CN102723244B - Control method for permanent-magnetic circuit breaker - Google Patents
Control method for permanent-magnetic circuit breaker Download PDFInfo
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- CN102723244B CN102723244B CN201210194097.5A CN201210194097A CN102723244B CN 102723244 B CN102723244 B CN 102723244B CN 201210194097 A CN201210194097 A CN 201210194097A CN 102723244 B CN102723244 B CN 102723244B
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000005259 measurement Methods 0.000 claims description 27
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- 230000008569 process Effects 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 description 7
- 239000003990 capacitor Substances 0.000 description 5
- 230000007547 defect Effects 0.000 description 4
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- 238000011161 development Methods 0.000 description 3
- 230000005389 magnetism Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
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- 238000013461 design 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 for controlling the method for reliable, the quick divide-shut brake of permanent-magnet breaker.
Background technology
In recent years, along with intelligent breaker and the intelligent continuous guiding of concept of circuit breaker and the development of modern electronic technology and computer technology, the particularly realization of permanent magnetism technology, make the intellectuality of circuit breaker obtain breakthrough.Permanent-magnet breaker is also that good insulation preformance, connecting-disconnecting function are strong, divide-shut brake speed is fast, adopts epoxy resin famous without SF6 environmental protection with its high-performance, highly reliable, non-maintaining, environmental protection and energy saving, this is also the basic necessary condition of intelligent breaker, also meets the target aim of the intelligent Advanced Idea propagation and employment of circuit breaker.There are at present tens of scientific research institutions and producer both at home and abroad as ABB, Huaneng Group, four directions, Central South University, Beijing section is sharp, Yangzhou new ideas etc. all drop into the product of a large amount of manpower and materials research and design based on permanent magnet mechanism technical characterstic and the theory of control, have developed some Related products and have been applied to power network and obtained certain effect.Although the concept of permanent magnet mechanism proposes early, really realizing and having practicality is but in recent years, so the performance of development limitation not enough and range of application is inevitable.Therefore increasing of the series of products based on permanent magnetism technology, the expansion of range of application, the reinforcement of function, the innovation of particularly control aspect will be following development trend.
Selection on existing its driving power of permanent-magnet breaker controller is consistent, adopts jumbo alminium electrolytic condenser to the large electric current of divide-shut brake coil abrupt release, thereby produce magnetic field, carries out divide-shut brake.Its output control logic mainly contains following a few general orientation:
(1) adopt Electron nearing switch to participate in the logic that output is controlled, the output of capacitive energy is turn-offed along with the change in location of approach switch.The advantage of which is that signal is sensitive, clean, but the difficult point of which is the installation site of approach switch and requires and harshness, easily appearance senses that change in location causes closing a floodgate unsuccessful, even occurs that two approach switchs sense that position causes circuit breaker tripping simultaneously sometimes too early.
(2) electronic proximity switch does not participate in the logic that output is controlled, only as position indication, and the burst length that fixing output is controlled.The advantage of which is reliable, but the shortcoming of the method is also significant, owing to cannot learning whether divide-shut brake puts in place, often for ensureing divide-shut brake success, its fixing output is than really needing output time to reach more than 10 millisecond, and what even have is longer, and this has flooded the quick-speed turning on-off performance of permanent-magnet breaker completely, more serious is that electric capacity is released energy too much, then occurs the defect that off-capacity is fatal while carrying out reclosing.
(3) utilize high speed algorithm and high precision electric current transducer to gather matching divide-shut brake output current wave, with the conventional comparison of wave shape of setting in advance, thereby judge that whether divide-shut brake is successful.The advantage of which is highly reliable and has energy-saving effect, but which cost is high, implements more complicated, and curve similarity is difficult to define.
In sum, in currently available technology, there is the defect that reliability is high, energy saving is high, implementation simply can not effectively be taken into account.
Summary of the invention
For the problems referred to above, the invention provides a kind of implementation simply for the control method of permanent-magnet breaker, based on this control method, permanent-magnet breaker to be controlled, permanent-magnet breaker can carry out divide-shut brake reliably, rapidly, and can save more energy consumption.
The present invention for the technical scheme that its technical problem of solution adopts is:
A kind of control method for permanent-magnet breaker, for a permanent-magnet breaker control system, described permanent-magnet breaker control system comprises permanent-magnet breaker, measurement and control unit, for driving the circuit breaker driver element of permanent-magnet breaker divide-shut brake action and being arranged at the position transducer of permanent-magnet breaker one side for detection of circuit-breaker switching on-off position, the output of position transducer is connected with measurement and control unit, measurement and control unit is to the pulse of circuit breaker driver element output divide-shut brake, and described control method comprises:
The step that signal record gathers: after the pulse of output divide-shut brake, the output duration of measurement and control unit recording impulse also gathers the divide-shut brake positional information of permanent-magnet breaker by position transducer;
The step of signal judgement: measurement and control unit is relatively exported the size of the essential operate time of duration and permanent-magnet breaker divide-shut brake, and judge that by divide-shut brake positional information whether permanent-magnet breaker divide-shut brake position is qualified;
The pulse controlled step of divide-shut brake: when output duration is when to be not less than essential operate time of permanent-magnet breaker divide-shut brake and permanent-magnet breaker divide-shut brake position judgment be qualified, measurement and control unit stops to the pulse of circuit breaker driver element output divide-shut brake, otherwise continues output.
Wherein, described measurement and control unit comprises the first control unit and the second control unit, the step of the second control unit settling signal judgement is also exported judged result to the first control unit, and first control unit control the second control unit is to the pulse of circuit breaker driver element output divide-shut brake.Described the first control unit is DSP module, and the second control unit is CPLD unit.
The divide-shut brake positional information that position transducer gathers is the processing of process Glitch Filter before judgement.
Described position transducer is approach switch.
The present invention utilizes measurement and control unit to carry out qualified judgement to the divide-shut brake output duration of pulse and the divide-shut brake position of circuit breaker, while only having two set conditions simultaneously qualified, just stop the output of divide-shut brake pulse, realize simple, guaranteed that the duration of pulse output can not be less than the essential operate time of permanent-magnet breaker self, has avoided the pulse causing because of the mistake of the divide-shut brake positional information detecting to stop too early the unsuccessful mistake of caused divide-shut brake effectively; 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 guarantee that the energy of 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), the product based on this control method can extensively be installed on backbone or great branched line.
In addition, when measurement and control unit further adopts the first control unit and the second control unit to realize, the mode that this layering combination is controlled can further perfect the reliability of controlling.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, be further detailed:
Fig. 1 is control principle schematic diagram of the present invention;
Fig. 2 is that example is controlled in a kind of judgement of the present invention;
Fig. 3 is that example is controlled in the another kind of judgement of the present invention.
Embodiment
With reference to Fig. 1, a kind of control method for permanent-magnet breaker, for a permanent-magnet breaker control system.Permanent-magnet breaker control system comprises permanent-magnet breaker 1, measurement and control unit 2, for driving the circuit breaker driver element 3 of permanent-magnet breaker 1 divide-shut brake action and being arranged at the position transducer 4 of permanent-magnet breaker 1 one sides for detection of 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 exported divide-shut brake pulse to circuit breaker driver element 3.
Permanent-magnet breaker 1 have one complete separating brake or the whole action of closing a floodgate is required essential operate time T0, this T0 due to the discreteness of each permanent-magnet breaker body from and there is relativity.The judgement of this time is to carry out the inline timing of factory at every complete equipment, through output repeatedly, successively approaches automatic adjustment and gets, and this adjustment process can utilize breaker control system to realize.The control mode of tradition divide-shut brake pulse set time output is to guarantee that this set time is much larger than above-mentioned essential operate time of T0, thereby ensures divide-shut brake success, this control method have cut-off slow, high defect consumes energy.The present invention using this must operate time T0 directly as a Rule of judgment, use, can effectively overcome the defect of above-mentioned pulse set time output, 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 the dotted line frames in the right in figure, it comprises that an IGBT full-bridge circuit, IGBT drive 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 loop to receive the divide-shut brake pulse signal that measurement and control unit 2 is exported, based on this pulse signal genration IGBT, drive signal 1,2,3,4 for driving the shutoff of opening of each switching tube on full-bridge circuit, make electrolytic capacitor in a different manner to the coil power supply of permanent-magnet breaker 1, coil produces magnetic field and promotes moving separating brake unshakable in one's determination or combined floodgate while flowing through separating brake or switching current.In order to guarantee that electrolytic capacitor can have enough energy and carry out divide-shut brake power supply, on electrolytic capacitor, generally can be provided with the transducer for detection of its both end voltage size, the output of this transducer is delivered in measurement and control unit, carries out the under-voltage judgement of energy storage.
Position transducer 4 is for circuit-breaker switching on-off position is detected, and while realizing, the general approach switch that adopts of this position transducer 4 is realized.The installation site of this position transducer 4 does not need exacting terms, even if it is responded to too early, produce wrong signal and also substantially can not cause the unsuccessful situation of divide-shut brake to occur, because be as one of them Rule of judgment at the position detection signal of control method Position Sensor 4 of the present invention.
Below control method of the present invention is described.This control method comprises the step of signal record collection, step and the pulse controlled step of divide-shut brake of signal judgement.
The step that signal record gathers is: after the pulse of output divide-shut brake, the output duration of measurement and control unit 2 recording impulses also gathers the divide-shut brake positional information of permanent-magnet breaker 1 by position transducer 4.
The step that signal judges 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 that by 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 gathers needs through Glitch Filter processing before judgement.
The pulse controlled step of divide-shut brake is: when output duration is when to be not less than essential operate time of permanent-magnet breaker 1 divide-shut brake and permanent-magnet breaker divide-shut brake position judgment be qualified, measurement and control unit 2 stops exporting divide-shut brake pulse to circuit breaker driver element 3, otherwise continues output.
In order to perfect the reliability of measurement and control unit, measurement and control unit 2 preferably includes the first control unit 21 and the second control unit 22, the step of the second control unit 22 settling signal judgements is also exported judged result to the first control unit 21, and the first control unit 21 is controlled the second control unit 22 and exported divide-shut brake pulse to circuit breaker driver element 3.Preferably, the first control unit 21 is DSP module, and the second control unit 22 is CPLD unit.As shown in this embodiment, CPLD unit, except the function such as can complete that pulse output time judgement, the judgement of divide-shut brake position signalling, divide-shut brake pulse are outputed, can also complete the 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 specific embodiment below control principle of the present invention is described.
As shown in Figures 2 and 3, take separating brake process as example explanation.Suppose at a time t0 output of separating brake pulse, Low level effective.Generally, permanent-magnet breaker action after separating brake pulse output, measurement and control unit can be monitored the open position signal of separating brake pulse output duration and permanent-magnet breaker.It is T0 that permanent-magnet breaker completes the whole action of separating brake required essential operate time, and it is T1 that permanent-magnet breaker is judged as the time that open position is qualified, and separating brake pulse will stop output at t0+T0 and a larger moment of T1 so.Fig. 2 is open position input a kind of situation accurately, and in the present embodiment, the time point of T1 is greater than the time point of t0+T0, and therefore separating brake pulse stops output in the T1 moment.Fig. 3 is open position signal a kind of situation of induction too early, in this embodiment, separating brake pulse stops output in the t0+T0 moment, but not stop output at wrong moment T1, the mistake that must can effectively place the induction too early of open position signal operate time and cause, in addition, position transducer has signal output, illustrate that circuit breaker has produced separating brake action, generally wherein also can separating brake success in T0, substantially there will not be divide-shut brake position judgment be pass and situation that the judgement of pulse output duration is passed under permanent-magnet breaker can't successful divide-shut brake situation.
Embodiments of the present invention are 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. the control method for permanent-magnet breaker, for a permanent-magnet breaker control system, described permanent-magnet breaker control system comprises permanent-magnet breaker (1), measurement and control unit (2), be used for driving the circuit breaker driver element (3) of permanent-magnet breaker (1) divide-shut brake action and being arranged at the position transducer (4) of permanent-magnet breaker (1) one side for detection of 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 to the pulse of circuit breaker driver element (3) output divide-shut brake, it is characterized in that described control method comprises:
The step that signal record gathers: after the pulse of output divide-shut brake, measurement and control unit (2) records the output duration of divide-shut brake pulse and gathers the divide-shut brake positional information of permanent-magnet breaker (1) by position transducer (4);
The step of signal judgement: 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 judge that by divide-shut brake positional information whether permanent-magnet breaker divide-shut brake position is qualified;
The pulse controlled step of divide-shut brake: when output duration is when to be not less than essential operate time of permanent-magnet breaker (1) divide-shut brake and permanent-magnet breaker divide-shut brake position judgment be 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 for permanent-magnet breaker according to claim 1, it is characterized in that described measurement and control unit (2) comprises the first control unit (21) and the second control unit (22), the step of the second control unit (22) settling signal judgement is also exported judged result to the first control unit (21), and the first control unit (21) is controlled the second control unit (22) to the pulse of circuit breaker driver element (3) output divide-shut brake.
3. a kind of control method for permanent-magnet breaker according to claim 2, is characterized in that described the first control unit (21) is for DSP module, and the second control unit (22) is CPLD unit.
4. a kind of control method for permanent-magnet breaker according to claim 1, is characterized in that divide-shut brake positional information process Glitch Filter processing before judgement that position transducer (4) gathers.
5. a kind of control method for permanent-magnet breaker according to claim 1, is characterized in that described position transducer (4) is approach 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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| CN102723244B true CN102723244B (en) | 2014-05-07 |
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| CN106128823B (en) * | 2016-08-11 | 2019-06-11 | 珠海许继电气有限公司 | A kind of permanent magnet circuit breaker control system and method based on double under-voltage information |
| 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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| 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 |
| CN100446141C (en) * | 2006-07-19 | 2008-12-24 | 宁波天安（集团）股份有限公司 | Power supply pulse controller of breaker |
| CN200990332Y (en) * | 2006-10-20 | 2007-12-12 | 郑州中实赛尔科技有限公司 | Multichannel permanent magnetic operating mechanism intelligent synchronous controlling device |
| CN100517542C (en) * | 2007-07-17 | 2009-07-22 | 西安交通大学 | Permanent magnetic machine controller based on pulse modulation technology |
| CN101645376B (en) * | 2009-08-25 | 2012-01-25 | 北京四方华能电气设备有限公司 | Digitized intelligent rapid permanent-magnet breaker |
| CN101867227B (en) * | 2010-07-01 | 2012-01-04 | 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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Owner name: ZHUHAI JINGWEI ELECTRIC CO., LTD. STATE ELECTRIC N Free format text: FORMER OWNER: ZHUHAI JINGWEI ELECTRIC CO., LTD. Effective date: 20121026 |
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Effective date of registration: 20121026 Address after: 519060 Guangdong province Zhuhai city road two No. 12 North Nanping Science and Technology Park Screen Applicant after: ZHUHAI XJ ELECTRIC Co.,Ltd. Applicant after: Zhuhai Jingwei Electric Co.,Ltd. Applicant after: State Grid Corporation of China Address before: 519060 Guangdong province Zhuhai city road two No. 12 North Nanping Science and Technology Park Screen Applicant before: ZHUHAI XJ ELECTRIC Co.,Ltd. Applicant before: Zhuhai Jingwei Electric Co.,Ltd. |
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