CN2648478Y - Interface circuit of constant current high voltage DC source and collecting-distributing controlling system - Google Patents

Interface circuit of constant current high voltage DC source and collecting-distributing controlling system Download PDF

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Publication number
CN2648478Y
CN2648478Y CN 200320108756 CN200320108756U CN2648478Y CN 2648478 Y CN2648478 Y CN 2648478Y CN 200320108756 CN200320108756 CN 200320108756 CN 200320108756 U CN200320108756 U CN 200320108756U CN 2648478 Y CN2648478 Y CN 2648478Y
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China
Prior art keywords
power supply
voltage
constant
current high
switch
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Expired - Fee Related
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CN 200320108756
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Chinese (zh)
Inventor
王治安
李永香
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SHANGHAI ANFU LASER ELECTRONIC EQUIPMENT CO Ltd
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SHANGHAI ANFU LASER ELECTRONIC EQUIPMENT CO Ltd
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Abstract

The utility model relates to an interface circuit of a constant current high voltage DC source and a collecting-distributing controlling system, which comprises a power operating parameter interface unit, a failure interface unit and a switch value interface unit; wherein the switch value interface unit is connected between a input circuit of the constant current high voltage DC source and a zero line of the constant current high voltage DC source; a shutdown switch, a booting switch and the N number of the constant current component access switches are controlled by the output signals of a switch value output port of the collecting-distributing controlling system; the N number of the AC relays are respectively connected with the corresponding constant component access switches in series and the contacts of the AC relays are respectively connected with the corresponding constant current components of the constant current high voltage DC source in series into an input circuit of the constant current high voltage DC source. The utility model causes the constant current high voltage DC source to integrate in the collecting-distributing controlling system and the stable and reliable operation can be realized under the control of the collecting-distributing controlling system so as to keep a sound communication with the collecting-distributing controlling system, thus realizing the information feedback.

Description

The interface circuit of constant-current high-voltage DC power supply and Distributed Control System (DCS)
Technical field
The utility model relates to power interface circuit, the interface circuit of particularly a kind of constant-current high-voltage DC power supply and Distributed Control System (DCS).
Background technology
At present, constant-current high-voltage DC power supply in the application in electrostatic precipitation field more and more widely, its operation all is to finish by manual operation, yet development along with the modernization of industry, the automatic control of production run need reach higher requirement, and this just requires constant-current high-voltage DC power supply to move automatically under the control of control system.This control system not only will have superior control performance, higher performance, and good maintainability, very high reliability, and also its control mode should be flexibly, concisely.Collecting and distributing control (the Distributed Control System of system, be called for short DCS), claim distributed computer control system again, it has reasonably drawn the strong point of blind controller system and computer control system, effectively overcome both shortcomings, be considered to state-of-the-art process control architecture.Yet how constant-current high-voltage DC power supply is incorporated in the Distributed Control System (DCS), make the automatic operation that it is can be under the control of Distributed Control System (DCS) reliable and stable, and communicating by letter well with Distributed Control System (DCS), is the problem that realizes that the automatic method of operation of this constant-current high-voltage DC power supply must solve.
The utility model content
The purpose of this utility model is to solve above-mentioned problems of the prior art, the interface circuit of a kind of constant-current high-voltage DC power supply and Distributed Control System (DCS) is provided, constant-current high-voltage DC power supply is incorporated in the Distributed Control System (DCS) and can be under the control of Distributed Control System (DCS) reliable and stable automatic operation, communicate by letter well with Distributed Control System (DCS), realize information feedback.
For achieving the above object, the utility model provides the interface circuit of a kind of constant-current high-voltage DC power supply and Distributed Control System (DCS), is characterized in comprising power supply operational factor interface unit and switching value interface unit;
The operational factor of constant-current high-voltage DC power supply inserts the analog quantity input port of Distributed Control System (DCS) through the electric parameters transducer of power supply operational factor interface unit;
Described switching value interface unit is drawn by the input circuit of constant-current high-voltage DC power supply, inserts zero line through shut down switch, high voltage isolator, oxygen content output switch and peroxide relay; First contact of peroxide relay and oxygen content output switch in parallel, second contact is connected to first contact, peroxide relay series circuit two ends with start switch, start relay after connecting; After the contact of start relay and in parallel N group constant current assembly insert switch and respective quadrature current relay series circuit and be connected in series, be parallel to the switch of starting shooting, the relay series circuit two ends of starting shooting; The contact of this N AC relay is connected in series with the corresponding constant current assembly of constant-current high-voltage DC power supply respectively inserts the constant-current high-voltage DC power supply input circuit, and shut down switch, start switch and N constant current assembly insert switch and also insert Distributed Control System (DCS) switching value output port.
Described interface circuit also comprises the fault interface unit, and the operation troubles signal of constant-current high-voltage DC power supply inserts the switch value input interface of Distributed Control System (DCS) through this fault interface unit.
The operation troubles signal of described constant-current high-voltage DC power supply comprise the high voltage isolator case door switch signal, temperature of oil in transformer signal, peroxide relay cross oxygen signal, overvoltage signal and under-voltage signal; wherein the temperature of oil in transformer signal is recorded by temperature sensor after the temperature transmitter of fault interface unit inserts the switching value input port, and overvoltage signal and under-voltage signal insert the switching value input port by the overvoltage protector output of the fault interface unit that inserts power supply input circuit.
The operational factor of described constant-current high-voltage DC power supply comprises input voltage, input current and output voltage, the output current of this power supply.
Insert the analog quantity input port of Distributed Control System (DCS) through the dust concentration electric parameters transducer of power supply operational factor interface unit by the dust concentration of the discharging flue gas of the fly-ash separator of constant-current high-voltage DC power supply power supply.
The utility model incorporates constant-current high-voltage DC power supply in the Distributed Control System (DCS), make the automatic operation that constant-current high-voltage DC power supply is can be under the control of Distributed Control System (DCS) reliable and stable, Distributed Control System (DCS) can change operational factor according to the working conditions change of constant-current high-voltage DC power supply or the variation control constant-current high-voltage DC power supply of fly-ash separator smoke discharge amount, to satisfy the requirement of environmental purification.The utility model also can be reflected to Distributed Control System (DCS) in real time with the various service datas and the failure message of constant-current high-voltage DC power supply operation, watching, to write down and to print service data table or trend curve, and failure message is done respective handling.
Below in conjunction with accompanying drawing and embodiment the utility model is further described.
Description of drawings
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
As Fig. 1 institute not, the utility model interface circuit 3, connect electrostatic precipitation with constant-current high-voltage DC power supply 1 and Distributed Control System (DCS) (Distributed Control System is called for short DCS) 2, comprise power supply operational factor interface unit 31, fault interface unit 32 and switching value interface unit 33.
Power supply operational factor interface unit 31 is provided with electric parameters transducer 34, and the operational factor of constant-current high-voltage DC power supply 1 is the input voltage u of power supply 1, input current i 1And output voltage U 2, output current I 2Signal inserts respective electrical transmitter 34 respectively, is converted to the analog quantity input port AI that 4～20mA magnitude of current inserts Distributed Control System (DCS) 2 through electric parameters transducer 34; In the present embodiment, by the dust concentration of the discharging flue gas of the fly-ash separator of constant-current high-voltage DC power supply 1 power supply by the test of dust concentration tester after dust concentration electric parameters transducer 34 is converted to the analog quantity input port AI that also inserts Distributed Control System (DCS) 2 behind 4～20mA magnitude of current.The dust concentration signal of the operational factor of constant-current high-voltage DC power supply 1 and fly-ash separator is controlled constant-current high-voltage DC power supplies 1 foundation of operation automatically as Distributed Control System (DCS) in the present embodiment 2, is not limited to this but can be used as the Distributed Control System (DCS) 2 control constant-current high-voltage DC power supplies 1 automatic parameter of moving foundation.
Fault interface unit 32 inserts the various fault-signals of constant-current high-voltage DC power supply 1 operation the switching value input port DI of Distributed Control System (DCS) 2.The door switch signal KM of the high voltage isolator case of constant-current high-voltage DC power supply 1 2Insert the switching value input port DI of Distributed Control System (DCS) 2; Temperature of oil in transformer signal K CBe to record again through temperature sensor to send into switching value input port DI after the temperature transmitter conversion by fault interface unit 32; Cross the oxygen content output K switch of oxygen signal by the oxygen content tester 0Control peroxide relay J 0, by the peroxide relay J 0The 3rd contact j 03To cross oxygen signal and export switching value input port DI to; The overvoltage signal K of constant-current high-voltage DC power supply 1 GWith under-voltage signal K QBe by the fault interface unit 32 overvoltage protectors output that inserts power supply input circuit, insert switching value input port DI.
Switching value interface unit 33 is drawn by the input circuit of constant-current high-voltage DC power supply 1, through the shut down switch S of constant-current high-voltage DC power supply 1 B, high voltage isolator KM 1, oxygen content output K switch 0And peroxide relay J 0Insert zero line.The peroxide relay J 0The first contact j 01With oxygen content output K switch 0Parallel connection, the second contact j 02Start switch S with constant-current high-voltage DC power supply 1 AAnd start relay J ABe connected to the first contact j after the series connection 01, the peroxide relay J 0The series circuit two ends.The start relay J AContact j AInsert switch S with N (N is a positive integer) group constant current assembly in parallel 1～S NAnd respective quadrature current relay J 1～J NAfter the series circuit serial connection, be parallel to the start switch S A, the start relay J AThe series circuit two ends.AC relay J 1～J NTwo groups of contact j 1～j NBe connected to the two ends of corresponding constant current assembly 4 in constant-current high-voltage DC power supply 1 input circuit respectively.Switching value interface unit 33 switch S A, S B, S 1, S 2... S NSwitching signal by the switching value output port DO of Distributed Control System (DCS) 2 output.In the present embodiment, N is 10.The voltage at switching value interface unit 33 two ends is the 220V alternating voltage.
Distributed Control System (DCS) 2 is according to the operational factor u of the constant-current high-voltage DC power supply 1 that inserts its analog quantity input port AI 1, i 1, U 2, I 2And the dust concentration signal, and the fault-signal that inserts constant-current high-voltage DC power supply 1 operation of its switching value input port DI, by the switch S of its switching value output port DO output control signal gauge tap amount interface unit 33 A, S B, S 1, S 2... S NClose or disconnect, with the automatic operation of control constant-current high-voltage DC power supply 1.
When Distributed Control System (DCS) 2 control constant-current high-voltage DC power supplies 1 begin to power, the shut down switch S of gauge tap amount interface unit 33 BClosed, high voltage isolator KM 1Closure, if this moment, oxygen content was normal, peroxide relay J then 0The second contact j 02Closed.Because of the start switch S AClosure, the start relay J AConnect and control its contact j AClosure is with N (N is a positive integer) the group constant current assembly access switch S of parallel connection 1～S NAnd respective quadrature current relay J 1～J NSeries circuit inserts power circuit.Distributed Control System (DCS) 2 is according to the operational factor u of constant-current high-voltage DC power supply 1 1, i 1, U 2, I 2, dust concentration signal and fault-signal, output control signals to the constant current assembly by switching value output port DO and insert switch S 1～S N, control corresponding constant current assembly and insert switch S 1～S NBreak-make, thereby will insert switch S with the constant current assembly 1～S NThe respective quadrature current relay J of series connection 1～J NInsert or disconnection this respective quadrature current relay J 1～J NControl its contact j 1～j NClosed or disconnect so that with this corresponding contacts j 1～j NThe corresponding constant current assembly 4 that links to each other drops into power circuit or cuts off from power circuit.The size of the output voltage that how much has determined constant-current high-voltage DC power supply 1 that this constant current assembly 4 puts into operation.
During powered-down, Distributed Control System (DCS) 2 is controlled shut down switch S by its switching value output port DO output off signal BAnd start switch S ADisconnect, stop power supply with the control power supply.
Distributed Control System (DCS) 2 is according to power supply operational factor, dust concentration signal thus, by control interface circuit 3, can adjust, control constant-current high-voltage DC power supply 1 and move automatically by required curtage.And when producing fault such as peroxide, overvoltage, under-voltage, oily temperature when constant-current high-voltage DC power supply 1 operation, Distributed Control System (DCS) 2 also can be adjusted the power supply running status, controls its normal operation or powered-down to arrive the purpose of protection constant-current high-voltage DC power supply 1.
By the utility model interface circuit constant-current high-voltage DC power supply is incorporated in the Distributed Control System (DCS) like this, software configuration by the Distributed Control System (DCS) active station, can on the Distributed Control System (DCS) active station, control the automatic operation of constant-current high-voltage DC power supply, also can gather the various service datas and the failure message of constant-current high-voltage DC power supply operation in real time, print service data table or trend curve, and failure message is done respective handling.

Claims (5)

1, the interface circuit of a kind of constant-current high-voltage DC power supply and Distributed Control System (DCS) is characterized in that comprising power supply operational factor interface unit (31) and switching value interface unit (33);
The operational factor of constant-current high-voltage DC power supply (1) inserts the analog quantity input port AI of Distributed Control System (DCS) (2) through the electric parameters transducer (34) of power supply operational factor interface unit (31);
Described switching value interface unit (33) is drawn by the input circuit of constant-current high-voltage DC power supply (1), through shut down switch S B, high voltage isolator KM 1, oxygen content output K switch 0And peroxide relay J 0Insert zero line; The peroxide relay J 0The first contact j 01With oxygen content output K switch 0Parallel connection, the second contact j 02With the start switch S A, the start relay J ABe connected to the first contact j after the series connection 01, the peroxide relay J 0The series circuit two ends; The start relay J AContact j AInsert switch S with N group constant current assembly (4) in parallel 1～S NAnd respective quadrature current relay J 1～J NAfter the series circuit serial connection, be parallel to the start switch S A, the start relay J AThe series circuit two ends; This N AC relay J 1～J NContact j 1～j NBe connected in series with the corresponding constant current assembly (4) of constant-current high-voltage DC power supply (1) respectively and insert constant-current high-voltage DC power supply (1) input circuit, shut down switch S B, the start switch S AAnd N constant current assembly inserts switch S 1～S NAlso insert Distributed Control System (DCS) (2) switching value output port DO.
2, interface circuit according to claim 1, it is characterized in that also comprising fault interface unit (32), the operation troubles signal of constant-current high-voltage DC power supply (1) inserts the switch value input interface DI of Distributed Control System (DCS) (2) through this fault interface unit (32).
3, interface circuit according to claim 2, the operation troubles signal that it is characterized in that described constant-current high-voltage DC power supply (1) comprises the door switch signal KM of high voltage isolator case 2, temperature of oil in transformer signal, peroxide relay J 0Cross oxygen signal, overvoltage signal K GAnd under-voltage signal K Q, wherein the temperature of oil in transformer signal is recorded by temperature sensor after the temperature transmitter of fault interface unit (32) inserts switching value input end DI, overvoltage signal K GWith under-voltage signal K QOvervoltage protector output by the fault interface unit (32) that inserts power supply input circuit inserts switching value input port DI.
4, according to claim 1,2 or 3 described interface circuits, the operational factor that it is characterized in that described constant-current high-voltage DC power supply (1) comprises input voltage u1, the input current i1 of this power supply (1) and output voltage U 2, output current I2.
5,, it is characterized in that the dust concentration by the discharging flue gas of the fly-ash separator of constant-current high-voltage DC power supply (1) power supply inserts the analog quantity input port AI of Distributed Control System (DCS) (2) through the dust concentration electric parameters transducer (34) of power supply operational factor interface unit (31) according to claim 1,2 or 3 described interface circuits.
CN 200320108756 2003-10-09 2003-10-09 Interface circuit of constant current high voltage DC source and collecting-distributing controlling system Expired - Fee Related CN2648478Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200320108756 CN2648478Y (en) 2003-10-09 2003-10-09 Interface circuit of constant current high voltage DC source and collecting-distributing controlling system

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Application Number Priority Date Filing Date Title
CN 200320108756 CN2648478Y (en) 2003-10-09 2003-10-09 Interface circuit of constant current high voltage DC source and collecting-distributing controlling system

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Publication Number Publication Date
CN2648478Y true CN2648478Y (en) 2004-10-13

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104993733A (en) * 2015-07-24 2015-10-21 北京九方宏信交通装备有限公司 Emergency power supply device in rail transit vehicle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104993733A (en) * 2015-07-24 2015-10-21 北京九方宏信交通装备有限公司 Emergency power supply device in rail transit vehicle

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