CN108418215A - Auxiliary single-line diagram method - Google Patents
Auxiliary single-line diagram method Download PDFInfo
- Publication number
- CN108418215A CN108418215A CN201810332251.8A CN201810332251A CN108418215A CN 108418215 A CN108418215 A CN 108418215A CN 201810332251 A CN201810332251 A CN 201810332251A CN 108418215 A CN108418215 A CN 108418215A
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- China
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- unit
- sections
- public
- load
- bus bar
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000010586 diagram Methods 0.000 title claims abstract description 15
- 230000005611 electricity Effects 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000037452 priming Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
Classifications
-
- H02J3/005—
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/26—Arrangements for eliminating or reducing asymmetry in polyphase networks
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase networks
Abstract
The invention discloses a kind of auxiliary single-line diagram methods, middle pressure station service electrical system includes two units, respectively the first unit and the second unit, it is set in two sections for every unit and presses working bus bar, it is set for the first unit and the second unit and presses public busbar in two sections, tapped in the station-service working bus bar of different units；Wherein, single-row configuration wind turbine is the important load in middle pressure station service electrical system, will the set reformation in medium pressure station service electrical system be connected to the middle pressure working bus bar of every unit, public load is connected to the public busbar of medium pressure；Unit load is configured using 1 principles of N, and public load is configured by 0 principles of N.The present invention configures the unit load in factory's electric system using 1 principles of N, and public load is configured by 0 principles of N, factory's electric system normal operation when guarantee is out of order.
Description
Technical field：
The present invention relates to power domain more particularly to auxiliary single-line diagram method fields.
Background technology：
In the prior art, the middle pressure station service configuration of load situation of power plant is as follows：Electrically driven feed pump is priming pump, two machines
Group sets one altogether；Condensate pump, enclosed cooling water circulating pump are two, and a fortune one is standby；The fortune one of coal pulverizer five is standby；First air
Machine, pressure fan, air-introduced machine are single-row configuration；Other loads such as subsidiary engine water circulating pump, air compressor machine, rainwater pump, rubber conveyer
Etc. being public load.
Primary air fan, pressure fan, air-introduced machine are single-row with postponing, from technological process, when unit operation, and single-row three
Big wind turbine needs overall startup, and indispensable, just to apparatus body and power supply reliability, more stringent requirements are proposed for this.To improve
Power supply reliability is needed single-row subsidiary engine centralized arrangement on the same middle pressure active section of unit, in this way in the event of another active section
When barrier, steam turbine load does not influence unit and completely sends out, and boiler also can not cause compressor emergency shutdown by the form of load shedding.But for
Process system electrically driven feed pump start without the spare method of operation and pressure fan, air-introduced machine, the single-row configuration of primary air fan it is special
The configuration of situation, factory's electric system is complicated, can not ensure public load and unit equipment normal operation when being out of order.
Therefore, defect in the prior art is started without the spare method of operation for process system electrically driven feed pump
And the special circumstances of the single-row configuration of pressure fan, air-introduced machine, primary air fan, the configuration of factory's electric system is complicated, can not ensure event
Zhang Shi factories electric system normal operation.
Invention content：
The purpose of the present invention is to provide a kind of auxiliary single-line diagram methods, and the unit load in factory's electric system is used N-1
Principle configures, and public load is configured by N-0 principles, factory's electric system normal operation when guarantee is out of order.
The present invention is implemented by following technical solution：
In a first aspect, the present invention provides a kind of auxiliary single-line diagram method, including：
Middle pressure station service electrical system includes two units, respectively the first unit and the second unit, and two are set for every unit
Working bus bar is pressed in section, sets for first unit and the second unit and presses public busbar in two sections, is tapped in the factory of different units
With working bus bar, and it is to press public busbar that interconnection switch is respectively set in described two sections；
Public busbar will be pressed to be connected to respectively in two sections of every unit in described two sections and press working bus bar, in described
The single-row configuration wind turbine of station service electrical system is pressed all to access one section in described two sections in pressure working bus bar, wherein described single-row
It is the important load in medium pressure station service electrical system to configure wind turbine, by the set reformation in medium pressure station service electrical system
It is connected to the middle pressure working bus bar of every unit, public load is connected to the public busbar of medium pressure；
The unit load is configured using N-1 principles, and the public load is configured by N-0 principles, wherein the unit is
The single-row configuration of subsidiary engine of 600MW grades.
Further, pressure working bus bar is divided into A section busbares of work and the B sections of busbares that work in described two sections.
Further, the single-row configuration wind turbine in medium pressure station service electrical system is connected to A sections of busbares of work；By described two
Public busbar is pressed to be respectively connected to B sections of busbares of work of first unit and the second unit in section.
Further, the single-row configuration wind turbine includes primary air fan, pressure fan and air-introduced machine.
Further, two units connect one and play standby transformer, and the described standby symmetrical tap of transformer is in described
On the station-service working bus bar of two units, first unit and the second unit are separately connected a Tai Gao factories transformer.
Advantages of the present invention：
1, the unit load in factory's electric system is configured using N-1 principles, public load is configured by N-0 principles, ensures
Factory's electric system normal operation when failure.
2, middle pressure common section is separately provided in full factory's public load, and single-row configuration wind turbine is uniformly connected in every A sections of unit
Working bus bar is pressed, the middle public busbar of pressure, which is connected in B of Unit section, presses working bus bar, the balancing the load after subsidiary engine can be kept single-row.
3, the setting of middle pressure common section strengthens the unit of unit, not reason convenient for being managed concentratedly to public load
One unit station service electrical system failure influences the normal operation of other units, to cooperation unit maintenance, shutdown and maintenance the machine
Auxiliary switchgear etc. belonging to group is more convenient.
Description of the drawings：
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Obtain other attached drawings according to these attached drawings.
A kind of wiring schematic diagram for auxiliary single-line diagram method that Fig. 1 is provided by the embodiment of the present invention.
Specific implementation mode：
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without creative efforts
Embodiment shall fall within the protection scope of the present invention.
Embodiment one
Referring to Fig. 1, embodiment one provides a kind of auxiliary single-line diagram method, including：
Middle pressure station service electrical system includes two units, respectively the first unit 1 and the second unit 2, is set for every unit
Working bus bar is pressed in two sections, wherein the first unit 1, which is arranged in two sections, presses working bus bar 10A, 10B, the second unit 2 is arranged in two sections
Working bus bar 20A, 20B are pressed, sets for the first unit 1 and the second unit 2 and presses public busbar 01A, 01B in two sections, wherein 01A draws
From in the first unit 1 press working bus bar 10B, 01B quoted from the second unit 2 press working bus bar 20B, public busbar 01A with it is public
Busbar 01B setting interconnection switches and busbar 10.
Public busbar will be pressed to be connected to tap respectively in the station-service working bus bar of different units, by middle pressure station service system in two sections
The single-row configuration wind turbine 3 of system accesses pressure working bus bar in two units 10A and 20A and uses, will be public in middle pressure station service electrical system
Load 4, which is connected in two sections, presses public busbar.
The unit steam turbine load 7 is configured using N-1 principles, and the boiler load 4 is configured by N-0 principles, wherein described
Unit is the single-row configuration of subsidiary engine of 600MW grades.
Unit load in factory's electric system is configured using N-1 principles, for example the steam turbine in unit load uses N-1 principles
It configures (except protective load and DC load and uninterruptible power supply), i.e., it is full should not to influence unit when an element failure
Hair allows unit load shedding or shutdown when the very low twin failure of probability of happening；Public load is configured by N-0 principles, such as
The public loads such as boiler are configured using N-1 principles, i.e., an element failure unit is with regard to load shedding；Deduster category boiler is attached
Equipment is also treated by boiler load.Therefore, it is ensured that factory's electric system normal operation when a certain element is out of order.
Preferably, pressure working bus bar is divided into A section busbares of work and the B sections of busbares that work in two sections.
Preferably, the single-row configuration wind turbine in middle pressure station service electrical system is connected to A sections of busbares of work；It is public by being pressed in two sections
Busbar is respectively connected to B sections of busbares of A sections of busbares of work and work.
Referring to Fig. 1,1 corresponding middle pressure working bus bar of the first unit is divided into 10B sections of busbares of 10A sections of busbares of work and work,
Second unit, 2 corresponding middle pressure working bus bar is respectively the 20B sections of busbares of 20A sections of busbares and work that work；Wherein, single-row configuration wind
Machine 3 is altogether 2 parts, is connected to 20A sections of busbares of 10A sections of busbares of work and work respectively；Wherein, 01A in the first unit 1 quoted from pressing
Working bus bar 10B, 01B press working bus bar 20B, public busbar 01A and public busbar 01B that contact is arranged quoted from the second unit 2
Switch and busbar 10.Public load 4 is altogether 2 parts, is connected to public 01A sections of busbar and public 01B sections of busbar respectively.
Specifically, in the present embodiment, the main transformer 5 of the first unit 1 and the second unit 2 selects 750MVA.First unit 1 and
Two units 2 are followed by through main transformer boosting to the power distribution equipment of 500kV.The generator of first unit 1 and the second unit 2 selects 660MW.
Wherein, the public load 4 in middle pressure station service electrical system is often referred to subsidiary engine water circulating pump, air compressor machine, rainwater pump, adhesive tape
Conveyer.
Wherein, the low pressure such as unit load is often referred to steam turbine load, six coal pulverizers and machine, stove becomes, dedusting becomes, air-cooled change are dry
Formula transformer.
Wherein, single-row configuration wind turbine 3 includes primary air fan, pressure fan and air-introduced machine.
Preferably, one standby transformer 6 is set in the unit, plays standby transformer 6 and symmetrically taps in the station-service of two units
On working bus bar 10A, 10B, 20A, 20B, the first unit 1 and the second unit 2 are separately connected a Tai Gao factories transformer 7.Play standby become
Depressor connects the power distribution equipment of 110kV.
Two units set 1 and play standby transformer with capacity with the high factory's transformer of unit, can simplify auxiliary single-line diagram, reduce
The accident rate of HV Auxiliary Transformer so that transformer Ground arrangement is simply clear.
Wherein, high factory's transformer 7 is that high-pressure system turns dedicated transformer of the low-pressure system for Auxiliary System in Power Plant.Unit transformer
Depressor is the transformer of unit productive power.The transformer of stand-by power supply is provided standby electricity depressor, has been equivalent to standby transformer
6。
Advantages of the present invention：
1, the steam turbine load in factory's electric system is configured using N-1 principles, boiler load is configured by N-0 principles, ensures
Factory's electric system normal operation when failure.
2, middle pressure common section is separately provided in full factory's public load, and single-row configuration wind turbine is uniformly connected in every A sections of unit
Working bus bar is pressed, the middle public busbar of pressure, which is connected in B of Unit section, presses working bus bar, the balancing the load after subsidiary engine can be kept single-row.
3, the setting of middle pressure common section and interconnection switch strengthens the list of unit convenient for being managed concentratedly to public load
Member, not one unit station service electrical system failure of reason influence the normal operation of other units, to cooperation unit maintenance, shut down with
And maintenance affiliated auxiliary switchgear of the unit etc. is more convenient.
The above is merely preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (5)
1. a kind of auxiliary single-line diagram method, which is characterized in that
Middle pressure station service electrical system includes two units, respectively the first unit and the second unit, is set in two sections for every unit
Working bus bar is pressed, sets for first unit and the second unit and presses public busbar in two sections, is tapped in the station-service work of different units
Make busbar, and is to press public busbar that interconnection switch is respectively set in described two sections；
Public busbar will be pressed to be connected to respectively in two sections of every unit in described two sections and press working bus bar, by medium pressure factory
The single-row configuration wind turbine of electricity system all accesses one section in pressure working bus bar in described two sections, wherein the single-row configuration
Wind turbine is the important load in medium pressure station service electrical system, and the set reformation in medium pressure station service electrical system is connected to
Public load is connected to the public busbar of medium pressure by the middle pressure working bus bar of every unit；
The unit load is configured using N-1 principles, and the public load is configured by N-0 principles, wherein the unit is 600MW
The single-row configuration of subsidiary engine of grade.
2. auxiliary single-line diagram method according to claim 1, which is characterized in that
Working bus bar is pressed to be divided into B sections of busbares of A sections of busbares of work and work in described two sections.
3. auxiliary single-line diagram method according to claim 2, which is characterized in that
Single-row configuration wind turbine in medium pressure station service electrical system is connected to A sections of busbares of work；Public mother will be pressed in described two sections
Line is respectively connected to B sections of busbares of work of first unit and the second unit.
4. auxiliary single-line diagram method according to claim 1, which is characterized in that
The single-row configuration wind turbine includes primary air fan, pressure fan and air-introduced machine.
5. auxiliary single-line diagram method according to claim 1, which is characterized in that
Two units connect one and play standby transformer, and the described standby symmetrical tap of transformer is in the station-service of two units
On working bus bar, first unit and the second unit are separately connected a Tai Gao factories transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810332251.8A CN108418215A (en) | 2018-04-13 | 2018-04-13 | Auxiliary single-line diagram method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810332251.8A CN108418215A (en) | 2018-04-13 | 2018-04-13 | Auxiliary single-line diagram method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108418215A true CN108418215A (en) | 2018-08-17 |
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ID=63135590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810332251.8A Pending CN108418215A (en) | 2018-04-13 | 2018-04-13 | Auxiliary single-line diagram method |
Country Status (1)
| Country | Link |
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| CN (1) | CN108418215A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110854924A (en) * | 2019-11-04 | 2020-02-28 | 中国能源建设集团华东电力试验研究院有限公司 | One-time voltage-on synchronous phase-checking linkage switching inspection system and inspection method for electrical system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203522182U (en) * | 2013-09-11 | 2014-04-02 | 河北省电力勘测设计研究院 | Medium voltage station service system in auxiliary engine single-row configuration of two units in thermal power plant |
-
2018
- 2018-04-13 CN CN201810332251.8A patent/CN108418215A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203522182U (en) * | 2013-09-11 | 2014-04-02 | 河北省电力勘测设计研究院 | Medium voltage station service system in auxiliary engine single-row configuration of two units in thermal power plant |
Non-Patent Citations (1)
| Title |
|---|
| 蒋本一: "《电力系统规划》", 30 April 1993 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110854924A (en) * | 2019-11-04 | 2020-02-28 | 中国能源建设集团华东电力试验研究院有限公司 | One-time voltage-on synchronous phase-checking linkage switching inspection system and inspection method for electrical system |
| CN110854924B (en) * | 2019-11-04 | 2021-03-30 | 中国能源建设集团华东电力试验研究院有限公司 | One-time voltage-on synchronous phase-checking linkage switching inspection system and inspection method for electrical system |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180817 |
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| RJ01 | Rejection of invention patent application after publication |