220KV-arranged HGIS power distribution device

Abstract

The invention relates to the technical field of 220KV HGIS power distribution, in particular to a 220KV HGIS power distribution device. A common bus a sleeve BSG1 and a common bus b sleeve BSG2 are arranged in parallel, a bus a and a bus b are arranged on the outer side of the common bus a sleeve BSG1 and the outer side of the common bus b sleeve BSG2 respectively, and an outgoing line a and an outgoing line b are arranged on the outer side of the bus a and the outer side of the bus b respectively. The outgoing line loops of the outgoing line a and the outgoing line b are in an upper and lower double-layer outgoing line type; on the premise that safe and reliable operation is guaranteed, opposite-side arrangement of two outgoing lines is achieved, one outgoing line is a low-position outgoing line, the other outgoing line is a reverse high-overline high-position outgoing line, the occupied area of a 220kV power distribution device area is remarkably reduced, the logistics cost is reduced, the investment cost is saved, and extension construction is convenient and reliable.

Description

technical field [0001] The invention relates to the technical field of 220KV HGIS power distribution, in particular to a 220KV HGIS power distribution device. Background technique [0002] In recent years, in power system substations, affected by factors such as environment, floor space and economic indicators, more and more composite gas-insulated switchgears (HGIS) have been used in 220kV power distribution devices; [0003] The composite gas insulated combined switchgear (HGIS) adopts the open suspension pipe bus for the bus in the 220kV power distribution device, and the circuit breaker (GCB), isolating switch (DS), earthing switch (ES), fast Primary equipment such as earthing switch (FES) and current transformer (CT) are enclosed in a metal shell and filled with SF6 gas insulation. The busbar earthing switch, arrester and voltage transformer can be built into the HGIS equipment or externally used. Open equipment. [0004] Among them, HGIS equipment does not include bu...

AI Technical Summary

Problems solved by technology

[0005] In the layout of conventional 220kV power distribution devices, HGIS power distribution devices are generally arranged in double rows; the layout method is: all outgoing line intervals are arranged on the side close to the wall, and they are arranged in a row, while the incoming line interval, bus coupler interval and busbar PT interval It is arranged on the opposite side of the outgoing line interval, and a segmented interval is arranged in the middle, that is, one row is arranged for the outgoing line interval, and one row is arranged for other intervals. The layout effect diagram is as attached figure 1 As shown; in the HGIS double-row layout scheme, in order to meet the needs of 220kV outgoing lines, all the outgoing line intervals can only be arranged on the side close to the wall, and the rest of the intervals are arranged on the opposite side of the outgoing line interval. When the number of 220kV outgoing line circuits is large, After the incoming lines, bus couplers, PTs, etc. of the remaining intervals are all arranged, there will still be many outgoing intervals with no equipment on the opposite side, resulting in a waste of floor space

At the same time, because the horizontal dimension of the power distribution device must meet the needs of all outgoing circuits, the amount of steel for the 220kV power distribution device structure is wasted, which in turn makes the total investment cost of the substation higher and the social and economic benefits poor.

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