CN102621968A - Wind power generation laboratory simulation control method and wind power generation laboratory simulation device - Google Patents
Wind power generation laboratory simulation control method and wind power generation laboratory simulation device Download PDFInfo
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- CN102621968A CN102621968A CN2012101049571A CN201210104957A CN102621968A CN 102621968 A CN102621968 A CN 102621968A CN 2012101049571 A CN2012101049571 A CN 2012101049571A CN 201210104957 A CN201210104957 A CN 201210104957A CN 102621968 A CN102621968 A CN 102621968A
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Abstract
The invention provides a wind power generation laboratory simulation control method and a wind power generation laboratory simulation device, which relate to the field of application of wind power generation. The wind power generation laboratory simulation device comprises an upper computer monitoring system, a PLC (programmable logic controller) and a wind power generation simulation system. The upper computer monitoring system and the PLC controller are in subjected to communication through field bus. The wind power generation system comprises a frequency converter, a first contact, a second contact, a first three-phase asynchronous motor, a second three-phase asynchronous motor, a first revolution sensor, a second revolution sensor, a direct-driven wind power generation set, a double-fed wind power generation set, a double-fed drive circuit, a direct drive circuit, a direct-driven wind power converter, a double-fed wind power converter, a first circuit breaker, a second circuit breaker, an isolated transformer, a laboratory power grid and the like. The PLC is used for receiving control instructions of the upper computer monitoring system and controlling the direct-driven wind power generation set or double-fed wind power generation set in the wind power generation simulation system to be combined to the power grid. The wind power generation laboratory simulation device is compatible with both the direct-driven wind power generation mode and the double-fed wind power generation mode and is convenient to realize remote multi-unit monitoring.
Description
Technical field
The present invention relates to a kind of wind-powered electricity generation laboratory simulation control method and device thereof, belong to the wind-power electricity generation application.
Background technology
Wind generator system is the system of a complicacy; Because the restriction and the natural wind of conditions such as fund, place have randomness and burst; Directly on wind energy conversion system, test be inconvenient to experimentize teaching, scientific research; Can not conveniently effectively verify relevant control algorithm, therefore in the research of wind generator system, adopt the blower fan analogue technique to become the research focus at present with the controlled experiment porch that obtains disengaging natural wind environment by this true wind-power electricity generation platform.
In addition; How further on this wind-powered electricity generation analog platform, to realize simultaneously directly driving and two kinds of typical wind generatings of double-fed; And realize long-range multimachine monitoring, provide comprehensive, high-caliber wind-powered electricity generation research platform to become an emerging developing direction in field for this reason for the experimental teaching of colleges and universities and the scientific research personnel of enterprise.
Summary of the invention
The objective of the invention is to deficiency, propose a kind of wind-powered electricity generation laboratory simulation control method and device thereof, have compatibility and directly drive and two kinds of wind-power electricity generation modes of double-fed, and be convenient to the advantage of long-range multimachine monitoring to above-mentioned prior art.
A kind of wind-powered electricity generation laboratory simulation control method of the present invention is characterized in that:
Step 1 is by the steering order S1=0 of PLC controller 2 initialization first contactor 32; The steering order S2=0 of second contactor 33; The steering order S3=0 of first isolating switch 44; The steering order S4=0 of second isolating switch 45, i.e. initialization first contactor 32, second contactor 33, first isolating switch 44 and second isolating switch 45 are off-state;
Step 2 starts directly driven wind-powered unit instruction if ipc monitor system 1 issues to PLC controller 2; The steering order S1=1 of first contactor 32 then is set; It is closed first contactor 32; And the frequency f by PLC controller 2 control of conversion devices 31 begins to increase gradually frequently from 0Hz, and 0≤f≤50 get into step 4;
Step 3 starts the instruction of double-fed fan motor unit if ipc monitor system 1 issues to PLC controller 2; The steering order S2=1 of second contactor 33 then is set; It is closed second contactor 33; And the frequency f by PLC controller 2 control of conversion devices 31 begins to increase gradually frequently from 0Hz, and 0≤f≤50 get into step 6;
Step 4 detects the rotation speed n of first speed probe 36 when PLC controller 2
1Startup rotating speed more than or equal to directly driven wind-powered unit; Like 30% o'clock of directly driven wind-powered unit rated speed; Then directly drive drive signal to directly driving driving circuit 41 transmissions by PLC controller 2; Directly drive driving pulse by directly driving driving circuit 41 to directly driven wind-powered current transformer 42 transmissions again, start directly driven wind-powered current transformer 42; Otherwise, detect the rotation speed n of first speed probe 36 when PLC controller 2
1Less than the startup rotating speed of directly driven wind-powered unit, like 30% o'clock of directly driven wind-powered unit rated speed, then block and directly drive drive signal to directly driving driving circuit 41 by PLC controller 2, make directly driven wind-powered current transformer 42 out of service;
Step 5 detects the rotation speed n of first speed probe 36 when PLC controller 2
1More than or equal to the rotating speed same period of directly driven wind-powered unit, as 97% o'clock of directly driven wind-powered unit rated speed, the steering order S3=1 of first isolating switch 44 is set then, promptly closed first isolating switch 44 is incorporated into the power networks directly driven wind-powered current transformer 42; Otherwise, detect the rotation speed n of first speed probe 36 when PLC controller 2
1Less than the rotating speed same period of directly driven wind-powered unit, as 97% o'clock of directly driven wind-powered unit rated speed, the steering order S3=0 of first isolating switch 44 is set then, promptly break off first isolating switch 44, make directly driven wind-powered current transformer 42 and laboratory electrical network 47 off-the-lines, get into step 2;
Step 6 detects the rotation speed n of second speed probe 37 when PLC controller 2
2Startup rotating speed more than or equal to the double-fed fan motor unit; Like 30% o'clock of double-fed fan motor unit rated speed; Then send the double-fed drive signal to double-fed driving circuit 40 by PLC controller 2; Send the double-fed driving pulse by double-fed driving circuit 40 to double-fed fan motor current transformer 43 again, start double-fed fan motor current transformer 43; Otherwise, detect the rotation speed n of second speed probe 37 when PLC controller 2
2Less than the startup rotating speed of double-fed fan motor unit, as 30% o'clock of double-fed fan motor unit rated speed, then block the double-fed drive signal to double-fed driving circuit 40 by PLC controller 2, make double-fed fan motor current transformer 43 out of service;
Step 7 detects the rotation speed n of second speed probe 37 when PLC controller 2
2More than or equal to the rotating speed same period of double-fed fan motor unit, as 97% o'clock of double-fed fan motor unit rated speed, the steering order S4=1 of second isolating switch 45 is set then, promptly closed second isolating switch 45 is incorporated into the power networks double-fed fan motor unit 39; Otherwise, detect the rotation speed n of second speed probe 37 when PLC controller 2
2Less than the rotating speed same period of double-fed fan motor unit, as 97% o'clock of double-fed fan motor unit rated speed, the steering order S4=0 of second isolating switch 45 is set then, promptly break off second isolating switch 45, make double-fed fan motor unit 39 and laboratory electrical network 47 off-the-lines, get into step 2;
2, the device of the above-mentioned wind-powered electricity generation laboratory simulation of realization of the present invention control method; It is characterized in that; Comprise: ipc monitor system 1, PLC controller 2 and wind-powered electricity generation simulation system 3, carry out communication through fieldbus between ipc monitor system 1 and the PLC controller 2;
Said ipc monitor system 1 is used for the running status of remote monitoring wind-powered electricity generation simulation system 3; It comprises: host computer 11, host computer 12, host computer 13...... host computer n; N is a natural number; And n >=12, said host computer 11 communicates through fieldbus as the main frame of ipc monitor system 1 and PLC controller 2, and through network respectively with ipc monitor system 1 in host computer 12 link to each other with host computer n; Said host computer 12, host computer 13...... host computer n are all as the slave of ipc monitor system 1, between any two successively through the network interconnection.
Said PLC controller 2 is used for the running status of on-site supervision wind-powered electricity generation simulation system 3; Comprise: the frequency f of the frequency converter 31 in the control wind-powered electricity generation simulation system 3 begins to increase gradually frequently to 50Hz from 0Hz; 0≤f≤50; Give first contactor, the 32 sending controling instruction S1 in the wind-powered electricity generation simulation system 3, give second contactor, the 33 sending controling instruction S2 in the wind-powered electricity generation simulation system 3, give first isolating switch, the 44 sending controling instruction S3 in the wind-powered electricity generation simulation system 3; Give second isolating switch, the 45 sending controling instruction S4 in the wind-powered electricity generation simulation system 3; Directly drive drive signal for driving circuit 41 transmissions of directly driving in the wind-powered electricity generation simulation system 3, send the double-fed drive signals for the double-fed driving circuit 40 in the wind-powered electricity generation simulation system 3, receive the rotation speed n of first speed probe 36 in the wind-powered electricity generation simulation system 3
1Signal, the rotation speed n of second speed probe 37 in the reception wind-powered electricity generation simulation system 3
2Signal;
Said wind-powered electricity generation simulation system 3 comprises frequency converter 31, first contactor 32, second contactor 33, first threephase asynchronous 34, second threephase asynchronous 35, first speed probe 36, second speed probe 37, directly driven wind-powered unit 38, double-fed fan motor unit 39, double-fed driving circuit 40, directly drives driving circuit 41, directly driven wind-powered current transformer 42, double-fed fan motor current transformer 43, first isolating switch 44, second isolating switch 45, isolating transformer 46 and laboratory electrical network 47
Said frequency converter 31 is used to receive the frequency f signal of PLC controller 2, and its three-phase output end not only is connected with the three-phase input end of first contactor 32, and is connected with the three-phase input end of second contactor 33;
Said first contactor 32 is realized the closed of self through the steering order S1 that receives PLC controller 2 or turn-offs that its three-phase input end is connected with the three-phase output end of frequency converter 31, and its three-phase output end is connected with the three-phase input end of first threephase asynchronous 34;
Said first threephase asynchronous 34 is with first speed probe 36 and directly driven wind-powered unit 38 is coaxial successively is connected, and the three-phase input end of first threephase asynchronous 34 is connected with the three-phase output end of first contactor 32;
Said first speed probe 36 is used for sending rotation speed n to PLC controller 2
1Signal, itself and first threephase asynchronous 34 and directly driven wind-powered 38 coaxial connections of unit, and first speed probe 36 is positioned at the centre of first threephase asynchronous 34 and directly driven wind-powered unit 38;
Said directly driven wind-powered current transformer 42 is realized the unsteady flow operation through receiving the driving pulse that directly drives that directly drives driving circuit 41; Its three-phase input end is connected with the three-phase output end of directly driven wind-powered unit 38, and its three-phase output end is connected with the three-phase input end of first isolating switch 44;
The said driving circuit 41 that directly drives is used for the drive signal of directly driving of the PLC controller 2 that receives is converted into and directly drives driving pulse and drive the operation of directly driven wind-powered current transformer 42 unsteady flows;
Said first isolating switch 44 is realized the closed of self through the steering order S3 that receives PLC controller 2 or turn-offs that its three-phase input end is connected with the three-phase output end of directly driven wind-powered current transformer 42, and its three-phase output end is connected with the winding 1 of isolating transformer 46;
Said second contactor 33 is realized the closed of self through the steering order S2 that receives PLC controller 2 or turn-offs that its three-phase input end is connected with the three-phase output end of frequency converter 31, and its three-phase output end is connected with the three-phase input end of second threephase asynchronous 35;
Said second threephase asynchronous 35 is with second speed probe 37 and double-fed fan motor unit 39 is coaxial successively is connected, and the three-phase input end of second threephase asynchronous 35 is connected with the three-phase output end of second contactor 33;
Said second speed probe 37 is used for sending rotation speed n to PLC controller 2
2Signal, itself and second threephase asynchronous 35 and 39 coaxial connections of double-fed fan motor unit, and second speed probe 37 is positioned at the centre of second threephase asynchronous 35 and double-fed fan motor unit 39;
Said double-fed fan motor unit 39 is connected with second speed probe 37 and second threephase asynchronous 35 successively; Its stator side three-phase port not only is connected with the three-phase input end of second isolating switch 45; And be connected with the three-phase output end of double-fed fan motor current transformer 43, its rotor-side three-phase port is connected with the three-phase input end of double-fed fan motor current transformer 43;
Said double-fed fan motor current transformer 43 is realized the unsteady flow operation through the double-fed driving pulse that receives double-fed driving circuit 40; Its three-phase input end is connected with the rotor-side three-phase port of double-fed fan motor unit 39, and its three-phase output end is connected with the three-phase input end of second isolating switch 45;
Said double-fed driving circuit 40 is used for the double-fed drive signal of the PLC controller 2 that receives is converted into the operation of double-fed driving pulse driving double-fed fan motor current transformer 43 unsteady flows;
Said second isolating switch 45 is realized the closed of self through the steering order S4 that receives PLC controller 2 or is turn-offed; Its three-phase input end not only is connected with the three-phase output end of double-fed fan motor current transformer 43; And be connected with the stator side three-phase port of double-fed fan motor unit 39, its three-phase output end is connected with the winding 2 of isolating transformer 46;
Said isolating transformer 46 comprises winding 1, winding 2 and 3 three parts of winding; Be used for laboratory electrical network 47, directly driven wind-powered current transformer 42 and double-fed fan motor current transformer 43 are isolated in twos; Wherein winding 1 is connected with the three-phase output end of first isolating switch 44; Winding 2 is connected with the three-phase output end of second isolating switch 45, and winding 3 is connected with laboratory electrical network 47.
Compared with prior art, wind-powered electricity generation laboratory simulation control method of the present invention and device thereof have compatibility and directly drive and two kinds of wind-power electricity generation modes of double-fed, and are convenient to the beneficial effect of long-range multimachine monitoring, and be specific as follows:
1) compatibility is directly driven and two kinds of wind-power electricity generation modes of double-fed.Because " if issuing to PLC controller 2, ipc monitor system 1 starts the instruction of double-fed fan motor unit; the steering order S2=1 of second contactor 33 then is set; be closed second contactor 33; and begin to increase gradually frequently 0≤f≤50 from 0Hz by the frequency f of PLC controller 2 control of conversion devices 31 " and " start the instruction of double-fed fan motor unit if ipc monitor system 1 issues to PLC controller 2, the steering order S2=1 of second contactor 33 then is set; be closed second contactor 33; and begin to increase gradually frequently 0≤f≤50 from 0Hz by the frequency f of PLC controller 2 control of conversion devices 31 " and " isolating transformer 46 comprises winding 1, winding 2 and 3 three parts of winding, is used for laboratory electrical network 47, directly driven wind-powered current transformer 42 and double-fed fan motor current transformer 43 are isolated in twos; Wherein winding 1 is connected with the three-phase output end of first isolating switch 44; Winding 2 is connected with the three-phase output end of second isolating switch 45, and winding 3 is connected with laboratory electrical network 47 ", so this wind-powered electricity generation laboratory simulation control method and device thereof can go out the family curve of actual blower fan through prime mover system simulation that frequency converter and asynchronous machine constituted; and drag directly driven wind-powered unit or the double-fed fan motor set grid-connection generates electricity, promptly compatibility is directly driven and two kinds of wind-power electricity generation modes of double-fed;
2) be convenient to long-range multimachine monitoring.Because " ipc monitor system 1 is used for the running status of remote monitoring wind-powered electricity generation simulation system 3; it comprises: host computer 11, host computer 12, host computer 13...... host computer n; n is a natural number, and n >=12, said host computer 11 communicates through fieldbus as the main frame of ipc monitor system 1 and PLC controller 2; and through network respectively with ipc monitor system 1 in host computer 12 link to each other with host computer n; said host computer 12, host computer 13...... host computer n are all as the slave of ipc monitor system 1, between any two successively through the network interconnection ", so this wind-powered electricity generation laboratory simulation device is convenient to long-range multimachine and is monitored.
Description of drawings
Fig. 1 is wind-powered electricity generation laboratory simulation control method of the present invention and device block diagram thereof
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is done further detailed description, but following embodiment should not be construed as limitation of the present invention.
The content of this embodiment comprises two parts, first wind-powered electricity generation laboratory simulation control method, and it two is wind-powered electricity generation laboratory simulation devices.
(1) wind-powered electricity generation laboratory simulation control method
The practical implementation step of present embodiment wind-powered electricity generation laboratory simulation control method is:
Step 1 is by the steering order S1=0 of PLC controller 2 initialization first contactor 32; The steering order S2=0 of second contactor 33; The steering order S3=0 of first isolating switch 44; The steering order S4=0 of second isolating switch 45, i.e. initialization first contactor 32, second contactor 33, first isolating switch 44 and second isolating switch 45 are off-state;
Step 2 starts directly driven wind-powered unit instruction if ipc monitor system 1 issues to PLC controller 2; The steering order S1=1 of first contactor 32 then is set; It is closed first contactor 32; And the frequency f by PLC controller 2 control of conversion devices 31 begins to increase gradually frequently from 0Hz, and 0≤f≤50 get into step 4;
Step 3 starts the instruction of double-fed fan motor unit if ipc monitor system 1 issues to PLC controller 2; The steering order S2=1 of second contactor 33 then is set; It is closed second contactor 33; And the frequency f by PLC controller 2 control of conversion devices 31 begins to increase gradually frequently from 0Hz, and 0≤f≤50 get into step 6;
Step 4 detects the rotation speed n of first speed probe 36 when PLC controller 2
1Startup rotating speed more than or equal to directly driven wind-powered unit; Like 30% o'clock of directly driven wind-powered unit rated speed; Then directly drive drive signal to directly driving driving circuit 41 transmissions by PLC controller 2; Directly drive driving pulse by directly driving driving circuit 41 to directly driven wind-powered current transformer 42 transmissions again, start directly driven wind-powered current transformer 42; Otherwise, detect the rotation speed n of first speed probe 36 when PLC controller 2
1Less than the startup rotating speed of directly driven wind-powered unit, like 30% o'clock of directly driven wind-powered unit rated speed, then block and directly drive drive signal to directly driving driving circuit 41 by PLC controller 2, make directly driven wind-powered current transformer 42 out of service;
Step 5 detects the rotation speed n of first speed probe 36 when PLC controller 2
1More than or equal to the rotating speed same period of directly driven wind-powered unit, as 97% o'clock of directly driven wind-powered unit rated speed, the steering order S3=1 of first isolating switch 44 is set then, promptly closed first isolating switch 44 is incorporated into the power networks directly driven wind-powered current transformer 42; Otherwise, detect the rotation speed n of first speed probe 36 when PLC controller 2
1Less than the rotating speed same period of directly driven wind-powered unit, as 97% o'clock of directly driven wind-powered unit rated speed, the steering order S3=0 of first isolating switch 44 is set then, promptly break off first isolating switch 44, make directly driven wind-powered current transformer 42 and laboratory electrical network 47 off-the-lines, get into step 2;
Step 6 detects the rotation speed n of second speed probe 37 when PLC controller 2
2Startup rotating speed more than or equal to the double-fed fan motor unit; Like 30% o'clock of double-fed fan motor unit rated speed; Then send the double-fed drive signal to double-fed driving circuit 40 by PLC controller 2; Send the double-fed driving pulse by double-fed driving circuit 40 to double-fed fan motor current transformer 43 again, start double-fed fan motor current transformer 43; Otherwise, detect the rotation speed n of second speed probe 37 when PLC controller 2
2Less than the startup rotating speed of double-fed fan motor unit, as 30% o'clock of double-fed fan motor unit rated speed, then block the double-fed drive signal to double-fed driving circuit 40 by PLC controller 2, make double-fed fan motor current transformer 43 out of service;
Step 7 detects the rotation speed n of second speed probe 37 when PLC controller 2
2More than or equal to the rotating speed same period of double-fed fan motor unit, as 97% o'clock of double-fed fan motor unit rated speed, the steering order S4=1 of second isolating switch 45 is set then, promptly closed second isolating switch 45 is incorporated into the power networks double-fed fan motor unit 39; Otherwise, detect the rotation speed n of second speed probe 37 when PLC controller 2
2Less than the rotating speed same period of double-fed fan motor unit, as 97% o'clock of double-fed fan motor unit rated speed, the steering order S4=0 of second isolating switch 45 is set then, promptly break off second isolating switch 45, make double-fed fan motor unit 39 and laboratory electrical network 47 off-the-lines, get into step 2;
(2) wind-powered electricity generation laboratory simulation device
Present embodiment is realized the 5kW wind-powered electricity generation laboratory simulation device of above-mentioned wind-powered electricity generation laboratory simulation control method; It is characterized in that; Comprise: ipc monitor system 1, PLC controller 2 and wind-powered electricity generation simulation system 3, carry out communication through fieldbus between ipc monitor system 1 and the PLC controller 2;
Said ipc monitor system 1 is used for the running status of remote monitoring wind-powered electricity generation simulation system 3; It comprises: host computer 11, host computer 12, host computer 13...... host computer n; N is a natural number; And n >=12, said host computer 11 communicates through fieldbus as the main frame of ipc monitor system 1 and PLC controller 2, and through network respectively with ipc monitor system 1 in host computer 12 link to each other with host computer n; Said host computer 12, host computer 13...... host computer n are all as the slave of ipc monitor system 1, between any two successively through the network interconnection.
Said PLC controller 2 is used for the running status of on-site supervision wind-powered electricity generation simulation system 3; Comprise: the frequency f of the frequency converter 31 in the control wind-powered electricity generation simulation system 3 begins to increase gradually frequently to 50Hz from 0Hz; 0≤f≤50; Give first contactor, the 32 sending controling instruction S1 in the wind-powered electricity generation simulation system 3, give second contactor, the 33 sending controling instruction S2 in the wind-powered electricity generation simulation system 3, give first isolating switch, the 44 sending controling instruction S3 in the wind-powered electricity generation simulation system 3; Give second isolating switch, the 45 sending controling instruction S4 in the wind-powered electricity generation simulation system 3; Directly drive drive signal for driving circuit 41 transmissions of directly driving in the wind-powered electricity generation simulation system 3, send the double-fed drive signals for the double-fed driving circuit 40 in the wind-powered electricity generation simulation system 3, receive the rotation speed n of first speed probe 36 in the wind-powered electricity generation simulation system 3
1Signal, the rotation speed n of second speed probe 37 in the reception wind-powered electricity generation simulation system 3
2Signal;
Said wind-powered electricity generation simulation system 3 comprises frequency converter 31, first contactor 32, second contactor 33, first threephase asynchronous 34, second threephase asynchronous 35, first speed probe 36, second speed probe 37, directly driven wind-powered unit 38, double-fed fan motor unit 39, double-fed driving circuit 40, directly drives driving circuit 41, directly driven wind-powered current transformer 42, double-fed fan motor current transformer 43, first isolating switch 44, second isolating switch 45, isolating transformer 46 and laboratory electrical network 47
Said frequency converter 31, power is 5.5kW, is used to receive the frequency f signal of PLC controller 2, its three-phase output end not only is connected with the three-phase input end of first contactor 32, and is connected with the three-phase input end of second contactor 33;
Said first contactor 32 is realized the closed of self through the steering order S1 that receives PLC controller 2 or turn-offs that its three-phase input end is connected with the three-phase output end of frequency converter 31, and its three-phase output end is connected with the three-phase input end of first threephase asynchronous 34;
Said first threephase asynchronous 34, power is 5kW, it is with first speed probe 36 and directly driven wind-powered unit 38 is coaxial successively is connected, and the three-phase input end of first threephase asynchronous 34 is connected with the three-phase output end of first contactor 32;
Said first speed probe 36 is used for sending rotation speed n to PLC controller 2
1Signal, itself and first threephase asynchronous 34 and directly driven wind-powered 38 coaxial connections of unit, and first speed probe 36 is positioned at the centre of first threephase asynchronous 34 and directly driven wind-powered unit 38;
Said directly driven wind-powered current transformer 42; Power is 5kW; It realizes the unsteady flow operation through receiving the driving pulse that directly drives that directly drives driving circuit 41, and its three-phase input end is connected with the three-phase output end of directly driven wind-powered unit 38, and its three-phase output end is connected with the three-phase input end of first isolating switch 44;
The said driving circuit 41 that directly drives is used for the drive signal of directly driving of the PLC controller 2 that receives is converted into and directly drives driving pulse and drive the operation of directly driven wind-powered current transformer 42 unsteady flows;
Said first isolating switch 44 is realized the closed of self through the steering order S3 that receives PLC controller 2 or turn-offs that its three-phase input end is connected with the three-phase output end of directly driven wind-powered current transformer 42, and its three-phase output end is connected with the winding 1 of isolating transformer 46;
Said second contactor 33 is realized the closed of self through the steering order S2 that receives PLC controller 2 or turn-offs that its three-phase input end is connected with the three-phase output end of frequency converter 31, and its three-phase output end is connected with the three-phase input end of second threephase asynchronous 35;
Said second threephase asynchronous 35, power is 5kW, it is with second speed probe 37 and double-fed fan motor unit 39 is coaxial successively is connected, and the three-phase input end of second threephase asynchronous 35 is connected with the three-phase output end of second contactor 33;
Said second speed probe 37 is used for sending rotation speed n to PLC controller 2
2Signal, itself and second threephase asynchronous 35 and 39 coaxial connections of double-fed fan motor unit, and second speed probe 37 is positioned at the centre of second threephase asynchronous 35 and double-fed fan motor unit 39;
Said double-fed fan motor unit 39; Power is 5kW; It is connected with second speed probe 37 and second threephase asynchronous 35 successively; Its stator side three-phase port not only is connected with the three-phase input end of second isolating switch 45, and is connected with the three-phase output end of double-fed fan motor current transformer 43, and its rotor-side three-phase port is connected with the three-phase input end of double-fed fan motor current transformer 43;
Said double-fed fan motor current transformer 43 is realized the unsteady flow operation through the double-fed driving pulse that receives double-fed driving circuit 40; Its three-phase input end is connected with the rotor-side three-phase port of double-fed fan motor unit 39, and its three-phase output end is connected with the three-phase input end of second isolating switch 45;
Said double-fed driving circuit 40 is used for the double-fed drive signal of the PLC controller 2 that receives is converted into the operation of double-fed driving pulse driving double-fed fan motor current transformer 43 unsteady flows;
Said second isolating switch 45 is realized the closed of self through the steering order S4 that receives PLC controller 2 or is turn-offed; Its three-phase input end not only is connected with the three-phase output end of double-fed fan motor current transformer 43; And be connected with the stator side three-phase port of double-fed fan motor unit 39, its three-phase output end is connected with the winding 2 of isolating transformer 46;
Said isolating transformer 46; Capacity is 6kVA; It comprises winding 1, winding 2 and 3 three parts of winding, is used for laboratory electrical network 47, directly driven wind-powered current transformer 42 and double-fed fan motor current transformer 43 are isolated in twos, and wherein winding 1 is connected with the three-phase output end of first isolating switch 44; Winding 2 is connected with the three-phase output end of second isolating switch 45, and winding 3 is connected with laboratory electrical network 47.
Claims (5)
1. wind-powered electricity generation laboratory simulation control method is characterized in that:
Step 1 is by the steering order S1=0 of PLC controller (2) initialization first contactor (32); The steering order S2=0 of second contactor (33); The steering order S3=0 of first isolating switch (44); The steering order S4=0 of second isolating switch (45), i.e. initialization first contactor (32), second contactor (33), first isolating switch (44) and second isolating switch (45) are off-state;
Step 2 starts directly driven wind-powered unit instruction if ipc monitor system (1) issues to PLC controller (2); The steering order S1=1 of first contactor (32) then is set; It is closed first contactor (32); And the frequency f by PLC controller (2) control of conversion device (31) begins to increase gradually frequently from 0Hz, and 0≤f≤50 get into step 4;
Step 3 starts the instruction of double-fed fan motor unit if ipc monitor system (1) issues to PLC controller (2); The steering order S2=1 of second contactor (33) then is set; It is closed second contactor (33); And the frequency f by PLC controller (2) control of conversion device (31) begins to increase gradually frequently from 0Hz, and 0≤f≤50 get into step 6;
Step 4 detects the rotation speed n of first speed probe (36) when PLC controller (2)
1Startup rotating speed more than or equal to directly driven wind-powered unit; Like 30% o'clock of directly driven wind-powered unit rated speed; Then directly drive drive signal to directly driving driving circuit (41) transmission by PLC controller (2); Directly drive driving pulse by directly driving driving circuit (41) to directly driven wind-powered current transformer (42) transmission again, start directly driven wind-powered current transformer (42); Otherwise, detect the rotation speed n of first speed probe (36) when PLC controller (2)
1Less than the startup rotating speed of directly driven wind-powered unit, as 30% o'clock of directly driven wind-powered unit rated speed, then directly drive drive signal to directly driving driving circuit (41) blockade by PLC controller (2), make directly driven wind-powered current transformer (42) out of service;
Step 5 detects the rotation speed n of first speed probe (36) when PLC controller (2)
1More than or equal to the rotating speed same period of directly driven wind-powered unit, as 97% o'clock of directly driven wind-powered unit rated speed, the steering order S3=1 of first isolating switch (44) is set then, promptly closed first isolating switch (44) is incorporated into the power networks directly driven wind-powered current transformer (42); Otherwise, detect the rotation speed n of first speed probe (36) when PLC controller (2)
1The rotating speed same period less than directly driven wind-powered unit; As 97% o'clock of directly driven wind-powered unit rated speed, the steering order S3=0 of first isolating switch (44) then is set, promptly break off first isolating switch (44); Make directly driven wind-powered current transformer (42) and laboratory electrical network (47) off-the-line, get into step 2;
Step 6 detects the rotation speed n of second speed probe (37) when PLC controller (2)
2Startup rotating speed more than or equal to the double-fed fan motor unit; Like 30% o'clock of double-fed fan motor unit rated speed; Then send the double-fed drive signal to double-fed driving circuit (40) by PLC controller (2); Send the double-fed driving pulse by double-fed driving circuit (40) to double-fed fan motor current transformer (43) again, start double-fed fan motor current transformer (43); Otherwise, detect the rotation speed n of second speed probe (37) when PLC controller (2)
2Less than the startup rotating speed of double-fed fan motor unit, as 30% o'clock of double-fed fan motor unit rated speed, then block the double-fed drive signal to double-fed driving circuit (40) by PLC controller (2), make double-fed fan motor current transformer (43) out of service;
Step 7 detects the rotation speed n of second speed probe (37) when PLC controller (2)
2More than or equal to the rotating speed same period of double-fed fan motor unit, as 97% o'clock of double-fed fan motor unit rated speed, the steering order S4=1 of second isolating switch (45) is set then, promptly closed second isolating switch 45 is incorporated into the power networks double-fed fan motor unit (39); Otherwise, detect the rotation speed n of second speed probe (37) when PLC controller (2)
2The rotating speed same period less than the double-fed fan motor unit; As 97% o'clock of double-fed fan motor unit rated speed, the steering order S4=0 of second isolating switch (45) then is set, promptly break off second isolating switch (45); Make double-fed fan motor unit (39) and laboratory electrical network (47) off-the-line, get into step 2.
2. device of realizing the described wind-powered electricity generation laboratory simulation of claim 1 control method; It is characterized in that; Comprise: ipc monitor system (1), PLC controller (2) and wind-powered electricity generation simulation system (3), carry out communication through fieldbus between ipc monitor system (1) and the PLC controller (2).
3. device according to claim 2; It is characterized in that; Said ipc monitor system (1) is used for the running status of remote monitoring wind-powered electricity generation simulation system (3); It comprises: host computer (11), host computer (12), host computer (13) ... host computer (n), n are natural number, and n >=12; Said host computer (11) communicates through fieldbus as the main frame and the PLC controller (2) of ipc monitor system (1); And through network respectively with ipc monitor system (1) in host computer (12) link to each other said host computer (12), host computer (13) with host computer (n) ... host computer (n) is all as the slave of ipc monitor system (1), between any two successively through the network interconnection.
4. device according to claim 2; It is characterized in that; Said PLC controller (2) is used for the running status of on-site supervision wind-powered electricity generation simulation system (3); Comprise: the frequency f of the frequency converter (31) in the control wind-powered electricity generation simulation system (3) begins to increase gradually frequently to 50Hz from 0Hz, and first contactor (32) the sending controling instruction S1 in the wind-powered electricity generation simulation system (3) is given in 0≤f≤50; Give second contactor (33) the sending controling instruction S2 in the wind-powered electricity generation simulation system (3); Give first isolating switch (44) the sending controling instruction S3 in the wind-powered electricity generation simulation system (3), give second isolating switch (45) the sending controling instruction S4 in the wind-powered electricity generation simulation system (3), directly drive drive signal for driving circuit (41) transmission of directly driving in the wind-powered electricity generation simulation system (3); Send the double-fed drive signal for the double-fed driving circuit (40) in the wind-powered electricity generation simulation system (3), receive the rotation speed n of first speed probe (36) in the wind-powered electricity generation simulation system (3)
1Signal, the rotation speed n of second speed probe (37) in the reception wind-powered electricity generation simulation system (3)
2Signal.
5. device according to claim 2; It is characterized in that; Said wind-powered electricity generation simulation system (3) comprises frequency converter (31); First contactor (32); Second contactor (33); First threephase asynchronous (34); Second threephase asynchronous (35); First speed probe (36); Second speed probe (37); Directly driven wind-powered unit (38); Double-fed fan motor unit (39); Double-fed driving circuit (40); Directly drive driving circuit (41); Directly driven wind-powered current transformer (42); Double-fed fan motor current transformer (43); First isolating switch (44); Second isolating switch (45); Isolating transformer (46) and laboratory electrical network (47)
Said frequency converter (31) is used to receive the frequency f signal of PLC controller (2), and its three-phase output end not only is connected with the three-phase input end of first contactor (32), and is connected with the three-phase input end of second contactor (33);
Said first contactor (32) is realized the closed of self through the steering order S1 that receives PLC controller (2) or is turn-offed; Its three-phase input end is connected with the three-phase output end of frequency converter (31), and its three-phase output end is connected with the three-phase input end of first threephase asynchronous (34);
Said first threephase asynchronous (34) is with first speed probe (36) and directly driven wind-powered unit (38) is coaxial successively is connected, and the three-phase input end of first threephase asynchronous (34) is connected with the three-phase output end of first contactor (32);
Said first speed probe (36) is used for sending rotation speed n to PLC controller (2)
1Signal, itself and first threephase asynchronous (34) and coaxial connection of directly driven wind-powered unit (38), and first speed probe (36) is positioned at the centre of first threephase asynchronous (34) and directly driven wind-powered unit (38);
Said directly driven wind-powered current transformer (42) is realized the unsteady flow operation through receiving the driving pulse that directly drives that directly drives driving circuit (41); Its three-phase input end is connected with the three-phase output end of directly driven wind-powered unit (38), and its three-phase output end is connected with the three-phase input end of first isolating switch (44);
The said driving circuit (41) that directly drives is used for the drive signal of directly driving of the PLC controller (2) that receives is converted into and directly drives driving pulse and drive directly driven wind-powered current transformer (42) unsteady flow operation;
Said first isolating switch (44) is realized the closed of self through the steering order S3 that receives PLC controller (2) or is turn-offed; Its three-phase input end is connected with the three-phase output end of directly driven wind-powered current transformer (42), and its three-phase output end is connected with the winding (1) of isolating transformer (46);
Said second contactor (33) is realized the closed of self through the steering order S2 that receives PLC controller (2) or is turn-offed; Its three-phase input end is connected with the three-phase output end of frequency converter (31), and its three-phase output end is connected with the three-phase input end of second threephase asynchronous (35);
Said second threephase asynchronous (35) is with second speed probe (37) and double-fed fan motor unit (39) is coaxial successively is connected, and the three-phase input end of second threephase asynchronous (35) is connected with the three-phase output end of second contactor (33);
Said second speed probe (37) is used for sending rotation speed n to PLC controller (2)
2Signal, itself and second threephase asynchronous (35) and coaxial connection of double-fed fan motor unit (39), and second speed probe (37) is positioned at the centre of second threephase asynchronous (35) and double-fed fan motor unit (39);
Said double-fed fan motor unit (39) is connected with second speed probe (37) and second threephase asynchronous (35) successively; Its stator side three-phase port not only is connected with the three-phase input end of second isolating switch (45); And be connected with the three-phase output end of double-fed fan motor current transformer (43), its rotor-side three-phase port is connected with the three-phase input end of double-fed fan motor current transformer (43);
Said double-fed fan motor current transformer (43) is realized the unsteady flow operation through the double-fed driving pulse that receives double-fed driving circuit (40); Its three-phase input end is connected with the rotor-side three-phase port of double-fed fan motor unit (39), and its three-phase output end is connected with the three-phase input end of second isolating switch (45);
Said double-fed driving circuit (40) is used for the double-fed drive signal of the PLC controller (2) that receives is converted into the operation of double-fed driving pulse driving double-fed fan motor current transformer (43) unsteady flow;
Said second isolating switch (45) is realized the closed of self through the steering order S4 that receives PLC controller (2) or is turn-offed; Its three-phase input end not only is connected with the three-phase output end of double-fed fan motor current transformer (43); And be connected with the stator side three-phase port of double-fed fan motor unit (39), its three-phase output end is connected with the winding (2) of isolating transformer (46);
Said isolating transformer (46) comprises winding (1), winding (2) and (3) three parts of winding; Be used for laboratory electrical network (47), directly driven wind-powered current transformer (42) and double-fed fan motor current transformer (43) are isolated in twos; Wherein winding (1) is connected with the three-phase output end of first isolating switch (44); Winding (2) is connected with the three-phase output end of second isolating switch (45), and winding (3) is connected with laboratory electrical network (47).
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