CN205944748U - AIS equipment and 110kV distribution device that GIB generating line is mixed - Google Patents

Abstract

The utility model discloses a 110kV power distribution device mixed with AIS equipment and a GIB bus. It includes AIS equipment and GIB busbar. The AIS equipment includes circuit breakers in open layout, outgoing line disconnectors, current transformers, voltage transformers and lightning arresters. The GIB busbar includes bushings insulated with SF6, busbars and busbar isolation The switch, the circuit breaker, isolating switch, current transformer, voltage transformer, lightning arrester, inlet and outlet bushing, busbar and busbar isolating switch are connected through a conductor medium to form a complete circuit. The power distribution device of the utility model adopts the circuit breaker, the outlet isolating switch and the transformer in the AIS power distribution device, and the SF6 insulated busbar and the busbar isolating switch in the GIS power distribution device, which saves more than 40% of the area occupied by the AIS power distribution device. The layout is flexible, which improves the reliability and maintainability of the busbar part; compared with the GIS power distribution device, it saves more than 40% of the equipment cost, and the expansion, maintenance and replacement of the main equipment are flexible.

Description

A 110kV power distribution device mixed with AIS equipment and GIB bus

technical field

The utility model belongs to the technical field of power transmission and transformation engineering, in particular to a 110kV power distribution device mixed with AIS equipment and GIB bus bars.

Background technique

110kV outdoor power distribution devices are generally divided into two types according to the insulation form of power distribution equipment: air-insulated AIS and SF6 gas-insulated GIS. It has advantages in terms of flexibility in expansion, maintenance, and replacement. The disadvantage is that there are many devices, complex wiring, large floor space, and heavy workload for operation and maintenance; GIS power distribution devices are highly integrated, saving land and equipment. It has advantages in layout flexibility, reliability, and maintainability, but it is relatively expensive; and AIS power distribution devices are suitable for rural areas with low land prices and flat plain areas, and GIS is suitable for cities with high land prices and basic treatment For mountainous areas with a large amount of land, the applicability of both is poor for suburban and hilly areas where the land price and basic treatment volume are between the two.

Contents of the invention

The purpose of this utility model is to provide a 110kV power distribution device in which the AIS equipment and the GIB busbar are mixed to solve the above-mentioned deficiencies in the background technology.

The technical solution adopted by the utility model is: a 110kV power distribution device mixed with AIS equipment and GIB busbar, including AIS equipment and GIB busbar, and the AIS equipment includes an open circuit breaker, an outlet disconnector, a current transformer, Voltage transformers and lightning arresters, the GIB bus includes SF6-insulated bushings, busbars and busbar disconnectors, the circuit breaker, disconnectors, current transformers, voltage transformers, lightning arresters, incoming and outgoing bushings, busbars and busbars The isolating switch forms a complete circuit through the conductor medium connection.

Further, the phase B of the bushing, the bus disconnector and the center of the bus are coaxially arranged.

The utility model AIS equipment + GIB bus power distribution device adopts the circuit breaker, outlet isolating switch and transformer in the AIS power distribution device and the SF6 insulated bus and bus isolating switch (called GIB) in the GIS power distribution device. On the basis of the two types of power distribution devices learn from each other, only the busbar and the busbar isolating switch are insulated with SF6; compared with the AIS power distribution device, it saves more than 40% of the area, and the layout is flexible, which improves the reliability and maintainability of the busbar part; compared with the GIS The power distribution device saves more than 40% of the equipment cost, and the expansion, maintenance and replacement of the main equipment are flexible. The power distribution device provides a wider selection of suitable solutions for the construction of power grids and power plants.

Description of drawings

Fig. 1 is the structural representation of the utility model.

In the figure: 1-circuit breaker; 2-outlet isolating switch; 3-current transformer; 4-voltage transformer;

detailed description

The utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments to facilitate a clear understanding of the utility model, but they do not limit the utility model.

As shown in Figure 1, the utility model includes AIS equipment and GIB busbar, and the AIS equipment includes an open independent layout, an air-insulated circuit breaker 1, an outgoing line isolation switch 2, a current transformer 3, a voltage transformer 4 and a lightning arrester 5 , the GIB bus includes SF6 insulated bushing 6, bus 7 and bus isolating switch 8, the air-insulated circuit breaker 1, isolating switch 2, current transformer 3, voltage transformer 4, lightning arrester 5, incoming and outgoing wire sleeves Tube 6, busbar 7 and busbar isolating switch 8 are connected by conductor media to form a complete circuit.

In the above scheme, phase B of the bushing 6, the busbar isolation switch 8 and the center of the busbar 7 are coaxially arranged, and the longitudinal dimension is only the diameter of the busbar barrel, which reduces the GIB footprint, simplifies the equipment structure, reduces the cost, and facilitates Construction and design have a high fault tolerance rate.

The utility model replaces the air-insulated busbar and busbar isolating switch part of the AIS power distribution device with a large area, low reliability and poor maintainability with GIB, which greatly reduces the longitudinal size and can be omitted in combination with the hoisting scheme. Compared with the AIS power distribution device, the internal maintenance road of the power distribution device reduces the occupied area by more than 40%. At the same time, the SF6 insulation part does not increase much, and the equipment cost only increases by 15% compared with the AIS power distribution device, and saves 40% compared with the GIS power distribution device. Through the comparison of the whole life cycle and the economic sensitivity analysis, the economic efficiency of the suburban and hilly areas where the cost of land acquisition and earthwork processing is more than 500,000 yuan/mu, and all overhead lines are better than that of AIS power distribution device and GIS power distribution device. In addition, part of the expansion of AIS equipment does not require a full shutdown of the bus, which is more flexible than GIS power distribution devices; the bus and bus isolating switches have achieved SF6 insulation, and their reliability and maintainability are better than those of AIS power distribution devices; the use of GIB bus occupies an area The advantages of low cost and flexible bending can be combined with project requirements to achieve multi-directional outlets and reduce project investment; power distribution devices can be arranged in single row of circuit breakers or in double rows of circuit breakers, and the wiring of busbars can also have multiple wiring methods. Combined with the overall station The layout is more flexible and saves space. Figure 1 is the section diagram of the outgoing line interval when the circuit breakers are arranged in a single row. For the layout of the figure, the section diagram of the main transformer incoming line interval and the section interval diagram of the section interval are also AIS equipment and GIB The layout of the busbars.

When the busbar adopts the single-busbar three-section wiring method, the busbars are arranged in two columns before and after, and the circuit with the same name is connected to two sections of different busbars. The wiring form is clear and concise, the operation is simple, and the reliability is equivalent to that of double-bus wiring. It is suitable for suburban areas where there are many outgoing lines with the same name and strong grid connections. Due to the adoption of GIB busbar, the longitudinal dimension of the busbar is reduced from 10m to 1.5m for the AIS power distribution device; the maintenance road between the circuit breaker and the current transformer is canceled. The longitudinal dimension is only 20m, which is 46.7% compressed compared to the longitudinal dimension of 37.5m of the conventional AIS power distribution device. The occupied area is reduced from 155×37.5=5812.5㎡ to 152×20=3040㎡, a reduction of 47.7%. In terms of equipment cost, the AIS power distribution device including circuit breaker intervals costs about 1 million yuan for a single bay, and the AIS equipment + GIB bus power distribution device only increases the equipment cost of the busbar and busbar isolation switch by about 150,000 yuan per interval, an increase of about 15%. .

The content not described in detail in this specification belongs to the prior art known to those skilled in the art.

Claims (2)

1. a kind of AIS equipment is mixed with GIB bus 110kV power distribution equipment it is characterised in that：Female including AIS equipment and GIB Line, it is mutual that described AIS equipment includes the chopper (1) of open type arrangement, outlet disconnecting switch (2), current transformer (3), voltage Sensor (4) and spark gap (5), described GIB bus includes sleeve pipe (6), bus (7) and the bus isolating switch insulating using SF6 (8), described chopper (1), disconnecting switch (2), current transformer (3), voltage transformer (4), spark gap (5), line set Pipe (6), bus (7) and bus isolating switch (8) connect and compose complete loops by conductive medium.

2. a kind of AIS equipment according to claim 1 is mixed with GIB bus 110kV power distribution equipment it is characterised in that： The B phase of described sleeve pipe (6), bus isolating switch (8) and bus (7) center three are coaxially arranged.