CN212033437U - Transformer substation framework and outgoing line interval arrangement structure - Google Patents

Abstract

The utility model discloses a transformer substation framework and an outgoing line interval arrangement structure, which comprises an outgoing line framework and outgoing line interval equipment, wherein the outgoing line framework comprises a steel pipe herringbone column framework and a steel pipe truss, three A-phase, B-phase and C-phase leads are respectively arranged on the steel pipe truss in two directions, and the three leads are connected with the outgoing line interval equipment; the outgoing line spacing device comprises a main isolating switch, a current transformer, a circuit breaker and a pair of separating switches; and a left cable trench and a right cable trench are respectively arranged at the outgoing side of the circuit breaker and the outgoing side of the right separation and separation switch. The structure can reduce land occupation, save the support cost and avoid line crossing.

Description

A substation structure and outgoing line spacing arrangement structure

technical field

The utility model relates to a framework structure of electric power equipment, in particular to a substation framework and an outgoing line interval arrangement structure.

Background technique

The electrical bay in the substation refers to a complete circuit, including circuit breakers, isolating switches, transformers, etc. An electrical unit with complete functions is called an interval, such as the interval between incoming and outgoing lines, and the interval of busbar equipment.

The traditional arrangement of the outgoing interval equipment in the current substation is to arrange the outgoing interval equipment (circuit breaker, disconnector, transformer, etc.) on the ground of the substation along the direction perpendicular to the outgoing frame, and set the circuit breaker and disconnector on the appearance frame. On the busbar side, set the transformer and arrester on the outlet side of the outlet frame. This traditional arrangement has the following shortcomings: In order to meet the safety distance requirements between the electrical appliances, these outgoing line spacing devices often occupy a certain floor area in the station; in order to facilitate maintenance, many lead wires, connecting lines and down leads are often required. It is easy to cross, and there are certain security risks.

Utility model content

The purpose of the utility model is to provide a substation structure and an outgoing line interval arrangement structure that can reduce land occupation, save support costs, and avoid line crossing.

In order to achieve the above object, the embodiment of the present utility model adopts the following technical solutions:

According to an embodiment provided by the present utility model, the present utility model provides a substation structure and an outgoing line spacing arrangement structure, including an outgoing line framework and an outgoing line spacing device, the outgoing line framework including a steel pipe herringbone frame and a steel pipe truss, the The steel pipe truss is provided with three conductors of phase A, phase B and phase C in both directions, and the three conductors are connected to the outlet interval equipment;

The outgoing line interval equipment includes a main isolating switch, a current transformer, a circuit breaker and a pair of sub-isolating switches; a left cable trench and a right cable trench are respectively arranged on the outgoing side of the circuit breaker and the outgoing side of the right sub isolating switch.

As a preferred technical solution of the present invention, a pair of disconnecting switches is a left disconnecting switch and a right disconnecting switch, which are respectively arranged on the side of the steel pipe truss column.

As a preferred technical solution of the present invention, the main isolating switch, current transformer, circuit breaker, left isolating switch and right isolating switch follow the herringbone frame to the steel pipe truss from left to right. Orientation arrangement.

As a preferred technical solution of the present invention, the main isolating switch, the current transformer, the circuit breaker, the left isolating switch and the right isolating switch are connected in series.

As a preferred technical solution of the present invention, the main isolation switch is arranged directly below the herringbone-shaped frame.

As a preferred technical solution of the present invention, wire insulator strings are arranged above the main isolation switch on the herringbone-shaped frame, and the distance between the suspension points of adjacent wire insulator strings is 2 meters.

As a preferred technical solution of the present invention, the distance between the suspension point of the insulator string and the ground is not less than 7.5m.

As a preferred technical solution of the present invention, both the herringbone column frame and the steel pipe truss are made of Q500C low-alloy high-strength structural steel.

The beneficial effects of the present utility model are:

In the substation structure and outgoing line interval arrangement structure of the utility model, the main disconnecting switch, the left sub-isolating switch, and the right sub-isolating switch are respectively arranged directly under the herringbone-shaped frame and the steel pipe truss, making full use of the lower part of the outgoing line frame. The space of the outgoing line of the substation is more compact, and the floor space of the spacer equipment is reduced on the premise of meeting the safety distance of the electrical equipment; The series connection of isolating switches and current transformers and the arrangement of cable trenches can avoid the problem of crossover of electrical lines in substations; at the same time, the outgoing line interval equipment includes circuit breakers, main isolating switches, sub isolating switches, current transformers, and outgoing line interval equipment. It is set on the outlet side of the herringbone-shaped outlet frame, and there is a series connection between the interval devices. The circuit is simple and clear, and it is also easy to maintain.

Description of drawings

Figure 1 is a schematic structural diagram of the present invention.

Among them, 1 is the steel pipe truss, 2 is the left A-phase wire, 3 is the left B-phase wire, 4 is the left C-phase wire, 5 is the right A-phase wire, 6 is the right B-phase wire, 7 is the right C-phase wire, and 8 is the right-phase wire. Right disconnect switch, 9 is the right cable trench, 10 is the left disconnect switch, 11 is the left cable trench, 12 is the circuit breaker, 13 is the current transformer, 14 is the main disconnect switch, 15 is the herringbone column type Frame, 16 is an insulator string.

Detailed ways

The present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

As shown in FIG. 1 , the structure of the utility model and the spaced arrangement structure of the outgoing lines include the outgoing line framework and the outgoing line spacing equipment, wherein, the outgoing line framework includes a herringbone-shaped structure 15 and a steel pipe truss 1, and the steel pipe truss 1 is arranged in two directions respectively. There are three conductors A-phase, B-phase, and C-phase. Three wires are connected to the outlet interval equipment, among which, the left A-phase wire 2, the left B-phase wire 3 and the left C-phase wire 4 are hooked around the steel pipe truss 1 from the left sub-isolation switch 10, the right A-phase wire 5, the right B-phase wire 4 The phase conductor 6 and the right C-phase conductor 7 are respectively connected to the right side disconnect switch 8 . The outgoing line spacing equipment includes a main isolation switch 14 , a current transformer 13 , a circuit breaker 12 , a left side isolation switch 10 , and a right side isolation switch 8 . The main disconnecting switch 14, current transformer 13, circuit breaker 12, left disconnecting switch 10, right disconnecting switch 8 are arranged in sequence along the outgoing direction perpendicular to the steel pipe truss, and the left cable trench 11 is arranged in the circuit breaker. On the outgoing side, the right cable trench 9 is arranged on the outgoing side of the right disconnector.

The main disconnecting switch 14 is arranged directly below the herringbone-shaped frame 15, and the left disconnecting switch 10 and the right disconnecting switch 8 are arranged on the side of the steel pipe truss column. Outgoing line interval equipment including the main disconnecting switch 14 , the current transformer 13 , the circuit breaker 12 , the left disconnecting switch 10 , and the right disconnecting switch 8 are connected in series.

The main disconnecting switch 14, the current transformer 13, the circuit breaker 12, the left disconnecting switch 10, and the right disconnecting switch 8 are arranged in sequence along the direction perpendicular to the outgoing wire frame. The current transformer 13, the circuit breaker 12, the left disconnecting switch 8 The isolating switch 10 and the right-side isolating switch 8 are arranged on the outgoing side of the herringbone-shaped frame 15 .

When the utility model is installed, the distance between the suspension points of the adjacent insulator strings 16 on the outgoing interval trusses is 2 meters, the substation is a 110kV substation, the distance between the suspension points of the insulator strings 16 and the ground is 7.5m, the herringbone-shaped frame and the steel pipe The materials used for the truss are all Q500C low-alloy high-strength structural steel.

The present invention is not limited to the above-mentioned embodiments. On the basis of the technical solutions disclosed in the present invention, those skilled in the art can make some technical features according to the disclosed technical content without creative work. Replacement and deformation, these replacements and deformations are within the protection scope of the present invention.

Claims (8)

1. A substation frame and outgoing line spacing arrangement structure, it is characterized in that, comprise outgoing wire frame and outgoing wire interval equipment, described outgoing wire frame comprises steel pipe herringbone frame (15) and steel pipe truss (1), described steel pipe truss ( 1) There are three wires of A-phase, B-phase and C-phase respectively on the upper bidirectional, and the three wires are connected with the outlet interval equipment; The outgoing line interval equipment includes a main isolating switch (14), a current transformer (13), a circuit breaker (12) and a pair of sub-isolating switches; the outgoing side of the circuit breaker (12) and the outgoing side of the right sub-isolating switch are respectively arranged There are left cable trench (11) and right cable trench (9). 2. A substation frame and outgoing line spacing arrangement structure according to claim 1, characterized in that, a pair of isolating switches is a left isolating switch (10) and a right isolating switch (8), which are respectively arranged in Steel tube truss (1) column side. 3. A substation structure and outgoing line spacing arrangement structure according to claim 2, characterized in that the main disconnecting switch (14), the current transformer (13), the circuit breaker (12), the left disconnecting switch (10) and the right side isolating switch (8) are arranged in sequence from left to right along the direction from the herringbone column frame (15) to the steel pipe truss (1). 4. A substation structure and outgoing line spacing arrangement structure according to claim 2, characterized in that the main disconnecting switch (14), the current transformer (13), the circuit breaker (12), the left disconnecting switch There is a series connection between (10) and the right side isolating switch (8). 5. A substation structure and an outgoing line spacing arrangement structure according to claim 1, characterized in that, the main isolation switch (14) is arranged directly below the herringbone-shaped structure (15). 6. A substation frame and outgoing line spacing arrangement structure according to claim 1, characterized in that, a wire insulator string (16) is arranged above the herringbone column frame (15), and adjacent wire insulator strings (16) ) at a distance of 2 meters from the suspension point. 7 . The substation structure and outgoing line spacing arrangement structure according to claim 6 , wherein the distance between the suspension point of the insulator string ( 16 ) and the ground is not less than 7.5m. 8 . 8 . The substation frame and the outgoing line spacing arrangement structure according to claim 1 , wherein the herringbone column frame ( 15 ) and the steel pipe truss ( 1 ) are made of Q500C low-alloy high-strength structural steel. 9 .

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