CN102723244A - Control method for permanent-magnetic circuit breaker - Google Patents
Control method for permanent-magnetic circuit breaker Download PDFInfo
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- CN102723244A CN102723244A CN2012101940975A CN201210194097A CN102723244A CN 102723244 A CN102723244 A CN 102723244A CN 2012101940975 A CN2012101940975 A CN 2012101940975A CN 201210194097 A CN201210194097 A CN 201210194097A CN 102723244 A CN102723244 A CN 102723244A
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- 206010044565 Tremor Diseases 0.000 claims description 2
- 239000003990 capacitor Substances 0.000 description 5
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- 238000004146 energy storage Methods 0.000 description 2
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- 238000013459 approach Methods 0.000 description 1
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- 238000005265 energy consumption Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
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Abstract
The invention discloses a control method for a permanent-magnetic circuit breaker. The control method is used for a permanent-magnetic circuit breaker control system and includes steps of signal recording and collecting, signal judging and switching on and off pulse control. The control method for the permanent-magnetic circuit breaker is simple in implementation, reliability in switching on and off of the permanent-magnetic circuit breaker is guaranteed while energy output is reduced, the permanent-magnetic circuit breaker can be switched on and off quickly, the control method is specially suitable for permanent-magnetic reclosers which need to be frequently switched on and off (reclosed), and products based on the control method can be widely mounted on main lines or major branch lines.
Description
Technical field
The present invention relates to the control technology of permanent-magnet breaker, be specially a kind of method that is used to control reliable, the quick divide-shut brake of permanent-magnet breaker.
Background technology
In recent years, along with continuous guiding and the modern electronic technology and the development of computer of intelligent breaker and the intelligent notion of circuit breaker, particularly the realization of permanent magnetism technology makes the intellectuality of circuit breaker obtain breakthrough.Permanent-magnet breaker also is that good insulation preformance, connecting-disconnecting function are strong, divide-shut brake speed is fast, adopts epoxy resin not have the SF6 environmental protection and be celebrated with its high-performance, highly reliable, non-maintaining, environmental protection and energy saving; This also is the basic necessary condition of intelligent breaker, also meets the intelligent advanced theory of circuit breaker and promotes and the target aim of using.Scientific research institution of tens of family and producer such as ABB are arranged at present both at home and abroad; The Huaneng Group, four directions; Central South University; Beijing section is sharp, and Yangzhou new ideas etc. all drop into a large amount of manpower and materials research and design based on the product of permanent magnet mechanism technical characterstic with the control theory, have developed some Related products and have been applied to power network and obtained certain effect.Though the notion of permanent magnet mechanism proposes early, really realizing and having practicality but is in recent years, so the performance of development limitation not enough and range of application is inevitable.Therefore based on the increasing of the series of products of permanent magnetism technology, the expansion of range of application, the reinforcement of function, the innovation of particularly control aspect will be development in future trend.
Selection on existing its driving power of permanent-magnet breaker controller is consistent, promptly adopts jumbo alminium electrolytic condenser to give the big electric current of divide-shut brake coil abrupt release, carries out divide-shut brake thereby produce magnetic field.Its output control logic mainly contains following a few general orientation:
(1) logic that adopts electronic type to participate in output control near switch, the output of capacitive energy is along with turn-offing near the change in location of switch.The advantage of this mode is that signal is sensitive, clean; But the difficult point of this mode is to require and harshness near the installation site of switch; Easily appearance sense too early change in location cause closing a floodgate unsuccessful, sometimes even occur two and sense the position simultaneously near switch and cause the circuit breaker tripping.
(2) electronic proximity switch does not participate in exporting the logic of control, only as the position indication, and the burst length of fixing output control.The advantage of this mode is reliable, but the shortcoming of this method also is significant, owing to can't learn whether divide-shut brake puts in place; Often for ensureing the divide-shut brake success; Its fixing output is than really needing output time to reach more than 10 millisecond, in addition have longer, this has flooded the quick-speed turning on-off performance of permanent-magnet breaker fully; More serious is to make electric capacity release energy too much, occurs the fatal defective of off-capacity when carrying out reclosing again.
(3) utilize high speed algorithm and high precision electric current transducer to gather match divide-shut brake output current wave,, thereby judge whether divide-shut brake is successful with the conventional comparison of wave shape of setting in advance.The advantage of this mode is highly reliable and has energy-saving effect, but this mode cost is high, implements more complicated, and the curve similarity is difficult to define.
In sum, there is the defective that reliability is high, energy saving is high, implementation simply can not effectively be taken into account in the prior art at present.
Summary of the invention
To the problems referred to above, the control method that the present invention provides a kind of implementation simply to be used for permanent-magnet breaker is controlled permanent-magnet breaker based on this control method, and permanent-magnet breaker can carry out divide-shut brake reliably, apace, and can practice thrift more energy consumption.
The technical scheme that the present invention is adopted for its technical problem of solution is:
A kind of control method that is used for permanent-magnet breaker; Be used for a permanent-magnet breaker control system; Said permanent-magnet breaker control system comprises permanent-magnet breaker, measurement and control unit, is used to drive the circuit breaker driver element of permanent-magnet breaker divide-shut brake action and be arranged at the position transducer that permanent-magnet breaker one side is used to detect the circuit-breaker switching on-off position; The output of position transducer is connected with measurement and control unit, and measurement and control unit is to the pulse of circuit breaker driver element output divide-shut brake, and said control method comprises:
The step that signal record is gathered: after the pulse of output divide-shut brake, the output duration of measurement and control unit recording impulse also passes through the divide-shut brake positional information that position transducer is gathered permanent-magnet breaker;
The step that signal is judged: measurement and control unit is relatively exported the size of the essential operate time of duration and permanent-magnet breaker divide-shut brake, and judges through the divide-shut brake positional information whether permanent-magnet breaker divide-shut brake position is qualified;
The pulse controlled step of divide-shut brake: when essential operate time and the permanent-magnet breaker divide-shut brake position judgment that is not less than the permanent-magnet breaker divide-shut brake when the output duration is qualified; Measurement and control unit stops to the pulse of circuit breaker driver element output divide-shut brake, otherwise continues output.
Wherein, Said measurement and control unit comprises first control unit and second control unit; Second control unit accomplishes the step of signal judgement and to first control unit output judged result, first control unit is controlled second control unit to the pulse of circuit breaker driver element output divide-shut brake.Said first control unit is the DSP module, and second control unit is the CPLD unit.
The divide-shut brake positional information that position transducer is gathered is trembled Filtering Processing through disappearing before judgement.
Said position transducer is near switch.
The present invention utilizes measurement and control unit that the duration of divide-shut brake output pulse and the divide-shut brake position of circuit breaker are carried out qualified judgement; Just stop the output of divide-shut brake pulse when having only two set conditions simultaneously qualified; Realize simple; The duration of having guaranteed pulse output can be less than the essential operate time of permanent-magnet breaker self, the divide-shut brake that the pulse of having avoided effectively causing because of the mistake of the divide-shut brake positional information that is detected stops being caused the too early mistake that gets nowhere; Because the opening and closing state of circuit breaker can be surveyed, therefore can avoid the meaningless lasting output of divide-shut brake pulse, thereby the energy of guaranteeing large bulk capacitance can suitably discharge good energy-conserving effect.In sum; The present invention has reduced the output of energy when guaranteeing the reliable divide-shut brake of permanent-magnet breaker; Permanent-magnet breaker can quick-speed turning on-off; Be specially adapted to frequently to cut-off on the permanent magnetism automatic circuit of (reclosing), can extensively be installed on backbone or the great branched line based on the product of this control method.
In addition, when measurement and control unit further adopted first control unit and second control unit to realize, the mode of this layering Combination Control can further perfect the reliability of control.
Description of drawings
Further explain below in conjunction with accompanying drawing and embodiment:
Fig. 1 is a control principle sketch map of the present invention;
Fig. 2 is a kind of judgement control examples of the present invention;
Fig. 3 judges control examples for the present invention is another kind of.
Embodiment
With reference to Fig. 1, a kind of control method that is used for permanent-magnet breaker is used for a permanent-magnet breaker control system.The permanent-magnet breaker control system comprises permanent-magnet breaker 1, measurement and control unit 2, is used to drive the circuit breaker driver element 3 of permanent-magnet breaker 1 divide-shut brake action and be arranged at the position transducer 4 that permanent-magnet breaker 1 one sides are used to detect the circuit-breaker switching on-off position; The output of position transducer 4 is connected with measurement and control unit 2, and measurement and control unit 2 is to the 3 output divide-shut brake pulses of circuit breaker driver element.
Permanent-magnet breaker 1 has one and accomplishes required essential operate time of the T0 of separating brake or the whole action of closing a floodgate, this T0 owing to the discreteness of each permanent-magnet breaker body from and have a relativity.The judgement of this time is to carry out the inline timing of factory at every complete equipment, approaches automatic adjustment one by one and gets through output repeatedly, and this adjustment process can utilize the circuit breaker control system to realize.The control mode of tradition divide-shut brake pulse set time output is to guarantee this set time much larger than above-mentioned essential operate time of T0, thereby ensures the divide-shut brake success, and this control method has cut-offs defective slow, that power consumption is high.The present invention with this must operate time T0 directly use as a Rule of judgment, can overcome the defective of above-mentioned pulse set time output effectively, concrete determination methods is described in the back.
Continuation is with reference to Fig. 1; Circuit breaker driver element 3 is the part between two frame of broken lines in the right among the figure; It comprises that an IGBT full-bridge circuit, IGBT drive a loop and a jumbo electrolytic capacitor; Permanent-magnet breaker 1 coil is connected between two brachium pontis of full-bridge circuit, and the two ends of electrolytic capacitor are connected with the two ends of full-bridge circuit.IGBT drives the divide-shut brake pulse signal that the loop receives measurement and control unit 2 outputs; Produce the shutoff of opening that IGBT drive signal 1,2,3,4 is used to drive each switching tube on the full-bridge circuit based on this pulse signal; Make electrolytic capacitor in a different manner to the coil power supply of permanent-magnet breaker 1, produce magnetic field when coil is flowed through separating brake or switching current and promote moving separating brake unshakable in one's determination or combined floodgate.In order to guarantee that electrolytic capacitor can have enough energy and carry out the divide-shut brake power supply, generally can be provided with the transducer that is used to detect its voltage size on the electrolytic capacitor, the output of this transducer is delivered in the measurement and control unit, carries out the under-voltage judgement of energy storage.
Position transducer 4 is used for the circuit-breaker switching on-off position is detected, and these position transducer 4 general employings are realized near switch during realization.The installation site of this position transducer 4 does not need exacting terms; Produce wrong signal even it is responded to too early and also can not cause the unsuccessful situation of divide-shut brake to occur basically, because the position detection signal of position transducer 4 is just as one of them Rule of judgment in control method of the present invention.
Describe in the face of control method of the present invention down.This control method comprises the step of signal record collection, step and the pulse controlled step of divide-shut brake that signal is judged.
The step of signal record collection is: after the pulse of output divide-shut brake, and the output duration of measurement and control unit 2 recording impulses and the divide-shut brake positional information of gathering permanent-magnet breaker 1 through position transducer 4.
The step that signal is judged is: measurement and control unit 2 is relatively exported the size of the essential operate time of duration and permanent-magnet breaker 1 divide-shut brake, and judges through the divide-shut brake positional information whether permanent-magnet breaker divide-shut brake position is qualified.In order to guarantee the accurate of position detection signal, the divide-shut brake positional information that position transducer 4 is gathered needs tremble Filtering Processing through disappearing before judgement.
The pulse controlled step of divide-shut brake is: when essential operate time and the permanent-magnet breaker divide-shut brake position judgment that is not less than permanent-magnet breaker 1 divide-shut brake when the output duration is qualified; Measurement and control unit 2 stops to the 3 output divide-shut brake pulses of circuit breaker driver element, otherwise continues output.
In order to perfect the reliability of measurement and control unit; Measurement and control unit 2 preferably includes first control unit 21 and second control unit 22; Second control unit 22 accomplishes the step of signal judgement and to first control unit, 21 output judged results, first control unit, 21 controls, second control unit 22 is to the 3 output divide-shut brake pulses of circuit breaker driver element.Preferably, first control unit 21 is the DSP module, and second control unit 22 is the CPLD unit.Shown in present embodiment, the function such as the CPLD unit is judged except accomplishing the pulse output time, the divide-shut brake position signalling is judged, the divide-shut brake pulse is left, can also accomplish functions such as the under-voltage judgement of energy storage, the judgement of remote control divide-shut brake, the judgement of handle divide-shut brake.
Lift concrete embodiment below control principle of the present invention is described.
As shown in Figures 2 and 3, be the example explanation with the separating brake process.Suppose separating brake pulse t0 output at a time, low level is effective.Generally speaking, the permanent-magnet breaker action of separating brake pulse output back, measurement and control unit can be monitored the separating brake position signalling of separating brake pulse output duration and permanent-magnet breaker.It is T0 that permanent-magnet breaker is accomplished the whole action of separating brake required essential operate time, and it is T1 that permanent-magnet breaker is judged as the qualified time of separating brake position, and the separating brake pulse will stop to export at the t0+T0 and a bigger moment of T1 so.Fig. 2 is a kind of accurately situation of separating brake position input, and in the present embodiment, the time point of T1 is greater than the time point of t0+T0, so the separating brake pulse stops output constantly at T1.Fig. 3 is separating brake position signalling a kind of situation of induction too early; In this embodiment, the separating brake pulse stops output constantly at t0+T0, but not stops output at the moment of mistake T1; The mistake that promptly must can place the induction too early of separating brake position signalling operate time effectively and cause; In addition, position transducer has signal output, explains that circuit breaker has produced the separating brake action; Generally speaking wherein also can the separating brake success in the T0, the divide-shut brake position judgment can not appear basically for passing and pulse output duration is judged the situation that permanent-magnet breaker under the situation of passing can't successful divide-shut brake.
Execution mode of the present invention is not restricted to the described embodiments, as long as it reaches technique effect of the present invention with essentially identical means, all should belong to protection scope of the present invention.
Claims (5)
1. control method that is used for permanent-magnet breaker; Be used for a permanent-magnet breaker control system; Said permanent-magnet breaker control system comprises permanent-magnet breaker (1), measurement and control unit (2), is used to drive the circuit breaker driver element (3) of permanent-magnet breaker (1) divide-shut brake action and be arranged at the position transducer (4) that permanent-magnet breaker (1) one side is used to detect the circuit-breaker switching on-off position; The output of position transducer (4) is connected with measurement and control unit (2); Measurement and control unit (2) is characterized in that to the pulse of circuit breaker driver element (3) output divide-shut brake said control method comprises:
The step that signal record is gathered: after the pulse of output divide-shut brake, the output duration of measurement and control unit (2) recording impulse also passes through the divide-shut brake positional information that position transducer (4) is gathered permanent-magnet breaker (1);
The step that signal is judged: measurement and control unit (2) is relatively exported the size of the essential operate time of duration and permanent-magnet breaker (1) divide-shut brake, and judges through the divide-shut brake positional information whether permanent-magnet breaker divide-shut brake position is qualified;
The pulse controlled step of divide-shut brake: when essential operate time and the permanent-magnet breaker divide-shut brake position judgment that is not less than permanent-magnet breaker (1) divide-shut brake when the output duration is qualified; Measurement and control unit (2) stops to the pulse of circuit breaker driver element (3) output divide-shut brake, otherwise continues output.
2. a kind of control method that is used for permanent-magnet breaker according to claim 1; It is characterized in that said measurement and control unit (2) comprises first control unit (21) and second control unit (22); Second control unit (22) accomplishes the step of signal judgement and to first control unit (21) output judged result, first control unit (21) control second control unit (22) is to the pulse of circuit breaker driver element (3) output divide-shut brake.
3. a kind of control method that is used for permanent-magnet breaker according to claim 2 is characterized in that said first control unit (21) is the DSP module, and second control unit (22) is the CPLD unit.
4. a kind of control method that is used for permanent-magnet breaker according to claim 1 is characterized in that the divide-shut brake positional information that position transducer (4) gathered trembles Filtering Processing through disappearing before judgement.
5. a kind of control method that is used for permanent-magnet breaker according to claim 1 is characterized in that said position transducer (4) is near switch.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210194097.5A CN102723244B (en) | 2012-06-13 | 2012-06-13 | Control method for permanent-magnetic circuit breaker |
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| CN201210194097.5A CN102723244B (en) | 2012-06-13 | 2012-06-13 | Control method for permanent-magnetic circuit breaker |
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| CN102723244A true CN102723244A (en) | 2012-10-10 |
| CN102723244B CN102723244B (en) | 2014-05-07 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106128823A (en) * | 2016-08-11 | 2016-11-16 | 珠海许继电气有限公司 | A kind of permanent magnet circuit breaker control system based on double under-voltage information and method |
| CN106783363A (en) * | 2016-11-16 | 2017-05-31 | 合肥普望电子有限责任公司 | A kind of high breaking ammeter external breaker control system |
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| CN101867227A (en) * | 2010-07-01 | 2010-10-20 | 唐山盾石电气有限责任公司 | Method and device for electrically controlling high voltage circuit breaker to switch on or switch off |
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2012
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Patent Citations (7)
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| CN2423644Y (en) * | 2000-01-25 | 2001-03-14 | 崔江海 | Multi-pulse circuit breaker |
| JP2002118965A (en) * | 2000-10-11 | 2002-04-19 | Oaks:Kk | Control unit of apparatus suppressing voltage fluctuation due to motor by using thyristor |
| CN1917110A (en) * | 2006-07-19 | 2007-02-21 | 宁波天安（集团）股份有限公司 | Power supply pulse controller of breaker |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106128823A (en) * | 2016-08-11 | 2016-11-16 | 珠海许继电气有限公司 | A kind of permanent magnet circuit breaker control system based on double under-voltage information and method |
| CN106783363A (en) * | 2016-11-16 | 2017-05-31 | 合肥普望电子有限责任公司 | A kind of high breaking ammeter external breaker control system |
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| CN102723244B (en) | 2014-05-07 |
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