CN101710816A - Remote automatic switching method of DC excitation source of AC exciter - Google Patents
Remote automatic switching method of DC excitation source of AC exciter Download PDFInfo
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- CN101710816A CN101710816A CN200910023924A CN200910023924A CN101710816A CN 101710816 A CN101710816 A CN 101710816A CN 200910023924 A CN200910023924 A CN 200910023924A CN 200910023924 A CN200910023924 A CN 200910023924A CN 101710816 A CN101710816 A CN 101710816A
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- field suppression
- suppression switch
- excitation
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- logic controller
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Abstract
The invention discloses a remote automatic switching method of a DC excitation source of an AC exciter. A magnetic blow-out switch which can be remotely controlled is arranged in the DC excitation source loop of the AC exciter, a magnetic blow-out switch closing relay and a magnetic blow-out switch relay are arranged in a programmable controller cabinet, and the programmable controller sends signals to control the switching on/ off of the relay; switching on/off control signals are sent to the magnetic blow-out switch which can be remotely controlled in the DC excitation source loop of the AC exciter; the sending of the control signals is subject to internal programming and logic linkage by the assistant contact on/off signal of the generator synchronization vacuum circuit breaker input externally by the programmable controller; system programming is used for realizing the remote automatic switching function of the DC excitation source of the AC exciter to realize a programmed operation mode and satisfy the remote automatic switching function of the DC excitation source of the AC exciter on the unmanned site.
Description
Technical field
The present invention relates to the brushless excitation generator technical field, be specifically related to blast furnace gas excess pressure power generating device and throw annealing method with the remote auto of the AC excitation machine stator dc excitation power of brushless excitation generator.
Background technology
At present, both at home and abroad blast furnace gas excess pressure power generating device moves back function with the remote auto throwing of all being unrealized of the AC excitation machine stator dc excitation power of brushless excitation generator.Be accompanied by the continuous rising of industrial automatization, the imperfection of this technology is displaying slowly.Because blast furnace gas excess pressure power generating device is more special with the brushless excitation generator operating condition, the generator tripping off-the-line is more frequent, and after each generator tripping off-the-line, the tripping operation of the AC excitation machine stator dc excitation power field suppression switch of the brushless excitation generator of all will interlocking.All need the professional and technical personnel according to the field apparatus running status before each start, artificial judgement, be chosen under the appropriate condition, the field suppression switch of the AC excitation of manually closing machine stator dc excitation power to realize energized circuit power supply input, can't realize that on-the-spot unattended operation remote auto throws/move back operation, so, this execute-in-place pattern needs the special messenger to be responsible for, and is unfavorable for intelligent control, and operation cost is bigger.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the object of the present invention is to provide blast furnace gas excess pressure power generating device to throw annealing method with the remote auto of the AC excitation machine stator dc excitation power of brushless excitation generator, realize the operator scheme of sequencing, satisfy the on-the-spot unattended remote auto throwing of AC excitation machine stator dc excitation power and move back function.
In order to achieve the above object, the technical scheme taked of the present invention is:
The remote auto of AC excitation machine stator dc excitation power is thrown annealing method, comprises the following steps:
The first step, a remote controlled electronic control field suppression switch that has switching winding and closing coil is set in the AC excitation machine stator dc excitation power loop of blast furnace gas excess pressure power generating device with brushless excitation generator, realize the actuator that the remote auto throwing is moved back as AC excitation machine stator dc excitation power, this field suppression switch is minimum is with one often to open auxiliary contact;
Second step, in Programmable Logic Controller PLC cabinet, set up a field suppression switch closing relay, a field suppression switch separating brake relay, often open auxiliary contact and connect for one of closing relay with the closing coil of field suppression switch, often open auxiliary contact and connect for one of the separating brake relay with the switching winding of field suppression switch, to be connected on the control power supply of 220VDC after these two branch road parallel connections then, by the on/off of sending two relays more than the signal controlling after the comprehensive external information of Programmable Logic Controller PLC, send respectively to the field suppression switch closing coil of the AC excitation machine stator dc excitation power of brushless excitation generator or switching winding that field suppression switch closes a floodgate or the control signal of field suppression switch separating brake, guarantee that the throwing of AC excitation machine stator dc excitation power is moved back reliably;
The 3rd step, the generator connecting in parallel with system vacuum circuit-breaker auxiliary contact on/off signal of outside input, the rotary speed detecting signal of blast furnace gas excess pressure power generating device, the branch/"on" position signal of field suppression switch auxiliary contact, electric resultant fault stopping signal are input to Programmable Logic Controller PLC inside, programme and logic chain;
In the 4th step, specifically programming and logic are chain,
When generator connecting in parallel with system vacuum circuit-breaker auxiliary contact is in open position, during the rotating speed of blast furnace gas excess pressure power generating device 〉=95% rated speed, does Programmable Logic Controller PLC send the request signal that an AC exciter stator excitation power supply drops into by man-machine interface to operating personnel? if behind the machine of rising, do not need generator connecting in parallel with system, then operating personnel need not anyly select; If need generator connecting in parallel with system behind the machine of rising, then operating personnel's selection is, send the signal that puts into excitation that a pulsewidth is 0.5S by Programmable Logic Controller PLC, the adhesive of control field suppression switch closing relay, thus it is electric to make that the field suppression switch closing coil gets, and field suppression switch closes a floodgate, be input to the field suppression switch auxiliary contact closure of Programmable Logic Controller PLC, it is shown as field suppression switch and closes a floodgate on Programmable Logic Controller PLC, so far, AC exciter stator excitation power supply remote auto input process finishes;
When in unit running process; if the electric resultant fault stopping signal of input Programmable Logic Controller PLC system is reported to the police or Programmable Logic Controller PLC internal system when detecting the heavy fault-signal of robot control system(RCS) and reporting to the police; then by the Programmable Logic Controller PLC signal that to send a pulsewidth be 0.5S; the adhesive of control field suppression switch separating brake relay; thereby make the field suppression switch switching winding get; the field suppression switch separating brake; the field suppression switch auxiliary contact that is input to Programmable Logic Controller PLC disconnects; it is shown as the field suppression switch separating brake on Programmable Logic Controller PLC; so far, AC exciter stator excitation power supply remote auto withdraws from the process end.
Because blast furnace gas excess pressure power generating device can't be thrown the problem of moving back by remote auto with the AC excitation machine stator dc excitation power of brushless excitation generator before the invention solves, so realized the operator scheme of sequencing, satisfied on-the-spot unattended Long-distance Control and thrown/move back function automatically.
Embodiment
Be used for blast furnace gas excess pressure power generating device and throw annealing method, comprise the following steps: with the remote auto of the AC excitation machine stator dc excitation power of brushless excitation generator
The first step, a remote controlled electronic control field suppression switch that has switching winding and closing coil is set in the AC excitation machine stator dc excitation power loop of blast furnace gas excess pressure power generating device with brushless excitation generator, realize the actuator that the remote auto throwing is moved back as AC excitation machine stator dc excitation power, this field suppression switch is minimum is with one often to open auxiliary contact
Second step, in Programmable Logic Controller PLC cabinet, set up a field suppression switch closing relay, a field suppression switch separating brake relay, often open auxiliary contact and connect for one of closing relay with the closing coil of field suppression switch, often open auxiliary contact and connect for one of the separating brake relay with the switching winding of field suppression switch, to be connected on the control power supply of 220VDC after these two branch road parallel connections then, by the on/off of sending two relays more than the signal controlling after the comprehensive external information of Programmable Logic Controller PLC, send respectively to the field suppression switch closing coil of the AC excitation machine stator dc excitation power of brushless excitation generator or switching winding that field suppression switch closes a floodgate or the control signal of field suppression switch separating brake, guarantee that the throwing of AC excitation machine stator dc excitation power moves back reliably
The 3rd step; the generator connecting in parallel with system vacuum circuit-breaker auxiliary contact on/off signal of outside input, the rotary speed detecting signal of blast furnace gas excess pressure power generating device, the branch/"on" position signal of field suppression switch auxiliary contact, electric resultant fault stopping signal are input to Programmable Logic Controller PLC inside; programme and logic chain
In the 4th step, specifically programming and logic are chain,
When generator connecting in parallel with system vacuum circuit-breaker auxiliary contact is in open position, during the rotating speed of blast furnace gas excess pressure power generating device 〉=95% rated speed, does Programmable Logic Controller PLC send the request signal that an AC exciter stator excitation power supply drops into by man-machine interface to operating personnel? if behind the machine of rising, do not need generator connecting in parallel with system, then operating personnel need not anyly select; If need generator connecting in parallel with system behind the machine of rising, then operating personnel's selection is, send the signal that puts into excitation that a pulsewidth is 0.5S by Programmable Logic Controller PLC, the adhesive of control field suppression switch closing relay, thus it is electric to make that the field suppression switch closing coil gets, and field suppression switch closes a floodgate, be input to the field suppression switch auxiliary contact closure of Programmable Logic Controller PLC, it is shown as field suppression switch and closes a floodgate on Programmable Logic Controller PLC, so far, AC exciter stator excitation power supply remote auto input process finishes;
When in unit running process; if the electric resultant fault stopping signal of input Programmable Logic Controller PLC system is reported to the police or Programmable Logic Controller PLC internal system when detecting the heavy fault-signal of robot control system(RCS) and reporting to the police; then by the Programmable Logic Controller PLC signal that to send a pulsewidth be 0.5S; the adhesive of control field suppression switch separating brake relay; thereby make the field suppression switch switching winding get; the field suppression switch separating brake; the field suppression switch auxiliary contact that is input to Programmable Logic Controller PLC disconnects; it is shown as the field suppression switch separating brake on Programmable Logic Controller PLC; so far, AC exciter stator excitation power supply remote auto withdraws from the process end.
Claims (3)
1. the remote auto of AC excitation machine stator dc excitation power is thrown annealing method, it is characterized in that, comprises the following steps:
The first step, a remote controlled electronic control field suppression switch that has switching winding and closing coil is set in the AC excitation machine stator dc excitation power loop of blast furnace gas excess pressure power generating device with brushless excitation generator, realize the actuator that the remote auto throwing is moved back as AC excitation machine stator dc excitation power, this field suppression switch is minimum is with one often to open auxiliary contact;
Second step, in Programmable Logic Controller PLC cabinet, set up a field suppression switch closing relay, a field suppression switch separating brake relay, often open auxiliary contact and connect for one of closing relay with the closing coil of field suppression switch, often open auxiliary contact and connect for one of the separating brake relay with the switching winding of field suppression switch, to be connected on the control power supply of 220VDC after these two branch road parallel connections then, by the on/off of sending two relays more than the signal controlling after the comprehensive external information of Programmable Logic Controller PLC, send respectively to the field suppression switch closing coil of the AC excitation machine stator dc excitation power of brushless excitation generator or switching winding that field suppression switch closes a floodgate or the control signal of field suppression switch separating brake, guarantee that the throwing of AC excitation machine stator dc excitation power is moved back reliably;
The 3rd step, the generator connecting in parallel with system vacuum circuit-breaker auxiliary contact on/off signal of outside input, the rotary speed detecting signal of blast furnace gas excess pressure power generating device, the branch/"on" position signal of field suppression switch auxiliary contact, electric resultant fault stopping signal are input to Programmable Logic Controller PLC inside, programme and logic chain;
In the 4th step, specifically programming and logic are chain.
2. the remote auto of AC excitation machine stator dc excitation power according to claim 1 is thrown annealing method, it is characterized in that, when concrete programming and logic are chain, when generator connecting in parallel with system vacuum circuit-breaker auxiliary contact is in open position, during the rotating speed of blast furnace gas excess pressure power generating device 〉=95% rated speed, does Programmable Logic Controller PLC send the request signal that an AC exciter stator excitation power supply drops into by man-machine interface to operating personnel? if behind the machine of rising, do not need generator connecting in parallel with system, then operating personnel need not anyly select; If need generator connecting in parallel with system behind the machine of rising, then operating personnel's selection is, send the signal that puts into excitation that a pulsewidth is 0.5S by Programmable Logic Controller PLC, the adhesive of control field suppression switch closing relay, thus it is electric to make that the field suppression switch closing coil gets, and field suppression switch closes a floodgate, be input to the field suppression switch auxiliary contact closure of Programmable Logic Controller PLC, it is shown as field suppression switch and closes a floodgate on Programmable Logic Controller PLC, so far, AC exciter stator excitation power supply remote auto input process finishes.
3. the remote auto of AC excitation machine stator dc excitation power according to claim 1 is thrown annealing method; it is characterized in that; when concrete programming and logic are chain; when in unit running process; if the electric resultant fault stopping signal of input Programmable Logic Controller PLC system is reported to the police or Programmable Logic Controller PLC internal system when detecting the heavy fault-signal of robot control system(RCS) and reporting to the police; then by the Programmable Logic Controller PLC signal that to send a pulsewidth be 0.5S; the adhesive of control field suppression switch separating brake relay; thereby make the field suppression switch switching winding get; the field suppression switch separating brake; the field suppression switch auxiliary contact that is input to Programmable Logic Controller PLC disconnects; it is shown as the field suppression switch separating brake on Programmable Logic Controller PLC; so far, AC exciter stator excitation power supply remote auto withdraws from the process end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100239242A CN101710816B (en) | 2009-09-15 | 2009-09-15 | Remote automatic switching method of DC excitation source of AC exciter |
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| CN2009100239242A CN101710816B (en) | 2009-09-15 | 2009-09-15 | Remote automatic switching method of DC excitation source of AC exciter |
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| CN101710816A true CN101710816A (en) | 2010-05-19 |
| CN101710816B CN101710816B (en) | 2012-05-30 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102287277A (en) * | 2011-04-19 | 2011-12-21 | 东南大学 | Intelligent independent control method for unattended platform generator set in low-temperature and low-pressure environment |
| CN102621406A (en) * | 2012-04-11 | 2012-08-01 | 南通中远船务自动化有限公司 | Phase sequence detection method for high-voltage system |
| CN107797055A (en) * | 2017-10-26 | 2018-03-13 | 大唐国际发电股份有限公司张家口发电厂 | A kind of degaussing switch jump lock detecting system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1913337A (en) * | 2006-08-18 | 2007-02-14 | 四川东风电机厂有限公司 | PLC silicon-controlled static exciting control system |
| CN1913339A (en) * | 2006-09-05 | 2007-02-14 | 四川东风电机厂有限公司 | PLC silicon-controlled static exciting system of synchronous generater |
| CN101008330B (en) * | 2006-12-29 | 2010-05-12 | 本溪钢铁(集团)有限责任公司 | Starting method of blast-furnace top gas recovery turbine generator |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102287277A (en) * | 2011-04-19 | 2011-12-21 | 东南大学 | Intelligent independent control method for unattended platform generator set in low-temperature and low-pressure environment |
| CN102287277B (en) * | 2011-04-19 | 2013-04-03 | 东南大学 | Intelligent independent control method for unattended platform generator set in low-temperature and low-pressure environment |
| CN102621406A (en) * | 2012-04-11 | 2012-08-01 | 南通中远船务自动化有限公司 | Phase sequence detection method for high-voltage system |
| CN107797055A (en) * | 2017-10-26 | 2018-03-13 | 大唐国际发电股份有限公司张家口发电厂 | A kind of degaussing switch jump lock detecting system |
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| CN101710816B (en) | 2012-05-30 |
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