be the double-busbar four-segment busbar including the first group of busbars, the second group of busbars and the third group of busbars, and sets the first group of busbars to include the first busbar and the second busbar, the second group of busbars includes the third busbar and the fourth busbar, and the third group of busbars includes the fifth busbar and the sixth busbar; a main transformer, a standby transformer, a high-voltage power supply branch circuit, an intra-segment bus connection circuit and an inter-segment bus connection circuit are respectively arranged on the first group of buses, the second group of buses and the third group of buses; the technical problems of high operation and maintenance cost and poor power grid stability caused by complex wiring of a power supply power grid in the prior art are solved; the 220KV bus differential system is simple and convenient to connect, low in operation and maintenance cost and high in stability.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art. Furthermore, the embodiments of the present invention and features of the embodiments may be combined with each other without conflict.
Claims (7)
1. The 220KV bus differential system is characterized in that the 220KV bus is a double-bus four-segment bus, and the double-bus four-segment bus comprises a first group of buses, a second group of buses and a third group of buses;
the first group of buses comprise a first bus and a second bus, the first bus and the second bus are connected through a first bus-coupled circuit breaker, and the first group of buses are provided with at least one first group of bus main transformers and at least one first group of bus high-voltage power supply branch circuit; the at least one first group of bus main transformers are connected with the first bus through a first bus main circuit breaker, the at least one first group of bus main transformers are connected with the second bus through a second bus main circuit breaker, the at least one first group of bus high-voltage power supply branch is connected with the first bus through a first bus branch circuit breaker, and the at least one first group of bus high-voltage power supply branch is connected with the second bus through a second bus branch circuit breaker;
the second group of buses comprise a third bus and a fourth bus, the first bus is connected with the third bus through a first section circuit breaker, the second bus is connected with the fourth bus through a second section circuit breaker, the third bus and the fourth bus are connected through a second bus-connected circuit breaker, and the second group of buses are provided with at least one second group of bus main transformer and at least one second group of bus high-voltage power supply branch circuit; the at least one second group of bus main transformers are connected with the third bus through a third bus main circuit breaker, the at least one second group of bus main transformers are connected with the fourth bus through a fourth bus main circuit breaker, the at least one second group of bus high-voltage power supply branch is connected with the third bus through a third bus branch circuit breaker, and the at least one second group of bus high-voltage power supply branch is connected with the fourth bus through a fourth bus branch circuit breaker;
the third group of buses comprise a fifth bus and a sixth bus, the third bus is connected with the fifth bus through a third section breaker, the fourth bus is connected with the sixth bus through a fourth section breaker, the fifth bus and the sixth bus are connected through a third bus-coupled breaker, and the third group of buses are provided with at least one third group of bus main transformer and at least one third group of bus high-voltage power supply branch circuit; at least one third group bus main transformer passes through fifth bus main transformer circuit breaker with the fifth bus is connected, at least one third group bus main transformer pass through sixth bus main transformer circuit breaker with the sixth bus is connected, at least one third group bus high-voltage power supply branch pass through fifth bus branch circuit breaker with the fifth bus is connected, at least one third group bus high-voltage power supply branch pass through sixth bus branch circuit breaker with the sixth bus is connected.
2. The 220KV bus differential system of claim 1, wherein the at least one first set of bus main transformers comprises a first main transformer and a second main transformer, a first standby transformer is arranged on the first group of buses, a second standby transformer is arranged on the second group of buses, the first spare transformer is a spare transformer of the first main transformer, the second spare transformer is a spare transformer of the second main transformer, the first spare transformer is connected with the first bus through a first bus spare circuit breaker, the first spare transformer is connected with the second bus through a second bus spare circuit breaker, the second standby transformer is connected with the third bus through a third bus standby breaker, and the second standby transformer is connected with the fourth bus through a fourth bus standby breaker.
3. The 220KV bus differential system of claim 2, wherein the at least one second set of bus main transformers comprises a third main transformer and a fourth main transformer, wherein a third spare transformer is disposed on the third set of buses, and the third spare transformer is a spare transformer of the third main transformer or the fourth main transformer; the third standby transformer is connected with the fifth bus through a fifth bus standby breaker, and the third standby transformer is connected with the sixth bus through a sixth bus standby breaker.
4. The 220KV bus differential system of claim 3, wherein the at least one first set of bus high-voltage power supply branches comprises a first high-voltage power supply branch and a second high-voltage power supply branch, the at least one second set of bus high-voltage power supply branches comprises a third high-voltage power supply branch and a fourth high-voltage power supply branch, and the at least one third set of bus high-voltage power supply branches comprises a fifth high-voltage power supply branch and a sixth high-voltage power supply branch.
5. The 220KV bus differential system according to claim 4, wherein the 220KV bus differential system further comprises a first bus second bus failure protection screen, a first bus second bus buscouple operation screen, a first main transformer protection screen, a first main transformer relay screen, a second main transformer protection screen, a second main transformer relay screen, a first high-voltage power supply branch protection screen, a second high-voltage power supply branch protection screen, a first standby transformer relay screen, a first bus third bus segment operation screen, a second bus fourth bus segment operation screen; the first bus second bus failure protection screen is respectively connected with the first bus second bus-coupler operation screen, the first main transformer protection screen, the first main transformer relay screen, the second main transformer protection screen, the second main transformer relay screen, the first high-voltage power supply branch protection screen, the second high-voltage power supply branch protection screen, the first standby transformer relay screen, the first bus third bus segmentation operation screen and the second bus fourth bus segmentation operation screen.
6. The 220KV bus differential system according to claim 5, wherein the 220KV bus differential system further comprises a third bus fourth bus failure protection screen, a third bus fourth bus buscouple operation screen, a third transformer protection screen, a third transformer relay screen, a fourth transformer protection screen, a fourth transformer relay screen, a third high-voltage power supply branch protection screen, a fourth high-voltage power supply branch protection screen, a second standby transformer relay screen, a third bus fifth bus segment operation screen, and a fourth bus sixth bus segment operation screen; the third bus fourth bus failure protection screen respectively with third bus fourth bus female gang operation screen third transformer protection screen third transformer relay screen fourth transformer protection screen fourth transformer relay screen third high-voltage power supply branch protection screen the reserve transformer protection screen of second reserve transformer relay screen first bus third bus segmentation operation screen second bus fourth bus segmentation operation screen third bus fifth bus segmentation operation screen fourth bus sixth bus segmentation operation screen is connected.
7. The 220KV bus differential system of claim 6, wherein the 220KV bus differential system further comprises a fifth bus sixth bus failure protection screen, a fifth bus sixth bus buscouple operation screen, a fifth transformer protection screen, a fifth transformer relay screen, a sixth transformer protection screen, a sixth transformer relay screen, a fifth high-voltage power supply branch protection screen, a sixth high-voltage power supply branch protection screen, a third backup transformer protection screen, and a third backup transformer relay screen; the protection screen for the failure of the sixth bus of the fifth bus is respectively connected with the operation screen for the bus coupling of the sixth bus of the fifth bus, the protection screen for the fifth transformer, the relay screen for the fifth transformer, the protection screen for the sixth transformer, the relay screen for the sixth transformer, the protection screen for the fifth high-voltage power supply branch, the protection screen for the sixth high-voltage power supply branch, the protection screen for the standby transformer, the relay screen for the standby transformer, the operation screen for the fifth bus of the third bus and the operation screen for the sixth bus of the fourth bus are connected.
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| CN201921895257.2U CN211183418U (en) | 2019-11-05 | 2019-11-05 | 220KV bus differential system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119171509A (en) * | 2023-12-28 | 2024-12-20 | 佛山电力设计院有限公司 | 35kV voltage level large load power supply system and substation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119171509A (en) * | 2023-12-28 | 2024-12-20 | 佛山电力设计院有限公司 | 35kV voltage level large load power supply system and substation |
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