CN103840379A - PT1 type power distribution station - Google Patents
PT1 type power distribution station Download PDFInfo
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- CN103840379A CN103840379A CN201410124330.1A CN201410124330A CN103840379A CN 103840379 A CN103840379 A CN 103840379A CN 201410124330 A CN201410124330 A CN 201410124330A CN 103840379 A CN103840379 A CN 103840379A
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- 239000003990 capacitor Substances 0.000 claims description 13
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 230000001264 neutralization Effects 0.000 claims description 3
- 230000001131 transforming Effects 0.000 description 6
- 230000000875 corresponding Effects 0.000 description 4
- 238000009429 electrical wiring Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 241001183012 Modified Vaccinia Ankara virus Species 0.000 description 1
- 102100001134 SDHAF2 Human genes 0.000 description 1
- 108060007337 SDHAF2 Proteins 0.000 description 1
- 230000000903 blocking Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Abstract
The invention provides a PT1 type power distribution station. Two inlet wires are communicated with a transformer through a 10 kV load switch, the transformer converts the10 kV of inlet wire voltage to 0.4 kV to be output, the two inlet wires further are communicated with a 0.4 kV bus through a 0.4 kV switch, and the 0.4 kV bus is provided with a plurality of outlet wire switches which control one or two outlet wires to be connected or disconnected respectively. The 10 kV load switch is arranged on an SF6 ring network cabinet, and the 0.4 kV switch and the outlet wire switches are arranged on a breaker of a GGD cabinet. According to the PT1 type power distribution station, primary equipment of the power distribution station is replaced on the premise of not changing the original scale and main wire connecting mode, health level and safe operation level of equipment can be conveniently improved, workload of overhaul and maintenance is reduced, and power supply reliability is improved.
Description
Technical field
The present invention relates to power distribution field, particularly a kind of PT1 type power distribution station.
Background technology
To shopping centre and residential building when power supply, user generally requires higher to power supply reliability.Some power distribution stations that put into operation in the eighties, move a distribution transforming that capacity is 400kVA, and 10kV side is on-load switch inlet wire, and 0.4kV wiring adopts single bus scheme.
As shown in Figure 1, two-way inlet wire is communicated to transformer through on-load switch S1, fuse, this transformer is exported after 10kV primary voltage is converted to 0.4kV, and be further communicated with 0.4kV bus by 0.4kV switch S 2, this 0.4kV bus has six outlet switch S3, and each outlet switch S3 controls connection or the disconnection of one or two outlet; In this example, be provided with altogether 11 outlets.
Fig. 2 is the floor plan of existing power distribution station, and high voltage load switch uses FN3-10 high voltage knife, controls being communicated with or disconnection between 10kV inlet wire and transformer; In low-pressure chamber, arrange corresponding switch and equipment with PGL2 cabinet as 0.4kV low voltage incoming line cabinet, 0.4kV low-pressure line-outgoing cabinet etc.
But equipment is outmoded in above-mentioned existing power distribution station, without standby redundancy, power supply reliability is poor, is difficult to meet growing electricity consumption requirement.And power distribution station to the power supply of shopping centre and residential building is limited by often in place, be difficult to expansion scale, transformation difficulty is large.
Summary of the invention
The object of this invention is to provide a kind of PT1 type power distribution station, not changing under the prerequisite of original scale and main wiring mode, power distribution station primary equipment is changed, to improve equipment power supply reliability.
In order to achieve the above object, technical scheme of the present invention is to provide a kind of PT1 type power distribution station, and it comprises:
Two-way inlet wire is communicated to transformer through 10kV on-load switch, this transformer is exported after 10kV primary voltage is converted to 0.4kV, and being further communicated with 0.4kV bus by 0.4kV switch, this 0.4kV bus is divided into multiple outlet switchs and controls separately connection or the disconnection of one or two outlet.
Preferably, 10kV on-load switch is arranged at SF6 ring main unit, and described 0.4kV switch, outlet switch are the circuit breakers that is arranged at GGD cabinet.
Preferably, described 10kV on-load switch one end is connected with 10kV inlet wire, this 10kV on-load switch other end is by after fuse, current transformer point of two-way, leads up to capacity earth, and another road is connected to leading-out terminal and is connected to transformer by outlet cable.
Preferably, described 10kV on-load switch one end is connected with 10kV inlet wire, and this 10kV on-load switch other end is by Fen San road after current transformer, and two-way is connected to respectively electric capacity and the lightning arrester of ground connection, and another road is connected to leading-out terminal.
Preferably, the neutral ground form of described transformer is direct ground connection; The 10kV side of this transformer is provided with one group of lightning arrester.
Preferably, one group of SF6 ring main unit that 10kV on-load switch is set is positioned at hyperbaric chamber;
One arranges the 0.4kV low voltage incoming line cabinet of 0.4kV service entrance switch, and four arrange the 0.4kV low-pressure line-outgoing cabinet of 2 outlet switchs separately; Transformer is by the 0.4kV low voltage incoming line cabinet of low pressure copper busbar access low-pressure chamber.
Preferably, for totally ten one outlets are set, in all eight outlet switchs, make wherein five outlet switchs control separately two outlets, outlet of another outlet switch control; Or, make wherein four outlet switchs control separately two outlets, another three outlet switchs are controlled an outlet separately; Or, make wherein three outlet switchs control separately two outlets, another five outlet switchs are controlled an outlet separately.
Preferably, the one group of 0.4kV capacitor that is connected to described 0.4kV bus by capacitor switch is also set, and the 0.4kV low-voltage capacitor box that this capacitor is installed is positioned in low-pressure chamber.
Preferably, in SF6 ring main unit, be provided with SF6 warning device.
Compared with prior art, PT1 type power distribution station provided by the invention, do not changing under the prerequisite of original scale and main wiring mode, power distribution station primary equipment is changed, SF6 on-load switch is set and is equipped with SF6 warning device, be conducive to improve the general level of the health and the safety operation level of equipment, the workload of reduce maintenance, safeguarding, improves power supply reliability.
Brief description of the drawings
Fig. 1 is the electrical wiring schematic diagram of existing power distribution station;
Fig. 2 is the floor plan of existing power distribution station;
Fig. 3 is 10kV electrical wiring schematic diagram in PT1 type power distribution station of the present invention;
Fig. 4 is 0.4kV electrical wiring schematic diagram in PT1 type power distribution station of the present invention;
Fig. 5 is the floor plan of power distribution station of the present invention.
Embodiment
As shown in Figure 3,4, the invention provides a kind of PT1 type power distribution station (PT1 type, the i.e. looped network power distribution station with 1 station power distribution transformer and 10kV outlet), two-way inlet wire is communicated to transformer through 10kV on-load switch S1, this transformer is exported after 10kV primary voltage is converted to 0.4kV, and be further communicated with 0.4kV bus by 0.4kV switch S 2, and this 0.4kV bus has six outlet switch S3, and each outlet switch S3 controls connection or the disconnection of one or two outlet; In this example, be provided with altogether 11 outlets.
10kV on-load switch is positioned at hyperbaric chamber, is equipped with 2 of 10kV line SF6 ring main units, 1 of 10kV distribution transforming SF6 ring main unit.
In SF6 ring main unit as shown in Figure 3, a switch cubicle uses following device mode to arrange: wherein one end of on-load switch is connected with 10kV inlet wire, this on-load switch other end is leaded up to capacity earth after by fuse, current transformer, and another road is connected to leading-out terminal and is further connected to transformer by outlet cable; In each switch cubicle, be also provided with SF6 pressure indicator, capacitance voltage indicating device, display device for short circuit, three position switch auxiliary contact, gas pressure auxiliary contact, fuse auxiliary contact, etc.
Two other switch cubicle uses following another kind of device arrangements mode: on-load switch is by current transformer Hou Fen tri-tunnels, be connected to respectively electric capacity and the lightning arrester of leading-out terminal and ground connection, can pass through leading-out terminal connection transformer, or be connected to meet different wiring needs from the device in other switch cubicles.
Current period short circuit current level with reference to early stage equipment select, 10kV short circuit current level press 20kA consider.Preferably the parameter of on-load switch is as follows: rated voltage 12 kV, rated current 630 A, nominal short-circuit capacity 346 MVA, specified drop-out current 20 kA, moving drop-out current peak value 50 kA, 4 seconds heat-stable current 20 kA of stablizing.
In addition, in conjunction with primary equipment transformation, corresponding line cable is done to reconfiguration, all used flame retardant cable.For example, adopt ZA-YJV-8.7/10-3X70 cable at 10kV side inlet wire, the outlet of distribution transforming 0.4kV side adopts low pressure copper bus-bar.Each position in storehouse primary equipment ground connection is used 5*40 band iron, and is connected with indoor ground connection main line.
10kV/0.4kV transformer is positioned at distribution transforming chamber, is used for changing 10kV primary voltage into 0.4kV output, and transformer neutral point ground connection form is direct ground connection.The 10kV inlet wire side of this transformer is provided with one group of 10kV inlet wire lightning arrester, plays lightning protection effect.
As shown in Figure 4, the switch of all 0.4kV sides all adopts the switch cubicle that is positioned at 0.4kV switch gear room, and each switch all adopts circuit breaker, can be communicated with or disconnect corresponding outlet or its power pack.In this power distribution station of the present invention, be equipped with 1 of 0.4kV low voltage incoming line cabinet, be used for arranging 1 0.4kV service entrance switch S2, make the 0.4kV low-pressure side of transformer be connected to 0.4kV bus by this 0.4kV service entrance switch S2, current transformer.
Also be equipped with 4,0.4kV low-pressure line-outgoing cabinet, maximum 8 the outlet switch S3 and the current transformer that are connected to 0.4kV bus can be set.For totally ten one outlets are set, in this example, can combine according to actual needs the outlet switch of respective numbers, control connection or the disconnection of one or two outlet by each outlet switch.The mode of for example Fig. 1, adopts six outlet switchs wherein: make five outlet switchs connect separately two outlets, another outlet switch connects outlet, i.e. a 5*2+1.Or, can also adopt seven outlet switchs to build 4*2+3, or adopt eight outlet switchs to build the outlet method of 3*2+5.
In addition, be equipped with 1 of 0.4kV low-voltage capacitor box, a group capacitor (120kVar) can be installed and carry out reactive power compensation, make capacitor be connected to 0.4kV bus by capacitor switch.
Be the floor plan of power distribution station of the present invention as shown in Figure 5, one group of SF6 ring main unit 4 is positioned at hyperbaric chamber; In low-pressure chamber, be equipped with 6 GGD cabinets, P1 cabinet is the 0.4kV low voltage incoming line cabinet that 0.4kV service entrance switch is set, and P2-P5 cabinet is the 0.4kV low-pressure line-outgoing cabinet that 2 outlet switchs are set separately, and P6 cabinet is 0.4kV low-voltage capacitor box; Auxiliary in this example be furnished with SF6 warning device 1 and overlap.Transformer is communicated with respectively the relevant device of hyperbaric chamber and low-pressure chamber by corresponding turnover cable.
According to the filthy rank of site, the creepage of current period engineering equipment selected by III level than distance, and 10V and following equipment are creepage than considering by 31mm/kV apart from outdoor, and the indoor 25mm/kV that presses considers.Below newly-increased each electrical room and protection screen screen cabinet, and Cable Reformation, related cable interlayer, floor through walls, wall, cabinet, dish place has cable cavern and gap to carry out fireproof blocking when newly-increased.And adopt fire prevention band to paste or painting fireproof paint the cable sheath within the scope of each shutoff place both sides 1m.
As shown in Fig. 2, Fig. 5, in this example, can in Nei Dui hyperbaric chamber, existing site, transform with low pressure indoor equipment, without other expropriation of land.
In sum, PT1 type power distribution station provided by the invention, do not changing under the prerequisite of original scale and electrical wiring mode, power distribution station primary equipment is changed, SF6 on-load switch is set and is equipped with SF6 warning device, be conducive to improve the general level of the health and the safety operation level of equipment, the workload of reduce maintenance, safeguarding, improves power supply reliability.
Although content of the present invention has been done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to limitation of the present invention.Read after foregoing those skilled in the art, for multiple amendment of the present invention and substitute will be all apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (9)
1. a PT1 type power distribution station, is characterized in that, comprises:
Two-way inlet wire is communicated to transformer through 10kV on-load switch, this transformer is exported after 10kV primary voltage is converted to 0.4kV, and being further communicated with 0.4kV bus by 0.4kV switch, this 0.4kV bus is divided into multiple outlet switchs and controls separately connection or the disconnection of one or two outlet.
2. PT1 type power distribution station as claimed in claim 1, is characterized in that,
10kV on-load switch is arranged at SF6 ring main unit, and described 0.4kV switch, outlet switch are the circuit breakers that is arranged at GGD cabinet.
3. PT1 type power distribution station as claimed in claim 1, is characterized in that,
Described 10kV on-load switch one end is connected with 10kV inlet wire, and this 10kV on-load switch other end is by after fuse, current transformer point of two-way, leads up to capacity earth, and another road is connected to leading-out terminal and is connected to transformer by outlet cable.
4. PT1 type power distribution station as claimed in claim 1, is characterized in that,
Described 10kV on-load switch one end is connected with 10kV inlet wire, and this 10kV on-load switch other end is by Fen San road after current transformer, and two-way is connected to respectively electric capacity and the lightning arrester of ground connection, and another road is connected to leading-out terminal.
5. PT1 type power distribution station as claimed in claim 1, is characterized in that,
The neutral ground form of described transformer is direct ground connection; The 10kV side of this transformer is provided with one group of lightning arrester.
6. PT1 type power distribution station as claimed in claim 1, is characterized in that,
One group of SF6 ring main unit that 10kV on-load switch is set is positioned at hyperbaric chamber;
One arranges the 0.4kV low voltage incoming line cabinet of 0.4kV service entrance switch, and four arrange the 0.4kV low-pressure line-outgoing cabinet of 2 outlet switchs separately; Transformer is by the 0.4kV low voltage incoming line cabinet of low pressure copper busbar access low-pressure chamber.
7. PT1 type power distribution station as claimed in claim 6, is characterized in that,
For totally ten one outlets are set, in all eight outlet switchs, make wherein five outlet switchs control separately two outlets, outlet of another outlet switch control; Or, make wherein four outlet switchs control separately two outlets, another three outlet switchs are controlled an outlet separately; Or, make wherein three outlet switchs control separately two outlets, another five outlet switchs are controlled an outlet separately.
8. PT1 type power distribution station as claimed in claim 6, is characterized in that,
The one group of 0.4kV capacitor that is connected to described 0.4kV bus by capacitor switch is also set, and the 0.4kV low-voltage capacitor box that this capacitor is installed is positioned in low-pressure chamber.
9. the PT1 type power distribution station as described in claim 2 or 3 or 4 or 6, is characterized in that,
In SF6 ring main unit, be provided with SF6 warning device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410124330.1A CN103840379A (en) | 2014-03-31 | 2014-03-31 | PT1 type power distribution station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410124330.1A CN103840379A (en) | 2014-03-31 | 2014-03-31 | PT1 type power distribution station |
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| Publication Number | Publication Date |
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| CN103840379A true CN103840379A (en) | 2014-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410124330.1A Pending CN103840379A (en) | 2014-03-31 | 2014-03-31 | PT1 type power distribution station |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008055918A (en) * | 2006-08-29 | 2008-03-13 | Meidensha Corp | Control method for dc feeder system |
| CN101577400A (en) * | 2009-06-15 | 2009-11-11 | 江苏省电力公司泰州供电公司 | Chamber type liaison transforming plant reduced by 0.4kV from 20kV/10KV |
| CN103401170A (en) * | 2013-08-12 | 2013-11-20 | 四川大尔电气有限责任公司 | Box type transformer station |
| CN203813221U (en) * | 2014-03-31 | 2014-09-03 | 国网上海市电力公司 | PT1 type power distribution station |
-
2014
- 2014-03-31 CN CN201410124330.1A patent/CN103840379A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008055918A (en) * | 2006-08-29 | 2008-03-13 | Meidensha Corp | Control method for dc feeder system |
| CN101577400A (en) * | 2009-06-15 | 2009-11-11 | 江苏省电力公司泰州供电公司 | Chamber type liaison transforming plant reduced by 0.4kV from 20kV/10KV |
| CN103401170A (en) * | 2013-08-12 | 2013-11-20 | 四川大尔电气有限责任公司 | Box type transformer station |
| CN203813221U (en) * | 2014-03-31 | 2014-09-03 | 国网上海市电力公司 | PT1 type power distribution station |
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Application publication date: 20140604 |
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