CN106253450A - A kind of power-supply system for thermal power plant's auxiliary control system - Google Patents
A kind of power-supply system for thermal power plant's auxiliary control system Download PDFInfo
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- CN106253450A CN106253450A CN201610744982.4A CN201610744982A CN106253450A CN 106253450 A CN106253450 A CN 106253450A CN 201610744982 A CN201610744982 A CN 201610744982A CN 106253450 A CN106253450 A CN 106253450A
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- power
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- auxiliary
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- 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
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/02—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which an auxiliary distribution system and its associated lamps are brought into service
Abstract
The invention discloses a kind of power-supply system for thermal power plant's auxiliary control system, described auxiliary control system comprises several subsystems, and power-supply system comprises: power cabinet, and it is provided with major and minor two-way main power inlet wire；Main first power module assembly, it is connected with main main power inlet wire, and the voltage of main power source is converted into the first voltage powered to subsystems；Main second source modular assembly, it is connected with main main power inlet wire, and the voltage of main power source is converted into the second voltage powered to subsystems；Secondary first power module assembly, it is connected with vice president's electric power incoming line, and the voltage of auxiliary power is converted into the first voltage powered to subsystems；Secondary second source modular assembly, it is connected with vice president's electric power incoming line, and the voltage of auxiliary power is converted into the second voltage powered to subsystems.The present invention redistributes the power supply of auxiliary control system, improves auxiliary control system and controls the reliability of power supply.
Description
Technical field
The present invention relates to power-supply system, particularly to a kind of power-supply system for thermal power plant's auxiliary control system.
Background technology
Auxiliary control system electric power-feeding structure is similar, as a example by a unit condensate polishing treatment control system, and a unit precision processing
Set-up of control system has a power cabinet (01CRA01), and this power cabinet designs major and minor two-way 220VAC main power inlet wire, by No. 1
Owner's Factory Building security personnel's EMCC 1A section 10BMB09H interval and No. 2 owner's Factory Building security personnel's EMCC 2A section 20BMB09H intervals provide,
Two-way power supply opens distribution through isolation skies at different levels after delivering to a unit condensate polishing treatment PLC power cabinet back terminal block, is 1,2
Number unit precision processing PLC each switch board fastener base plate, 48VDC and 24VDC power module provide 220VAC primary source, additionally electricity
Being provided with an automatic duplicate supply switching device in the cabinet of source, major-minor two-way incoming power is one after automatic duplicate supply switching device
Unit condensate polishing treatment operator station and field device power.
The 220VAC inlet wire of a former unit condensate polishing treatment main 48VDC power module take from 7ZK sky in power cabinet open, secondary
In the 220VAC inlet wire of 48VDC power module takes from power cabinet, 7FK sky is opened, and passes through after power module is converted to 48VDC power supply
Diode-isolated, Parallel opertation to a unit condensate polishing treatment each PLC machine cabinet, on-the-spot each electromagnetic valve control chamber, as two
The inquiry power supply of unit condensed water precision processing system each DI point.A former unit condensate polishing treatment main 24VDC power module
220VAC inlet wire is taken from 8FK sky in 8ZK sky is opened, the 220VAC inlet wire of secondary 24VDC power module takes from power cabinet in power cabinet and is opened,
By diode-isolated after power module is converted to 24VDC power supply, Parallel opertation is to an each PLC machine of unit condensate polishing treatment
Cabinet, mainly as two unit condensed water precision processing systems each two-wire system transducer voltage and the driving voltage of DO point on the spot.
In prior art, there are two units and share the phenomenon of a set of 48VDC, 24VDC power module in auxiliary control system, if
In operation, a unit is powered and is occurred extremely, to cause power supply short circuit fault, it will cause whole DC power supplier fault, thus
Have influence on the operation of an other unit control system, drastically influence the safe operation of auxiliary control system.
Also exist: once main road incoming power loses, it is impossible to be switched to stand-by power supply simultaneously, will result in this system server and
Field device power interrupts, and causes auxiliary control network data to interrupt, causes host computer data to lose monitoring, have a strong impact on each auxiliary control system
Safe operation.
Summary of the invention
It is an object of the invention to provide a kind of power-supply system for thermal power plant's auxiliary control system, redistribute auxiliary control system
Power supply, improves auxiliary control system and controls the reliability of power supply.
In order to realize object above, the present invention is achieved by the following technical solutions:
A kind of power-supply system for thermal power plant's auxiliary control system, described auxiliary control system comprises several subsystems, is characterized in,
Comprise:
Power cabinet, it is provided with major and minor two-way main power inlet wire；
Main first power module assembly, it is connected with main main power inlet wire, is converted into the voltage of main power source to subsystems
First voltage of power supply；
Main second source modular assembly, it is connected with main main power inlet wire, is converted into the voltage of main power source to subsystems
Second voltage of power supply；
Secondary first power module assembly, it is connected with vice president's electric power incoming line, is converted into the voltage of auxiliary power to subsystems
First voltage of power supply；
Secondary second source modular assembly, it is connected with vice president's electric power incoming line, is converted into the voltage of auxiliary power to subsystems
Second voltage of power supply.
Several described subsystems are: the first unit, the second unit and synergic system.
Described master's the first power module assembly comprises:
First main power source module, for being converted into the first voltage powered to the first unit by the voltage of main power source；
Second main power source module, for being converted into the first voltage powered to the second unit by the voltage of main power source；And,
3rd main power source module, for being converted into the first voltage powered to synergic system by the voltage of main power source.
Described main second source modular assembly comprises:
4th main power source module, for being converted into the second voltage powered to the first unit by the voltage of main power source；
5th main power source module, for being converted into the second voltage powered to the second unit by the voltage of main power source；And,
6th main power source module, for being converted into the second voltage powered to synergic system by the voltage of main power source.
Described pair the first power module assembly comprises:
First auxiliary power module, for being converted into the first voltage powered to the first unit by the voltage of auxiliary power；
Second auxiliary power module, for being converted into the first voltage powered to the second unit by the voltage of auxiliary power；And,
3rd auxiliary power module, for being converted into the first voltage powered to synergic system by the voltage of auxiliary power.
Described secondary second source modular assembly comprises:
Fourth officer power module, for being converted into the second voltage powered to the first unit by the voltage of auxiliary power；
5th auxiliary power module, for being converted into the second voltage powered to the second unit by the voltage of auxiliary power；And,
6th auxiliary power module, for being converted into the second voltage powered to synergic system by the voltage of auxiliary power.
It is provided with double-power supply switching device between described major and minor two-way main power inlet wire.
The present invention compared with prior art, has the advantage that
1, each auxiliary control system 24VDC, 48VDC power supply is thoroughly independent, and abnormal not interfering with occurs in a unit power-supply system
Remaining unit properly functioning so that control system power supply scattered risks, improves the safety and reliability of equipment.
2, it is provided with double-power supply switching device, it is ensured that two-way inlet wire reliably switches, once primary power cource fault, can guarantee that normal
It is switched to stand-by power supply work so that equipment will not dead electricity malfunction on the spot.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of a kind of power-supply system for thermal power plant's auxiliary control system of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, by describing a preferably specific embodiment in detail, the present invention is further elaborated.
As it is shown in figure 1, a kind of power-supply system for thermal power plant's auxiliary control system, this auxiliary control system comprises several subsystems
System, power-supply system comprises: power cabinet, and it is provided with major and minor two-way main power inlet wire；Main first power module assembly, it is total with main
Electric power incoming line is connected, and the voltage of main power source is converted into the first voltage powered to subsystems；Main second source module group
Part, it is connected with main main power inlet wire, and the voltage of main power source is converted into the second voltage powered to subsystems；Secondary first
Power module assembly, it is connected with vice president's electric power incoming line, and the voltage of auxiliary power is converted into first powered to subsystems
Voltage；Secondary second source modular assembly, it is connected with vice president's electric power incoming line, is converted into the voltage of auxiliary power to subsystems
Second voltage of power supply.In the present embodiment, the voltage 220V of major and minor power supply.
In a particular embodiment, several described subsystems are: the first unit, the second unit and synergic system.
Above-mentioned master's the first power module assembly comprises: the first main power source module 11, for being changed by the voltage of main power source
Become the first voltage powered to the first unit；Second main power source module 12, for being converted into the voltage of main power source to the second machine
First voltage of group power supply；And, the 3rd main power source module 13, power to synergic system for the voltage of main power source is converted into
The first voltage.
Above-mentioned main second source modular assembly comprises: the 4th main power source module 21, for being changed by the voltage of main power source
Become the second voltage powered to the first unit；5th main power source module 22, for being converted into the voltage of main power source to the second machine
Second voltage of group power supply；And, the 6th main power source module 23, power to synergic system for the voltage of main power source is converted into
The second voltage.
First, second, third and fourth and five main power source module be connected on the circuit of main power source by air switch respectively.
Above-mentioned pair the first power module assembly comprises: the first auxiliary power module 31, for being changed by the voltage of auxiliary power
Become the first voltage powered to the first unit；Second auxiliary power module 32, for being converted into the voltage of auxiliary power to the second machine
First voltage of group power supply；And, the 3rd auxiliary power module 33, power to synergic system for the voltage of auxiliary power is converted into
The first voltage.
Above-mentioned secondary second source modular assembly comprises: fourth officer power module 41, for being changed by the voltage of auxiliary power
Become the second voltage powered to the first unit；5th auxiliary power module 42, for being converted into the voltage of auxiliary power to the second machine
Second voltage of group power supply；And, the 6th auxiliary power module 43, power to synergic system for the voltage of auxiliary power is converted into
The second voltage.
First, second, third and fourth and five auxiliary power module be connected on the circuit of auxiliary power by air switch respectively.
In the present embodiment, the first voltage is 48VDC, and the second voltage is 24VDC, main first power module assembly and secondary first
Power module assembly passes through diode-isolated after being converted to 48VDC power supply, the on-the-spot each electromagnetic valve control chamber of Parallel opertation, and conduct
The inquiry power supply of secondary Ore-controlling Role DI point.Main second source modular assembly and secondary second source modular assembly are converted to 24VDC power supply
Afterwards by diode-isolated, as the driving voltage of secondary Ore-controlling Role DO point.
It is provided with double-power supply switching device 5 between above-mentioned major and minor two-way main power inlet wire.Specifically, dual power supply switching dress
It is set to APC device, it is ensured that two-way inlet wire reliably switches, once primary power cource fault, can guarantee that and be normally switched to stand-by power supply work,
Make the equipment on the spot will not dead electricity malfunction.
In sum, a kind of power-supply system for thermal power plant's auxiliary control system of the present invention, redistribute the electricity of auxiliary control system
Source, improves auxiliary control system and controls the reliability of power supply..
Although present disclosure has been made to be discussed in detail by above preferred embodiment, but it should be appreciated that above-mentioned
Description is not considered as limitation of the present invention.After those skilled in the art have read foregoing, for the present invention's
Multiple amendment and replacement all will be apparent from.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (7)
1., for a power-supply system for thermal power plant's auxiliary control system, described auxiliary control system comprises several subsystems, its feature
It is, comprises:
Power cabinet, it is provided with major and minor two-way main power inlet wire；
Main first power module assembly, it is connected with main main power inlet wire, is converted into the voltage of main power source to subsystems
First voltage of power supply；
Main second source modular assembly, it is connected with main main power inlet wire, is converted into the voltage of main power source to subsystems
Second voltage of power supply；
Secondary first power module assembly, it is connected with vice president's electric power incoming line, is converted into the voltage of auxiliary power to subsystems
First voltage of power supply；
Secondary second source modular assembly, it is connected with vice president's electric power incoming line, is converted into the voltage of auxiliary power to subsystems
Second voltage of power supply.
2. the power-supply system for thermal power plant's auxiliary control system as claimed in claim 1, it is characterised in that several described sons
System is: the first unit, the second unit and synergic system.
3. the power-supply system for thermal power plant's auxiliary control system as claimed in claim 2, it is characterised in that described master's the first electricity
Source module assembly comprises:
First main power source module, for being converted into the first voltage powered to the first unit by the voltage of main power source；
Second main power source module, for being converted into the first voltage powered to the second unit by the voltage of main power source；And,
3rd main power source module, for being converted into the first voltage powered to synergic system by the voltage of main power source.
4. the power-supply system for thermal power plant's auxiliary control system as claimed in claim 2, it is characterised in that described master's the second electricity
Source module assembly comprises:
4th main power source module, for being converted into the second voltage powered to the first unit by the voltage of main power source；
5th main power source module, for being converted into the second voltage powered to the second unit by the voltage of main power source；And,
6th main power source module, for being converted into the second voltage powered to synergic system by the voltage of main power source.
5. the power-supply system for thermal power plant's auxiliary control system as claimed in claim 2, it is characterised in that described pair the first electricity
Source module assembly comprises:
First auxiliary power module, for being converted into the first voltage powered to the first unit by the voltage of auxiliary power；
Second auxiliary power module, for being converted into the first voltage powered to the second unit by the voltage of auxiliary power；And,
3rd auxiliary power module, for being converted into the first voltage powered to synergic system by the voltage of auxiliary power.
6. the power-supply system for thermal power plant's auxiliary control system as claimed in claim 2, it is characterised in that described pair the second electricity
Source module assembly comprises:
Fourth officer power module, for being converted into the second voltage powered to the first unit by the voltage of auxiliary power；
5th auxiliary power module, for being converted into the second voltage powered to the second unit by the voltage of auxiliary power；And,
6th auxiliary power module, for being converted into the second voltage powered to synergic system by the voltage of auxiliary power.
7. the power-supply system for thermal power plant's auxiliary control system as claimed in claim 1, it is characterised in that described major and minor two
It is provided with double-power supply switching device between the main power inlet wire of road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610744982.4A CN106253450A (en) | 2016-08-29 | 2016-08-29 | A kind of power-supply system for thermal power plant's auxiliary control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610744982.4A CN106253450A (en) | 2016-08-29 | 2016-08-29 | A kind of power-supply system for thermal power plant's auxiliary control system |
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| CN106253450A true CN106253450A (en) | 2016-12-21 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1801019A (en) * | 2005-11-11 | 2006-07-12 | 南京科远控制工程有限公司 | Auxiliary workshop centralized control method for electricity generating enterprise |
| CN101465560A (en) * | 2008-12-29 | 2009-06-24 | 南京南瑞继保电气有限公司 | Method for rapidly switching power supply |
| CN103683484A (en) * | 2013-12-31 | 2014-03-26 | 大唐贵州发耳发电有限公司 | Circuit switching device |
| CN204794127U (en) * | 2015-07-01 | 2015-11-18 | 江苏大唐国际吕四港发电有限责任公司 | Feeder low voltage ride through control circuit |
| US20160242260A1 (en) * | 2013-07-02 | 2016-08-18 | Corey D. RAY | Lighting Control Module |
| CN206099503U (en) * | 2016-08-29 | 2017-04-12 | 江苏大唐国际吕四港发电有限责任公司 | A electrical power generating system for auxiliary control system of thermal power plant |
-
2016
- 2016-08-29 CN CN201610744982.4A patent/CN106253450A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1801019A (en) * | 2005-11-11 | 2006-07-12 | 南京科远控制工程有限公司 | Auxiliary workshop centralized control method for electricity generating enterprise |
| CN101465560A (en) * | 2008-12-29 | 2009-06-24 | 南京南瑞继保电气有限公司 | Method for rapidly switching power supply |
| US20160242260A1 (en) * | 2013-07-02 | 2016-08-18 | Corey D. RAY | Lighting Control Module |
| CN103683484A (en) * | 2013-12-31 | 2014-03-26 | 大唐贵州发耳发电有限公司 | Circuit switching device |
| CN204794127U (en) * | 2015-07-01 | 2015-11-18 | 江苏大唐国际吕四港发电有限责任公司 | Feeder low voltage ride through control circuit |
| CN206099503U (en) * | 2016-08-29 | 2017-04-12 | 江苏大唐国际吕四港发电有限责任公司 | A electrical power generating system for auxiliary control system of thermal power plant |
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Application publication date: 20161221 |
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