CN202094485U

CN202094485U - Arrangement structure of 1,000MW unit nonsegregated phase buses

Info

Publication number: CN202094485U
Application number: CN2011201978028U
Authority: CN
Inventors: 樊潇; 周建; 尹晓东; 张洪霞; 于青; 张斌
Original assignee: Shandong Electric Power Engineering Consulting Institute Corp Ltd
Current assignee: Shandong Electric Power Engineering Consulting Institute Corp Ltd
Priority date: 2011-06-13
Filing date: 2011-06-13
Publication date: 2011-12-28
Anticipated expiration: 2021-06-13

Abstract

The utility model provides an arrangement structure of 1000MW unit nonsegregated phase buses, which has two indoor arrangement schemes: an rotary layer arrangement or a middle layer arrangement, the common point of the two indoor arrangement schemes is that at the outer part of an A line, a starting/standby transformer is connected with at least two groups of nonsegregated phase buses which enter the indoor through the wall-through holes of a turbine house, and are respectively connected with at least one unit switch cabinet, the unit switch cabinet is also respectively connected with a corresponding unit station service transformer, supporting points are arranged on the civil work supporting column of the A line in the turbine house, and the nonsegregated phase buses are arranged along the wall of the A line by utilizing the supporting points. The differences between the two arrangement schemes are that the middle layer arrangement model, has an arrangement section around plant supporting columns, and has more crosses when being matched with the process. The arrangement structure disclosed by the utility model has the advantages that the crossed design of a foundation is reduced; after the indoor arrangement, building materials can be saved, the operation environment can be further improved, and the accident probability is reduced.

Description

The 1000MW unit is the arrangement of case enclosed busbar altogether

Technical field

The utility model relates to the 1000MW unit arrangement of case enclosed busbar altogether.

Background technology

The case enclosed busbar is the bus equipment of loaded current in the electric specialty altogether, owing to need to consider the requirement of charged distance, so generally case enclosed busbar cross section is bigger altogether, for example this engineering cross section is that 900mm * 550mm (has different dimensionss according to different ampacitys, size only refers to illustrate herein), scheme according to power plant electricity consumption wiring, startup need be given the station-service high voltage source (6kV of two units, 10kV) do standby, station-service high pressure (the 6kV of startup to two unit, 10kV) switch cubicle draws by case enclosed busbar altogether and connects, two sections distances that are total to the case enclosed busbar are longer, and span is to 2# unit station-service high voltage power distribution chamber by 1# unit station-service high voltage power distribution chamber.Under the present case, altogether in the construction of case enclosed busbar often in the following way:

1, the case enclosed busbar designs outside the A row altogether, and shore supports is established on A row exterior domain ground, and the case enclosed busbar almost runs through whole factory building along the A row altogether, needs the strong point of setting a lot.And facility is intensive under the A row other places, as circulating water pipeline; Oil, feed channel; Conduit line; The basis of transformer equipment etc., and the size on basis is bigger, and therefore the basic engineering of the support column of case enclosed busbar is often collided with the basis of above-mentioned pipe trench and equipment and is conflicted difficult arrangement and complexity altogether.

2, the case enclosed busbar is installed in the open air as electric equipment altogether, and wind and weather requires than indoor height the creepage distance of equipment, charged distance etc.

3, the outdoor running environment of equipment is poor, and equipment overhaul cycle is short.Be unfavorable for operation maintenance.Especially bigger to the seashore salt fog area or area, IV level heavily contaminated district, the probability that the outdoor operation of equipment has an accident is higher than indoor layout.

Summary of the invention

The utility model provides reasonable in design, arranges the indoor arrangement of common case enclosed busbar simple, that running environment is good, and provide two kinds of schemes available for overcoming the prior art deficiency.

The technical scheme that its technical problem that solves the utility model adopts is:

Scheme one:

A kind of 1000MW unit is the arrangement of case enclosed busbar altogether, outside the A row, startup is connected with at least one group of case enclosed busbar altogether, the case enclosed busbar is by running layer in the steam turbine building wall-through hole inlet chamber altogether, be connected with switch cubicle with at least one unit respectively, unit also connects with corresponding station transformer respectively with switch cubicle, is provided with the strong point on steam turbine building A row wall civil engineering pillar, and the case enclosed busbar utilizes the strong point to arrange along A row wall altogether.

A kind of 1000MW unit is the arrangement of case enclosed busbar altogether, outside the A row, startup connects at least one group of case enclosed busbar altogether, the case enclosed busbar is by intermediate layer in the steam turbine building wall-through hole inlet chamber altogether, be connected with switch cubicle with at least one unit respectively, corresponding unit also connects with corresponding station transformer with switch cubicle, on steam turbine building A row wall civil engineering pillar, be provided with the strong point, two groups of common case enclosed busbars utilize the strong point to arrange along A row wall, and the case enclosed busbar is provided with around the factory building pillar and arranges section altogether in the scope of arranging along A row wall.

Described altogether case enclosed busbar comprise not every mutually altogether the case enclosed busbar with every case enclosed busbar altogether mutually.

Described switch cubicle electric pressure is 6kV or 10kV.

The beneficial effects of the utility model are:

1, indoor layout has at first been cancelled A row external equipment support column, has reduced basic cross-over design.

2, improved the running environment of equipment, the busbar arrangement of the longer distance of span can increase the occurrence probability of accidents such as short circuit out of doors, and indoor cloth postpone is bigger to the enhancement of environment of operation, and accident probability reduces.

3, the equipment of indoor layout can be saved the size of case enclosed busbar altogether by the various electrical distances of indoor requirement effect.

Description of drawings

Fig. 1 is the common box bus floor map.

Fig. 2 is a common box bus A-A sectional schematic diagram.

1. case enclosed busbars altogether among the figure, 2.1# station transformer, 3.2# station transformer, 4. startup, 5. switch cubicle IA, 6. switch cubicle IB, 7. switch cubicle II A, 8. switch cubicle II B, 9.A row.

Embodiment

Be described further below in conjunction with drawings and Examples.

Embodiment one

Outside A row 9,1# station transformer 2,2# station transformer 3, startup 4 are drawn two groups of case enclosed busbars 1 altogether respectively, by running layer in the steam turbine building wall-through hole inlet chamber, be connected with high pressure (6kV, 10kV) station-service switch cubicle IA5, switch cubicle IB6, switch cubicle II A 7, switch cubicle II B8 respectively, in steam turbine building, be provided with the strong point on the A row 9 civil engineering pillars, support case enclosed busbar 1 arrangement altogether and install.Be provided with 1# station transformer 2 in the 1# unit high pressure station-service switchgear house, be provided with 2# station transformer 3 in the 2# unit high pressure station-service switchgear house, altogether case enclosed busbar 1 set up distance from 1# unit high pressure station-service switchgear house to 2# unit high pressure station-service switchgear house, the pipeline of the above technology arrangement of layer significantly reduces owing to turn round, and therefore case enclosed busbar 1 arranges that installation is comparatively convenient altogether.In force, reduced the cross-over design of the outer foundations of civil work of A row, indoor cloth postpone is bigger to the enhancement of environment of operation, and accident probability reduces.The use amount of while economical with materials.

Embodiment two

Outside A row 9,1# station transformer 2,2# station transformer 3, startup 4 are drawn two groups of case enclosed busbars 1 altogether respectively, by intermediate layer in the steam turbine building wall-through hole inlet chamber, be connected with high pressure (6kV, 10kV) station-service switch cubicle IA5, switch cubicle IB6, switch cubicle II A 7, switch cubicle II B8 respectively, in steam turbine building, be provided with the strong point on the A row 9 civil engineering pillars, support case enclosed busbar 1 arrangement altogether and install.Be provided with 1# station transformer 2 in the 1# unit high pressure station-service switchgear house, be provided with 2# station transformer 3 in the 2# unit high pressure station-service switchgear house, altogether case enclosed busbar 1 set up distance from 1# unit high pressure station-service switchgear house to 2# unit high pressure station-service switchgear house, case enclosed busbar 1 longest distance is to 2# unit high pressure station-service switchgear house by 1# unit high pressure station-service switchgear house altogether, because intermediate layer process pipe comparatively dense, therefore correspondingly cooperate with technology is professional, revised main fuel tank in the steam turbine building, the installation site of jet chimney etc. parts, and case enclosed busbar 1 has one section to arrange around factory building A row 9 posts altogether.Reduced the cross-over design of the outer foundations of civil work of A row, indoor cloth postpone is bigger to the enhancement of environment of operation, and accident probability reduces.The use amount of while economical with materials.

Claims

1. the 1000MW unit arrangement of case enclosed busbar altogether, it is characterized in that, outside the A row, startup is connected with at least one group of case enclosed busbar altogether, altogether the case enclosed busbar is connected with switch cubicle with at least one unit respectively by running layer in the steam turbine building wall-through hole inlet chamber, and unit also connects with corresponding station transformer respectively with switch cubicle, be provided with the strong point on steam turbine building A row wall civil engineering pillar, the case enclosed busbar utilizes the strong point to arrange along A row wall altogether.

2. the 1000MW unit arrangement of case enclosed busbar altogether, it is characterized in that, outside the A row, startup connects at least one group of case enclosed busbar altogether, the case enclosed busbar is by intermediate layer in the steam turbine building wall-through hole inlet chamber altogether, be connected with switch cubicle with at least one unit respectively, corresponding unit also connects with corresponding station transformer with switch cubicle, on steam turbine building A row wall civil engineering pillar, be provided with the strong point, two groups of common case enclosed busbars utilize the strong point to arrange along A row wall, and the case enclosed busbar is provided with around the factory building pillar and arranges section altogether in the scope of arranging along A row wall.

3. 1000MW unit according to claim 1 and 2 is the arrangement of case enclosed busbar altogether, it is characterized in that, described case enclosed busbar altogether comprise not every mutually altogether the case enclosed busbar with every case enclosed busbar altogether mutually.

4. 1000MW unit according to claim 1 and 2 is the arrangement of case enclosed busbar altogether, it is characterized in that described switch cubicle electric pressure is 6KV or 10kV.