CN212626549U

CN212626549U - Main transformer incoming line structure of multi-main-transformer intensive HGIS equipment

Info

Publication number: CN212626549U
Application number: CN202022028764.5U
Authority: CN
Inventors: 韩志萍; 李学鹏; 张万祥; 刘鹏
Original assignee: Northwest Electric Power Design Institute of China Power Engineering Consulting Group; State Grid Qinghai Electric Power Co Ltd
Current assignee: Northwest Electric Power Design Institute of China Power Engineering Consulting Group; State Grid Qinghai Electric Power Co Ltd
Priority date: 2020-09-16
Filing date: 2020-09-16
Publication date: 2021-02-26
Anticipated expiration: 2030-09-16

Abstract

A main transformer incoming line structure of multi-main-transformer intensive HGIS equipment is characterized in that one incoming line and outgoing line interval comprises a first bus side circuit breaker, a second bus side circuit breaker, a middle circuit breaker, a bus side sleeve, a main transformer second bus incoming line side sleeve, an outgoing line adjacent interval sleeve and an adjacent interval overline; the first bus side circuit breaker is connected with the first bus through a bus side sleeve, and the second bus side circuit breaker is connected with the second bus through a bus side sleeve; i, connecting a female side circuit breaker with adjacent spaced overlines through adjacent spaced sleeves for outgoing lines, and outgoing lines through the adjacent spaced overlines; the circuit breaker at the side of the second female is connected with a main transformer inlet wire through a main transformer II female inlet wire side sleeve; two ends of the middle circuit breaker are respectively connected with the wiring between the II female side circuit breaker and the II female incoming line side sleeves of the main transformer and between the I female side circuit breaker and the adjacent outgoing line spacing sleeves through wires. The utility model provides high equipment operational reliability saves occupation of land and equipment cost simultaneously.

Description

Main transformer incoming line structure of multi-main-transformer intensive HGIS equipment

Technical Field

The utility model belongs to super high voltage power transmission and transformation field relates to a many owner become intensification HGIS equipment owner and become inlet wire structure.

Background

With the high-speed development of power grid construction, the scale of ultrahigh voltage substation engineering is larger and larger, the problem of large occupied area due to the arrangement of conventional power distribution devices is more and more prominent, land backup resources are seriously insufficient, the land acquisition and removal cost of a station site is increased day by day, particularly in some urban central areas, the land acquisition cost is obviously increased, the station site selection of a substation is more and more difficult, and the problem that power grid construction must face is to improve the resource utilization rate of the land. The existing 330kV HGIS equipment C-shaped arrangement is an arrangement form of leading out wires in the same direction of an upper layer and a lower layer at intervals, the arrangement form is a common arrangement form in recent engineering, the arrangement form effectively reduces the phenomenon that the leading-out wires of the conventional HGIS equipment 2 occupy 2 intervals, and the arrangement form can be a mode of leading out wires at intervals of 2 in a solid line. However, the general main transformer incoming line and outgoing line are arranged on two sides of the HGIS equipment, the main transformer incoming line can only enter the I bus close to the main transformer side through the HGIS circuit breaker, for the transformer station with the transformer substation main transformer scale exceeding 3 main transformers, the 1 st and 2 nd main transformers directly enter the line from one side of the HGIS equipment, and are connected with the I bus close to the main transformer side through the I bus side circuit breaker. In order to ensure the operation reliability of the 330kV power distribution device, an operation and maintenance unit requires that a 3 rd main transformer enters a II bus far away from the main transformer side through a circuit breaker at the II main side of HGIS equipment, so that when any transformer fails, the 330kV bus can be ensured not to lose power due to the transformer failure. Therefore, the 3 rd main transformer and the II bus need to be connected without changing the C-shaped arrangement mode of the 330kV HGIS equipment.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to the problem that area is big among the 330kV HGIS equipment "C" type arrangement mode among the above-mentioned prior art, a many owner become intensification HGIS equipment owner and become inlet wire structure, the reliability of operation is arranged to 330kV distribution device HGIS equipment "C" type has been improved, realize 3 rd main change and II bus-bar between being connected under the condition of not increasing area, not increasing the circuit breaker more simultaneously, it is big to have reduced engineering area, the high scheduling problem of equipment cost.

In order to realize the above-mentioned purpose, the utility model provides a many owner become intensification HGIS equipment owner and become inlet wire structure, an business turn over line interval of which includes: the circuit breaker comprises a first bus side circuit breaker, a second bus side circuit breaker, a middle circuit breaker, a bus side sleeve, a main transformer and a second bus inlet side sleeve, outlet adjacent spaced sleeves and adjacent spaced overlines; for a transformer substation comprising 3 groups of main transformers, leading wires from one side of HGIS equipment into a 1 st main transformer and a 2 nd main transformer, connecting the wires with a first bus close to the main transformer side through a first bus side circuit breaker, and leading the 3 rd main transformer into a second bus far away from the main transformer side through a second bus side circuit breaker; the I bus side circuit breaker is connected with the I bus through a bus side sleeve, and the II bus side circuit breaker is connected with the II bus through another bus side sleeve; i, connecting a female side circuit breaker with adjacent spaced overlines through adjacent spaced sleeves for outgoing lines, and outgoing lines through the adjacent spaced overlines; the circuit breaker at the side of the second female is connected with a main transformer inlet wire through a main transformer II female inlet wire side sleeve; two ends of the middle circuit breaker are respectively connected with the wiring between the II female side circuit breaker and II female incoming line side sleeves of the main transformer and between the I female side circuit breaker and the adjacent outgoing line spacing sleeves through wires.

Preferably, an HGIS outlet wire of a main transformer distribution string is led into a 330kV relay room building interval which is adjacently arranged through an HGIS pipeline bus, and the 330kV relay room building interval is free of HGIS equipment due to arrangement of the 330kV relay room building.

Preferably, the HGIS pipeline bus is led into a 330kV relay room building interval, an interval sleeve adjacent to an outgoing line of a main transformer distribution string is arranged at the 330kV relay room building interval, and the arrangement position of the adjacent interval sleeve of the outgoing line is in the same central line with a sleeve of a high-rise outgoing line in other interval double-layer outgoing lines.

Preferably, the adjacent spaced overlines are arranged above the 330kV relay room building spacing.

Preferably, the main transformer incoming line is connected to the other side of the HGIS equipment through adjacent spaced overlines, is connected with the adjacent spaced sleeves of the outgoing line through the suspension string leading-down, and the adjacent spaced sleeves of the outgoing line are connected with the II bus through the circuit breaker on the side of the II bus.

Preferably, A, B, C three phases of the I bus and the II bus are vertically arranged and are connected with adjacent spacing sleeves of the outgoing line.

Compared with the prior art, the utility model discloses following beneficial effect has: firstly, a main transformer is not connected with a bus II, and redundant space is increased; secondly, the number of circuit breakers is increased because a main transformer is not connected with a bus II; finally, the 330kV relay chamber interval overline can be fully arranged by utilizing the inverse interval of the HGIS pipeline bus without changing the C-shaped arrangement of the original HGIS equipment, the 3 rd main transformer and the II bus far away from the main transformer side are connected, and the operation reliability of the 330kV power distribution device is ensured. To sum up, the utility model discloses a 330kV HGIS equipment "C" type is arranged main change inlet wire structure and is not changed 330kV HGIS equipment "C" type arrangement mode, through changing 330kV HGIS pipeline generating line, the sleeve pipe is arranged, the overline sets up the mode, can realize 3 rd main change and II bus connection under the condition of unnecessary circuit breaker at the unnecessary space interval of increase, satisfy the required 3 rd main change of fortune dimension unit and get into through II generating line of main side circuit breakers of HGIS equipment and keep away from main change side, thereby when guaranteeing any transformer trouble, the 330kV generating line homoenergetic is guaranteed not to lose the electricity because of transformer trouble, ensure the reliable operation of 330kV outgoing line.

Drawings

FIG. 1 is a schematic diagram of bus connection of a main transformer entering II in a C-shaped arrangement of 330kV HGIS equipment;

FIG. 2 is a plan view of a space between a main transformer entering II bus in a C-shaped arrangement of 330kV HGIS equipment;

FIG. 3 is a sectional view of a gap between a main transformer entering II bus in a C-shaped arrangement of 330kV HGIS equipment;

FIG. 4 is a sectional view of the 330kV HGIS equipment with the arrangement of the interval outgoing lines in the C-shaped arrangement and the pouring of the interval outgoing lines into the adjacent interval outgoing lines;

FIG. 5 is a sectional view of an adjacent space for introducing an HGIS pipeline bus of 330kV HGIS equipment;

in the drawings: 1-I female side circuit breaker; 2-II female side circuit breakers; 3-medium circuit breaker; 4-busbar side bushing; 5-main transformer II bus inlet side sleeve; 6-adjacent spaced sleeves for outgoing lines; 7-adjacent spaced flying leads.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, the utility model provides an it arranges the main inlet wire mode that gets into II generating lines that becomes suitable for 330kV HGIS equipment "C" type, arranges, the overline setting through changing 330kV HGIS pipeline generating line, sleeve pipe to realize that the main change becomes and keep away from II bus connections that become the side of the owner. Taking the space between the main transformer and the II buses for entering into the inlet and outlet lines in the C-shaped arrangement of the 330kV HGIS equipment as an example, the space comprises a first bus side circuit breaker 1, a second bus side circuit breaker 2, an interrupt circuit 3, a bus side sleeve 4, a main transformer II bus inlet side sleeve 5, an outlet adjacent spacing sleeve 6 and an adjacent spacing overline 7. The first bus side circuit breaker 1 is connected with the first bus through a bus side sleeve 4, and the second bus side circuit breaker 2 is connected with the second bus through another bus side sleeve 4; i, a female side circuit breaker 1 is connected with adjacent spaced overlines 7 through adjacent spaced sleeves 6 for outgoing lines, and outgoing lines are conducted through the adjacent spaced overlines 7; the II-female side circuit breaker 2 is connected with a main transformer incoming line through a main transformer II-female incoming line side sleeve 5; two ends of the middle circuit breaker 3 are respectively connected between the II female side circuit breaker 2 and the II female incoming line side sleeve 5 of the main transformer and between the I female side circuit breaker 1 and the adjacent outgoing line spacing sleeve 6 through wires.

Referring to fig. 2-5, "C" type arranges main change inlet wire structure, will be qualified for the next round of competitions with main change and introduce adjacent 330kV relay room building interval of arranging through HGIS pipeline bus, 330kV relay room building interval is owing to arranging 330kV relay room building, does not have HGIS equipment. The HGIS pipeline bus is led into a 330kV relay room building interval, the interval sleeve 6 adjacent to the outgoing line of the main transformer distribution string is arranged at the interval, the arrangement position of the interval sleeve 6 adjacent to the outgoing line is in the same central line with the sleeves of other interval high-rise outgoing lines, so that the arrangement of the interval building cannot be influenced, a span line is arranged above the interval building, the sleeves are connected with the span line, and the 330kV outgoing line of the main transformer distribution string is realized through the span line.

The main transformer incoming line is connected to the other side of the HGIS equipment through an adjacent spaced crossover 7, and is connected with an outgoing line adjacent spaced sleeve 6 through a suspension series lead-down, and the outgoing line adjacent spaced sleeve 6 is connected with a second bus through a second bus side circuit breaker 2.

The A, B, C three phases of the I bus and the II bus are vertically arranged and are connected with the adjacent spacing sleeve 6 of the outgoing line.

To the transformer substation that includes 3 main transformers, 1 st, 2 main transformers are connected with I generating line that is close to main transformer side through I female side circuit breaker 1 from one side inlet wire of HGIS equipment, and 3 rd main transformer gets into through II female side circuit breaker 2 and keeps away from II generating lines that main transformer side.

The utility model discloses effectively solve 330kV HGIS equipment "C" type and arrange that main transformer can only get into I generating line in the scheme, if main transformer gets into II generating lines, need increase the space and separate or increase the circuit breaker, cause engineering area big, problem such as equipment cost height. The utility model provides high 330kV distribution device HGIS equipment "C" type arranges operational reliability, does not increase area more simultaneously, does not increase the circuit breaker more, has reduced the engineering and has levitated the difficulty because of area, problem such as equipment cost height.

The above-described preferred embodiments of the present invention are not intended to limit the present invention, and it should be understood by those skilled in the art that the present invention can be modified and replaced by other simple modifications and replacements without departing from the spirit and principle of the present invention, and these modifications and replacements also fall within the protection scope of the appended claims.

Claims

1. A main transformer incoming line structure of multi-main-transformer intensive HGIS equipment is characterized in that one incoming and outgoing line interval comprises a first bus side circuit breaker (1), a second bus side circuit breaker (2), an interrupt circuit (3), a bus side sleeve (4), a main transformer second bus incoming line side sleeve (5), outgoing line adjacent interval sleeves (6) and adjacent interval overlines (7); for a transformer substation comprising 3 groups of main transformers, leading wires from one side of HGIS equipment into a 1 st main transformer and a 2 nd main transformer, connecting the wires with a first bus close to the main transformer side through a first bus side circuit breaker (1), and leading the wires into a second bus far away from the main transformer side through a second bus side circuit breaker (2) from the 3 rd main transformer; the I bus side circuit breaker (1) is connected with the I bus through a bus side sleeve (4), and the II bus side circuit breaker (2) is connected with the II bus through another bus side sleeve (4); i, a female side circuit breaker (1) is connected with adjacent spaced overlines (7) through adjacent spaced sleeves (6) for outgoing lines, and outgoing lines are conducted through the adjacent spaced overlines (7); the II-bus side circuit breaker (2) is connected with a main transformer incoming line through a main transformer II-bus incoming line side sleeve (5); two ends of the middle circuit breaker (3) are respectively connected with the wiring between the II female side circuit breaker (2) and the II main transformer female wire inlet side sleeve (5) and between the I female side circuit breaker (1) and the adjacent outlet spacing sleeve (6) through wires.

2. The main transformer incoming line structure of the multi-main-transformer intensive HGIS equipment according to claim 1, wherein: leading the HGIS outlet wire which is matched with the main transformer in series into a 330kV relay room building interval which is adjacently arranged through an HGIS pipeline bus, wherein the 330kV relay room building interval does not have HGIS equipment due to arrangement of the 330kV relay room building.

3. The main transformer incoming line structure of the multi-main-transformer intensive HGIS equipment according to claim 2, wherein: the HGIS pipeline bus is led into a 330kV relay room building interval, an outgoing line adjacent interval sleeve (6) which is matched with a main transformer in series is arranged at the 330kV relay room building interval, and the arrangement position of the outgoing line adjacent interval sleeve (6) is on the same central line with a high-rise outgoing line sleeve in other interval double-layer outgoing lines.

4. The main transformer incoming line structure of the multi-main-transformer intensive HGIS equipment according to claim 2 or 3, wherein: and the adjacent spaced overlines (7) are arranged above the 330kV relay room building spacing.

5. The main transformer incoming line structure of the multi-main-transformer intensive HGIS equipment according to claim 4, wherein: the main transformer incoming line is connected to the other side of the HGIS equipment through adjacent spaced overlines (7) and is connected with the adjacent spaced sleeves (6) of the outgoing line through a suspension string leading-down, and the adjacent spaced sleeves (6) of the outgoing line are connected with the II buses through the II bus side circuit breakers (2).

6. The main transformer incoming line structure of the multi-main-transformer intensive HGIS equipment according to claim 1, wherein: the A, B, C three phases of the I bus and the II bus are vertically arranged and are connected with the adjacent spaced sleeve (6) of the outgoing line.