CN213636638U - 220kV double-bus mixed phase type arrangement structure of transformer substation - Google Patents
220kV double-bus mixed phase type arrangement structure of transformer substation Download PDFInfo
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- CN213636638U CN213636638U CN202022460034.2U CN202022460034U CN213636638U CN 213636638 U CN213636638 U CN 213636638U CN 202022460034 U CN202022460034 U CN 202022460034U CN 213636638 U CN213636638 U CN 213636638U
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Abstract
The utility model relates to a high voltage distribution technical field discloses a two generating line hybrid phase formula arrangement structure of transformer substation 220kV, including a plurality of inlet wires of organizing, a plurality of groups are qualified for the next round of competitions and two sets of generating line group, two generating lines of two sets of generating line group cophase generating line arrange in pairs and form three cophase generating line groups, cophase generating line group goes up same generating line spaced inlet wire return circuit and is equipped with two single phase isolation switch on the return circuit of being qualified for the next round of competitions, form a single phase isolation switch group, arrange a looks wire stay at its central point, both sides are equipped with respectively around and connect the inlet wire and the inlet wire overline that is qualified for the next round of competitions and the overline that is qualified for the next round of competitions, and be connected with the single phase isolation switch on inlet wire return circuit and the return. The utility model discloses 220kV double bus mixed phase formula arrangement structure of transformer substation can effectively reduce 220kV high-voltage distribution device area, reduces door structure, generating line framework and generating line support insulator quantity.
Description
Technical Field
The utility model relates to a high voltage distribution technical field, concretely relates to 220kV double bus mixed phase formula arrangement structure of transformer substation.
Background
The important purposes of saving the occupied area of the power transmission and transformation project and reducing the material consumption and investment of equipment are the optimization of the project design. The 220kV bus of the domestic transformer substation generally adopts double-bus wiring, in the outdoor double-bus medium-sized arrangement scheme, only 1 return incoming line or outgoing line interval can be arranged in one bus interval, and if the main transformer and the outgoing line interval are more, the occupied area, the number of door structures and the number of bus supporting structures of the outdoor distribution device area of the transformer substation are increased in proportion.
With the high-speed development of a power grid, the scale of a transformer substation is larger and larger, the number of incoming lines and outgoing lines of a conventional 220kV power distribution device is larger and larger, and the problems of large occupied area and high engineering cost of the transformer substation are more and more prominent.
SUMMERY OF THE UTILITY MODEL
The utility model aims at exactly being not enough to above-mentioned technique, provide a 220kV double bus mixed phase formula arrangement structure of transformer substation, can effectively reduce 220kV high-voltage distribution device area, effectively reduce door structure, generating line framework and generating line support insulator quantity, reduce the engineering expense, and the installation is maintained conveniently.
In order to achieve the purpose, the utility model relates to a 220kV double-bus mixed phase type arrangement structure of a transformer substation, which comprises a plurality of groups of incoming lines, a plurality of groups of outgoing lines and two groups of bus groups, wherein the two groups of bus groups are A-A-B-B-C-C in sequence from the incoming line side to the outgoing line side, two groups of cophased buses of the bus groups are arranged in pairs to form three groups of cophased bus groups, two single-phase isolating switches are respectively arranged on the incoming line loop and the outgoing line loop at the same bus interval on the cophased bus groups, four single-phase isolating switches form a single-phase isolating switch group, a phase lead wire pull-out column is arranged on the central point of the single-phase isolating switch group in each group, the front side and the back side of the phase lead wire pull-out column are respectively provided with an incoming line overline and an outgoing line which are connected with the single-phase isolating switches on the incoming line loop and the outgoing line loop through a lead-, the single-phase isolating switch is connected with the bus through a bus fitting, and each phase conductor stay post is superposed and aligned with a phase conductor of each phase incoming line/outgoing line, so that three groups of single-phase isolating switch groups at the same bus interval are sequentially staggered according to a phase interval.
Preferably, two buses on the same bus interval incoming line loop on the same in-phase bus group are respectively provided with one single-phase isolating switch, and two buses on the outgoing line loop are respectively provided with one single-phase isolating switch.
Preferably, in every group in the homophase generating line group, two the tip of generating line all is equipped with bus isolator, two bus isolator passes through the pipe bus and connects through current transformer and circuit breaker, forms the bus-tie.
Preferably, in each group of in-phase bus bars, a voltage transformer interval isolating switch and a voltage transformer are arranged at the positions, close to the bus isolating switch, of the end parts of the two bus bars.
Preferably, the single-phase isolating switch is connected with the tubular busbar of the busbar through a tubular busbar supporting fitting.
Preferably, two single-phase isolating switches on the outgoing line loop in the same-phase bus group are connected through a conducting wire.
Preferably, the outgoing line overline is connected with the outgoing line through a circuit breaker, a lightning arrester, an isolating switch, a wave trap, a voltage transformer and the lightning arrester.
Preferably, the incoming line is connected with the incoming line overline after passing through the lightning arrester, the current transformer and the breaker.
Compared with the prior art, the utility model, have following advantage:
1. the transverse length (vertical to the outgoing line direction side) of the transformer substation is remarkably reduced, especially for the transformer substation with larger scale and more transformer loops and outgoing line loops, the transverse length of the field of the high-voltage distribution device can be reduced by about 50% to the maximum extent compared with the traditional outdoor open type arrangement scheme, and the engineering cost related to the field is effectively saved;
2. the single-phase isolating switch is used for supporting the bus bar, so that two rows of bus bar supporting frames and supporting insulators are omitted, and the construction cost can be effectively reduced;
3. the bus-tie equipment is directly connected by adopting a conductor, so that a door mechanism is omitted, and the construction cost can be effectively reduced.
Drawings
FIG. 1 is an electrical plan layout of a 220kV double-bus hybrid phase arrangement structure of a substation of the present invention;
FIG. 2 is a cross-sectional view of a set of incoming line spacings in a 220kV double-bus mixed-phase arrangement of a substation of the present invention;
FIG. 3 is a cross-sectional view of a group of outlet intervals in a 220kV double-bus mixed-phase arrangement structure of a substation of the present invention;
FIG. 4 is a cross-sectional view of the phase A bus bar of the first bus bar set of FIG. 2;
FIG. 5 is a cross-sectional view of the phase A bus bar of the second bus bar set of FIG. 2;
fig. 6 is a schematic diagram of the bus-to-bus spacing of two a-phase buses in fig. 4 and 5.
The components in the figures are numbered as follows:
a first bus bar group 1, a first single-phase isolating switch 2, a second single-phase isolating switch 3, a third single-phase isolating switch 4, a second bus bar group 5, a fourth single-phase isolating switch 6, a fifth single-phase isolating switch 7, a sixth single-phase isolating switch 8, a mother A-phase pipe bus 9, a mother B-phase pipe bus 10, a mother C-phase pipe bus 11, a mother A-phase pipe bus 12, a mother B-phase pipe bus 13, a mother C-phase pipe bus 14, a seventh single-phase isolating switch 15, an eighth single-phase isolating switch 16, a ninth single-phase isolating switch 17, a tenth single-phase isolating switch 18, an eleventh single-phase switch 19, a twelfth single-phase isolating switch 20, a first A-phase bus 21, a first voltage transformer 22, a first voltage transformer interval isolating switch 23, a first bus isolating switch 24, a second A-phase bus 25, a second voltage transformer interval isolating switch 26, a second voltage transformer 27, a third single-phase isolating switch 2, a fifth single-phase isolating switch 7, a, The second bus isolating switch 28, the current transformer 29, the breaker 30, the incoming line 31, the outgoing line 32, the bus group 33, the non-inverting bus group 34, the single-phase isolating switch 35 and the phase conductor pull-out post 36.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and specific embodiments.
The utility model discloses a 220kV double-bus mixed-phase arrangement structure of transformer substation, including three inlet wires 31 of group, three group play line 32 and two groups of generating line group 33, two groups of generating line group 33 are A-A-B-B-C-C from inlet wire 31 side to play line 32 side in proper order, two cophase generating lines of two groups of generating line group 33 are arranged in pairs to form three groups of cophase generating line group 34, two single isolated switches 35 are respectively arranged on the inlet wire loop and the outlet wire loop of same generating line interval on the cophase generating line group 34, single isolated switch 35 is connected with the pipe bus of generating line through pipe bus support hardware, two single isolated switches 35 on the outlet wire loop in the cophase generating line group are connected through the wire, four single switches 35 form a single isolated switch group, a phase wire pull string 36 is arranged on the central point of each group of single isolated switch group, the front and back both sides of phase wire pull string 36 are equipped with the inlet wire overline and the outlet overline of incoming, the incoming line overline and the outgoing line overline are respectively connected with the single phase isolating switch on the incoming line loop and the outgoing line loop through the down lead, the single phase isolating switch 35 is connected with the bus through the bus hardware, each phase conductor stay post 36 is coincident and aligned with the phase conductor of each phase incoming line/outgoing line, and the three groups of single phase isolating switch groups at the same bus interval are sequentially staggered according to the phase interval.
Wherein, two buses on the same bus interval incoming line loop on the same in-phase bus group 34 are respectively provided with a single isolating switch 35, two buses on the outgoing line loop are respectively provided with a single isolating switch 35, in each in-phase bus group 34, the end parts of the two buses are respectively provided with a bus isolating switch, and the two bus isolating switches are connected with the circuit breaker 30 through the buses via the current transformer 29. And in each in-phase bus group 34, the end parts of the two buses close to the bus isolating switch are provided with a voltage transformer interval isolating switch and a voltage transformer.
In addition, the outgoing line overline is connected with the outgoing line after passing through the circuit breaker, the lightning arrester, the isolating switch, the wave trap, the voltage transformer and the lightning arrester, and the incoming line is connected with the incoming line overline after passing through the lightning arrester, the current transformer and the circuit breaker.
As shown in fig. 1, the electrical plane layout diagram of a 220kV double-bus mixed-phase arrangement structure of a transformer substation includes a 3-circuit 220kV outgoing line interval, a 3-circuit 220kV transformer incoming line interval, a 1-circuit bus coupler interval and a 1-circuit double-bus voltage transformer interval. The two groups of bus bar groups 33 are sequentially A-A-B-B-C-C from the incoming line 31 side to the outgoing line 32 side, and the corresponding single-phase isolating switches 35 are also arranged in an A-A-B-B-C-C manner. The single-phase isolating switch 35 is all in electrical linkage, the bus bar is supported by the bus isolating switch, the bus voltage transformers are arranged at the end part at intervals close to the bus coupler, and the bus coupler is arranged at the right end part at intervals.
As shown in fig. 2, which is a cross-sectional view of a group of incoming lines at intervals, the incoming lines are connected with a first single isolated switch 2 (phase a), a second single isolated switch 3 (phase B) and a third single isolated switch 4 (phase C) of a first bus bar group 1 through a lightning arrester, a current transformer and a circuit breaker, and are connected with a fourth single isolated switch 6 (phase a), a fifth single isolated switch 7 (phase B) and a sixth single isolated switch 8 (phase C) on the second bus bar group 5 through conducting wires, the first single isolated switch 2 is connected with a bus bar a-phase bus bar 9 of the first bus bar group 1 through a bus bar supporting fitting, the second single isolated switch 3 is connected with a bus bar B-phase bus bar 10 of the first bus bar group 1 through a bus bar supporting fitting, the third single isolated switch 4 is connected with a bus bar C-phase bus bar 11 of the first bus bar group 1 through a bus bar supporting fitting, the fourth single isolated switch 6 is connected with a bus bar 12 of the second bus bar group 5 through a bus bar supporting fitting, the fifth single-phase isolating switch 7 is connected with a second bus B-phase bus 13 of the second bus group 5 through a bus supporting hardware fitting, and the sixth single-phase isolating switch 8 is connected with a second bus C-phase bus 14 of the second bus group 5 through a bus supporting hardware fitting.
As shown in FIG. 3, which is a sectional view of a group of outgoing line intervals, a seventh single phase isolating switch 15 (phase A) is connected with a first bus phase A pipe bus 9 through a pipe bus support fitting, an eighth single phase isolating switch 16 (phase B) is connected with a first bus phase B pipe bus 10 through a pipe bus support fitting, a ninth single phase isolating switch 17 (phase C) is connected with a first bus phase C pipe bus 11 through a pipe bus support fitting, a tenth single phase isolating switch 18 (phase A) is connected with a second bus phase A pipe bus 12 through a pipe bus support fitting, an eleventh single phase isolating switch 19 (phase B) is connected with a second bus phase B pipe bus 13 through a pipe bus support fitting, a twelfth single phase isolating switch 20 (phase C) is connected with a second bus phase C pipe bus 14 through a pipe bus support fitting, and the seventh single switch 15, the eighth single switch 16 and the ninth single switch 17 are respectively connected with the tenth single phase isolating switch 18, the eighth single phase isolating switch 18, the tenth single phase isolating switch 18, the ninth single phase isolating switch 18, The eleventh single-phase isolating switch 19 is connected with the twelfth single-phase isolating switch 20, and then is connected with the outgoing line through the down lead, the outgoing line jumper, the circuit breaker, the lightning arrester, the isolating switch, the wave trap, the voltage transformer and the lightning arrester.
As shown in fig. 4, which is a sectional view of the a-phase bus, wherein a first voltage transformer 22, a first voltage transformer interval isolating switch 23 and a first bus isolating switch 24 are sequentially disposed at an end of a first a-phase bus 21 of the first bus group 1, as shown in fig. 5, a second voltage transformer interval isolating switch 26, a second voltage transformer 27 and a second bus isolating switch 28 are sequentially disposed at an end of a second a-phase bus 25 of the second bus group 5, the first bus isolating switch 24 supports the a-phase bus of the first bus group 1 through a bus pipe fitting, and the second bus isolating switch 28 supports the a-phase bus of the second bus group 5 through a bus pipe fitting. As shown in fig. 6, the double bus-bar interval: the first bus bar isolation switch 24 is connected with the second bus bar isolation switch 28 through a bus bar (or a lead) after passing through a current transformer 29 and a breaker 30.
The end faces of the other B-phase bus bar and the C-phase bus bar refer to fig. 4, 5, and 6.
The utility model discloses 220kV double bus mixed phase formula arrangement structure of transformer substation has shown the transverse length (perpendicular to the direction side of being qualified for the next round of competitions) that has reduced the transformer substation, especially to the transformer substation that the scale is great, transformer return circuit number and the return circuit number of being qualified for the next round of competitions are more, the transverse length in high voltage distribution device field can reduce about 50% length than traditional outdoor open-type arrangement scheme by the biggest, effectively practice thrift the engineering cost that the place is relevant; the single-phase isolating switch is used for supporting the bus bar, so that two rows of bus bar supporting frames and supporting insulators are omitted, and the construction cost can be effectively reduced; and the bus-bar connection equipment is directly connected by adopting a conductor, so that a door structure is omitted, and the construction cost can be effectively reduced.
Claims (8)
1. The utility model provides a two generating line hybrid phase formula arrangement structure of transformer substation 220kV, includes that a plurality of inlet wires of organizing (31), a plurality of groups are qualified for the next round of competitions (32) and two sets of generating line group (33), its characterized in that: two groups of the bus bar groups (33) are sequentially A-A-B-B-C-C from the incoming line (31) side to the outgoing line (32) side, two buses of the same phase of the two groups of the bus bar groups (33) are arranged in pairs to form three groups of in-phase bus bar groups (34), two single isolated switches (35) are respectively arranged on an incoming line loop and an outgoing line loop of the same bus bar interval on the in-phase bus bar group (34), four single isolated switches (35) form a single isolated switch group, a phase conductor pull wire column (36) is arranged at the central point of each group of the single isolated switch groups, the front side and the rear side of the phase conductor pull wire column (36) are respectively provided with an incoming line overline and an outgoing line overline which are connected with the incoming line loop and the outgoing line loop, and the incoming line overline and the outgoing line overline are respectively connected with the single isolated switches (35) on the incoming line loop and the outgoing, the single-phase isolating switch (35) is connected with the bus through a bus hardware fitting, and each phase conductor stay (36) is overlapped and aligned with a phase conductor of each phase incoming line/outgoing line, so that three groups of single-phase isolating switch groups at the same bus interval are sequentially staggered according to the phase interval.
2. The substation 220kV double-bus hybrid phase arrangement structure of claim 1, wherein: two buses on an incoming line loop of the same bus interval on the same in-phase bus group (34) are respectively provided with one single-phase isolating switch (35), and two buses on an outgoing line loop are respectively provided with one single-phase isolating switch (35).
3. The substation 220kV double-bus hybrid phase arrangement structure of claim 1, wherein: every group in the homophase generating line group (34), two the tip of generating line all is equipped with bus isolator, two bus isolator passes through the pipe bus and connects through current transformer (29) and circuit breaker (30).
4. The substation 220kV double-bus hybrid phase arrangement structure of claim 3, wherein: in each in-phase bus group (34), voltage transformer interval isolating switches and voltage transformers are arranged at the positions, close to the bus isolating switches, of the end parts of the two buses.
5. The substation 220kV double-bus hybrid phase arrangement structure of claim 1, wherein: the single-phase isolating switch (35) is connected with the tubular bus of the bus through a tubular bus support fitting.
6. The substation 220kV double-bus hybrid phase arrangement structure of claim 1, wherein: and the two single-phase isolating switches (35) on the outgoing line loop in the in-phase bus group (34) are connected through a lead.
7. The substation 220kV double-bus hybrid phase arrangement structure of claim 1, wherein: the outgoing line overline is connected with the outgoing line through a circuit breaker, a lightning arrester, an isolating switch, a wave trap, a voltage transformer and the lightning arrester.
8. The substation 220kV double-bus hybrid phase arrangement structure of claim 1, wherein: the incoming line passes through the lightning arrester, the current transformer and the breaker and then is connected with the incoming line across line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022460034.2U CN213636638U (en) | 2020-10-30 | 2020-10-30 | 220kV double-bus mixed phase type arrangement structure of transformer substation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022460034.2U CN213636638U (en) | 2020-10-30 | 2020-10-30 | 220kV double-bus mixed phase type arrangement structure of transformer substation |
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| Publication Number | Publication Date |
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| CN213636638U true CN213636638U (en) | 2021-07-06 |
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| CN202022460034.2U Active CN213636638U (en) | 2020-10-30 | 2020-10-30 | 220kV double-bus mixed phase type arrangement structure of transformer substation |
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