CN201398029Y - Main wiring structure capable of reducing scope of power failure of 220kVGIS substation - Google Patents

Abstract

The utility model discloses a main wiring structure capable of reducing the scope of the power failure of a 220kVGIS substation. The main wiring structure can reduce the scope of the power failure ofthe 220kVGIS substation when the 220kVGIS substation is overhauled and expanded. The structure of the main wiring structure is as follows: the main wiring structure comprises double buses, and each bus is provided with a pair of high-voltage isolators.

Description

A kind of main electrical scheme structure that reduces 220kVGIS transformer station power failure scope

Technical field

The utility model relates to the 220kV transformer station that power distribution equipment adopts the GIS combined electrical apparatus, relates in particular to the main electrical scheme structure of a kind of 220kVGIS of minimizing transformer station power failure scope.

Background technology

Present GIS (gas-insulated metal-enclosed switchgear), it is Cubicle Gas-Insulated Switchgear, claim again " sulphur hexafluoride gas insulated metal enclosed swit chgear ", be with elements combination such as circuit breaker, isolating switch, earthed switch, high speed grounding switch, current transformer, voltage transformer and buses and be closed in the metal shell, fill the SF6 gas-insulated and form a kind of combined high-voltage electrical equipment.

(AIS) compares with conventional substation, and GIS has following advantage:

1, compact conformation takes up an area of and economizes.The 220kVGIS floor space only is about 10% of AIS, and this is particularly important in the cities and towns of land for building costliness and intensive load center.

2, electromagnetic radiation is little, the influence of Natural environment factors such as not contaminated and rain, salt fog, and therefore, GIS is particularly suitable for industrial pollution and awful weather and high altitude localities.

3, easy for installation, maintenance workload is few, the time between overhauls(TBO) is long.GIS forms with whole or some unit, can shorten on-the-spot installation period greatly.

The common double-bus mode of the many employings of the 220kV main electrical scheme of 220kVGIS transformer station and 110kV main electrical scheme at present, and GIS equipment is in maintenance and when enlarging, and the original part of neighbouring device should be cut off the power supply and ground connection, when mother's connection equipment is done withstand voltage test, article two, bus all needs dead electricity, thereby causes full station to have a power failure.

Summary of the invention

The purpose of this utility model is exactly in order to solve the technological deficiency that above-mentioned 220kVGIS transformer station exists, to have proposed a kind of main electrical scheme structure that can reduce the minimizing 220kVGIS transformer station power failure scope of transformer station's power failure scope when maintenance of 220kVGIS transformer station and enlarging.

For achieving the above object, the technical solution of the utility model is:

A kind of main electrical scheme structure that reduces 220kVGIS transformer station power failure scope, it comprises double-bus, described every bus is provided with a pair of high pressure spacer assembly.

Described spacer assembly is the bus isolation switch.

When the utility model adopts the double-bus main wiring mode for 220kV and 110kV transformer station, 2 groups of isolation switchs are installed on every bus.After above architecture advances, advantage applies of the present utility model is:

When mother's connection equipment of 220kVGIS transformer station need be done withstand voltage test, by the operation isolation switch, can avoid full station to have a power failure, guarantee that half bus can normally move.

Description of drawings

Fig. 1 is present common double bus scheme mode;

Fig. 2 is a structural representation of the present utility model.

Wherein, 1. bus, 2. bus isolation switch, 3.1# main transformer inlet wire at interval, 4.2# main transformer inlet wire at interval, 5.3# main transformer inlet wire at interval, 6. female connection at interval, 7. outlet I at interval, 8. outlet II at interval, 9. outlet III at interval, 10. outlet IV is at interval.

Embodiment

The utility model is described in further detail below in conjunction with accompanying drawing and embodiment.

Fig. 1 is an existing 220kVGIS substation double-bus syndeton.

Among Fig. 2, the utility model is installed the bus isolation switch 2 of pair of series respectively on every bus 1 in existing double-bus structure.Article two, bus 1 is provided with 1# main transformer interval 3,2# main transformer interval 4, and 3# main transformer interval 5, bus interval 6, outlet I interval 7, outlet II interval 8, outlet III interval 9, outlet IV interval 10, GIS equipment is all adopted at all intervals.

When the female connection of needs maintenance at interval 6 time, only need the isolation switch in the empty frame 2 is opened, the right side bus has a power failure, and this moment, the left side bus can continue charging operation.

Claims (2)

1. main electrical scheme structure that reduces 220kVGIS transformer station power failure scope, it comprises double-bus, it is characterized in that, described every bus is provided with a pair of high pressure spacer assembly.

2. the main electrical scheme structure that reduces 220kVGIS transformer station power failure scope as claimed in claim 1 is characterized in that described spacer assembly is the bus isolation switch.

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