CN219627369U - Net hanging test operation system - Google Patents
Net hanging test operation system Download PDFInfo
- Publication number
- CN219627369U CN219627369U CN202223205296.XU CN202223205296U CN219627369U CN 219627369 U CN219627369 U CN 219627369U CN 202223205296 U CN202223205296 U CN 202223205296U CN 219627369 U CN219627369 U CN 219627369U
- Authority
- CN
- China
- Prior art keywords
- interval
- grid
- equipment
- area
- main transformer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
Abstract
The utility model discloses a net hanging test operation system, which comprises a first equipment area, a second equipment area, a third equipment area and a first transformation unit; the whole grid-hanging test operation system is connected with an external power grid system only through the first equipment area, so that the first equipment area is used as the only high-voltage power supply of the whole grid-hanging test operation system, the grid-hanging test operation system is isolated from the power grid system, and even if serious power faults occur in the first equipment area, the second equipment area or the third equipment area, the grid-hanging test operation system can be disconnected from the external power grid system by cutting off the connection between the first equipment area and the external power grid system, so that the influence on the external power grid system is avoided; the first equipment area, the second equipment area and the third equipment area with different voltage levels are arranged to meet the screen test operation requirements of different screen hanging equipment, and the equipment areas with different voltage levels are integrated, so that centralized management of different screen hanging equipment can be realized.
Description
Technical Field
The utility model relates to the technical field of power systems, in particular to a net hanging test operation system.
Background
The newly developed power equipment in the current power system is required to be connected into the main power system for grid test operation, so that the stability of the power equipment in actual use is tested, for example, a novel circuit breaker is connected into the main power system for testing the working effect of the power equipment, the novel power equipment is that grid equipment is related to a plurality of different voltage levels during grid operation, the areas of the existing grid place are scattered, the grid places with different voltage levels are not concentrated, the grid place meeting the corresponding grid conditions is required to be searched for by the different grid equipment, the grid period is long, the grid test operation is carried out by the grid equipment with different voltage levels difficultly in a single grid place, in addition, the reliability of the existing grid place is low, and if the grid equipment fails during the test operation, the whole power grid system is seriously affected.
It can be seen that there is a need for improvements and improvements in the art.
Disclosure of Invention
In view of the shortcomings of the prior art, the utility model aims to provide a net hanging test operation system which is provided with a plurality of equipment areas with different voltage levels and meets the net hanging test operation requirements of different net hanging equipment.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the grid-hanging test operation system comprises a first equipment area, a second equipment area, a third equipment area and a first voltage transformation unit, wherein the first voltage transformation unit is provided with a high voltage side, a medium voltage side and a low voltage side, the first equipment area is connected with the high voltage side of the first voltage transformation unit, the second equipment area is connected with the medium voltage side of the first voltage transformation unit, and the third equipment area is connected with the low voltage side of the first voltage transformation unit; the first device area is configured to connect to an external power grid system and to supply power to the second device area and the third device area.
In the net hanging test operation system, the net hanging test operation system further comprises a fifth equipment area, the fifth equipment area is connected with the second equipment area through a second voltage transformation unit, and the third equipment area is connected with the fifth equipment area through a fourth equipment area.
In the on-grid commissioning system, the voltage levels of the first device region, the second device region and the third device region are gradually reduced.
In the net-hanging test operation system, the first equipment area comprises an outgoing line interval, a first main transformer incoming line interval and a first net-hanging interval, the outgoing line interval, the first main transformer incoming line interval and one end of the first net-hanging interval are connected through a first bus, the first main transformer incoming line interval and the other end of the first net-hanging interval are connected through a first connecting conductor, a first switch unit is arranged between the first main transformer incoming line interval and the first connecting conductor, a second switch unit is arranged between the first net-hanging interval and the first connecting conductor, a first power supply end is arranged on the first main transformer incoming line interval, and the first power supply end is connected with a high-voltage side of the first voltage transformation unit.
In the grid-hung test operation system, the first equipment area further comprises a first charging interval, and two ends of the first charging interval are respectively connected with the first bus and the first contact conductor.
In the grid-hanging test operation system, the second equipment area comprises a second main transformer wire inlet interval and a second grid-hanging interval, one ends of the second main transformer wire inlet interval and the second grid-hanging interval are connected through a second bus, the other ends of the second main transformer wire inlet interval and the second grid-hanging interval are connected through a second connecting conductor, a third switching unit is arranged between the second main transformer wire inlet interval and the second connecting conductor, and a fourth switching unit is arranged between the second grid-hanging interval and the second connecting conductor; the second equipment area further comprises a main transformer middle interval, and the second bus is connected with the medium voltage side of the first voltage transformation unit through the main transformer middle interval.
In the network-hung test operation system, the second equipment area further comprises a second charging interval, and two ends of the second charging interval are respectively connected with the second bus and the second connecting conductor.
In the grid-hanging test operation system, a second power supply end is arranged on the second main transformer wire inlet interval, the second power supply end is connected with the high-voltage side of the second transformer unit, and the low-voltage side of the second transformer unit is connected with the fifth equipment area.
In the grid-hanging test operation system, the third equipment area comprises a plurality of first lower intervals, the first lower intervals are connected through a third bus, and the third bus is connected with the low-voltage side of the first transformation unit.
In the grid-hanging test operation system, the fifth equipment area comprises a plurality of second lower intervals, the second lower intervals are connected through a fourth bus, the fourth bus is connected with the low-voltage side of the second voltage transformation unit, and the fourth bus is connected with the third bus in series.
The beneficial effects are that:
the utility model provides a net hanging test operation system, which is characterized in that the whole net hanging test operation system is connected with an external power grid system only through a first equipment area, so that the first equipment area is used as the only high-voltage power supply of the whole net hanging test operation system, the net hanging test operation system is isolated from the external power grid system, even if serious power faults occur in the first equipment area, the second equipment area or the third equipment area, the net hanging test operation system can be disconnected from the external power grid system by disconnecting the first equipment area from the external power grid system, and the influence on the external power grid system is avoided; in addition, through setting up a plurality of first equipment areas, second equipment area and the third equipment area that have different voltage levels and satisfying the net test operation demand of the net equipment of different hanging to integrate the equipment area of different voltage levels, make different net equipment can realize centralized management.
Drawings
FIG. 1 is a schematic diagram of a connection structure of a net hanging test run system provided by the utility model;
fig. 2 is a system block diagram of the network-hanging commissioning system provided by the present utility model.
Description of main reference numerals: 1-first equipment area, 11-outlet interval, 12-first charging interval, 13-first main transformer inlet interval, 14-first grid interval, 15-first bus bar, 16-first connecting conductor, 17-first switching unit, 18-second switching unit, 19-main transformer middle interval, 131-first power supply end, 2-second equipment area, 21-second charging interval, 22-second main transformer inlet interval, 23-second grid interval, 24-second bus bar, 25-second connecting conductor, 26-third switching unit, 27-fourth switching unit, 221-second power supply end, 3-third equipment area, 31-first transformer interval, 32-third bus bar, 4-first voltage transformation unit, 5-fifth equipment area, 51-second transformer interval, 52-fourth bus bar, 6-second voltage transformation unit, 7-grid system, 8-fourth equipment area.
Detailed Description
The utility model provides a net hanging test operation system, which is used for making the purpose, the technical scheme and the effect of the utility model clearer and more definite, and the utility model is further described in detail below by referring to the attached drawings and the embodiment. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
In the description of the present utility model, it should be understood that the azimuth or positional relationship indicated by the terms "middle", "inside", "outside", etc. are the azimuth or positional relationship of the present utility model based on the drawings, and are merely for convenience of description of the present utility model and simplification of the description. In addition, the terms "first," "second," "third," are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated.
Referring to fig. 1 to 2, the present utility model provides a net hanging test operation system, which includes a first equipment area 1, a second equipment area 2, a third equipment area 3 and a first voltage transformation unit 4, wherein the first voltage transformation unit 4 is provided with a high voltage side, a medium voltage side and a low voltage side, the first equipment area 1 is connected with the high voltage side of the first voltage transformation unit 4, the second equipment area 2 is connected with the medium voltage side of the first voltage transformation unit 4, and the third equipment area 3 is connected with the low voltage side of the first voltage transformation unit 4; the first device area 1 is used for connecting to an external grid system 7 and supplying power to the second device area 2 and the third device area 3.
In actual use, the whole grid-hung test operation system is connected with the power grid system 7 only through the first equipment area 1, so that the first equipment area 1 is used as the only high-voltage power supply of the whole grid-hung test operation system, the grid-hung test operation system is isolated from the power grid system 7, and even if serious power faults occur in the first equipment area 1, the second equipment area 2 or the third equipment area 3, the grid-hung test operation system can be disconnected from the external power grid system 7 by disconnecting the first equipment area 1 from the external power grid system 7, so that the influence on the external power grid system 7 is avoided; in addition, through setting up a plurality of first equipment areas 1, second equipment area 2 and third equipment area 3 that have different voltage levels and satisfying the network environment demand of different network equipment to integrate the equipment area of different voltage levels, make different network equipment can realize centralized management.
As shown in fig. 1 to 2, further, the off-grid commissioning system further includes a fifth device area 5, where the fifth device area 5 is connected to the second device area 2 through a second voltage transformation unit 6, and the third device area 3 is connected to the fifth device area 5 through a fourth device area 8; the mesh-hanging range of the mesh-hanging test operation system is enlarged through setting the fifth equipment area 5, the second equipment area 2 is reduced in voltage through the second voltage transformation unit 6, so that power is supplied to the fifth equipment area 5, and in addition, when the second voltage transformation unit 6 is powered off, power is supplied to the fifth equipment area 5 through the third equipment area 3 or the fourth equipment area 8; it should be noted that, the fourth equipment area 8 is also provided with an outlet interval, and the outlet interval is connected with an external power grid system, so that the fourth equipment area 8 can also be used as a power supply end to supply power to the fifth equipment area 5; in the present embodiment, the third device region 3 corresponds to the voltage level of the fifth device region 5.
It should be noted that, the present grid-hanging test operation system may further be provided with a sixth device area, a seventh device area, an eighth device area, etc., and the present grid-hanging test operation system is not limited to only three or four device areas, and may be arranged according to the actual grid-hanging requirement, and the additional device areas may be arranged only by connecting in series to the first device area 1, the second device area 2, the third device area 3, or the fifth device area 5.
In this embodiment, the first transforming unit 4 is an existing three-winding transformer structure, the second transforming unit 6 is an existing two-winding transformer structure, and the working principle and the overall structure of the transformer are all of the prior art, which is not described herein.
As shown in fig. 1 to 2, further, the voltage levels of the first device region 1, the second device region 2, and the third device region 3 are gradually reduced; the voltage distribution level among the three equipment areas is realized through the first voltage transformation unit 4, so that the distribution level of the network-hanging test operation system forms a gradient, the network-hanging test operation system can simultaneously have the equipment areas with different voltage levels, and the regional management of different network-hanging equipment is satisfied.
In this embodiment, the first equipment area 1 is configured with a power distribution level of 220kV, the second equipment area 2 is configured with a power distribution level of 110kV, and the third equipment area 3 is configured with a power distribution level of 10kV; the distribution level is not limited to 220kV, 110kV, 10kV, and may be set to 110kV, 35kV, 10kV, etc. according to actual requirements.
As shown in fig. 1 to 2, further, the first device area 1 includes an outgoing line interval 11, a first main transformer incoming line interval 13 and a first net hanging interval 14, one ends of the outgoing line interval 11, the first main transformer incoming line interval 13 and the first net hanging interval 14 are connected through a first bus 15, the other ends of the first main transformer incoming line interval 13 and the first net hanging interval 14 are connected through a first connecting conductor 16, a first switch unit 17 is disposed between the first main transformer incoming line interval 13 and the first connecting conductor 16, a second switch unit 18 is disposed between the first net hanging interval 14 and the first connecting conductor 16, a first power supply end 131 is disposed on the first main transformer incoming line interval 13, and the first power supply end 131 is connected with the high-voltage side of the first transformer unit 4.
When the grid-connected test operation system works, the first equipment area 1 is connected with the power grid system 7 only through the outlet wire interval 11, and the outlet wire interval 11 is used as the only high-voltage power supply of the whole grid-connected test operation system, so that the grid-connected test operation system is isolated from the power grid system 7, and even if the first equipment area 1 has serious power failure, the grid-connected test operation system can be disconnected from the external power grid system 7 by cutting off the outlet wire interval 11, so that the influence on the external power grid system 7 is avoided; in addition, by arranging a plurality of first equipment areas 1, second equipment areas 2, third equipment areas 3 and fifth equipment areas 5 with different voltage levels to meet the requirements of the screening environments of different screening equipment, the screening equipment is intensively arranged at the first screening interval 14, the second screening interval 23 and the like, so that the different screening equipment can realize regional management.
Further, the first device area 1 further includes a first charging space 12, and two ends of the first charging space 12 are respectively connected to the first bus 15 and the first connection conductor 16.
In actual use, the first charging interval 12, the first main transformer incoming line interval 13 and the first net hanging interval 14 are connected in parallel through the first bus 15 and the first connecting conductor 16, so that the whole net hanging test operation system can flexibly operate or withdraw each interval according to different working conditions; the first net hanging interval 14 is additionally arranged to enable net hanging equipment to be isolated from the first main transformer wire inlet interval 13, so that independent operation between the first net hanging interval 14 and the first main transformer wire inlet interval 13 is realized; by additionally arranging the first charging interval 12, the first main transformer wire inlet interval 13 is not influenced even if faults occur when the grid hanging equipment performs voltage examination, and even if the first grid hanging interval 14 and the first main transformer wire inlet interval 13 alternately run.
The specific working state is as follows:
1. during normal operation conditions, that is, when no screening device is required to be detected, the wire outlet interval 11 is kept in a closed state, the first switch unit 17, the first charging interval 12 and the first screening interval 14 are kept in an open state, the first main transformer wire inlet interval 13 is kept in a closed state, so that the wire outlet interval 11, the first bus 15, the first main transformer wire inlet interval 13 and the first power supply end 131 form a link, even if the first main transformer wire inlet interval 13 is put into operation, the first charging interval 12 and the first screening interval 14 are stopped, and the first main transformer wire inlet interval 13 supplies power to the second device area 2 and the third device area 3 through the first power supply end 131; it should be noted that, assuming that the first equipment area 1 is 220kV, the power distribution level of the second equipment area 2 connected to the first power supply terminal 131 may be 110kV, and the power distribution level of the third equipment area 3 may be 10kV; through the arrangement, normal power supply of the first main transformer wire inlet interval 13 can be ensured, and meanwhile, the power supply requirement of the first main transformer wire inlet interval 13 on lower-level power distribution equipment is also ensured.
2. When the wire-hanging operation is performed, that is, when the wire-hanging equipment is connected to the first wire-hanging interval 14, the wire-outlet interval 11 is kept in a closed state, the first switch unit 17, the second switch unit 18 and the first wire-hanging interval 14 are kept in a closed state, and the first charging interval 12 and the first main transformer wire-inlet interval 13 are kept in an open state, so that a connection is formed between the wire-outlet interval 11, the first bus 15, the first wire-hanging interval 14, the first connection conductor 16 and the first power supply end 131; even if the first grid interval 14 is put into operation, the first charging interval 12 and the first main transformer wire inlet interval 13 are stopped, and grid equipment is arranged in the first grid interval 14, so that a current loop is connected through the first grid interval 14, and the grid equipment can perform test operation verification in a real power system, and in addition, the first grid interval 14 also supplies power to the second equipment area 2 and the third equipment area 3 through the first power supply end 131; when the network hanging equipment needs to be replaced and power is cut off, the first network hanging interval 14, the first switch unit 17 and the second switch unit 18 are disconnected, so that the connection is switched, namely the connection is switched to the connection in the normal operation condition, and the first network hanging interval 14 keeps supplying power to the second equipment area 2 and the third equipment area 3 through the first main transformer incoming line interval 13 during the outage period, so that the long-time power cut is avoided.
3. When the charging operation is performed, the charging operation is to perform voltage checking on the grid hanging device, current checking is not required, the wire outlet interval 11 is kept in a closed state, the first charging interval 12 and the second switch unit 18 are kept in a closed state, the first grid hanging interval 14 is disconnected from the first bus 15, the first switch unit 17 is kept in an open state, so that the wire outlet interval 11, the first bus 15, the first charging interval 12, the first connecting conductor 16 and the first grid hanging interval 14 form a connection for performing voltage checking on the grid hanging device, and the wire outlet interval 11, the first bus 15, the first main transformer wire inlet interval 13 and the first power supply end 131 form a conventional power supply connection; the two links are not mutually affected, and even if the network equipment fails during voltage assessment, the power supply of the first main transformer wire inlet interval 13 is not affected; through the arrangement, the flexibility of the use of the net hanging test operation system is greatly improved, and the problem of long-time and large-range power failure caused by net hanging equipment faults is avoided.
As shown in fig. 1 to 2, further, the second equipment area 2 includes a second main transformer incoming line interval 22 and a second net hanging interval 23, one ends of the second main transformer incoming line interval 22 and the second net hanging interval 23 are connected through a second bus 24, the other ends of the second main transformer incoming line interval 22 and the second net hanging interval 23 are connected through a second linking conductor 25, a third switching unit 26 is arranged between the second main transformer incoming line interval 22 and the second linking conductor 25, and a fourth switching unit 27 is arranged between the second net hanging interval 23 and the second linking conductor 25; the second equipment area 2 further comprises a main transformer middle section 19, and the second bus 24 is connected with the middle voltage side of the first voltage transformation unit 4 through the main transformer middle section 19; the main transformer intermediate space 19 acts as a high-voltage power supply for the second equipment area 2 in accordance with the action of the outlet space 11.
Further, the second device area 2 further includes a second charging space 21, and two ends of the second charging space 21 are connected to the second bus bar 24 and the second coupling conductor 25, respectively.
Further, a second power supply end 221 is disposed on the second main transformer line interval 22, the second power supply end 221 is connected to the high voltage side of the second transformer unit 6, and the low voltage side of the second transformer unit 6 is connected to the fifth equipment area 5.
In actual use, the second charging interval 21, the second main transformer incoming line interval 22 and the second net hanging interval 23 are connected in parallel through the second bus 24 and the second connecting conductor 25, so that the second equipment area 2 can flexibly operate or exit each interval according to different working conditions; the second net hanging interval 23 is additionally arranged, so that net hanging equipment can be isolated from the second main transformer inlet wire interval 22, and independent operation between the second net hanging interval 23 and the second main transformer inlet wire interval 22 is realized; by adding the second charging interval 21, the second main transformer wire inlet interval 22 is not affected even if faults occur during voltage examination of the wire hanging equipment, and even if the second wire hanging interval 23 and the second main transformer wire inlet interval 22 run alternately.
The specific working state is as follows:
1. during normal operation conditions, that is, when the screening device is not required to be detected, the main transformer middle interval 19 is kept in a closed state, the third switch unit 26, the second charging interval 21 and the second screening interval 23 are kept in an open state, and the second main transformer wire interval 22 is kept in a closed state, so that the main transformer middle interval 19, the second bus 24, the second main transformer wire interval 22 and the first power supply end 131 form a connection, even if the second main transformer wire interval 22 is put into operation, the second charging interval 21 and the second screening interval 23 are stopped, and the second main transformer wire interval 22 also supplies power to the fifth device area 5 through the second power supply end 221.
2. When the grid is in operation, that is, when the grid hanging device is connected to the second grid hanging interval 23, the main transformer middle interval 19 is kept in a closed state, the third switch unit 26, the fourth switch unit 27 and the second grid hanging interval 23 are kept in a closed state, and the second charging interval 21 and the second main transformer incoming line interval 22 are kept in an open state, so that a connection is formed among the main transformer middle interval 19, the second bus bar 24, the second grid hanging interval 23, the second connection conductor 25 and the second power supply end 221; even if the second grid interval 23 is put into operation, the second charging interval 21 and the second main transformer wire inlet interval 22 are stopped, and grid equipment is arranged in the second grid interval 23, so that a current loop is connected through the second grid interval 23, and the grid equipment can perform test operation verification in a real power system, and in addition, the second grid interval 23 also supplies power to the fifth equipment area 5 through the second power supply end 221; when the grid hanging device needs to be replaced and has a power failure, the second grid hanging interval 23, the third switch unit 26 and the fourth switch unit 27 are disconnected, so that the connection is switched, namely, the connection is switched to the connection in the normal operation condition, the second grid hanging interval 23 is stopped in time, and the power supply to the fifth device area 5 is kept through the second main transformer wire inlet interval 22 during the stopping period, so that the long-time power failure is avoided.
3. During the charging operation condition, the charging operation condition is that the voltage checking is performed on the grid equipment, no current checking is required, the main transformer middle interval 19 is kept in a closed state, the second charging interval 21 and the fourth switching unit 27 are kept in a closed state, the second grid interval 23 is disconnected from the second bus 24, and the third switching unit 26 is kept in an open state, so that the main transformer middle interval 19, the second bus 24, the second charging interval 21, the second linking conductor 25 and the second grid interval 23 form a connection for the voltage checking of the grid equipment, and the main transformer middle interval 19, the second bus 24, the second main transformer inlet interval 22 and the first power supply end 131 form a conventional power supply connection; the two links are not mutually affected, and even if the network equipment fails during voltage assessment, the power supply of the second main transformer wire inlet interval 22 is not affected; through the arrangement, the flexibility of the use of the net hanging test operation system is greatly improved, and the problem of long-time and large-range power failure caused by net hanging equipment faults is avoided.
The outlet interval 11, the first main transformer inlet interval 13, the first net hanging interval 14, the first charging interval 12, the main transformer middle interval 19, the second main transformer inlet interval 22, the second net hanging interval 23 and the second charging interval 21 all comprise at least two disconnecting switches and at least one circuit breaker, and the disconnecting switches and the circuit breakers are connected in series; the reliability and stability of each interval switch state are ensured by arranging the isolating switch and the breaker which are mutually connected in series.
It should be noted that, the first switch unit 17, the second switch unit 18, the third switch unit 26 and the fourth switch unit 27 are all existing isolation switch structures, and the working principle and specific structure of the isolation switch are all the existing technologies, which are not described herein.
As shown in fig. 1 to 2, further, the third equipment area 3 includes a plurality of first lower-level intervals 31, the plurality of first lower-level intervals 31 are all connected by a third bus bar 32, and the third bus bar 32 is connected to the low-voltage side of the first transforming unit 4; when the net hanging equipment is required to be arranged in the third equipment area 3, the net hanging equipment is arranged in any first lower interval 31 according to the requirement, so that the net hanging test operation system is accessed; the interval type of the first low-voltage interval 31 may be selected according to the requirement of the hanging net, for example, the interval is set to be a 10kV outlet interval, a 10kV main transformer inlet interval, a 10kV station transformer interval, a 10kV grounding transformer interval, a 10kV parallel capacitor bank interval, and the like.
As shown in fig. 1 to 2, further, the fifth equipment area 5 includes a plurality of second lower-level intervals 51, the plurality of second lower-level intervals 51 are all connected by a fourth bus bar 52, the fourth bus bar 52 is connected to the low-voltage side of the second transforming unit 6, and the fourth bus bar 52 is connected in series with the third bus bar 32; when the screening equipment needs to be arranged in the fifth equipment area 5, setting the screening equipment in any second lower interval 51 according to the requirements, thereby completing the access with the screening test operation system; the interval type of the second lower interval 51 may be selected according to the requirement of the hanging net, for example, the interval is set to be 10kV outlet interval, 10kV main transformer inlet interval, 10kV station transformer interval, 10kV grounding transformer interval, 10kV parallel capacitor bank interval, etc.
In this embodiment, the fourth equipment area 8 includes a bus bar and a plurality of lower intervals, the plurality of lower intervals are connected by the bus bar, and one of the lower intervals is connected to an external power grid system as an outgoing line interval; when the device is in operation, the fourth device area is respectively connected with the third device area and the fifth device area, the third device area loses power, and power can be supplied to the third device area through the fourth device area; the fifth device area loses power and power may be supplied to the fifth device area through the fourth device area.
In summary, the whole grid-connected commissioning system is connected to the external power grid system 7 only through the first device area 1, so that the first device area 1 is used as the only high-voltage power supply of the whole grid-connected commissioning system, and the grid-connected commissioning system is isolated from the external power grid system 7, and even if the first device area 1, the second device area 2 or the third device area 3 has serious power failure, the grid-connected commissioning system can be disconnected from the external power grid system 7 by disconnecting the first device area 1 from the external power grid system 7, so that the influence on the external power grid system 7 is avoided; in addition, through setting up a plurality of first equipment areas 1, second equipment area 2 and third equipment area 3 that have different voltage levels and satisfying the net test run demand of different net hanging equipment to integrate the equipment area of different voltage levels, make different net hanging equipment can realize centralized management.
It will be understood that equivalents and modifications will occur to those skilled in the art in light of the present utility model and their spirit, and all such modifications and substitutions are intended to be included within the scope of the present utility model as defined in the following claims.
Claims (10)
1. The grid-hanging test operation system is characterized by comprising a first equipment area, a second equipment area, a third equipment area and a first voltage transformation unit, wherein the first voltage transformation unit is provided with a high voltage side, a medium voltage side and a low voltage side, the first equipment area is connected with the high voltage side of the first voltage transformation unit, the second equipment area is connected with the medium voltage side of the first voltage transformation unit, and the third equipment area is connected with the low voltage side of the first voltage transformation unit; the first device area is configured to connect to an external power grid system and to supply power to the second device area and the third device area.
2. The grid-connected test run system according to claim 1, further comprising a fourth device area and a fifth device area, wherein the fifth device area is connected to the second device area through a second transformation unit, and the third device area is connected to the fifth device area through the fourth device area.
3. The on-grid commissioning system of claim 1, wherein the voltage levels of the first device region, the second device region, and the third device region are stepped down.
4. The grid-hung test operation system according to claim 1, wherein the first equipment area comprises a wire outlet interval, a first main transformer wire inlet interval and a first grid-hung interval, one ends of the wire outlet interval, the first main transformer wire inlet interval and the first grid-hung interval are connected through a first bus, the other ends of the first main transformer wire inlet interval and the first grid-hung interval are connected through a first connecting conductor, a first switch unit is arranged between the first main transformer wire inlet interval and the first connecting conductor, a second switch unit is arranged between the first grid-hung interval and the first connecting conductor, a first power supply end is arranged on the first main transformer wire inlet interval, and the first power supply end is connected with a high-voltage side of the first voltage transformation unit.
5. The grid commissioning system of claim 4, wherein said first device region further comprises a first charging interval, wherein two ends of said first charging interval are respectively connected to said first bus bar and said first contact conductor.
6. The grid test run system according to claim 2, wherein the second equipment area comprises a second main transformer wire interval and a second grid interval, one ends of the second main transformer wire interval and the second grid interval are connected through a second bus, the other ends of the second main transformer wire interval and the second grid interval are connected through a second connecting conductor, a third switching unit is arranged between the second main transformer wire interval and the second connecting conductor, and a fourth switching unit is arranged between the second grid interval and the second connecting conductor; the second equipment area further comprises a main transformer middle interval, and the second bus is connected with the medium voltage side of the first voltage transformation unit through the main transformer middle interval.
7. The grid commissioning system of claim 6, wherein said second device area further comprises a second charging interval, wherein two ends of said second charging interval are respectively connected to said second bus bar and said second linking conductor.
8. The grid-connected test run system according to claim 6, wherein a second power supply end is arranged on the second main transformer wire inlet space, the second power supply end is connected with the high-voltage side of the second voltage transformation unit, and the low-voltage side of the second voltage transformation unit is connected with the fifth equipment area.
9. The on-grid commissioning system of claim 8, wherein said third facility area comprises a plurality of first run-down intervals, each of said plurality of first run-down intervals being connected by a third bus bar, said third bus bar being connected to a low voltage side of said first voltage transforming unit.
10. The grid tie commissioning system of claim 9, wherein a fifth equipment area comprises a plurality of second run-down intervals, wherein a plurality of said second run-down intervals are each connected by a fourth bus, wherein said fourth bus is connected to a low voltage side of said second voltage transformation unit, and wherein said fourth bus is connected in series with said third bus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223205296.XU CN219627369U (en) | 2022-11-30 | 2022-11-30 | Net hanging test operation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223205296.XU CN219627369U (en) | 2022-11-30 | 2022-11-30 | Net hanging test operation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219627369U true CN219627369U (en) | 2023-09-01 |
Family
ID=87771373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223205296.XU Active CN219627369U (en) | 2022-11-30 | 2022-11-30 | Net hanging test operation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219627369U (en) |
-
2022
- 2022-11-30 CN CN202223205296.XU patent/CN219627369U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7193338B2 (en) | Method for tapping a high voltage transmission line and substation using the same | |
| CN103323692B (en) | The preparation method of one ± 800kV extra-high voltage direct-current transmission engineering system pilot project | |
| Ku et al. | Faulty line-section identification method for distribution systems based on fault indicators | |
| CN106532904A (en) | Double bus-powered PT secondary voltage switching circuit and protection circuit thereof | |
| CN114024364A (en) | Method and system for constructing high-reliability chain type energy Internet | |
| CN102074994A (en) | Charging device of direct-current (DC) system | |
| CN219627369U (en) | Net hanging test operation system | |
| Chan | Electric power distribution systems | |
| CN111668783B (en) | Special-shaped HGIS equipment, electrical main wiring and transformer substation | |
| CN214626343U (en) | Screen-removing cabinet-based protection architecture of offshore booster station | |
| CN212485806U (en) | Main wiring structure of transformer substation | |
| CN202405780U (en) | medium voltage distribution network | |
| Mohapatra et al. | Risk and asset management of transmission system in a reformed power sector | |
| CN204992580U (en) | Expanded not repeated fixed measuring equipment of dual power supply | |
| CN206236963U (en) | 110 kilovolts of bus PT combining unit secondary circuits of intelligent substation | |
| CN114172261B (en) | Nuclear power plant emergency power supply system and control method | |
| CN204992274U (en) | Dual supply massive quantity power supply and high expanded not repeated fixed measuring equipment of low meter that supplies | |
| CN204992273U (en) | Expanded pull -out type measuring equipment that does not repeat of dual power supply | |
| CN219499036U (en) | Electric main wiring system of power plant | |
| CN220382768U (en) | Bus wiring structure | |
| CN111864551B (en) | Main wiring structure of transformer substation | |
| Westerweller et al. | Crossing the divide [Basslink HVDC interconnector] | |
| CN110649499B (en) | GIS applied to indoor UPFC engineering | |
| CN219842739U (en) | SF6 gas pressure alarm loop for GIS equipment | |
| Jiangguo et al. | Reliable control and protection system for the Tian-Guang HVDC transmission project |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |